[PATCH 3.4 00/65] 3.4.110-rc1 review

[PATCH 3.4 00/65] 3.4.110-rc1 review

[lizf]

From: Zefan Li <lizefan@huawei.com>

This is the start of the stable review cycle for the 3.4.110 release.
There are 65 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 Oct 22 00:45:22 UTC 2015.
Anything received after that time might be too late.

A combined patch relative to 3.4.109 will be posted as an additional
response to this.  A shortlog and diffstat can be found below.

thanks,

Zefan Li

--------------------


Al Viro (1):
  9p: forgetting to cancel request on interrupted zero-copy RPC

Alex Deucher (1):
  drm/radeon: take the mode_config mutex when dealing with hpds (v2)

Alexey Brodkin (1):
  stmmac: troubleshoot unexpected bits in des0 & des1

Arnd Bergmann (1):
  ideapad: fix software rfkill setting

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

Axel Lin (3):
  ASoC: wm8737: Fixup setting VMID Impedance control register
  ASoC: wm8903: Fix define for WM8903_VMID_RES_250K
  ASoC: wm8955: Fix setting wrong register for WM8955_K_8_0_MASK bits

Bjorn Helgaas (1):
  x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A

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):
  mm: kmemleak: allow safe memory scanning during kmemleak disabling

Chris Metcalf (1):
  __bitmap_parselist: fix bug in empty string handling

Chris Wilson (1):
  agp/intel: Fix typo in needs_ilk_vtd_wa()

Christian König (1):
  drm/radeon: partially revert "fix VM_CONTEXT*_PAGE_TABLE_END_ADDR
    handling"

Chuck Lever (1):
  NFS: Fix size of NFSACL SETACL operations

Dan Carpenter (1):
  rndis_wlan: harmless issue calling set_bit()

Darrick J. Wong (1):
  ext4: don't retry file block mapping on bigalloc fs with non-extent
    file

Ding Wang (1):
  mmc: card: Fixup request missing in mmc_blk_issue_rw_rq

Dmitry Monakhov (1):
  jbd2: use GFP_NOFS in jbd2_cleanup_journal_tail()

Dmitry Tunin (1):
  ath3k: add support of 13d3:3474 AR3012 device

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

Eric W. Biederman (2):
  dcache: Handle escaped paths in prepend_path
  vfs: Test for and handle paths that are unreachable from their
    mnt_root

Felix Fietkau (1):
  ath9k: fix DMA stop sequence for AR9003+

Haggai Eran (1):
  staging: rtl8712: prevent buffer overrun in recvbuf2recvframe

Horia Geant? (1):
  crypto: talitos - avoid memleak in talitos_alg_alloc()

Ilya Dryomov (1):
  crush: fix a bug in tree bucket decode

Jan Kara (1):
  jbd2: avoid infinite loop when destroying aborted journal

Jani Nikula (1):
  Revert "drm/i915: Don't skip request retirement if the active list is
    empty"

Jeff Layton (1):
  nfs: increase size of EXCHANGE_ID name string buffer

Jesper Dangaard Brouer (2):
  pktgen: adjust spacing in proc file interface output
  pktgen: document ability to add same device to several threads

John Youn (1):
  usb: dwc3: Reset the transfer resource index on SET_INTERFACE

Joseph Qi (1):
  jbd2: fix ocfs2 corrupt when updating journal superblock fails

Lior Amsalem (1):
  dmaengine: mv_xor: bug fix for racing condition in descriptors cleanup

Lv Zheng (1):
  ACPICA: Tables: Fix an issue that FACS initialization is performed
    twice

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

Mike Marciniszyn (1):
  IB/qib: Change lkey table allocation to support more MRs

Miklos Szeredi (1):
  fuse: initialize fc->release before calling it

Nicolas Ferre (1):
  tty/serial: at91: RS485 mode: 0 is valid for delay_rts_after_send

Nikolay Aleksandrov (1):
  bridge: fix br_stp_set_bridge_priority race conditions

Olga Kornievskaia (1):
  fixing infinite OPEN loop in 4.0 stateid recovery

Pali Rohár (1):
  dell-laptop: Fix allocating & freeing SMI buffer page

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

Peter Zijlstra (1):
  hrtimer: Allow concurrent hrtimer_start() for self restarting timers

Radim Krčmář (2):
  KVM: x86: make vapics_in_nmi_mode atomic
  KVM: x86: properly restore LVT0

Robert Schlabbach (1):
  usb: core: Fix USB 3.0 devices lost in NOTATTACHED state after a hub
    port reset

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

Satish Ashok (1):
  bridge: multicast: restore router configuration on port link down/up

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

Steven Rostedt (Red Hat) (2):
  tracing/filter: Do not WARN on operand count going below zero
  tracing/filter: Do not allow infix to exceed end of string

Subbaraya Sundeep Bhatta (1):
  usb: dwc3: gadget: return error if command sent to DEPCMD register
    fails

Theodore Ts'o (2):
  ext4: fix race between truncate and __ext4_journalled_writepage()
  ext4: call sync_blockdev() before invalidate_bdev() in put_super()

Trond Myklebust (1):
  SUNRPC: Fix a memory leak in the backchannel code

Uwe Kleine-König (2):
  mtd: dc21285: use raw spinlock functions for nw_gpio_lock
  watchdog: omap: assert the counter being stopped before reprogramming

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

Zefan Li (3):
  Revert "drm/radeon: Use drm_calloc_ab for CS relocs"
  crypto: s390/ghash: Fix incorrect backport of a1cae34e23b1
  ARM: Fix incorrect backport of 0b59d8806a31

Zidan Wang (1):
  ASoC: wm8960: the enum of "DAC Polarity" should be wm8960_enum[1]

 Documentation/networking/pktgen.txt               | 77 +++++++++++++--------
 arch/arm/net/bpf_jit_32.c                         |  2 +-
 arch/s390/crypto/ghash_s390.c                     |  2 +-
 arch/x86/include/asm/kvm_host.h                   |  2 +-
 arch/x86/kvm/i8254.c                              |  2 +-
 arch/x86/kvm/lapic.c                              |  5 +-
 arch/x86/pci/acpi.c                               | 11 +++
 drivers/acpi/acpica/utxface.c                     | 10 +--
 drivers/base/regmap/regmap.c                      |  2 +-
 drivers/bluetooth/ath3k.c                         |  2 +
 drivers/bluetooth/btusb.c                         |  1 +
 drivers/char/agp/intel-gtt.c                      |  2 +-
 drivers/crypto/talitos.c                          |  1 +
 drivers/dma/mv_xor.c                              | 72 ++++++++++++--------
 drivers/dma/mv_xor.h                              |  1 +
 drivers/gpu/drm/i915/i915_gem.c                   |  3 +
 drivers/gpu/drm/radeon/evergreen.c                |  2 +-
 drivers/gpu/drm/radeon/ni.c                       |  2 +-
 drivers/gpu/drm/radeon/r600.c                     |  2 +-
 drivers/gpu/drm/radeon/radeon_cs.c                |  4 +-
 drivers/gpu/drm/radeon/radeon_irq_kms.c           |  2 +
 drivers/gpu/drm/radeon/rv770.c                    |  2 +-
 drivers/gpu/drm/radeon/si.c                       |  2 +-
 drivers/infiniband/hw/qib/qib.h                   |  4 ++
 drivers/infiniband/hw/qib/qib_keys.c              |  4 ++
 drivers/infiniband/hw/qib/qib_verbs.c             | 14 ++--
 drivers/infiniband/hw/qib/qib_verbs.h             |  2 +
 drivers/mmc/card/block.c                          |  8 ++-
 drivers/mtd/maps/dc21285.c                        |  4 +-
 drivers/mtd/mtd_blkdevs.c                         |  5 ++
 drivers/net/ethernet/stmicro/stmmac/descs.h       |  2 +
 drivers/net/ethernet/stmicro/stmmac/enh_desc.c    |  4 +-
 drivers/net/ethernet/stmicro/stmmac/norm_desc.c   |  4 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 18 +++--
 drivers/net/wireless/ath/ath9k/main.c             | 13 ++--
 drivers/net/wireless/rndis_wlan.c                 |  6 +-
 drivers/pcmcia/topic.h                            | 16 +++++
 drivers/platform/x86/dell-laptop.c                |  8 +--
 drivers/platform/x86/ideapad-laptop.c             |  3 +-
 drivers/regulator/core.c                          |  2 +-
 drivers/scsi/ipr.h                                |  2 +-
 drivers/staging/rtl8712/rtl8712_recv.c            |  3 +-
 drivers/tty/serial/atmel_serial.c                 | 11 +--
 drivers/usb/core/hub.c                            | 81 +++++++++--------------
 drivers/usb/dwc3/ep0.c                            |  4 ++
 drivers/usb/dwc3/gadget.c                         |  2 +
 drivers/watchdog/omap_wdt.c                       |  7 ++
 fs/dcache.c                                       | 10 +++
 fs/ext4/indirect.c                                |  2 +-
 fs/ext4/inode.c                                   | 22 +++++-
 fs/ext4/super.c                                   |  1 +
 fs/fuse/inode.c                                   |  2 +-
 fs/jbd2/checkpoint.c                              | 46 ++++++++++---
 fs/jbd2/commit.c                                  |  2 +-
 fs/jbd2/journal.c                                 | 49 +++++++++++---
 fs/namei.c                                        | 29 +++++++-
 fs/nfs/nfs3xdr.c                                  |  2 +-
 fs/nfs/nfs4state.c                                |  2 +
 include/acpi/actypes.h                            |  1 +
 include/linux/jbd2.h                              |  7 +-
 include/linux/nfs_xdr.h                           |  2 +-
 include/net/sctp/structs.h                        |  5 ++
 kernel/hrtimer.c                                  | 12 +++-
 kernel/rcutiny.c                                  |  5 ++
 kernel/trace/trace_events_filter.c                | 10 ++-
 lib/bitmap.c                                      | 17 ++---
 mm/kmemleak.c                                     | 19 +++++-
 net/9p/client.c                                   |  3 +-
 net/bridge/br_ioctl.c                             |  2 -
 net/bridge/br_multicast.c                         |  5 ++
 net/bridge/br_stp_if.c                            |  4 +-
 net/ceph/osdmap.c                                 |  2 +-
 net/core/pktgen.c                                 |  2 +-
 net/packet/af_packet.c                            | 20 +-----
 net/sctp/socket.c                                 | 43 +++++++++---
 net/sunrpc/backchannel_rqst.c                     |  2 +-
 sound/soc/codecs/wm8737.c                         |  6 +-
 sound/soc/codecs/wm8903.h                         |  2 +-
 sound/soc/codecs/wm8955.c                         |  2 +-
 sound/soc/codecs/wm8960.c                         |  2 +-
 80 files changed, 524 insertions(+), 254 deletions(-)

-- 
1.9.1

[PATCH 3.4 01/65] hrtimer: Allow concurrent hrtimer_start() for self restarting timers

[lizf]

From: Peter Zijlstra <peterz@infradead.org>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 5de2755c8c8b3a6b8414870e2c284914a2b42e4d upstream.

Because we drop cpu_base->lock around calling hrtimer::function, it is
possible for hrtimer_start() to come in between and enqueue the timer.

If hrtimer::function then returns HRTIMER_RESTART we'll hit the BUG_ON
because HRTIMER_STATE_ENQUEUED will be set.

Since the above is a perfectly valid scenario, remove the BUG_ON and
make the enqueue_hrtimer() call conditional on the timer not being
enqueued already.

NOTE: in that concurrent scenario its entirely common for both sites
to want to modify the hrtimer, since hrtimers don't provide
serialization themselves be sure to provide some such that the
hrtimer::function and the hrtimer_start() caller don't both try and
fudge the expiration state at the same time.

To that effect, add a WARN when someone tries to forward an already
enqueued timer, the most common way to change the expiry of self
restarting timers. Ideally we'd put the WARN in everything modifying
the expiry but most of that is inlines and we don't need the bloat.

Fixes: 2d44ae4d7135 ("hrtimer: clean up cpu->base locking tricks")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Roman Gushchin <klamm@yandex-team.ru>
Cc: Paul Turner <pjt@google.com>
Link: http://lkml.kernel.org/r/20150415113105.GT5029@twins.programming.kicks-ass.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 kernel/hrtimer.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 434f2b6..34031a0 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -853,6 +853,9 @@ u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
 	if (delta.tv64 < 0)
 		return 0;
 
+	if (WARN_ON(timer->state & HRTIMER_STATE_ENQUEUED))
+		return 0;
+
 	if (interval.tv64 < timer->base->resolution.tv64)
 		interval.tv64 = timer->base->resolution.tv64;
 
@@ -1265,11 +1268,14 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now)
 	 * Note: We clear the CALLBACK bit after enqueue_hrtimer and
 	 * we do not reprogramm the event hardware. Happens either in
 	 * hrtimer_start_range_ns() or in hrtimer_interrupt()
+	 *
+	 * Note: Because we dropped the cpu_base->lock above,
+	 * hrtimer_start_range_ns() can have popped in and enqueued the timer
+	 * for us already.
 	 */
-	if (restart != HRTIMER_NORESTART) {
-		BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
+	if (restart != HRTIMER_NORESTART &&
+	    !(timer->state & HRTIMER_STATE_ENQUEUED))
 		enqueue_hrtimer(timer, base);
-	}
 
 	WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK));
 
-- 
1.9.1

[PATCH 3.4 02/65] mtd: fix: avoid race condition when accessing mtd->usecount

[lizf]

From: Brian Norris <computersforpeace@gmail.com>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 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 f1f0671..1917f7d 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -214,6 +214,7 @@ 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;
@@ -237,6 +238,7 @@ 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;
@@ -247,6 +249,7 @@ 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;
@@ -261,6 +264,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
 		return ret;
 
 	mutex_lock(&dev->lock);
+	mutex_lock(&mtd_table_mutex);
 
 	if (--dev->open)
 		goto unlock;
@@ -273,6 +277,7 @@ static int 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);
 	return ret;
-- 
1.9.1

[PATCH 3.4 03/65] crypto: talitos - avoid memleak in talitos_alg_alloc()

[lizf]

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

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 drivers/crypto/talitos.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 921039e..a759fdc 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -2653,6 +2653,7 @@ 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);
 	}
 
-- 
1.9.1

[PATCH 3.4 04/65] ASoC: wm8737: Fixup setting VMID Impedance control register

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 14ba3ec1de043260cecd9e828ea2e3a0ad302893 upstream.

According to the datasheet:
R10 (0Ah) VMID Impedance Control

BIT 3:2 VMIDSEL DEFAULT 00

DESCRIPTION: VMID impedance selection control
00: 75kΩ output
01: 300kΩ output
10: 2.5kΩ output

WM8737_VMIDSEL_MASK is 0xC (VMIDSEL - [3:2]),
so it needs to left shift WM8737_VMIDSEL_SHIFT bits for setting these bits.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 sound/soc/codecs/wm8737.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c
index 4fe9d19..80460d2 100644
--- a/sound/soc/codecs/wm8737.c
+++ b/sound/soc/codecs/wm8737.c
@@ -484,7 +484,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
 
 			/* Fast VMID ramp at 2*2.5k */
 			snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-					    WM8737_VMIDSEL_MASK, 0x4);
+					    WM8737_VMIDSEL_MASK,
+					    2 << WM8737_VMIDSEL_SHIFT);
 
 			/* Bring VMID up */
 			snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
@@ -498,7 +499,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
 
 		/* VMID at 2*300k */
 		snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-				    WM8737_VMIDSEL_MASK, 2);
+				    WM8737_VMIDSEL_MASK,
+				    1 << WM8737_VMIDSEL_SHIFT);
 
 		break;
 
-- 
1.9.1

[PATCH 3.4 05/65] ASoC: wm8903: Fix define for WM8903_VMID_RES_250K

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit ebb6ad73e645b8f2d098dd3c41d2ff0da4146a02 upstream.

VMID Control 0 BIT[2:1] is VMID Divider Enable and Select

00 = VMID disabled (for OFF mode)
01 = 2 x 50kΩ divider (for normal operation)
10 = 2 x 250kΩ divider (for low power standby)
11 = 2 x 5kΩ divider (for fast start-up)

So WM8903_VMID_RES_250K should be 2 << 1, which is 4.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 sound/soc/codecs/wm8903.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8903.h b/sound/soc/codecs/wm8903.h
index db94931..0bb4a64 100644
--- a/sound/soc/codecs/wm8903.h
+++ b/sound/soc/codecs/wm8903.h
@@ -172,7 +172,7 @@ extern int wm8903_mic_detect(struct snd_soc_codec *codec,
 #define WM8903_VMID_BUF_ENA_WIDTH                    1  /* VMID_BUF_ENA */
 
 #define WM8903_VMID_RES_50K                          2
-#define WM8903_VMID_RES_250K                         3
+#define WM8903_VMID_RES_250K                         4
 #define WM8903_VMID_RES_5K                           6
 
 /*
-- 
1.9.1

[PATCH 3.4 06/65] ASoC: wm8955: Fix setting wrong register for WM8955_K_8_0_MASK bits

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 12c350050538c7dc779c083b7342bfd20f74949c upstream.

WM8955_K_8_0_MASK bits is controlled by WM8955_PLL_CONTROL_3 rather than
WM8955_PLL_CONTROL_2.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 sound/soc/codecs/wm8955.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c
index 4696f66..07b78a9 100644
--- a/sound/soc/codecs/wm8955.c
+++ b/sound/soc/codecs/wm8955.c
@@ -298,7 +298,7 @@ static int wm8955_configure_clocking(struct snd_soc_codec *codec)
 		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
 				    WM8955_K_17_9_MASK,
 				    (pll.k >> 9) & WM8955_K_17_9_MASK);
-		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
+		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_3,
 				    WM8955_K_8_0_MASK,
 				    pll.k & WM8955_K_8_0_MASK);
 		if (pll.k)
-- 
1.9.1

[PATCH 3.4 07/65] pktgen: adjust spacing in proc file interface output

[lizf]

From: Jesper Dangaard Brouer <brouer@redhat.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit d079abd181950a44cdf31daafd1662388a6c4d2e upstream.

Too many spaces were introduced in commit 63adc6fb8ac0 ("pktgen: cleanup
checkpatch warnings"), thus misaligning "src_min:" to other columns.

Fixes: 63adc6fb8ac0 ("pktgen: cleanup checkpatch warnings")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 net/core/pktgen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 546b133..ffa5d5d 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -568,7 +568,7 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
 			   "     dst_min: %s  dst_max: %s\n",
 			   pkt_dev->dst_min, pkt_dev->dst_max);
 		seq_printf(seq,
-			   "        src_min: %s  src_max: %s\n",
+			   "     src_min: %s  src_max: %s\n",
 			   pkt_dev->src_min, pkt_dev->src_max);
 	}
 
-- 
1.9.1

[PATCH 3.4 08/65] pktgen: document ability to add same device to several threads

[lizf]

From: Jesper Dangaard Brouer <brouer@redhat.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 2a1ddf27e8189e1d68336c55dd2f305b224ae8f1 upstream.

The pktgen.txt documentation still claimed that adding same device to
multiple threads were not supported, but it have been since 2008 via
commit e6fce5b916cd7 ("pktgen: multiqueue etc.").

Document this and describe the naming scheme dev@X, as the procfile name
still need to be unique.

Fixes: e6fce5b916cd7 ("pktgen: multiqueue etc.")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 Documentation/networking/pktgen.txt | 77 +++++++++++++++++++++++--------------
 1 file changed, 49 insertions(+), 28 deletions(-)

diff --git a/Documentation/networking/pktgen.txt b/Documentation/networking/pktgen.txt
index 75e4fd7..a03239c 100644
--- a/Documentation/networking/pktgen.txt
+++ b/Documentation/networking/pktgen.txt
@@ -24,17 +24,33 @@ For monitoring and control pktgen creates:
         /proc/net/pktgen/ethX
 
 
-Viewing threads
-===============
-/proc/net/pktgen/kpktgend_0 
-Name: kpktgend_0  max_before_softirq: 10000
-Running: 
-Stopped: eth1 
-Result: OK: max_before_softirq=10000
+Kernel threads
+==============
+Pktgen creates a thread for each CPU with affinity to that CPU.
+Which is controlled through procfile /proc/net/pktgen/kpktgend_X.
+
+Example: /proc/net/pktgen/kpktgend_0
+
+ Running:
+ Stopped: eth4@0
+ Result: OK: add_device=eth4@0
+
+Most important are the devices assigned to the thread.
 
-Most important the devices assigned to thread. Note! A device can only belong 
-to one thread.
+The two basic thread commands are:
+ * add_device DEVICE@NAME -- adds a single device
+ * rem_device_all         -- remove all associated devices
 
+When adding a device to a thread, a corrosponding procfile is created
+which is used for configuring this device. Thus, device names need to
+be unique.
+
+To support adding the same device to multiple threads, which is useful
+with multi queue NICs, a the device naming scheme is extended with "@":
+ device@something
+
+The part after "@" can be anything, but it is custom to use the thread
+number.
 
 Viewing devices
 ===============
@@ -42,29 +58,32 @@ Viewing devices
 Parm section holds configured info. Current hold running stats. 
 Result is printed after run or after interruption. Example:
 
-/proc/net/pktgen/eth1       
+/proc/net/pktgen/eth4@0
 
-Params: count 10000000  min_pkt_size: 60  max_pkt_size: 60
-     frags: 0  delay: 0  clone_skb: 1000000  ifname: eth1
+ Params: count 100000  min_pkt_size: 60  max_pkt_size: 60
+     frags: 0  delay: 0  clone_skb: 64  ifname: eth4@0
      flows: 0 flowlen: 0
-     dst_min: 10.10.11.2  dst_max: 
-     src_min:   src_max: 
-     src_mac: 00:00:00:00:00:00  dst_mac: 00:04:23:AC:FD:82
-     udp_src_min: 9  udp_src_max: 9  udp_dst_min: 9  udp_dst_max: 9
-     src_mac_count: 0  dst_mac_count: 0 
-     Flags: 
-Current:
-     pkts-sofar: 10000000  errors: 39664
-     started: 1103053986245187us  stopped: 1103053999346329us idle: 880401us
-     seq_num: 10000011  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
-     cur_saddr: 0x10a0a0a  cur_daddr: 0x20b0a0a
-     cur_udp_dst: 9  cur_udp_src: 9
+     queue_map_min: 0  queue_map_max: 0
+     dst_min: 192.168.81.2  dst_max:
+     src_min:   src_max:
+     src_mac: 90:e2:ba:0a:56:b4 dst_mac: 00:1b:21:3c:9d:f8
+     udp_src_min: 9  udp_src_max: 109  udp_dst_min: 9  udp_dst_max: 9
+     src_mac_count: 0  dst_mac_count: 0
+     Flags: UDPSRC_RND  NO_TIMESTAMP  QUEUE_MAP_CPU
+ Current:
+     pkts-sofar: 100000  errors: 0
+     started: 623913381008us  stopped: 623913396439us idle: 25us
+     seq_num: 100001  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
+     cur_saddr: 192.168.8.3  cur_daddr: 192.168.81.2
+     cur_udp_dst: 9  cur_udp_src: 42
+     cur_queue_map: 
      flows: 0
-Result: OK: 13101142(c12220741+d880401) usec, 10000000 (60byte,0frags)
-  763292pps 390Mb/sec (390805504bps) errors: 39664
+ Result: OK: 15430(c15405d25) usec, 100000 (60byte,0frags)
+  6480562pps 3110Mb/sec (3110669760bps) errors: 0
 
-Configuring threads and devices
-================================
+
+Configuring devices
+===================
 This is done via the /proc interface easiest done via pgset in the scripts
 
 Examples:
@@ -177,6 +196,8 @@ Note when adding devices to a specific CPU there good idea to also assign
 /proc/irq/XX/smp_affinity so the TX-interrupts gets bound to the same CPU.
 as this reduces cache bouncing when freeing skb's.
 
+Plus using the device flag QUEUE_MAP_CPU, which maps the SKBs TX queue
+to the running threads CPU (directly from smp_processor_id()).
 
 Current commands and configuration options
 ==========================================
-- 
1.9.1

[PATCH 3.4 09/65] tty/serial: at91: RS485 mode: 0 is valid for delay_rts_after_send

[lizf]

From: Nicolas Ferre <nicolas.ferre@atmel.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 8687634b7908c42eb700e0469e110e02833611d1 upstream.

In RS485 mode, we may want to set the delay_rts_after_send value to 0.
In the datasheet, the 0 value is said to "disable" the Transmitter Timeguard but
this is exactly the expected behavior if we want no delay...

Moreover, if the value was set to non-zero value by device-tree or earlier
ioctl command, it was impossible to change it back to zero.

Reported-by: Sami Pietikäinen <Sami.Pietikainen@wapice.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/tty/serial/atmel_serial.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index ff58d28..85c28e3 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -229,8 +229,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
 	if (rs485conf->flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
 		atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
-		if ((rs485conf->delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
+		UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -305,9 +304,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
 
 	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
-		if ((atmel_port->rs485.delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port,
-					atmel_port->rs485.delay_rts_after_send);
+		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -1239,9 +1236,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
-		if ((atmel_port->rs485.delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port,
-					atmel_port->rs485.delay_rts_after_send);
+		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
-- 
1.9.1

[PATCH 3.4 10/65] rndis_wlan: harmless issue calling set_bit()

[lizf]

From: Dan Carpenter <dan.carpenter@oracle.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit e3958e9d60b4570fff709f397ef5c6b8483f40f7 upstream.

These are used like:

	set_bit(WORK_LINK_UP, &priv->work_pending);

The problem is that set_bit() takes the actual bit number and not a mask
so static checkers get upset.  It doesn't affect run time because we do
it consistently, but we may as well clean it up.

Fixes: 6010ce07a66c ('rndis_wlan: do link-down state change in worker thread')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/net/wireless/rndis_wlan.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index d66e298..414ac49 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -407,9 +407,9 @@ struct ndis_80211_pmkid {
 #define CAP_MODE_80211G		4
 #define CAP_MODE_MASK		7
 
-#define WORK_LINK_UP		(1<<0)
-#define WORK_LINK_DOWN		(1<<1)
-#define WORK_SET_MULTICAST_LIST	(1<<2)
+#define WORK_LINK_UP		0
+#define WORK_LINK_DOWN		1
+#define WORK_SET_MULTICAST_LIST	2
 
 #define RNDIS_WLAN_ALG_NONE	0
 #define RNDIS_WLAN_ALG_WEP	(1<<0)
-- 
1.9.1

[PATCH 3.4 11/65] drm/radeon: take the mode_config mutex when dealing with hpds (v2)

[lizf]

From: Alex Deucher <alexander.deucher@amd.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 39fa10f7e21574a70cecf1fed0f9b36535aa68a0 upstream.

Since we are messing with state in the worker.

v2: drop the changes in the mst worker

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/gpu/drm/radeon/radeon_irq_kms.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 645dcbf..77c456d 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -51,10 +51,12 @@ static void radeon_hotplug_work_func(struct work_struct *work)
 	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct drm_connector *connector;
 
+	mutex_lock(&mode_config->mutex);
 	if (mode_config->num_connector) {
 		list_for_each_entry(connector, &mode_config->connector_list, head)
 			radeon_connector_hotplug(connector);
 	}
+	mutex_unlock(&mode_config->mutex);
 	/* Just fire off a uevent and let userspace tell us what to do */
 	drm_helper_hpd_irq_event(dev);
 }
-- 
1.9.1

[PATCH 3.4 12/65] usb: dwc3: gadget: return error if command sent to DEPCMD register fails

[lizf]

From: Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 76e838c9f7765f9a6205b4d558d75a66104bc60d upstream.

We need to return error to caller if command is not sent to
controller succesfully.

Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Fixes: 72246da40f37 (usb: Introduce DesignWare USB3 DRD Driver)
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/usb/dwc3/gadget.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b7f8926..b43c6f9 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -301,6 +301,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		if (!(reg & DWC3_DEPCMD_CMDACT)) {
 			dev_vdbg(dwc->dev, "Command Complete --> %d\n",
 					DWC3_DEPCMD_STATUS(reg));
+			if (DWC3_DEPCMD_STATUS(reg))
+				return -EINVAL;
 			return 0;
 		}
 
-- 
1.9.1

[PATCH 3.4 13/65] rcu: Correctly handle non-empty Tiny RCU callback list with none ready

[lizf]

From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>

3.4.110-rc1 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>
[lizf: Backported to 3.4: adjust filename ]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 kernel/rcutiny.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 37a5444..60a56f4 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -279,6 +279,11 @@ 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;
-- 
1.9.1

[PATCH 3.4 14/65] mtd: dc21285: use raw spinlock functions for nw_gpio_lock

[lizf]

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 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 080f060..86598a1 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...
-- 
1.9.1

[PATCH 3.4 15/65] staging: rtl8712: prevent buffer overrun in recvbuf2recvframe

[lizf]

From: Haggai Eran <haggai.eran@gmail.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit cab462140f8a183e3cca0b51c8b59ef715cb6148 upstream.

With an RTL8191SU USB adaptor, sometimes the hints for a fragmented
packet are set, but the packet length is too large. Allocate enough
space to prevent memory corruption and a resulting kernel panic [1].

[1] http://www.spinics.net/lists/linux-wireless/msg136546.html

Signed-off-by: Haggai Eran <haggai.eran@gmail.com>
ACKed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/staging/rtl8712/rtl8712_recv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8712/rtl8712_recv.c b/drivers/staging/rtl8712/rtl8712_recv.c
index 887a807..549b8ab 100644
--- a/drivers/staging/rtl8712/rtl8712_recv.c
+++ b/drivers/staging/rtl8712/rtl8712_recv.c
@@ -1074,7 +1074,8 @@ static int recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
 		/* for first fragment packet, driver need allocate 1536 +
 		 * drvinfo_sz + RXDESC_SIZE to defrag packet. */
 		if ((mf == 1) && (frag == 0))
-			alloc_sz = 1658;/*1658+6=1664, 1664 is 128 alignment.*/
+			/*1658+6=1664, 1664 is 128 alignment.*/
+			alloc_sz = max_t(u16, tmp_len, 1658);
 		else
 			alloc_sz = tmp_len;
 		/* 2 is for IP header 4 bytes alignment in QoS packet case.
-- 
1.9.1

[PATCH 3.4 16/65] usb: core: Fix USB 3.0 devices lost in NOTATTACHED state after a hub port reset

[lizf]

From: Robert Schlabbach <Robert.Schlabbach@gmx.net>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit fb6d1f7df5d25299fd7b3e84b72b8851d3634764 upstream.

Fix USB 3.0 devices lost in NOTATTACHED state after a hub port reset.

Dissolve the function hub_port_finish_reset() completely and divide the
actions to be taken into those which need to be done after each reset
attempt and those which need to be done after the full procedure is
complete, and place them in the appropriate places in hub_port_reset().
Also, remove an unneeded forward declaration of hub_port_reset().

Verbose Problem Description:

USB 3.0 devices may be "lost for good" during a hub port reset.
This makes Linux unable to boot from USB 3.0 devices in certain
constellations of host controllers and devices, because the USB device is
lost during initialization, preventing the rootfs from being mounted.

The underlying problem is that in the affected constellations, during the
processing inside hub_port_reset(), the hub link state goes from 0 to
SS.inactive after the initial reset, and back to 0 again only after the
following "warm" reset.

However, hub_port_finish_reset() is called after each reset attempt and
sets the state the connected USB device based on the "preliminary" status
of the hot reset to USB_STATE_NOTATTACHED due to SS.inactive, yet when
the following warm reset is complete and hub_port_finish_reset() is
called again, its call to set the device to USB_STATE_DEFAULT is blocked
by usb_set_device_state() which does not allow taking USB devices out of
USB_STATE_NOTATTACHED state.

Thanks to Alan Stern for guiding me to the proper solution and how to
submit it.

Link: http://lkml.kernel.org/r/trinity-25981484-72a9-4d46-bf17-9c1cf9301a31-1432073240136%20()%203capp-gmx-bs27
Signed-off-by: Robert Schlabbach <robert_s@gmx.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[lizf: Backported to 3.4:
 - adjust context
 - s/usb_clear_port_feature/clear_port_feature
 - hub_port_warm_reset_required() takes only two arguments]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/usb/core/hub.c | 81 ++++++++++++++++++++------------------------------
 1 file changed, 32 insertions(+), 49 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 93f2538..62ea924 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2176,9 +2176,6 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
 #define HUB_LONG_RESET_TIME	200
 #define HUB_RESET_TIMEOUT	800
 
-static int hub_port_reset(struct usb_hub *hub, int port1,
-			struct usb_device *udev, unsigned int delay, bool warm);
-
 /* Is a USB 3.0 port in the Inactive or Complinance Mode state?
  * Port worm reset is required to recover
  */
@@ -2258,44 +2255,6 @@ delay:
 	return -EBUSY;
 }
 
-static void hub_port_finish_reset(struct usb_hub *hub, int port1,
-			struct usb_device *udev, int *status)
-{
-	switch (*status) {
-	case 0:
-		/* TRSTRCY = 10 ms; plus some extra */
-		msleep(10 + 40);
-		if (udev) {
-			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
-
-			update_devnum(udev, 0);
-			/* The xHC may think the device is already reset,
-			 * so ignore the status.
-			 */
-			if (hcd->driver->reset_device)
-				hcd->driver->reset_device(hcd, udev);
-		}
-		/* FALL THROUGH */
-	case -ENOTCONN:
-	case -ENODEV:
-		clear_port_feature(hub->hdev,
-				port1, USB_PORT_FEAT_C_RESET);
-		if (hub_is_superspeed(hub->hdev)) {
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_BH_PORT_RESET);
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_PORT_LINK_STATE);
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_CONNECTION);
-		}
-		if (udev)
-			usb_set_device_state(udev, *status
-					? USB_STATE_NOTATTACHED
-					: USB_STATE_DEFAULT);
-		break;
-	}
-}
-
 /* Handle port reset and port warm(BH) reset (for USB3 protocol ports) */
 static int hub_port_reset(struct usb_hub *hub, int port1,
 			struct usb_device *udev, unsigned int delay, bool warm)
@@ -2318,13 +2277,9 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 		 * If the caller hasn't explicitly requested a warm reset,
 		 * double check and see if one is needed.
 		 */
-		status = hub_port_status(hub, port1,
-					&portstatus, &portchange);
-		if (status < 0)
-			goto done;
-
-		if (hub_port_warm_reset_required(hub, portstatus))
-			warm = true;
+		if (hub_port_status(hub, port1, &portstatus, &portchange) == 0)
+			if (hub_port_warm_reset_required(hub, portstatus))
+				warm = true;
 	}
 
 	/* Reset the port */
@@ -2347,11 +2302,19 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 
 		/* Check for disconnect or reset */
 		if (status == 0 || status == -ENOTCONN || status == -ENODEV) {
-			hub_port_finish_reset(hub, port1, udev, &status);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_RESET);
 
 			if (!hub_is_superspeed(hub->hdev))
 				goto done;
 
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_BH_PORT_RESET);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_PORT_LINK_STATE);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_CONNECTION);
+
 			/*
 			 * If a USB 3.0 device migrates from reset to an error
 			 * state, re-issue the warm reset.
@@ -2385,6 +2348,26 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 		port1);
 
 done:
+	if (status == 0) {
+		/* TRSTRCY = 10 ms; plus some extra */
+		msleep(10 + 40);
+		if (udev) {
+			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+			update_devnum(udev, 0);
+			/* The xHC may think the device is already reset,
+			 * so ignore the status.
+			 */
+			if (hcd->driver->reset_device)
+				hcd->driver->reset_device(hcd, udev);
+
+			usb_set_device_state(udev, USB_STATE_DEFAULT);
+		}
+	} else {
+		if (udev)
+			usb_set_device_state(udev, USB_STATE_NOTATTACHED);
+	}
+
 	if (!hub_is_superspeed(hub->hdev))
 		up_read(&ehci_cf_port_reset_rwsem);
 
-- 
1.9.1

[PATCH 3.4 17/65] fixing infinite OPEN loop in 4.0 stateid recovery

[lizf]

From: Olga Kornievskaia <kolga@netapp.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit e8d975e73e5fa05f983fbf2723120edcf68e0b38 upstream.

Problem: When an operation like WRITE receives a BAD_STATEID, even though
recovery code clears the RECLAIM_NOGRACE recovery flag before recovering
the open state, because of clearing delegation state for the associated
inode, nfs_inode_find_state_and_recover() gets called and it makes the
same state with RECLAIM_NOGRACE flag again. As a results, when we restart
looking over the open states, we end up in the infinite loop instead of
breaking out in the next test of state flags.

Solution: unset the RECLAIM_NOGRACE set because of
calling of nfs_inode_find_state_and_recover() after returning from calling
recover_open() function.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/nfs/nfs4state.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index c4600b5..1639a4c 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1279,6 +1279,8 @@ restart:
 				}
 				spin_unlock(&state->state_lock);
 				nfs4_put_open_state(state);
+				clear_bit(NFS4CLNT_RECLAIM_NOGRACE,
+					&state->flags);
 				goto restart;
 			}
 		}
-- 
1.9.1

[PATCH 3.4 18/65] NFS: Fix size of NFSACL SETACL operations

[lizf]

From: Chuck Lever <chuck.lever@oracle.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit d683cc49daf7c5afca8cd9654aaa1bf63cdf2ad9 upstream.

When encoding the NFSACL SETACL operation, reserve just the estimated
size of the ACL rather than a fixed maximum. This eliminates needless
zero padding on the wire that the server ignores.

Fixes: ee5dc7732bd5 ('NFS: Fix "kernel BUG at fs/nfs/nfs3xdr.c:1338!"')
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/nfs/nfs3xdr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index a77cc9a..e60bbe2 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -1333,7 +1333,7 @@ static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
 	if (args->npages != 0)
 		xdr_write_pages(xdr, args->pages, 0, args->len);
 	else
-		xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
+		xdr_reserve_space(xdr, args->len);
 
 	error = nfsacl_encode(xdr->buf, base, args->inode,
 			    (args->mask & NFS_ACL) ?
-- 
1.9.1

[PATCH 3.4 19/65] SUNRPC: Fix a memory leak in the backchannel code

[lizf]

From: Trond Myklebust <trond.myklebust@primarydata.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 88de6af24f2b48b06c514d3c3d0a8f22fafe30bd upstream.

req->rq_private_buf isn't initialised when xprt_setup_backchannel calls
xprt_free_allocation.

Fixes: fb7a0b9addbdb ("nfs41: New backchannel helper routines")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 net/sunrpc/backchannel_rqst.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 31def68..617b955 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -60,7 +60,7 @@ static void xprt_free_allocation(struct rpc_rqst *req)
 
 	dprintk("RPC:        free allocations for req= %p\n", req);
 	BUG_ON(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
-	xbufp = &req->rq_private_buf;
+	xbufp = &req->rq_rcv_buf;
 	free_page((unsigned long)xbufp->head[0].iov_base);
 	xbufp = &req->rq_snd_buf;
 	free_page((unsigned long)xbufp->head[0].iov_base);
-- 
1.9.1

[PATCH 3.4 20/65] ipr: Increase default adapter init stage change timeout

[lizf]

From: Brian King <brking@linux.vnet.ibm.com>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 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 153b8bd..19ff8b2 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -251,7 +251,7 @@
 #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
-- 
1.9.1

[PATCH 3.4 21/65] ath3k: add support of 13d3:3474 AR3012 device

[lizf]

From: Dmitry Tunin <hanipouspilot@gmail.com>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.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 52be498..4b8e03f 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -104,6 +104,7 @@ 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) },
@@ -153,6 +154,7 @@ 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, 0xE03C), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f8a58db..bbd1e6c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -182,6 +182,7 @@ 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 },
-- 
1.9.1

[PATCH 3.4 22/65] ath9k: fix DMA stop sequence for AR9003+

[lizf]

From: Felix Fietkau <nbd@openwrt.org>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 300f77c08ded96d33f492aaa02549103852f0c12 upstream.

AR93xx and newer needs to stop rx before tx to avoid getting the DMA
engine or MAC into a stuck state.
This should reduce/fix the occurence of "Failed to stop Tx DMA" logspam.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
[lizf: Backported to 3.4:
 - initialize ret
 - ath_drain_all_txq() takes a second argument]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/net/wireless/ath/ath9k/main.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index ef26056..7e7bd15 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -235,7 +235,7 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
-	bool ret;
+	bool ret = true;
 
 	ieee80211_stop_queues(sc->hw);
 
@@ -245,10 +245,13 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
 	ath9k_debug_samp_bb_mac(sc);
 	ath9k_hw_disable_interrupts(ah);
 
-	ret = ath_drain_all_txq(sc, retry_tx);
-
-	if (!ath_stoprecv(sc))
-		ret = false;
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		ret &= ath_stoprecv(sc);
+		ret &= ath_drain_all_txq(sc, retry_tx);
+	} else {
+		ret &= ath_drain_all_txq(sc, retry_tx);
+		ret &= ath_stoprecv(sc);
+	}
 
 	if (!flush) {
 		if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
-- 
1.9.1

[PATCH 3.4 23/65] regulator: core: fix constraints output buffer

[lizf]

From: Stefan Wahren <stefan.wahren@i2se.com>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 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 0d71557..c8f160d 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -749,7 +749,7 @@ 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;
 
-- 
1.9.1

[PATCH 3.4 24/65] x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A

[lizf]

From: Bjorn Helgaas <bhelgaas@google.com>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 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 ed2835e..65cf4f2 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -70,6 +70,17 @@ static const struct dmi_system_id pci_use_crs_table[] __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.. */
 
-- 
1.9.1

[PATCH 3.4 25/65] dmaengine: mv_xor: bug fix for racing condition in descriptors cleanup

[lizf]

From: Lior Amsalem <alior@marvell.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 9136291f1dbc1d4d1cacd2840fb35f4f3ce16c46 upstream.

This patch fixes a bug in the XOR driver where the cleanup function can be
called and free descriptors that never been processed by the engine (which
result in data errors).

The cleanup function will free descriptors based on the ownership bit in
the descriptors.

Fixes: ff7b04796d98 ("dmaengine: DMA engine driver for Marvell XOR engine")
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/dma/mv_xor.c | 72 +++++++++++++++++++++++++++++++++-------------------
 drivers/dma/mv_xor.h |  1 +
 2 files changed, 47 insertions(+), 26 deletions(-)

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index fa5d55f..c8fecbc 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -390,7 +390,8 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 	dma_cookie_t cookie = 0;
 	int busy = mv_chan_is_busy(mv_chan);
 	u32 current_desc = mv_chan_get_current_desc(mv_chan);
-	int seen_current = 0;
+	int current_cleaned = 0;
+	struct mv_xor_desc *hw_desc;
 
 	dev_dbg(mv_chan->device->common.dev, "%s %d\n", __func__, __LINE__);
 	dev_dbg(mv_chan->device->common.dev, "current_desc %x\n", current_desc);
@@ -402,38 +403,57 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 
 	list_for_each_entry_safe(iter, _iter, &mv_chan->chain,
 					chain_node) {
-		prefetch(_iter);
-		prefetch(&_iter->async_tx);
 
-		/* do not advance past the current descriptor loaded into the
-		 * hardware channel, subsequent descriptors are either in
-		 * process or have not been submitted
-		 */
-		if (seen_current)
-			break;
+		/* clean finished descriptors */
+		hw_desc = iter->hw_desc;
+		if (hw_desc->status & XOR_DESC_SUCCESS) {
+			cookie = mv_xor_run_tx_complete_actions(iter, mv_chan,
+								cookie);
 
-		/* stop the search if we reach the current descriptor and the
-		 * channel is busy
-		 */
-		if (iter->async_tx.phys == current_desc) {
-			seen_current = 1;
-			if (busy)
+			/* done processing desc, clean slot */
+			mv_xor_clean_slot(iter, mv_chan);
+
+			/* break if we did cleaned the current */
+			if (iter->async_tx.phys == current_desc) {
+				current_cleaned = 1;
+				break;
+			}
+		} else {
+			if (iter->async_tx.phys == current_desc) {
+				current_cleaned = 0;
 				break;
+			}
 		}
-
-		cookie = mv_xor_run_tx_complete_actions(iter, mv_chan, cookie);
-
-		if (mv_xor_clean_slot(iter, mv_chan))
-			break;
 	}
 
 	if ((busy == 0) && !list_empty(&mv_chan->chain)) {
-		struct mv_xor_desc_slot *chain_head;
-		chain_head = list_entry(mv_chan->chain.next,
-					struct mv_xor_desc_slot,
-					chain_node);
-
-		mv_xor_start_new_chain(mv_chan, chain_head);
+		if (current_cleaned) {
+			/*
+			 * current descriptor cleaned and removed, run
+			 * from list head
+			 */
+			iter = list_entry(mv_chan->chain.next,
+					  struct mv_xor_desc_slot,
+					  chain_node);
+			mv_xor_start_new_chain(mv_chan, iter);
+		} else {
+			if (!list_is_last(&iter->chain_node, &mv_chan->chain)) {
+				/*
+				 * descriptors are still waiting after
+				 * current, trigger them
+				 */
+				iter = list_entry(iter->chain_node.next,
+						  struct mv_xor_desc_slot,
+						  chain_node);
+				mv_xor_start_new_chain(mv_chan, iter);
+			} else {
+				/*
+				 * some descriptors are still waiting
+				 * to be cleaned
+				 */
+				tasklet_schedule(&mv_chan->irq_tasklet);
+			}
+		}
 	}
 
 	if (cookie > 0)
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index 654876b..0af0377 100644
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -30,6 +30,7 @@
 #define XOR_OPERATION_MODE_XOR		0
 #define XOR_OPERATION_MODE_MEMCPY	2
 #define XOR_OPERATION_MODE_MEMSET	4
+#define XOR_DESC_SUCCESS		0x40000000
 
 #define XOR_CURR_DESC(chan)	(chan->mmr_base + 0x210 + (chan->idx * 4))
 #define XOR_NEXT_DESC(chan)	(chan->mmr_base + 0x200 + (chan->idx * 4))
-- 
1.9.1

[PATCH 3.4 26/65] ASoC: wm8960: the enum of "DAC Polarity" should be wm8960_enum[1]

[lizf]

From: Zidan Wang <zidan.wang@freescale.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit a077e81ec61e07a7f86997d045109f06719fbffe upstream.

the enum of "DAC Polarity" should be wm8960_enum[1].

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 sound/soc/codecs/wm8960.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index ed986e6..bd3c6ef 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -183,7 +183,7 @@ SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 
-SOC_ENUM("DAC Polarity", wm8960_enum[2]),
+SOC_ENUM("DAC Polarity", wm8960_enum[1]),
 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 		    wm8960_get_deemph, wm8960_put_deemph),
 
-- 
1.9.1

[PATCH 3.4 27/65] ext4: fix race between truncate and __ext4_journalled_writepage()

[lizf]

From: Theodore Ts'o <tytso@mit.edu>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit bdf96838aea6a265f2ae6cbcfb12a778c84a0b8e upstream.

The commit cf108bca465d: "ext4: Invert the locking order of page_lock
and transaction start" caused __ext4_journalled_writepage() to drop
the page lock before the page was written back, as part of changing
the locking order to jbd2_journal_start -> page_lock.  However, this
introduced a potential race if there was a truncate racing with the
data=journalled writeback mode.

Fix this by grabbing the page lock after starting the journal handle,
and then checking to see if page had gotten truncated out from under
us.

This fixes a number of different warnings or BUG_ON's when running
xfstests generic/086 in data=journalled mode, including:

jbd2_journal_dirty_metadata: vdc-8: bad jh for block 115643: transaction (ee3fe7
c0, 164), jh->b_transaction (  (null), 0), jh->b_next_transaction (  (null), 0), jlist 0

	      	      	  - and -

kernel BUG at /usr/projects/linux/ext4/fs/jbd2/transaction.c:2200!
    ...
Call Trace:
 [<c02b2ded>] ? __ext4_journalled_invalidatepage+0x117/0x117
 [<c02b2de5>] __ext4_journalled_invalidatepage+0x10f/0x117
 [<c02b2ded>] ? __ext4_journalled_invalidatepage+0x117/0x117
 [<c027d883>] ? lock_buffer+0x36/0x36
 [<c02b2dfa>] ext4_journalled_invalidatepage+0xd/0x22
 [<c0229139>] do_invalidatepage+0x22/0x26
 [<c0229198>] truncate_inode_page+0x5b/0x85
 [<c022934b>] truncate_inode_pages_range+0x156/0x38c
 [<c0229592>] truncate_inode_pages+0x11/0x15
 [<c022962d>] truncate_pagecache+0x55/0x71
 [<c02b913b>] ext4_setattr+0x4a9/0x560
 [<c01ca542>] ? current_kernel_time+0x10/0x44
 [<c026c4d8>] notify_change+0x1c7/0x2be
 [<c0256a00>] do_truncate+0x65/0x85
 [<c0226f31>] ? file_ra_state_init+0x12/0x29

	      	      	  - and -

WARNING: CPU: 1 PID: 1331 at /usr/projects/linux/ext4/fs/jbd2/transaction.c:1396
irty_metadata+0x14a/0x1ae()
    ...
Call Trace:
 [<c01b879f>] ? console_unlock+0x3a1/0x3ce
 [<c082cbb4>] dump_stack+0x48/0x60
 [<c0178b65>] warn_slowpath_common+0x89/0xa0
 [<c02ef2cf>] ? jbd2_journal_dirty_metadata+0x14a/0x1ae
 [<c0178bef>] warn_slowpath_null+0x14/0x18
 [<c02ef2cf>] jbd2_journal_dirty_metadata+0x14a/0x1ae
 [<c02d8615>] __ext4_handle_dirty_metadata+0xd4/0x19d
 [<c02b2f44>] write_end_fn+0x40/0x53
 [<c02b4a16>] ext4_walk_page_buffers+0x4e/0x6a
 [<c02b59e7>] ext4_writepage+0x354/0x3b8
 [<c02b2f04>] ? mpage_release_unused_pages+0xd4/0xd4
 [<c02b1b21>] ? wait_on_buffer+0x2c/0x2c
 [<c02b5a4b>] ? ext4_writepage+0x3b8/0x3b8
 [<c02b5a5b>] __writepage+0x10/0x2e
 [<c0225956>] write_cache_pages+0x22d/0x32c
 [<c02b5a4b>] ? ext4_writepage+0x3b8/0x3b8
 [<c02b6ee8>] ext4_writepages+0x102/0x607
 [<c019adfe>] ? sched_clock_local+0x10/0x10e
 [<c01a8a7c>] ? __lock_is_held+0x2e/0x44
 [<c01a8ad5>] ? lock_is_held+0x43/0x51
 [<c0226dff>] do_writepages+0x1c/0x29
 [<c0276bed>] __writeback_single_inode+0xc3/0x545
 [<c0277c07>] writeback_sb_inodes+0x21f/0x36d
    ...

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/ext4/inode.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9e9db42..facf1cf 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1848,18 +1848,32 @@ static int __ext4_journalled_writepage(struct page *page,
 	page_bufs = page_buffers(page);
 	BUG_ON(!page_bufs);
 	walk_page_buffers(handle, page_bufs, 0, len, NULL, bget_one);
-	/* As soon as we unlock the page, it can go away, but we have
-	 * references to buffers so we are safe */
+	/*
+	 * We need to release the page lock before we start the
+	 * journal, so grab a reference so the page won't disappear
+	 * out from under us.
+	 */
+	get_page(page);
 	unlock_page(page);
 
 	handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
 	if (IS_ERR(handle)) {
 		ret = PTR_ERR(handle);
-		goto out;
+		put_page(page);
+		goto out_no_pagelock;
 	}
 
 	BUG_ON(!ext4_handle_valid(handle));
 
+	lock_page(page);
+	put_page(page);
+	if (page->mapping != mapping) {
+		/* The page got truncated from under us */
+		ext4_journal_stop(handle);
+		ret = 0;
+		goto out;
+	}
+
 	ret = walk_page_buffers(handle, page_bufs, 0, len, NULL,
 				do_journal_get_write_access);
 
@@ -1875,6 +1889,8 @@ static int __ext4_journalled_writepage(struct page *page,
 	walk_page_buffers(handle, page_bufs, 0, len, NULL, bput_one);
 	ext4_set_inode_state(inode, EXT4_STATE_JDATA);
 out:
+	unlock_page(page);
+out_no_pagelock:
 	return ret;
 }
 
-- 
1.9.1

[PATCH 3.4 28/65] Disable write buffering on Toshiba ToPIC95

[lizf]

From: Ryan Underwood <nemesis@icequake.net>

3.4.110-rc1 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: Zefan Li <lizefan@huawei.com>
---
 drivers/pcmcia/topic.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
index 615a45a..582688fe 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;
 }
 
-- 
1.9.1

[PATCH 3.4 29/65] sctp: fix ASCONF list handling

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 2d45a02d0166caf2627fe91897c6ffc3b19514c4 upstream.

->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>
[lizf: Backported to 3.4:
 - use global spinlock instead of per-namespace lock]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 include/net/sctp/structs.h |  5 +++++
 net/sctp/socket.c          | 43 ++++++++++++++++++++++++++++++++-----------
 2 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 88949a9..4ea0ec6 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -209,6 +209,7 @@ extern struct sctp_globals {
 	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 */
@@ -355,6 +356,10 @@ 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 0c0bd2f..bc7b5de 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1539,8 +1539,10 @@ SCTP_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(&sctp_globals.addr_wq_lock);
 	sctp_bh_lock_sock(sk);
 
 	/* Hold the sock, since sk_common_release() will put sock_put()
@@ -1550,7 +1552,7 @@ SCTP_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(&sctp_globals.addr_wq_lock);
 
 	sock_put(sk);
 
@@ -3492,6 +3494,7 @@ 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(&sctp_globals.addr_wq_lock);
 	if (val == 0 && sp->do_auto_asconf) {
 		list_del(&sp->auto_asconf_list);
 		sp->do_auto_asconf = 0;
@@ -3500,6 +3503,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
 		    &sctp_auto_asconf_splist);
 		sp->do_auto_asconf = 1;
 	}
+	spin_unlock_bh(&sctp_globals.addr_wq_lock);
 	return 0;
 }
 
@@ -3935,18 +3939,28 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 	local_bh_disable();
 	percpu_counter_inc(&sctp_sockets_allocated);
 	sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+
+	/* Nothing can fail after this block, otherwise
+	 * sctp_destroy_sock() will be called without addr_wq_lock held
+	 */
 	if (sctp_default_auto_asconf) {
+		spin_lock(&sctp_globals.addr_wq_lock);
 		list_add_tail(&sp->auto_asconf_list,
 		    &sctp_auto_asconf_splist);
 		sp->do_auto_asconf = 1;
-	} else
+		spin_unlock(&sctp_globals.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
+ * sctp_globals.addr_wq_lock held if sp->do_auto_asconf is true
+ */
 SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
 {
 	struct sctp_sock *sp;
@@ -6746,6 +6760,19 @@ 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.
  */
@@ -6760,7 +6787,6 @@ 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.
@@ -6768,12 +6794,7 @@ 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.
-- 
1.9.1

[PATCH 3.4 30/65] jbd2: use GFP_NOFS in jbd2_cleanup_journal_tail()

[lizf]

From: Dmitry Monakhov <dmonakhov@openvz.org>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit b4f1afcd068f6e533230dfed00782cd8a907f96b upstream.

jbd2_cleanup_journal_tail() can be invoked by jbd2__journal_start()
So allocations should be done with GFP_NOFS

[Full stack trace snipped from 3.10-rh7]
[<ffffffff815c4bd4>] dump_stack+0x19/0x1b
[<ffffffff8105dba1>] warn_slowpath_common+0x61/0x80
[<ffffffff8105dcca>] warn_slowpath_null+0x1a/0x20
[<ffffffff815c2142>] slab_pre_alloc_hook.isra.31.part.32+0x15/0x17
[<ffffffff8119c045>] kmem_cache_alloc+0x55/0x210
[<ffffffff811477f5>] ? mempool_alloc_slab+0x15/0x20
[<ffffffff811477f5>] mempool_alloc_slab+0x15/0x20
[<ffffffff81147939>] mempool_alloc+0x69/0x170
[<ffffffff815cb69e>] ? _raw_spin_unlock_irq+0xe/0x20
[<ffffffff8109160d>] ? finish_task_switch+0x5d/0x150
[<ffffffff811f1a8e>] bio_alloc_bioset+0x1be/0x2e0
[<ffffffff8127ee49>] blkdev_issue_flush+0x99/0x120
[<ffffffffa019a733>] jbd2_cleanup_journal_tail+0x93/0xa0 [jbd2] -->GFP_KERNEL
[<ffffffffa019aca1>] jbd2_log_do_checkpoint+0x221/0x4a0 [jbd2]
[<ffffffffa019afc7>] __jbd2_log_wait_for_space+0xa7/0x1e0 [jbd2]
[<ffffffffa01952d8>] start_this_handle+0x2d8/0x550 [jbd2]
[<ffffffff811b02a9>] ? __memcg_kmem_put_cache+0x29/0x30
[<ffffffff8119c120>] ? kmem_cache_alloc+0x130/0x210
[<ffffffffa019573a>] jbd2__journal_start+0xba/0x190 [jbd2]
[<ffffffff811532ce>] ? lru_cache_add+0xe/0x10
[<ffffffffa01c9549>] ? ext4_da_write_begin+0xf9/0x330 [ext4]
[<ffffffffa01f2c77>] __ext4_journal_start_sb+0x77/0x160 [ext4]
[<ffffffffa01c9549>] ext4_da_write_begin+0xf9/0x330 [ext4]
[<ffffffff811446ec>] generic_file_buffered_write_iter+0x10c/0x270
[<ffffffff81146918>] __generic_file_write_iter+0x178/0x390
[<ffffffff81146c6b>] __generic_file_aio_write+0x8b/0xb0
[<ffffffff81146ced>] generic_file_aio_write+0x5d/0xc0
[<ffffffffa01bf289>] ext4_file_write+0xa9/0x450 [ext4]
[<ffffffff811c31d9>] ? pipe_read+0x379/0x4f0
[<ffffffff811b93f0>] do_sync_write+0x90/0xe0
[<ffffffff811b9b6d>] vfs_write+0xbd/0x1e0
[<ffffffff811ba5b8>] SyS_write+0x58/0xb0
[<ffffffff815d4799>] system_call_fastpath+0x16/0x1b

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/jbd2/checkpoint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index c78841e..dadfedb 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -455,7 +455,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
 	 * jbd2_cleanup_journal_tail() doesn't get called all that often.
 	 */
 	if (journal->j_flags & JBD2_BARRIER)
-		blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+		blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
 
 	__jbd2_update_log_tail(journal, first_tid, blocknr);
 	return 0;
-- 
1.9.1

[PATCH 3.4 31/65] regmap: Fix regmap_bulk_read in BE mode

[lizf]

From: Arun Chandran <achandran@mvista.com>

3.4.110-rc1 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>
[lizf: Backported to 3.4: format_val() takes only two arguments]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 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 8e81f85..0ac67ac 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -784,7 +784,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 			ret = regmap_read(map, reg + i, &ival);
 			if (ret != 0)
 				return ret;
-			memcpy(val + (i * val_bytes), &ival, val_bytes);
+			map->format.format_val(val + (i * val_bytes), ival);
 		}
 	}
 
-- 
1.9.1

[PATCH 3.4 32/65] jbd2: fix ocfs2 corrupt when updating journal superblock fails

[lizf]

From: Joseph Qi <joseph.qi@huawei.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 6f6a6fda294506dfe0e3e0a253bb2d2923f28f0a upstream.

If updating journal superblock fails after journal data has been
flushed, the error is omitted and this will mislead the caller as a
normal case.  In ocfs2, the checkpoint will be treated successfully
and the other node can get the lock to update. Since the sb_start is
still pointing to the old log block, it will rewrite the journal data
during journal recovery by the other node. Thus the new updates will
be overwritten and ocfs2 corrupts.  So in above case we have to return
the error, and ocfs2_commit_cache will take care of the error and
prevent the other node to do update first.  And only after recovering
journal it can do the new updates.

The issue discussion mail can be found at:
https://oss.oracle.com/pipermail/ocfs2-devel/2015-June/010856.html
http://comments.gmane.org/gmane.comp.file-systems.ext4/48841

[ Fixed bug in patch which allowed a non-negative error return from
  jbd2_cleanup_journal_tail() to leak out of jbd2_fjournal_flush(); this
  was causing xfstests ext4/306 to fail. -- Ted ]

Reported-by: Yiwen Jiang <jiangyiwen@huawei.com>
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Tested-by: Yiwen Jiang <jiangyiwen@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/jbd2/checkpoint.c |  5 ++---
 fs/jbd2/journal.c    | 38 +++++++++++++++++++++++++++++++-------
 include/linux/jbd2.h |  4 ++--
 3 files changed, 35 insertions(+), 12 deletions(-)

diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index dadfedb..6bb5285 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -440,7 +440,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
 	unsigned long	blocknr;
 
 	if (is_journal_aborted(journal))
-		return 1;
+		return -EIO;
 
 	if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr))
 		return 1;
@@ -457,8 +457,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
 	if (journal->j_flags & JBD2_BARRIER)
 		blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
 
-	__jbd2_update_log_tail(journal, first_tid, blocknr);
-	return 0;
+	return __jbd2_update_log_tail(journal, first_tid, blocknr);
 }
 
 
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f697468..ad64b94 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -823,9 +823,10 @@ int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
  *
  * Requires j_checkpoint_mutex
  */
-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
 {
 	unsigned long freed;
+	int ret;
 
 	BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
 
@@ -835,7 +836,10 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
 	 * space and if we lose sb update during power failure we'd replay
 	 * old transaction with possibly newly overwritten data.
 	 */
-	jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+	ret = jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+	if (ret)
+		goto out;
+
 	write_lock(&journal->j_state_lock);
 	freed = block - journal->j_tail;
 	if (block < journal->j_tail)
@@ -851,6 +855,9 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
 	journal->j_tail_sequence = tid;
 	journal->j_tail = block;
 	write_unlock(&journal->j_state_lock);
+
+out:
+	return ret;
 }
 
 /*
@@ -1264,7 +1271,7 @@ static int journal_reset(journal_t *journal)
 	return jbd2_journal_start_thread(journal);
 }
 
-static void jbd2_write_superblock(journal_t *journal, int write_op)
+static int jbd2_write_superblock(journal_t *journal, int write_op)
 {
 	struct buffer_head *bh = journal->j_sb_buffer;
 	int ret;
@@ -1301,7 +1308,10 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
 		printk(KERN_ERR "JBD2: Error %d detected when updating "
 		       "journal superblock for %s.\n", ret,
 		       journal->j_devname);
+		jbd2_journal_abort(journal, ret);
 	}
+
+	return ret;
 }
 
 /**
@@ -1314,10 +1324,11 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
  * Update a journal's superblock information about log tail and write it to
  * disk, waiting for the IO to complete.
  */
-void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
 				     unsigned long tail_block, int write_op)
 {
 	journal_superblock_t *sb = journal->j_superblock;
+	int ret;
 
 	BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
 	jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
@@ -1326,13 +1337,18 @@ void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
 	sb->s_sequence = cpu_to_be32(tail_tid);
 	sb->s_start    = cpu_to_be32(tail_block);
 
-	jbd2_write_superblock(journal, write_op);
+	ret = jbd2_write_superblock(journal, write_op);
+	if (ret)
+		goto out;
 
 	/* Log is no longer empty */
 	write_lock(&journal->j_state_lock);
 	WARN_ON(!sb->s_sequence);
 	journal->j_flags &= ~JBD2_FLUSHED;
 	write_unlock(&journal->j_state_lock);
+
+out:
+	return ret;
 }
 
 /**
@@ -1785,7 +1801,14 @@ int jbd2_journal_flush(journal_t *journal)
 		return -EIO;
 
 	mutex_lock(&journal->j_checkpoint_mutex);
-	jbd2_cleanup_journal_tail(journal);
+	if (!err) {
+		err = jbd2_cleanup_journal_tail(journal);
+		if (err < 0) {
+			mutex_unlock(&journal->j_checkpoint_mutex);
+			goto out;
+		}
+		err = 0;
+	}
 
 	/* Finally, mark the journal as really needing no recovery.
 	 * This sets s_start==0 in the underlying superblock, which is
@@ -1801,7 +1824,8 @@ int jbd2_journal_flush(journal_t *journal)
 	J_ASSERT(journal->j_head == journal->j_tail);
 	J_ASSERT(journal->j_tail_sequence == journal->j_transaction_sequence);
 	write_unlock(&journal->j_state_lock);
-	return 0;
+out:
+	return err;
 }
 
 /**
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 2ffbf99..129bca4 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -974,7 +974,7 @@ extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
 int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
 int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
 			      unsigned long *block);
-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
 void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
 
 /* Commit management */
@@ -1093,7 +1093,7 @@ extern int	   jbd2_journal_recover    (journal_t *journal);
 extern int	   jbd2_journal_wipe       (journal_t *, int);
 extern int	   jbd2_journal_skip_recovery	(journal_t *);
 extern void	   jbd2_journal_update_sb_errno(journal_t *);
-extern void	   jbd2_journal_update_sb_log_tail	(journal_t *, tid_t,
+extern int	   jbd2_journal_update_sb_log_tail	(journal_t *, tid_t,
 				unsigned long, int);
 extern void	   __jbd2_journal_abort_hard	(journal_t *);
 extern void	   jbd2_journal_abort      (journal_t *, int);
-- 
1.9.1

[PATCH 3.4 33/65] ideapad: fix software rfkill setting

[lizf]

From: Arnd Bergmann <arnd@arndb.de>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 4b200b4604bec3388426159f1656109d19fadf6e upstream.

This fixes a several year old regression that I found while trying
to get the Yoga 3 11 to work. The ideapad_rfk_set function is meant
to send a command to the embedded controller through ACPI, but
as of c1f73658ed, it sends the index of the rfkill device instead
of the command, and ignores the opcode field.

This changes it back to the original behavior, which indeed
flips the rfkill state as seen in the debugfs interface.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: c1f73658ed ("ideapad: pass ideapad_priv as argument (part 2)")
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
[lizf: Backported to 3.4: @data is not a pointer but the device idx]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/platform/x86/ideapad-laptop.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index ac902f7..34e9fcf 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -407,7 +407,8 @@ const struct ideapad_rfk_data ideapad_rfk_data[] = {
 
 static int ideapad_rfk_set(void *data, bool blocked)
 {
-	unsigned long opcode = (unsigned long)data;
+	unsigned long dev = (unsigned long)data;
+	int opcode = ideapad_rfk_data[dev].opcode;
 
 	return write_ec_cmd(ideapad_handle, opcode, !blocked);
 }
-- 
1.9.1

[PATCH 3.4 34/65] mmc: card: Fixup request missing in mmc_blk_issue_rw_rq

[lizf]

From: Ding Wang <justin.wang@spreadtrum.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 29535f7b797df35cc9b6b3bca635591cdd3dd2a8 upstream.

The current handler of MMC_BLK_CMD_ERR in mmc_blk_issue_rw_rq function
may cause new coming request permanent missing when the ongoing
request (previoulsy started) complete end.

The problem scenario is as follows:
(1) Request A is ongoing;
(2) Request B arrived, and finally mmc_blk_issue_rw_rq() is called;
(3) Request A encounters the MMC_BLK_CMD_ERR error;
(4) In the error handling of MMC_BLK_CMD_ERR, suppose mmc_blk_cmd_err()
    end request A completed and return zero. Continue the error handling,
    suppose mmc_blk_reset() reset device success;
(5) Continue the execution, while loop completed because variable ret
    is zero now;
(6) Finally, mmc_blk_issue_rw_rq() return without processing request B.

The process related to the missing request may wait that IO request
complete forever, possibly crashing the application or hanging the system.

Fix this issue by starting new request when reset success.

Signed-off-by: Ding Wang <justin.wang@spreadtrum.com>
Fixes: 67716327eec7 ("mmc: block: add eMMC hardware reset support")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/mmc/card/block.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c32a909..47a789e 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1372,9 +1372,11 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 			break;
 		case MMC_BLK_CMD_ERR:
 			ret = mmc_blk_cmd_err(md, card, brq, req, ret);
-			if (!mmc_blk_reset(md, card->host, type))
-				break;
-			goto cmd_abort;
+			if (mmc_blk_reset(md, card->host, type))
+				goto cmd_abort;
+			if (!ret)
+				goto start_new_req;
+			break;
 		case MMC_BLK_RETRY:
 			if (retry++ < 5)
 				break;
-- 
1.9.1

[PATCH 3.4 35/65] nfs: increase size of EXCHANGE_ID name string buffer

[lizf]

From: Jeff Layton <jlayton@poochiereds.net>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 764ad8ba8cd4c6f836fca9378f8c5121aece0842 upstream.

The current buffer is much too small if you have a relatively long
hostname. Bring it up to the size of the one that SETCLIENTID has.

Reported-by: Michael Skralivetsky <michael.skralivetsky@primarydata.com>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 include/linux/nfs_xdr.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 7ba3551..845b402 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1061,7 +1061,7 @@ struct nfstime4 {
 };
 
 #ifdef CONFIG_NFS_V4_1
-#define NFS4_EXCHANGE_ID_LEN	(48)
+#define NFS4_EXCHANGE_ID_LEN	(127)
 struct nfs41_exchange_id_args {
 	struct nfs_client		*client;
 	nfs4_verifier			*verifier;
-- 
1.9.1

[PATCH 3.4 36/65] bridge: fix br_stp_set_bridge_priority race conditions

[lizf]

From: Nikolay Aleksandrov <razor@blackwall.org>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 2dab80a8b486f02222a69daca6859519e05781d9 upstream.

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: Zefan Li <lizefan@huawei.com>
---
 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 7222fe1..ea0e15c 100644
--- a/net/bridge/br_ioctl.c
+++ b/net/bridge/br_ioctl.c
@@ -246,9 +246,7 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		if (!capable(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 2f100cc..23ea159 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -242,12 +242,13 @@ 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) {
@@ -265,6 +266,7 @@ 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 */
-- 
1.9.1

[PATCH 3.4 37/65] ext4: call sync_blockdev() before invalidate_bdev() in put_super()

[lizf]

From: Theodore Ts'o <tytso@mit.edu>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 89d96a6f8e6491f24fc8f99fd6ae66820e85c6c1 upstream.

Normally all of the buffers will have been forced out to disk before
we call invalidate_bdev(), but there will be some cases, where a file
system operation was aborted due to an ext4_error(), where there may
still be some dirty buffers in the buffer cache for the device.  So
try to force them out to memory before calling invalidate_bdev().

This fixes a warning triggered by generic/081:

WARNING: CPU: 1 PID: 3473 at /usr/projects/linux/ext4/fs/block_dev.c:56 __blkdev_put+0xb5/0x16f()

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/ext4/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 92ea560..2e26a54 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -888,6 +888,7 @@ static void ext4_put_super(struct super_block *sb)
 		dump_orphan_list(sb, sbi);
 	J_ASSERT(list_empty(&sbi->s_orphan));
 
+	sync_blockdev(sb->s_bdev);
 	invalidate_bdev(sb->s_bdev);
 	if (sbi->journal_bdev && sbi->journal_bdev != sb->s_bdev) {
 		/*
-- 
1.9.1

[PATCH 3.4 38/65] packet: read num_members once in packet_rcv_fanout()

[lizf]

From: Eric Dumazet <edumazet@google.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit f98f4514d07871da7a113dd9e3e330743fd70ae4 upstream.

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>
[lizf: Backported to 3.4: use ACCESS_ONCE() instead of READ_ONCE()]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 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 dbe1715..af067d7 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1210,7 +1210,7 @@ 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;
 	struct sock *sk;
 
-- 
1.9.1

[PATCH 3.4 39/65] packet: avoid out of bounds read in round robin fanout

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 468479e6043c84f5a65299cc07cb08a22a28c2b1 upstream.

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>
[lizf: Backported to 3.4:
 - adjust context
 - fanout_demux_lb() returns a pointer]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 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 af067d7..79c75e1 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1169,16 +1169,6 @@ 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 struct sock *fanout_demux_hash(struct packet_fanout *f, struct sk_buff *skb, unsigned int num)
 {
 	u32 idx, hash = skb->rxhash;
@@ -1190,13 +1180,9 @@ static struct sock *fanout_demux_hash(struct packet_fanout *f, struct sk_buff *s
 
 static struct sock *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 f->arr[cur];
+	return f->arr[val % num];
 }
 
 static struct sock *fanout_demux_cpu(struct packet_fanout *f, struct sk_buff *skb, unsigned int num)
-- 
1.9.1

[PATCH 3.4 40/65] ext4: don't retry file block mapping on bigalloc fs with non-extent file

[lizf]

From: "Darrick J. Wong" <darrick.wong@oracle.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 292db1bc6c105d86111e858859456bcb11f90f91 upstream.

ext4 isn't willing to map clusters to a non-extent file.  Don't signal
this with an out of space error, since the FS will retry the
allocation (which didn't fail) forever.  Instead, return EUCLEAN so
that the operation will fail immediately all the way back to userspace.

(The fix is either to run e2fsck -E bmap2extent, or to chattr +e the file.)

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/ext4/indirect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 6dc6153..f819837 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -705,7 +705,7 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
 				       EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
 		EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
 				 "non-extent mapped inodes with bigalloc");
-		return -ENOSPC;
+		return -EUCLEAN;
 	}
 
 	goal = ext4_find_goal(inode, map->m_lblk, partial);
-- 
1.9.1

[PATCH 3.4 41/65] watchdog: omap: assert the counter being stopped before reprogramming

[lizf]

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 530c11d432727c697629ad5f9d00ee8e2864d453 upstream.

The omap watchdog has the annoying behaviour that writes to most
registers don't have any effect when the watchdog is already running.
Quoting the AM335x reference manual:

	To modify the timer counter value (the WDT_WCRR register),
	prescaler ratio (the WDT_WCLR[4:2] PTV bit field), delay
	configuration value (the WDT_WDLY[31:0] DLY_VALUE bit field), or
	the load value (the WDT_WLDR[31:0] TIMER_LOAD bit field), the
	watchdog timer must be disabled by using the start/stop sequence
	(the WDT_WSPR register).

Currently the timer is stopped in the .probe callback but still there
are possibilities that yield to a situation where omap_wdt_start is
entered with the timer running (e.g. when /dev/watchdog is closed
without stopping and then reopened). In such a case programming the
timeout silently fails!

To circumvent this stop the timer before reprogramming.

Assuming one of the first things the watchdog user does is setting the
timeout explicitly nothing too bad should happen because this explicit
setting works fine.

Fixes: 7768a13c252a ("[PATCH] OMAP: Add Watchdog driver support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/watchdog/omap_wdt.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index 8285d65..c080be5 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -152,6 +152,13 @@ static int omap_wdt_open(struct inode *inode, struct file *file)
 
 	pm_runtime_get_sync(wdev->dev);
 
+	/*
+	 * Make sure the watchdog is disabled. This is unfortunately required
+	 * because writing to various registers with the watchdog running has no
+	 * effect.
+	 */
+	omap_wdt_disable(wdev);
+
 	/* initialize prescaler */
 	while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01)
 		cpu_relax();
-- 
1.9.1

[PATCH 3.4 42/65] bridge: multicast: restore router configuration on port link down/up

[lizf]

From: Satish Ashok <sashok@cumulusnetworks.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 754bc547f0a79f7568b5b81c7fc0a8d044a6571a upstream.

When a port goes through a link down/up the multicast router configuration
is not restored.

Signed-off-by: Satish Ashok <sashok@cumulusnetworks.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
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>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 net/bridge/br_multicast.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index a41051a..87ae8c3 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -36,6 +36,9 @@
 #define mlock_dereference(X, br) \
 	rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
 
+static void br_multicast_add_router(struct net_bridge *br,
+				    struct net_bridge_port *port);
+
 #if IS_ENABLED(CONFIG_IPV6)
 static inline int ipv6_is_transient_multicast(const struct in6_addr *addr)
 {
@@ -842,6 +845,8 @@ void br_multicast_enable_port(struct net_bridge_port *port)
 		goto out;
 
 	__br_multicast_enable_port(port);
+	if (port->multicast_router == 2 && hlist_unhashed(&port->rlist))
+		br_multicast_add_router(br, port);
 
 out:
 	spin_unlock(&br->multicast_lock);
-- 
1.9.1

[PATCH 3.4 43/65] stmmac: troubleshoot unexpected bits in des0 & des1

[lizf]

From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit f1590670ce069eefeb93916391a67643e6ad1630 upstream.

Current implementation of descriptor init procedure only takes
care about setting/clearing ownership flag in "des0"/"des1"
fields while it is perfectly possible to get unexpected bits
set because of the following factors:

 [1] On driver probe underlying memory allocated with
     dma_alloc_coherent() might not be zeroed and so
     it will be filled with garbage.

 [2] During driver operation some bits could be set by SD/MMC
     controller (for example error flags etc).

And unexpected and/or randomly set flags in "des0"/"des1"
fields may lead to unpredictable behavior of GMAC DMA block.

This change addresses both items above with:

 [1] Use of dma_zalloc_coherent() instead of simple
     dma_alloc_coherent() to make sure allocated memory is
     zeroed. That shouldn't affect performance because
     this allocation only happens once on driver probe.

 [2] Do explicit zeroing of both "des0" and "des1" fields
     of all buffer descriptors during initialization of
     DMA transfer.

And while at it fixed identation of dma_free_coherent()
counterpart as well.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: arc-linux-dev@synopsys.com
Cc: linux-kernel@vger.kernel.org
Cc: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
[lizf: Backported to 3.4:
 - adjust contest
 - adjust allocations in init_dma_desc_rings()]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/net/ethernet/stmicro/stmmac/descs.h       |  2 ++
 drivers/net/ethernet/stmicro/stmmac/enh_desc.c    |  4 +++-
 drivers/net/ethernet/stmicro/stmmac/norm_desc.c   |  4 +++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 18 ++++++++----------
 4 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/descs.h b/drivers/net/ethernet/stmicro/stmmac/descs.h
index 9820ec8..e93a0bf 100644
--- a/drivers/net/ethernet/stmicro/stmmac/descs.h
+++ b/drivers/net/ethernet/stmicro/stmmac/descs.h
@@ -153,6 +153,8 @@ struct dma_desc {
 			u32 buffer2_size:13;
 			u32 reserved4:3;
 		} etx;		/* -- enhanced -- */
+
+		u64 all_flags;
 	} des01;
 	unsigned int des2;
 	unsigned int des3;
diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
index ad1b627..e0db6f6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
@@ -232,6 +232,7 @@ static void enh_desc_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
 {
 	int i;
 	for (i = 0; i < ring_size; i++) {
+		p->des01.all_flags = 0;
 		p->des01.erx.own = 1;
 		p->des01.erx.buffer1_size = BUF_SIZE_8KiB - 1;
 
@@ -248,7 +249,7 @@ static void enh_desc_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
 	int i;
 
 	for (i = 0; i < ring_size; i++) {
-		p->des01.etx.own = 0;
+		p->des01.all_flags = 0;
 		ehn_desc_tx_set_on_ring_chain(p, (i == ring_size - 1));
 		p++;
 	}
@@ -271,6 +272,7 @@ static void enh_desc_set_tx_owner(struct dma_desc *p)
 
 static void enh_desc_set_rx_owner(struct dma_desc *p)
 {
+	p->des01.all_flags = 0;
 	p->des01.erx.own = 1;
 }
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
index 25953bb..9703340 100644
--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
@@ -126,6 +126,7 @@ static void ndesc_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
 {
 	int i;
 	for (i = 0; i < ring_size; i++) {
+		p->des01.all_flags = 0;
 		p->des01.rx.own = 1;
 		p->des01.rx.buffer1_size = BUF_SIZE_2KiB - 1;
 
@@ -141,7 +142,7 @@ static void ndesc_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
 {
 	int i;
 	for (i = 0; i < ring_size; i++) {
-		p->des01.tx.own = 0;
+		p->des01.all_flags = 0;
 		ndesc_tx_set_on_ring_chain(p, (i == (ring_size - 1)));
 		p++;
 	}
@@ -164,6 +165,7 @@ static void ndesc_set_tx_owner(struct dma_desc *p)
 
 static void ndesc_set_rx_owner(struct dma_desc *p)
 {
+	p->des01.all_flags = 0;
 	p->des01.rx.own = 1;
 }
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 9bdfaba..88c8645 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -424,19 +424,17 @@ static void init_dma_desc_rings(struct net_device *dev)
 	priv->rx_skbuff =
 	    kmalloc(sizeof(struct sk_buff *) * rxsize, GFP_KERNEL);
 	priv->dma_rx =
-	    (struct dma_desc *)dma_alloc_coherent(priv->device,
-						  rxsize *
-						  sizeof(struct dma_desc),
-						  &priv->dma_rx_phy,
-						  GFP_KERNEL);
+	    (struct dma_desc *)dma_zalloc_coherent(priv->device, rxsize *
+						   sizeof(struct dma_desc),
+						   &priv->dma_rx_phy,
+						   GFP_KERNEL);
 	priv->tx_skbuff = kmalloc(sizeof(struct sk_buff *) * txsize,
 				       GFP_KERNEL);
 	priv->dma_tx =
-	    (struct dma_desc *)dma_alloc_coherent(priv->device,
-						  txsize *
-						  sizeof(struct dma_desc),
-						  &priv->dma_tx_phy,
-						  GFP_KERNEL);
+	    (struct dma_desc *)dma_zalloc_coherent(priv->device, txsize *
+						   sizeof(struct dma_desc),
+						   &priv->dma_tx_phy,
+						   GFP_KERNEL);
 
 	if ((priv->dma_rx == NULL) || (priv->dma_tx == NULL)) {
 		pr_err("%s:ERROR allocating the DMA Tx/Rx desc\n", __func__);
-- 
1.9.1

[PATCH 3.4 44/65] mm: kmemleak: allow safe memory scanning during kmemleak disabling

[lizf]

From: Catalin Marinas <catalin.marinas@arm.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit c5f3b1a51a591c18c8b33983908e7fdda6ae417e upstream.

The kmemleak scanning thread can run for minutes.  Callbacks like
kmemleak_free() are allowed during this time, the race being taken care
of by the object->lock spinlock.  Such lock also prevents a memory block
from being freed or unmapped while it is being scanned by blocking the
kmemleak_free() -> ...  -> __delete_object() function until the lock is
released in scan_object().

When a kmemleak error occurs (e.g.  it fails to allocate its metadata),
kmemleak_enabled is set and __delete_object() is no longer called on
freed objects.  If kmemleak_scan is running at the same time,
kmemleak_free() no longer waits for the object scanning to complete,
allowing the corresponding memory block to be freed or unmapped (in the
case of vfree()).  This leads to kmemleak_scan potentially triggering a
page fault.

This patch separates the kmemleak_free() enabling/disabling from the
overall kmemleak_enabled nob so that we can defer the disabling of the
object freeing tracking until the scanning thread completed.  The
kmemleak_free_part() is deliberately ignored by this patch since this is
only called during boot before the scanning thread started.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org>
Tested-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 mm/kmemleak.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index ad6ee88..c74827c 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -193,6 +193,8 @@ static struct kmem_cache *scan_area_cache;
 
 /* set if tracing memory operations is enabled */
 static atomic_t kmemleak_enabled = ATOMIC_INIT(0);
+/* same as above but only for the kmemleak_free() callback */
+static int kmemleak_free_enabled;
 /* set in the late_initcall if there were no errors */
 static atomic_t kmemleak_initialized = ATOMIC_INIT(0);
 /* enables or disables early logging of the memory operations */
@@ -936,7 +938,7 @@ void __ref kmemleak_free(const void *ptr)
 {
 	pr_debug("%s(0x%p)\n", __func__, ptr);
 
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
 		delete_object_full((unsigned long)ptr);
 	else if (atomic_read(&kmemleak_early_log))
 		log_early(KMEMLEAK_FREE, ptr, 0, 0);
@@ -976,7 +978,7 @@ void __ref kmemleak_free_percpu(const void __percpu *ptr)
 
 	pr_debug("%s(0x%p)\n", __func__, ptr);
 
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
 		for_each_possible_cpu(cpu)
 			delete_object_full((unsigned long)per_cpu_ptr(ptr,
 								      cpu));
@@ -1690,6 +1692,13 @@ static void kmemleak_do_cleanup(struct work_struct *work)
 	mutex_lock(&scan_mutex);
 	stop_scan_thread();
 
+	/*
+	 * Once the scan thread has stopped, it is safe to no longer track
+	 * object freeing. Ordering of the scan thread stopping and the memory
+	 * accesses below is guaranteed by the kthread_stop() function.
+	  */
+	kmemleak_free_enabled = 0;
+
 	if (cleanup) {
 		rcu_read_lock();
 		list_for_each_entry_rcu(object, &object_list, object_list)
@@ -1717,6 +1726,8 @@ static void kmemleak_disable(void)
 	/* check whether it is too early for a kernel thread */
 	if (atomic_read(&kmemleak_initialized))
 		schedule_work(&cleanup_work);
+	else
+		kmemleak_free_enabled = 0;
 
 	pr_info("Kernel memory leak detector disabled\n");
 }
@@ -1782,8 +1793,10 @@ void __init kmemleak_init(void)
 	if (atomic_read(&kmemleak_error)) {
 		local_irq_restore(flags);
 		return;
-	} else
+	} else {
 		atomic_set(&kmemleak_enabled, 1);
+		kmemleak_free_enabled = 1;
+	}
 	local_irq_restore(flags);
 
 	/*
-- 
1.9.1

[PATCH 3.4 45/65] dell-laptop: Fix allocating & freeing SMI buffer page

[lizf]

From: Pali Rohár <pali.rohar@gmail.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit b8830a4e71b15d0364ac8e6c55301eea73f211da upstream.

This commit fix kernel crash when probing for rfkill devices in dell-laptop
driver failed. Function free_page() was incorrectly used on struct page *
instead of virtual address of SMI buffer.

This commit also simplify allocating page for SMI buffer by using
__get_free_page() function instead of sequential call of functions
alloc_page() and page_address().

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/platform/x86/dell-laptop.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index e6c08ee..3d67591 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -216,7 +216,6 @@ static struct dmi_system_id __devinitdata dell_quirks[] = {
 };
 
 static struct calling_interface_buffer *buffer;
-static struct page *bufferpage;
 static DEFINE_MUTEX(buffer_mutex);
 
 static int hwswitch_state;
@@ -714,11 +713,10 @@ static int __init dell_init(void)
 	 * Allocate buffer below 4GB for SMI data--only 32-bit physical addr
 	 * is passed to SMI handler.
 	 */
-	bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32);
+	buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32);
 
-	if (!bufferpage)
+	if (!buffer)
 		goto fail_buffer;
-	buffer = page_address(bufferpage);
 
 	ret = dell_setup_rfkill();
 
@@ -787,7 +785,7 @@ fail_backlight:
 fail_filter:
 	dell_cleanup_rfkill();
 fail_rfkill:
-	free_page((unsigned long)bufferpage);
+	free_page((unsigned long)buffer);
 fail_buffer:
 	platform_device_del(platform_device);
 fail_platform_device2:
-- 
1.9.1

[PATCH 3.4 46/65] tracing/filter: Do not WARN on operand count going below zero

[lizf]

From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit b4875bbe7e68f139bd3383828ae8e994a0df6d28 upstream.

When testing the fix for the trace filter, I could not come up with
a scenario where the operand count goes below zero, so I added a
WARN_ON_ONCE(cnt < 0) to the logic. But there is legitimate case
that it can happen (although the filter would be wrong).

 # echo '>' > /sys/kernel/debug/events/ext4/ext4_truncate_exit/filter

That is, a single operation without any operands will hit the path
where the WARN_ON_ONCE() can trigger. Although this is harmless,
and the filter is reported as a error. But instead of spitting out
a warning to the kernel dmesg, just fail nicely and report it via
the proper channels.

Link: http://lkml.kernel.org/r/558C6082.90608@oracle.com

Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 kernel/trace/trace_events_filter.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 3b04aec..ae6c572 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1372,7 +1372,9 @@ static int check_preds(struct filter_parse_state *ps)
 		}
 		cnt--;
 		n_normal_preds++;
-		WARN_ON_ONCE(cnt < 0);
+		/* all ops should have operands */
+		if (cnt < 0)
+			break;
 	}
 
 	if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {
-- 
1.9.1

[PATCH 3.4 47/65] tracing/filter: Do not allow infix to exceed end of string

[lizf]

From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 6b88f44e161b9ee2a803e5b2b1fbcf4e20e8b980 upstream.

While debugging a WARN_ON() for filtering, I found that it is possible
for the filter string to be referenced after its end. With the filter:

 # echo '>' > /sys/kernel/debug/events/ext4/ext4_truncate_exit/filter

The filter_parse() function can call infix_get_op() which calls
infix_advance() that updates the infix filter pointers for the cnt
and tail without checking if the filter is already at the end, which
will put the cnt to zero and the tail beyond the end. The loop then calls
infix_next() that has

	ps->infix.cnt--;
	return ps->infix.string[ps->infix.tail++];

The cnt will now be below zero, and the tail that is returned is
already passed the end of the filter string. So far the allocation
of the filter string usually has some buffer that is zeroed out, but
if the filter string is of the exact size of the allocated buffer
there's no guarantee that the charater after the nul terminating
character will be zero.

Luckily, only root can write to the filter.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 kernel/trace/trace_events_filter.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index ae6c572..096d774 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1044,6 +1044,9 @@ static void parse_init(struct filter_parse_state *ps,
 
 static char infix_next(struct filter_parse_state *ps)
 {
+	if (!ps->infix.cnt)
+		return 0;
+
 	ps->infix.cnt--;
 
 	return ps->infix.string[ps->infix.tail++];
@@ -1059,6 +1062,9 @@ static char infix_peek(struct filter_parse_state *ps)
 
 static void infix_advance(struct filter_parse_state *ps)
 {
+	if (!ps->infix.cnt)
+		return;
+
 	ps->infix.cnt--;
 	ps->infix.tail++;
 }
-- 
1.9.1

[PATCH 3.4 48/65] __bitmap_parselist: fix bug in empty string handling

[lizf]

From: Chris Metcalf <cmetcalf@ezchip.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 2528a8b8f457d7432552d0e2b6f0f4046bb702f4 upstream.

bitmap_parselist("", &mask, nmaskbits) will erroneously set bit zero in
the mask.  The same bug is visible in cpumask_parselist() since it is
layered on top of the bitmask code, e.g.  if you boot with "isolcpus=",
you will actually end up with cpu zero isolated.

The bug was introduced in commit 4b060420a596 ("bitmap, irq: add
smp_affinity_list interface to /proc/irq") when bitmap_parselist() was
generalized to support userspace as well as kernelspace.

Fixes: 4b060420a596 ("bitmap, irq: add smp_affinity_list interface to /proc/irq")
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 lib/bitmap.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 6ccf212..f62496a 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -603,12 +603,12 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 	unsigned a, b;
 	int c, old_c, totaldigits;
 	const char __user __force *ubuf = (const char __user __force *)buf;
-	int exp_digit, in_range;
+	int at_start, in_range;
 
 	totaldigits = c = 0;
 	bitmap_zero(maskp, nmaskbits);
 	do {
-		exp_digit = 1;
+		at_start = 1;
 		in_range = 0;
 		a = b = 0;
 
@@ -637,11 +637,10 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 				break;
 
 			if (c == '-') {
-				if (exp_digit || in_range)
+				if (at_start || in_range)
 					return -EINVAL;
 				b = 0;
 				in_range = 1;
-				exp_digit = 1;
 				continue;
 			}
 
@@ -651,16 +650,18 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 			b = b * 10 + (c - '0');
 			if (!in_range)
 				a = b;
-			exp_digit = 0;
+			at_start = 0;
 			totaldigits++;
 		}
 		if (!(a <= b))
 			return -EINVAL;
 		if (b >= nmaskbits)
 			return -ERANGE;
-		while (a <= b) {
-			set_bit(a, maskp);
-			a++;
+		if (!at_start) {
+			while (a <= b) {
+				set_bit(a, maskp);
+				a++;
+			}
 		}
 	} while (buflen && c == ',');
 	return 0;
-- 
1.9.1

[PATCH 3.4 49/65] agp/intel: Fix typo in needs_ilk_vtd_wa()

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 8b572a4200828b4e75cc22ed2f494b58d5372d65 upstream.

In needs_ilk_vtd_wa(), we pass in the GPU device but compared it against
the ids for the mobile GPU and the mobile host bridge. That latter is
impossible and so likely was just a typo for the desktop GPU device id
(which is also buggy).

Fixes commit da88a5f7f7d434e2cde1b3e19d952e6d84533662
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Wed Feb 13 09:31:53 2013 +0000

    drm/i915: Disable WC PTE updates to w/a buggy IOMMU on ILK

Reported-by: Ting-Wei Lan <lantw44@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91127
References: https://bugzilla.freedesktop.org/show_bug.cgi?id=60391
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/char/agp/intel-gtt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 7f025fb..4e985cd 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1194,7 +1194,7 @@ static inline int needs_idle_maps(void)
 	/* Query intel_iommu to see if we need the workaround. Presumably that
 	 * was loaded first.
 	 */
-	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB ||
+	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG ||
 	     gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
 	     intel_iommu_gfx_mapped)
 		return 1;
-- 
1.9.1

[PATCH 3.4 50/65] crush: fix a bug in tree bucket decode

[lizf]

From: Ilya Dryomov <idryomov@gmail.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 82cd003a77173c91b9acad8033fb7931dac8d751 upstream.

struct crush_bucket_tree::num_nodes is u8, so ceph_decode_8_safe()
should be used.  -Wconversion catches this, but I guess it went
unnoticed in all the noise it spews.  The actual problem (at least for
common crushmaps) isn't the u32 -> u8 truncation though - it's the
advancement by 4 bytes instead of 1 in the crushmap buffer.

Fixes: http://tracker.ceph.com/issues/2759

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 net/ceph/osdmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 7fbe210..d4fbcb6 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -102,7 +102,7 @@ static int crush_decode_tree_bucket(void **p, void *end,
 {
 	int j;
 	dout("crush_decode_tree_bucket %p to %p\n", *p, end);
-	ceph_decode_32_safe(p, end, b->num_nodes, bad);
+	ceph_decode_8_safe(p, end, b->num_nodes, bad);
 	b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS);
 	if (b->node_weights == NULL)
 		return -ENOMEM;
-- 
1.9.1

[PATCH 3.4 51/65] fuse: initialize fc->release before calling it

[lizf]

From: Miklos Szeredi <mszeredi@suse.cz>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 0ad0b3255a08020eaf50e34ef0d6df5bdf5e09ed upstream.

fc->release is called from fuse_conn_put() which was used in the error
cleanup before fc->release was initialized.

[Jeremiah Mahler <jmmahler@gmail.com>: assign fc->release after calling
fuse_conn_init(fc) instead of before.]

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Fixes: a325f9b92273 ("fuse: update fuse_conn_init() and separate out fuse_conn_kill()")
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/fuse/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index a5c8b34..d8bc0a8 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -981,6 +981,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
 		goto err_fput;
 
 	fuse_conn_init(fc);
+	fc->release = fuse_free_conn;
 
 	fc->dev = sb->s_dev;
 	fc->sb = sb;
@@ -995,7 +996,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
 		fc->dont_mask = 1;
 	sb->s_flags |= MS_POSIXACL;
 
-	fc->release = fuse_free_conn;
 	fc->flags = d.flags;
 	fc->user_id = d.user_id;
 	fc->group_id = d.group_id;
-- 
1.9.1

[PATCH 3.4 52/65] ACPICA: Tables: Fix an issue that FACS initialization is performed twice

[lizf]

From: Lv Zheng <lv.zheng@intel.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit c04be18448355441a0c424362df65b6422e27bda upstream.

ACPICA commit 90f5332a15e9d9ba83831ca700b2b9f708274658

This patch adds a new FACS initialization flag for acpi_tb_initialize().
acpi_enable_subsystem() might be invoked several times in OS bootup process,
and we don't want FACS initialization to be invoked twice. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/90f5332a
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[lizf: Backported to 3.4: adjust filename]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/acpi/acpica/utxface.c | 10 ++++++----
 include/acpi/actypes.h        |  1 +
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index afa94f5..0985ab7 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -166,10 +166,12 @@ acpi_status acpi_enable_subsystem(u32 flags)
 	 * Obtain a permanent mapping for the FACS. This is required for the
 	 * Global Lock and the Firmware Waking Vector
 	 */
-	status = acpi_tb_initialize_facs();
-	if (ACPI_FAILURE(status)) {
-		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
-		return_ACPI_STATUS(status);
+	if (!(flags & ACPI_NO_FACS_INIT)) {
+		status = acpi_tb_initialize_facs();
+		if (ACPI_FAILURE(status)) {
+			ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+			return_ACPI_STATUS(status);
+		}
 	}
 #endif				/* !ACPI_REDUCED_HARDWARE */
 
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 6d52429..0460073 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -495,6 +495,7 @@ typedef u64 acpi_integer;
 #define ACPI_NO_ACPI_ENABLE             0x10
 #define ACPI_NO_DEVICE_INIT             0x20
 #define ACPI_NO_OBJECT_INIT             0x40
+#define ACPI_NO_FACS_INIT               0x80
 
 /*
  * Initialization state
-- 
1.9.1

[PATCH 3.4 53/65] KVM: x86: make vapics_in_nmi_mode atomic

[lizf]

From: Radim Krčmář <rkrcmar@redhat.com>

3.4.110-rc1 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>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 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 4f78757..d60facb 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -509,7 +509,7 @@ 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;
 
 	unsigned int tss_addr;
 	struct page *apic_access_page;
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index db336f9..eaad49a 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -317,7 +317,7 @@ static void pit_do_work(struct work_struct *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 578613d..f935b52 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -761,10 +761,10 @@ 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)
-- 
1.9.1

[PATCH 3.4 54/65] KVM: x86: properly restore LVT0

[lizf]

From: Radim Krčmář <rkrcmar@redhat.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit db1385624c686fe99fe2d1b61a36e1537b915d08 upstream.

Legacy NMI watchdog didn't work after migration/resume, because
vapics_in_nmi_mode was left at 0.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[lizf: Backported to 3.4:
 - adjust context
 - s/kvm_apic_get_reg/apic_get_reg/]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 arch/x86/kvm/lapic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index f935b52..53454a6 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1257,6 +1257,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu)
 
 	apic_update_ppr(apic);
 	hrtimer_cancel(&apic->lapic_timer.timer);
+	apic_manage_nmi_watchdog(apic, apic_get_reg(apic, APIC_LVT0));
 	update_divide_count(apic);
 	start_apic_timer(apic);
 	apic->irr_pending = true;
-- 
1.9.1

[PATCH 3.4 55/65] 9p: forgetting to cancel request on interrupted zero-copy RPC

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit a84b69cb6e0a41e86bc593904faa6def3b957343 upstream.

If we'd already sent a request and decide to abort it, we *must*
issue TFLUSH properly and not just blindly reuse the tag, or
we'll get seriously screwed when response eventually arrives
and we confuse it for response to later request that had reused
the same tag.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 net/9p/client.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/9p/client.c b/net/9p/client.c
index b23a17c..32df0a3 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -833,7 +833,8 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
 	if (err < 0) {
 		if (err == -EIO)
 			c->status = Disconnected;
-		goto reterr;
+		if (err != -ERESTARTSYS)
+			goto reterr;
 	}
 	if (req->status == REQ_STATUS_ERROR) {
 		p9_debug(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
-- 
1.9.1

[PATCH 3.4 56/65] Revert "drm/i915: Don't skip request retirement if the active list is empty"

[lizf]

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

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 245ec9d85696c3e539b23e210f248698b478379c upstream.

This reverts commit 0aedb1626566efd72b369c01992ee7413c82a0c5.

I messed things up while applying [1] to drm-intel-fixes. Rectify.

[1] http://mid.gmane.org/1432827156-9605-1-git-send-email-ville.syrjala@linux.intel.com

Fixes: 0aedb1626566 ("drm/i915: Don't skip request retirement if the active list is empty")
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/gpu/drm/i915/i915_gem.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e1c744d..b1f1d10 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1779,6 +1779,9 @@ i915_gem_retire_requests_ring(struct intel_ring_buffer *ring)
 	uint32_t seqno;
 	int i;
 
+	if (list_empty(&ring->request_list))
+		return;
+
 	WARN_ON(i915_verify_lists(ring->dev));
 
 	seqno = ring->get_seqno(ring);
-- 
1.9.1

[PATCH 3.4 57/65] Revert "drm/radeon: Use drm_calloc_ab for CS relocs"

[lizf]

From: Zefan Li <lizefan@huawei.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


This reverts commit 961bd13539b9e7ca5d2e667668141496b7a1d6bc.

Both Satoshi-san and Cal reported a kernel crash due to this commit.

Reported-by: Satoshi Iwamoto <satoshi.iwamoto@nifty.ne.jp>
Reported-by: Cal Peake <cp@absolutedigital.net>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/gpu/drm/radeon/radeon_cs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index d66d2cd..f3ee360 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -49,7 +49,7 @@ int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
 	if (p->relocs_ptr == NULL) {
 		return -ENOMEM;
 	}
-	p->relocs = drm_calloc_large(p->nrelocs, sizeof(struct radeon_bo_list));
+	p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
 	if (p->relocs == NULL) {
 		return -ENOMEM;
 	}
@@ -324,7 +324,7 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
 		}
 	}
 	kfree(parser->track);
-	drm_free_large(parser->relocs);
+	kfree(parser->relocs);
 	kfree(parser->relocs_ptr);
 	for (i = 0; i < parser->nchunks; i++) {
 		kfree(parser->chunks[i].kdata);
-- 
1.9.1

[PATCH 3.4 58/65] drm/radeon: partially revert "fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling"

[lizf]

From: Christian König <christian.koenig@amd.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 7c0411d2fabc2e2702c9871ffb603e251158b317 upstream.

We have that bug for years and some users report side effects when fixing it on older hardware.

So revert it for VM_CONTEXT0_PAGE_TABLE_END_ADDR, but keep it for VM 1-15.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[lizf: Backported to 3.4: drop the change to clk.c]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/gpu/drm/radeon/evergreen.c | 2 +-
 drivers/gpu/drm/radeon/ni.c        | 2 +-
 drivers/gpu/drm/radeon/r600.c      | 2 +-
 drivers/gpu/drm/radeon/rv770.c     | 2 +-
 drivers/gpu/drm/radeon/si.c        | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index db4df97..c5fe79e 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1079,7 +1079,7 @@ int evergreen_pcie_gart_enable(struct radeon_device *rdev)
 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 1f45179..461262e 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1075,7 +1075,7 @@ int cayman_pcie_gart_enable(struct radeon_device *rdev)
 	       L2_CACHE_BIGK_FRAGMENT_SIZE(6));
 	/* setup context0 */
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
 			(u32)(rdev->dummy_page.addr >> 12));
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d441aed..9c7062d 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -930,7 +930,7 @@ int r600_pcie_gart_enable(struct radeon_device *rdev)
 	WREG32(MC_VM_L1_TLB_MCB_RD_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
 	WREG32(MC_VM_L1_TLB_MCB_WR_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 3358730..1ec1255 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -158,7 +158,7 @@ int rv770_pcie_gart_enable(struct radeon_device *rdev)
 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 3b6e641..6609a23 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2537,7 +2537,7 @@ int si_pcie_gart_enable(struct radeon_device *rdev)
 	       L2_CACHE_BIGK_FRAGMENT_SIZE(0));
 	/* setup context0 */
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
 			(u32)(rdev->dummy_page.addr >> 12));
-- 
1.9.1

[PATCH 3.4 59/65] crypto: s390/ghash: Fix incorrect backport of a1cae34e23b1

[lizf]

From: Zefan Li <lizefan@huawei.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 arch/s390/crypto/ghash_s390.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/crypto/ghash_s390.c b/arch/s390/crypto/ghash_s390.c
index c2dac2e..69b5a4b 100644
--- a/arch/s390/crypto/ghash_s390.c
+++ b/arch/s390/crypto/ghash_s390.c
@@ -115,7 +115,7 @@ static int ghash_final(struct shash_desc *desc, u8 *dst)
 	struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
 
 	ghash_flush(dctx);
-	memcpy(dst, dtx->icv, GHASH_BLOCK_SIZE);
+	memcpy(dst, dctx->icv, GHASH_BLOCK_SIZE);
 
 	return 0;
 }
-- 
1.9.1

[PATCH 3.4 60/65] ARM: Fix incorrect backport of 0b59d8806a31

[lizf]

From: Zefan Li <lizefan@huawei.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


Reported-by: Jim Faulkner <jfaulkne@ccs.neu.edu>
Fixed-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 arch/arm/net/bpf_jit_32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index ad94145..77026415 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -899,7 +899,7 @@ void bpf_jit_compile(struct sk_filter *fp)
 		if (ctx.imm_count)
 			kfree(ctx.imms);
 #endif
-		bpf_jit_binary_free(header);
+		module_free(NULL, ctx.target);
 		goto out;
 	}
 	build_epilogue(&ctx);
-- 
1.9.1

[PATCH 3.4 61/65] usb: dwc3: Reset the transfer resource index on SET_INTERFACE

[lizf]

From: John Youn <John.Youn@synopsys.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit aebda618718157a69c0dc0adb978d69bc2b8723c upstream.

This fixes an issue introduced in commit b23c843992b6 (usb: dwc3:
gadget: fix DEPSTARTCFG for non-EP0 EPs) that made sure we would
only use DEPSTARTCFG once per SetConfig.

The trick is that we should use one DEPSTARTCFG per SetConfig *OR*
SetInterface. SetInterface was completely missed from the original
patch.

This problem became aparent after commit 76e838c9f776 (usb: dwc3:
gadget: return error if command sent to DEPCMD register fails)
added checking of the return status of device endpoint commands.

'Set Endpoint Transfer Resource' command was caught failing
occasionally. This is because the Transfer Resource
Index was not getting reset during a SET_INTERFACE request.

Finally, to fix the issue, was we have to do is make sure that
our start_config_issued flag gets reset whenever we receive a
SetInterface request.

To verify the problem (and its fix), all we have to do is run
test 9 from testusb with 'testusb -t 9 -s 2048 -a -c 5000'.

Tested-by: Huang Rui <ray.huang@amd.com>
Tested-by: Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@xilinx.com>
Fixes: b23c843992b6 (usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs)
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
[lizf: Backported to 3.4: use dev_vdbg() instead of dwc3_trace()]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/usb/dwc3/ep0.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 8a7a8ee..a8714fd 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -644,6 +644,10 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
 		dev_vdbg(dwc->dev, "Status Phase\n");
 		dwc3_ep0_complete_req(dwc, event);
 		break;
+	case USB_REQ_SET_INTERFACE:
+		dev_vdbg(dwc->dev, "USB_REQ_SET_INTERFACE\n");
+		dwc->start_config_issued = false;
+		/* Fall through */
 	default:
 		WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state);
 	}
-- 
1.9.1

[PATCH 3.4 62/65] jbd2: avoid infinite loop when destroying aborted journal

[lizf]

From: Jan Kara <jack@suse.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 841df7df196237ea63233f0f9eaa41db53afd70f upstream.

Commit 6f6a6fda2945 "jbd2: fix ocfs2 corrupt when updating journal
superblock fails" changed jbd2_cleanup_journal_tail() to return EIO
when the journal is aborted. That makes logic in
jbd2_log_do_checkpoint() bail out which is fine, except that
jbd2_journal_destroy() expects jbd2_log_do_checkpoint() to always make
a progress in cleaning the journal. Without it jbd2_journal_destroy()
just loops in an infinite loop.

Fix jbd2_journal_destroy() to cleanup journal checkpoint lists of
jbd2_log_do_checkpoint() fails with error.

Reported-by: Eryu Guan <guaneryu@gmail.com>
Tested-by: Eryu Guan <guaneryu@gmail.com>
Fixes: 6f6a6fda294506dfe0e3e0a253bb2d2923f28f0a
Signed-off-by: Jan Kara <jack@suse.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/jbd2/checkpoint.c | 39 +++++++++++++++++++++++++++++++++------
 fs/jbd2/commit.c     |  2 +-
 fs/jbd2/journal.c    | 11 ++++++++++-
 include/linux/jbd2.h |  3 ++-
 4 files changed, 46 insertions(+), 9 deletions(-)

diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index 6bb5285..4fd7856 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -467,14 +467,14 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
  * journal_clean_one_cp_list
  *
  * Find all the written-back checkpoint buffers in the given list and
- * release them.
+ * release them. If 'destroy' is set, clean all buffers unconditionally.
  *
  * Called with the journal locked.
  * Called with j_list_lock held.
  * Returns number of buffers reaped (for debug)
  */
 
-static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
+static int journal_clean_one_cp_list(struct journal_head *jh, int *released, bool destroy)
 {
 	struct journal_head *last_jh;
 	struct journal_head *next_jh = jh;
@@ -488,7 +488,10 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
 	do {
 		jh = next_jh;
 		next_jh = jh->b_cpnext;
-		ret = __try_to_free_cp_buf(jh);
+		if (!destroy)
+			ret = __try_to_free_cp_buf(jh);
+		else
+			ret = __jbd2_journal_remove_checkpoint(jh) + 1;
 		if (ret) {
 			freed++;
 			if (ret == 2) {
@@ -514,12 +517,14 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
  *
  * Find all the written-back checkpoint buffers in the journal and release them.
  *
+ * If 'destroy' is set, release all buffers unconditionally.
+ *
  * Called with the journal locked.
  * Called with j_list_lock held.
  * Returns number of buffers reaped (for debug)
  */
 
-int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
 {
 	transaction_t *transaction, *last_transaction, *next_transaction;
 	int ret = 0;
@@ -535,7 +540,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
 		transaction = next_transaction;
 		next_transaction = transaction->t_cpnext;
 		ret += journal_clean_one_cp_list(transaction->
-				t_checkpoint_list, &released);
+				t_checkpoint_list, &released, destroy);
 		/*
 		 * This function only frees up some memory if possible so we
 		 * dont have an obligation to finish processing. Bail out if
@@ -551,7 +556,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
 		 * we can possibly see not yet submitted buffers on io_list
 		 */
 		ret += journal_clean_one_cp_list(transaction->
-				t_checkpoint_io_list, &released);
+				t_checkpoint_io_list, &released, destroy);
 		if (need_resched())
 			goto out;
 	} while (transaction != last_transaction);
@@ -560,6 +565,28 @@ out:
 }
 
 /*
+ * Remove buffers from all checkpoint lists as journal is aborted and we just
+ * need to free memory
+ */
+void jbd2_journal_destroy_checkpoint(journal_t *journal)
+{
+	/*
+	 * We loop because __jbd2_journal_clean_checkpoint_list() may abort
+	 * early due to a need of rescheduling.
+	 */
+	while (1) {
+		spin_lock(&journal->j_list_lock);
+		if (!journal->j_checkpoint_transactions) {
+			spin_unlock(&journal->j_list_lock);
+			break;
+		}
+		__jbd2_journal_clean_checkpoint_list(journal, true);
+		spin_unlock(&journal->j_list_lock);
+		cond_resched();
+	}
+}
+
+/*
  * journal_remove_checkpoint: called after a buffer has been committed
  * to disk (either by being write-back flushed to disk, or being
  * committed to the log).
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index a0dcbd62..259f28d 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -438,7 +438,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	 * frees some memory
 	 */
 	spin_lock(&journal->j_list_lock);
-	__jbd2_journal_clean_checkpoint_list(journal);
+	__jbd2_journal_clean_checkpoint_list(journal, false);
 	spin_unlock(&journal->j_list_lock);
 
 	jbd_debug(3, "JBD2: commit phase 1\n");
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index ad64b94..a327944 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1591,8 +1591,17 @@ int jbd2_journal_destroy(journal_t *journal)
 	while (journal->j_checkpoint_transactions != NULL) {
 		spin_unlock(&journal->j_list_lock);
 		mutex_lock(&journal->j_checkpoint_mutex);
-		jbd2_log_do_checkpoint(journal);
+		err = jbd2_log_do_checkpoint(journal);
 		mutex_unlock(&journal->j_checkpoint_mutex);
+		/*
+		 * If checkpointing failed, just free the buffers to avoid
+		 * looping forever
+		 */
+		if (err) {
+			jbd2_journal_destroy_checkpoint(journal);
+			spin_lock(&journal->j_list_lock);
+			break;
+		}
 		spin_lock(&journal->j_list_lock);
 	}
 
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 129bca4..2179d78 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -981,8 +981,9 @@ void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
 extern void jbd2_journal_commit_transaction(journal_t *);
 
 /* Checkpoint list management */
-int __jbd2_journal_clean_checkpoint_list(journal_t *journal);
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy);
 int __jbd2_journal_remove_checkpoint(struct journal_head *);
+void jbd2_journal_destroy_checkpoint(journal_t *journal);
 void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *);
 
 
-- 
1.9.1

[PATCH 3.4 63/65] IB/qib: Change lkey table allocation to support more MRs

[lizf]

From: Mike Marciniszyn <mike.marciniszyn@intel.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit d6f1c17e162b2a11e708f28fa93f2f79c164b442 upstream.

The lkey table is allocated with with a get_user_pages() with an
order based on a number of index bits from a module parameter.

The underlying kernel code cannot allocate that many contiguous pages.

There is no reason the underlying memory needs to be physically
contiguous.

This patch:
- switches the allocation/deallocation to vmalloc/vfree
- caps the number of bits to 23 to insure at least 1 generation bit
  o this matches the module parameter description

Reviewed-by: Vinit Agnihotri <vinit.abhay.agnihotri@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
[bwh: Backported to 3.2:
 - Adjust context
 - Add definition of qib_dev_warn(), added upstream by commit ddb887658970
   ("IB/qib: Convert opcode counters to per-context")]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 drivers/infiniband/hw/qib/qib.h       |  4 ++++
 drivers/infiniband/hw/qib/qib_keys.c  |  4 ++++
 drivers/infiniband/hw/qib/qib_verbs.c | 14 ++++++++++----
 drivers/infiniband/hw/qib/qib_verbs.h |  2 ++
 4 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index c7d4ef1..dcff64f 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -1429,6 +1429,10 @@ extern struct mutex qib_mutex;
 			qib_get_unit_name((dd)->unit), ##__VA_ARGS__); \
 	} while (0)
 
+#define qib_dev_warn(dd, fmt, ...) \
+	dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \
+		qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
+
 #define qib_dev_porterr(dd, port, fmt, ...) \
 	do { \
 		dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \
diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index 8fd19a4..ca6e6cf 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -69,6 +69,10 @@ int qib_alloc_lkey(struct qib_lkey_table *rkt, struct qib_mregion *mr)
 	 * unrestricted LKEY.
 	 */
 	rkt->gen++;
+	/*
+	 * bits are capped in qib_verbs.c to insure enough bits
+	 * for generation number
+	 */
 	mr->lkey = (r << (32 - ib_qib_lkey_table_size)) |
 		((((1 << (24 - ib_qib_lkey_table_size)) - 1) & rkt->gen)
 		 << 8);
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 7b6c3bf..395d9d6 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -40,6 +40,7 @@
 #include <linux/rculist.h>
 #include <linux/mm.h>
 #include <linux/random.h>
+#include <linux/vmalloc.h>
 
 #include "qib.h"
 #include "qib_common.h"
@@ -2058,10 +2059,16 @@ int qib_register_ib_device(struct qib_devdata *dd)
 	 * the LKEY).  The remaining bits act as a generation number or tag.
 	 */
 	spin_lock_init(&dev->lk_table.lock);
+	/* insure generation is at least 4 bits see keys.c */
+	if (ib_qib_lkey_table_size > MAX_LKEY_TABLE_BITS) {
+		qib_dev_warn(dd, "lkey bits %u too large, reduced to %u\n",
+			ib_qib_lkey_table_size, MAX_LKEY_TABLE_BITS);
+		ib_qib_lkey_table_size = MAX_LKEY_TABLE_BITS;
+	}
 	dev->lk_table.max = 1 << ib_qib_lkey_table_size;
 	lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
 	dev->lk_table.table = (struct qib_mregion **)
-		__get_free_pages(GFP_KERNEL, get_order(lk_tab_size));
+		vmalloc(lk_tab_size);
 	if (dev->lk_table.table == NULL) {
 		ret = -ENOMEM;
 		goto err_lk;
@@ -2231,7 +2238,7 @@ err_tx:
 					sizeof(struct qib_pio_header),
 				  dev->pio_hdrs, dev->pio_hdrs_phys);
 err_hdrs:
-	free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size));
+	vfree(dev->lk_table.table);
 err_lk:
 	kfree(dev->qp_table);
 err_qpt:
@@ -2285,7 +2292,6 @@ void qib_unregister_ib_device(struct qib_devdata *dd)
 					sizeof(struct qib_pio_header),
 				  dev->pio_hdrs, dev->pio_hdrs_phys);
 	lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
-	free_pages((unsigned long) dev->lk_table.table,
-		   get_order(lk_tab_size));
+	vfree(dev->lk_table.table);
 	kfree(dev->qp_table);
 }
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 0c19ef0..66f7f62 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -622,6 +622,8 @@ struct qib_qpn_table {
 	struct qpn_map map[QPNMAP_ENTRIES];
 };
 
+#define MAX_LKEY_TABLE_BITS 23
+
 struct qib_lkey_table {
 	spinlock_t lock; /* protect changes in this struct */
 	u32 next;               /* next unused index (speeds search) */
-- 
1.9.1

[PATCH 3.4 64/65] dcache: Handle escaped paths in prepend_path

[lizf]

From: "Eric W. Biederman" <ebiederm@xmission.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit cde93be45a8a90d8c264c776fab63487b5038a65 upstream.

A rename can result in a dentry that by walking up d_parent
will never reach it's mnt_root.  For lack of a better term
I call this an escaped path.

prepend_path is called by four different functions __d_path,
d_absolute_path, d_path, and getcwd.

__d_path only wants to see paths are connected to the root it passes
in.  So __d_path needs prepend_path to return an error.

d_absolute_path similarly wants to see paths that are connected to
some root.  Escaped paths are not connected to any mnt_root so
d_absolute_path needs prepend_path to return an error greater
than 1.  So escaped paths will be treated like paths on lazily
unmounted mounts.

getcwd needs to prepend "(unreachable)" so getcwd also needs
prepend_path to return an error.

d_path is the interesting hold out.  d_path just wants to print
something, and does not care about the weird cases.  Which raises
the question what should be printed?

Given that <escaped_path>/<anything> should result in -ENOENT I
believe it is desirable for escaped paths to be printed as empty
paths.  As there are not really any meaninful path components when
considered from the perspective of a mount tree.

So tweak prepend_path to return an empty path with an new error
code of 3 when it encounters an escaped path.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
 fs/dcache.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/fs/dcache.c b/fs/dcache.c
index d071ea7..03eb2c2 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2518,6 +2518,8 @@ static int prepend_path(const struct path *path,
 	struct dentry *dentry = path->dentry;
 	struct vfsmount *vfsmnt = path->mnt;
 	struct mount *mnt = real_mount(vfsmnt);
+	char *orig_buffer = *buffer;
+	int orig_len = *buflen;
 	bool slash = false;
 	int error = 0;
 
@@ -2525,6 +2527,14 @@ static int prepend_path(const struct path *path,
 		struct dentry * parent;
 
 		if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
+			/* Escaped? */
+			if (dentry != vfsmnt->mnt_root) {
+				*buffer = orig_buffer;
+				*buflen = orig_len;
+				slash = false;
+				error = 3;
+				goto global_root;
+			}
 			/* Global root? */
 			if (!mnt_has_parent(mnt))
 				goto global_root;
-- 
1.9.1

[PATCH 3.4 65/65] vfs: Test for and handle paths that are unreachable from their mnt_root

[lizf]

From: "Eric W. Biederman" <ebiederm@xmission.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 397d425dc26da728396e66d392d5dcb8dac30c37 upstream.

In rare cases a directory can be renamed out from under a bind mount.
In those cases without special handling it becomes possible to walk up
the directory tree to the root dentry of the filesystem and down
from the root dentry to every other file or directory on the filesystem.

Like division by zero .. from an unconnected path can not be given
a useful semantic as there is no predicting at which path component
the code will realize it is unconnected.  We certainly can not match
the current behavior as the current behavior is a security hole.

Therefore when encounting .. when following an unconnected path
return -ENOENT.

- Add a function path_connected to verify path->dentry is reachable
  from path->mnt.mnt_root.  AKA to validate that rename did not do
  something nasty to the bind mount.

  To avoid races path_connected must be called after following a path
  component to it's next path component.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/namei.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 9c4b9b8..4fc034f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -397,6 +397,24 @@ void path_put(struct path *path)
 }
 EXPORT_SYMBOL(path_put);
 
+/**
+ * path_connected - Verify that a path->dentry is below path->mnt.mnt_root
+ * @path: nameidate to verify
+ *
+ * Rename can sometimes move a file or directory outside of a bind
+ * mount, path_connected allows those cases to be detected.
+ */
+static bool path_connected(const struct path *path)
+{
+	struct vfsmount *mnt = path->mnt;
+
+	/* Only bind mounts can have disconnected paths */
+	if (mnt->mnt_root == mnt->mnt_sb->s_root)
+		return true;
+
+	return is_subdir(path->dentry, mnt->mnt_root);
+}
+
 /*
  * Path walking has 2 modes, rcu-walk and ref-walk (see
  * Documentation/filesystems/path-lookup.txt).  In situations when we can't
@@ -945,6 +963,8 @@ static int follow_dotdot_rcu(struct nameidata *nd)
 				goto failed;
 			nd->path.dentry = parent;
 			nd->seq = seq;
+			if (unlikely(!path_connected(&nd->path)))
+				goto failed;
 			break;
 		}
 		if (!follow_up_rcu(&nd->path))
@@ -1029,7 +1049,7 @@ static void follow_mount(struct path *path)
 	}
 }
 
-static void follow_dotdot(struct nameidata *nd)
+static int follow_dotdot(struct nameidata *nd)
 {
 	if (!nd->root.mnt)
 		set_root(nd);
@@ -1045,6 +1065,10 @@ static void follow_dotdot(struct nameidata *nd)
 			/* rare case of legitimate dget_parent()... */
 			nd->path.dentry = dget_parent(nd->path.dentry);
 			dput(old);
+			if (unlikely(!path_connected(&nd->path))) {
+				path_put(&nd->path);
+				return -ENOENT;
+			}
 			break;
 		}
 		if (!follow_up(&nd->path))
@@ -1052,6 +1076,7 @@ static void follow_dotdot(struct nameidata *nd)
 	}
 	follow_mount(&nd->path);
 	nd->inode = nd->path.dentry->d_inode;
+	return 0;
 }
 
 /*
@@ -1252,7 +1277,7 @@ static inline int handle_dots(struct nameidata *nd, int type)
 			if (follow_dotdot_rcu(nd))
 				return -ECHILD;
 		} else
-			follow_dotdot(nd);
+			return follow_dotdot(nd);
 	}
 	return 0;
 }
-- 
1.9.1

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Zefan Li]

This is the combined patch for 3.4.110-rc1 relative to 3.4.109.

---

diff --git a/Documentation/networking/pktgen.txt b/Documentation/networking/pktgen.txt
index 75e4fd7..a03239c 100644
--- a/Documentation/networking/pktgen.txt
+++ b/Documentation/networking/pktgen.txt
@@ -24,17 +24,33 @@ For monitoring and control pktgen creates:
          /proc/net/pktgen/ethX
  
  
-Viewing threads
-===============
-/proc/net/pktgen/kpktgend_0
-Name: kpktgend_0  max_before_softirq: 10000
-Running:
-Stopped: eth1
-Result: OK: max_before_softirq=10000
+Kernel threads
+==============
+Pktgen creates a thread for each CPU with affinity to that CPU.
+Which is controlled through procfile /proc/net/pktgen/kpktgend_X.
+
+Example: /proc/net/pktgen/kpktgend_0
+
+ Running:
+ Stopped: eth4@0
+ Result: OK: add_device=eth4@0
+
+Most important are the devices assigned to the thread.
  
-Most important the devices assigned to thread. Note! A device can only belong
-to one thread.
+The two basic thread commands are:
+ * add_device DEVICE@NAME -- adds a single device
+ * rem_device_all         -- remove all associated devices
  
+When adding a device to a thread, a corrosponding procfile is created
+which is used for configuring this device. Thus, device names need to
+be unique.
+
+To support adding the same device to multiple threads, which is useful
+with multi queue NICs, a the device naming scheme is extended with "@":
+ device@something
+
+The part after "@" can be anything, but it is custom to use the thread
+number.
  
  Viewing devices
  ===============
@@ -42,29 +58,32 @@ Viewing devices
  Parm section holds configured info. Current hold running stats.
  Result is printed after run or after interruption. Example:
  
-/proc/net/pktgen/eth1
+/proc/net/pktgen/eth4@0
  
-Params: count 10000000  min_pkt_size: 60  max_pkt_size: 60
-     frags: 0  delay: 0  clone_skb: 1000000  ifname: eth1
+ Params: count 100000  min_pkt_size: 60  max_pkt_size: 60
+     frags: 0  delay: 0  clone_skb: 64  ifname: eth4@0
       flows: 0 flowlen: 0
-     dst_min: 10.10.11.2  dst_max:
-     src_min:   src_max:
-     src_mac: 00:00:00:00:00:00  dst_mac: 00:04:23:AC:FD:82
-     udp_src_min: 9  udp_src_max: 9  udp_dst_min: 9  udp_dst_max: 9
-     src_mac_count: 0  dst_mac_count: 0
-     Flags:
-Current:
-     pkts-sofar: 10000000  errors: 39664
-     started: 1103053986245187us  stopped: 1103053999346329us idle: 880401us
-     seq_num: 10000011  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
-     cur_saddr: 0x10a0a0a  cur_daddr: 0x20b0a0a
-     cur_udp_dst: 9  cur_udp_src: 9
+     queue_map_min: 0  queue_map_max: 0
+     dst_min: 192.168.81.2  dst_max:
+     src_min:   src_max:
+     src_mac: 90:e2:ba:0a:56:b4 dst_mac: 00:1b:21:3c:9d:f8
+     udp_src_min: 9  udp_src_max: 109  udp_dst_min: 9  udp_dst_max: 9
+     src_mac_count: 0  dst_mac_count: 0
+     Flags: UDPSRC_RND  NO_TIMESTAMP  QUEUE_MAP_CPU
+ Current:
+     pkts-sofar: 100000  errors: 0
+     started: 623913381008us  stopped: 623913396439us idle: 25us
+     seq_num: 100001  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
+     cur_saddr: 192.168.8.3  cur_daddr: 192.168.81.2
+     cur_udp_dst: 9  cur_udp_src: 42
+     cur_queue_map:
       flows: 0
-Result: OK: 13101142(c12220741+d880401) usec, 10000000 (60byte,0frags)
-  763292pps 390Mb/sec (390805504bps) errors: 39664
+ Result: OK: 15430(c15405d25) usec, 100000 (60byte,0frags)
+  6480562pps 3110Mb/sec (3110669760bps) errors: 0
  
-Configuring threads and devices
-================================
+
+Configuring devices
+===================
  This is done via the /proc interface easiest done via pgset in the scripts
  
  Examples:
@@ -177,6 +196,8 @@ Note when adding devices to a specific CPU there good idea to also assign
  /proc/irq/XX/smp_affinity so the TX-interrupts gets bound to the same CPU.
  as this reduces cache bouncing when freeing skb's.
  
+Plus using the device flag QUEUE_MAP_CPU, which maps the SKBs TX queue
+to the running threads CPU (directly from smp_processor_id()).
  
  Current commands and configuration options
  ==========================================
diff --git a/Makefile b/Makefile
index 7337720..a4b2383 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
  VERSION = 3
  PATCHLEVEL = 4
-SUBLEVEL = 109
-EXTRAVERSION =
+SUBLEVEL = 110
+EXTRAVERSION = -rc1
  NAME = Saber-toothed Squirrel
  
  # *DOCUMENTATION*
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index ad94145..77026415 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -899,7 +899,7 @@ void bpf_jit_compile(struct sk_filter *fp)
  		if (ctx.imm_count)
  			kfree(ctx.imms);
  #endif
-		bpf_jit_binary_free(header);
+		module_free(NULL, ctx.target);
  		goto out;
  	}
  	build_epilogue(&ctx);
diff --git a/arch/s390/crypto/ghash_s390.c b/arch/s390/crypto/ghash_s390.c
index c2dac2e..69b5a4b 100644
--- a/arch/s390/crypto/ghash_s390.c
+++ b/arch/s390/crypto/ghash_s390.c
@@ -115,7 +115,7 @@ static int ghash_final(struct shash_desc *desc, u8 *dst)
  	struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
  
  	ghash_flush(dctx);
-	memcpy(dst, dtx->icv, GHASH_BLOCK_SIZE);
+	memcpy(dst, dctx->icv, GHASH_BLOCK_SIZE);
  
  	return 0;
  }
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 4f78757..d60facb 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -509,7 +509,7 @@ 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;
  
  	unsigned int tss_addr;
  	struct page *apic_access_page;
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index db336f9..eaad49a 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -317,7 +317,7 @@ static void pit_do_work(struct work_struct *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 578613d..53454a6 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -761,10 +761,10 @@ 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)
@@ -1257,6 +1257,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu)
  
  	apic_update_ppr(apic);
  	hrtimer_cancel(&apic->lapic_timer.timer);
+	apic_manage_nmi_watchdog(apic, apic_get_reg(apic, APIC_LVT0));
  	update_divide_count(apic);
  	start_apic_timer(apic);
  	apic->irr_pending = true;
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index ed2835e..65cf4f2 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -70,6 +70,17 @@ static const struct dmi_system_id pci_use_crs_table[] __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.. */
  
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index afa94f5..0985ab7 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -166,10 +166,12 @@ acpi_status acpi_enable_subsystem(u32 flags)
  	 * Obtain a permanent mapping for the FACS. This is required for the
  	 * Global Lock and the Firmware Waking Vector
  	 */
-	status = acpi_tb_initialize_facs();
-	if (ACPI_FAILURE(status)) {
-		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
-		return_ACPI_STATUS(status);
+	if (!(flags & ACPI_NO_FACS_INIT)) {
+		status = acpi_tb_initialize_facs();
+		if (ACPI_FAILURE(status)) {
+			ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+			return_ACPI_STATUS(status);
+		}
  	}
  #endif				/* !ACPI_REDUCED_HARDWARE */
  
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 8e81f85..0ac67ac 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -784,7 +784,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
  			ret = regmap_read(map, reg + i, &ival);
  			if (ret != 0)
  				return ret;
-			memcpy(val + (i * val_bytes), &ival, val_bytes);
+			map->format.format_val(val + (i * val_bytes), ival);
  		}
  	}
  
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 52be498..4b8e03f 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -104,6 +104,7 @@ 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) },
@@ -153,6 +154,7 @@ 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, 0xE03C), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f8a58db..bbd1e6c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -182,6 +182,7 @@ 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 },
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 7f025fb..4e985cd 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1194,7 +1194,7 @@ static inline int needs_idle_maps(void)
  	/* Query intel_iommu to see if we need the workaround. Presumably that
  	 * was loaded first.
  	 */
-	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB ||
+	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG ||
  	     gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
  	     intel_iommu_gfx_mapped)
  		return 1;
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 921039e..a759fdc 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -2653,6 +2653,7 @@ 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);
  	}
  
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index fa5d55f..c8fecbc 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -390,7 +390,8 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
  	dma_cookie_t cookie = 0;
  	int busy = mv_chan_is_busy(mv_chan);
  	u32 current_desc = mv_chan_get_current_desc(mv_chan);
-	int seen_current = 0;
+	int current_cleaned = 0;
+	struct mv_xor_desc *hw_desc;
  
  	dev_dbg(mv_chan->device->common.dev, "%s %d\n", __func__, __LINE__);
  	dev_dbg(mv_chan->device->common.dev, "current_desc %x\n", current_desc);
@@ -402,38 +403,57 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
  
  	list_for_each_entry_safe(iter, _iter, &mv_chan->chain,
  					chain_node) {
-		prefetch(_iter);
-		prefetch(&_iter->async_tx);
  
-		/* do not advance past the current descriptor loaded into the
-		 * hardware channel, subsequent descriptors are either in
-		 * process or have not been submitted
-		 */
-		if (seen_current)
-			break;
+		/* clean finished descriptors */
+		hw_desc = iter->hw_desc;
+		if (hw_desc->status & XOR_DESC_SUCCESS) {
+			cookie = mv_xor_run_tx_complete_actions(iter, mv_chan,
+								cookie);
  
-		/* stop the search if we reach the current descriptor and the
-		 * channel is busy
-		 */
-		if (iter->async_tx.phys == current_desc) {
-			seen_current = 1;
-			if (busy)
+			/* done processing desc, clean slot */
+			mv_xor_clean_slot(iter, mv_chan);
+
+			/* break if we did cleaned the current */
+			if (iter->async_tx.phys == current_desc) {
+				current_cleaned = 1;
+				break;
+			}
+		} else {
+			if (iter->async_tx.phys == current_desc) {
+				current_cleaned = 0;
  				break;
+			}
  		}
-
-		cookie = mv_xor_run_tx_complete_actions(iter, mv_chan, cookie);
-
-		if (mv_xor_clean_slot(iter, mv_chan))
-			break;
  	}
  
  	if ((busy == 0) && !list_empty(&mv_chan->chain)) {
-		struct mv_xor_desc_slot *chain_head;
-		chain_head = list_entry(mv_chan->chain.next,
-					struct mv_xor_desc_slot,
-					chain_node);
-
-		mv_xor_start_new_chain(mv_chan, chain_head);
+		if (current_cleaned) {
+			/*
+			 * current descriptor cleaned and removed, run
+			 * from list head
+			 */
+			iter = list_entry(mv_chan->chain.next,
+					  struct mv_xor_desc_slot,
+					  chain_node);
+			mv_xor_start_new_chain(mv_chan, iter);
+		} else {
+			if (!list_is_last(&iter->chain_node, &mv_chan->chain)) {
+				/*
+				 * descriptors are still waiting after
+				 * current, trigger them
+				 */
+				iter = list_entry(iter->chain_node.next,
+						  struct mv_xor_desc_slot,
+						  chain_node);
+				mv_xor_start_new_chain(mv_chan, iter);
+			} else {
+				/*
+				 * some descriptors are still waiting
+				 * to be cleaned
+				 */
+				tasklet_schedule(&mv_chan->irq_tasklet);
+			}
+		}
  	}
  
  	if (cookie > 0)
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index 654876b..0af0377 100644
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -30,6 +30,7 @@
  #define XOR_OPERATION_MODE_XOR		0
  #define XOR_OPERATION_MODE_MEMCPY	2
  #define XOR_OPERATION_MODE_MEMSET	4
+#define XOR_DESC_SUCCESS		0x40000000
  
  #define XOR_CURR_DESC(chan)	(chan->mmr_base + 0x210 + (chan->idx * 4))
  #define XOR_NEXT_DESC(chan)	(chan->mmr_base + 0x200 + (chan->idx * 4))
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e1c744d..b1f1d10 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1779,6 +1779,9 @@ i915_gem_retire_requests_ring(struct intel_ring_buffer *ring)
  	uint32_t seqno;
  	int i;
  
+	if (list_empty(&ring->request_list))
+		return;
+
  	WARN_ON(i915_verify_lists(ring->dev));
  
  	seqno = ring->get_seqno(ring);
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index db4df97..c5fe79e 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1079,7 +1079,7 @@ int evergreen_pcie_gart_enable(struct radeon_device *rdev)
  	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
  	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
  	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
  				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 1f45179..461262e 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1075,7 +1075,7 @@ int cayman_pcie_gart_enable(struct radeon_device *rdev)
  	       L2_CACHE_BIGK_FRAGMENT_SIZE(6));
  	/* setup context0 */
  	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
  	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
  			(u32)(rdev->dummy_page.addr >> 12));
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d441aed..9c7062d 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -930,7 +930,7 @@ int r600_pcie_gart_enable(struct radeon_device *rdev)
  	WREG32(MC_VM_L1_TLB_MCB_RD_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
  	WREG32(MC_VM_L1_TLB_MCB_WR_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
  	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
  				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index d66d2cd..f3ee360 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -49,7 +49,7 @@ int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
  	if (p->relocs_ptr == NULL) {
  		return -ENOMEM;
  	}
-	p->relocs = drm_calloc_large(p->nrelocs, sizeof(struct radeon_bo_list));
+	p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
  	if (p->relocs == NULL) {
  		return -ENOMEM;
  	}
@@ -324,7 +324,7 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
  		}
  	}
  	kfree(parser->track);
-	drm_free_large(parser->relocs);
+	kfree(parser->relocs);
  	kfree(parser->relocs_ptr);
  	for (i = 0; i < parser->nchunks; i++) {
  		kfree(parser->chunks[i].kdata);
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 645dcbf..77c456d 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -51,10 +51,12 @@ static void radeon_hotplug_work_func(struct work_struct *work)
  	struct drm_mode_config *mode_config = &dev->mode_config;
  	struct drm_connector *connector;
  
+	mutex_lock(&mode_config->mutex);
  	if (mode_config->num_connector) {
  		list_for_each_entry(connector, &mode_config->connector_list, head)
  			radeon_connector_hotplug(connector);
  	}
+	mutex_unlock(&mode_config->mutex);
  	/* Just fire off a uevent and let userspace tell us what to do */
  	drm_helper_hpd_irq_event(dev);
  }
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 3358730..1ec1255 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -158,7 +158,7 @@ int rv770_pcie_gart_enable(struct radeon_device *rdev)
  	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
  	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
  	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
  				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 3b6e641..6609a23 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2537,7 +2537,7 @@ int si_pcie_gart_enable(struct radeon_device *rdev)
  	       L2_CACHE_BIGK_FRAGMENT_SIZE(0));
  	/* setup context0 */
  	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
  	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
  	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
  			(u32)(rdev->dummy_page.addr >> 12));
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index c7d4ef1..dcff64f 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -1429,6 +1429,10 @@ extern struct mutex qib_mutex;
  			qib_get_unit_name((dd)->unit), ##__VA_ARGS__); \
  	} while (0)
  
+#define qib_dev_warn(dd, fmt, ...) \
+	dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \
+		qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
+
  #define qib_dev_porterr(dd, port, fmt, ...) \
  	do { \
  		dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \
diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index 8fd19a4..ca6e6cf 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -69,6 +69,10 @@ int qib_alloc_lkey(struct qib_lkey_table *rkt, struct qib_mregion *mr)
  	 * unrestricted LKEY.
  	 */
  	rkt->gen++;
+	/*
+	 * bits are capped in qib_verbs.c to insure enough bits
+	 * for generation number
+	 */
  	mr->lkey = (r << (32 - ib_qib_lkey_table_size)) |
  		((((1 << (24 - ib_qib_lkey_table_size)) - 1) & rkt->gen)
  		 << 8);
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 7b6c3bf..395d9d6 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -40,6 +40,7 @@
  #include <linux/rculist.h>
  #include <linux/mm.h>
  #include <linux/random.h>
+#include <linux/vmalloc.h>
  
  #include "qib.h"
  #include "qib_common.h"
@@ -2058,10 +2059,16 @@ int qib_register_ib_device(struct qib_devdata *dd)
  	 * the LKEY).  The remaining bits act as a generation number or tag.
  	 */
  	spin_lock_init(&dev->lk_table.lock);
+	/* insure generation is at least 4 bits see keys.c */
+	if (ib_qib_lkey_table_size > MAX_LKEY_TABLE_BITS) {
+		qib_dev_warn(dd, "lkey bits %u too large, reduced to %u\n",
+			ib_qib_lkey_table_size, MAX_LKEY_TABLE_BITS);
+		ib_qib_lkey_table_size = MAX_LKEY_TABLE_BITS;
+	}
  	dev->lk_table.max = 1 << ib_qib_lkey_table_size;
  	lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
  	dev->lk_table.table = (struct qib_mregion **)
-		__get_free_pages(GFP_KERNEL, get_order(lk_tab_size));
+		vmalloc(lk_tab_size);
  	if (dev->lk_table.table == NULL) {
  		ret = -ENOMEM;
  		goto err_lk;
@@ -2231,7 +2238,7 @@ err_tx:
  					sizeof(struct qib_pio_header),
  				  dev->pio_hdrs, dev->pio_hdrs_phys);
  err_hdrs:
-	free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size));
+	vfree(dev->lk_table.table);
  err_lk:
  	kfree(dev->qp_table);
  err_qpt:
@@ -2285,7 +2292,6 @@ void qib_unregister_ib_device(struct qib_devdata *dd)
  					sizeof(struct qib_pio_header),
  				  dev->pio_hdrs, dev->pio_hdrs_phys);
  	lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
-	free_pages((unsigned long) dev->lk_table.table,
-		   get_order(lk_tab_size));
+	vfree(dev->lk_table.table);
  	kfree(dev->qp_table);
  }
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 0c19ef0..66f7f62 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -622,6 +622,8 @@ struct qib_qpn_table {
  	struct qpn_map map[QPNMAP_ENTRIES];
  };
  
+#define MAX_LKEY_TABLE_BITS 23
+
  struct qib_lkey_table {
  	spinlock_t lock; /* protect changes in this struct */
  	u32 next;               /* next unused index (speeds search) */
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c32a909..47a789e 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1372,9 +1372,11 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
  			break;
  		case MMC_BLK_CMD_ERR:
  			ret = mmc_blk_cmd_err(md, card, brq, req, ret);
-			if (!mmc_blk_reset(md, card->host, type))
-				break;
-			goto cmd_abort;
+			if (mmc_blk_reset(md, card->host, type))
+				goto cmd_abort;
+			if (!ret)
+				goto start_new_req;
+			break;
  		case MMC_BLK_RETRY:
  			if (retry++ < 5)
  				break;
diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c
index 080f060..86598a1 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...
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index f1f0671..1917f7d 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -214,6 +214,7 @@ 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;
@@ -237,6 +238,7 @@ 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;
@@ -247,6 +249,7 @@ 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;
@@ -261,6 +264,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
  		return ret;
  
  	mutex_lock(&dev->lock);
+	mutex_lock(&mtd_table_mutex);
  
  	if (--dev->open)
  		goto unlock;
@@ -273,6 +277,7 @@ static int 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);
  	return ret;
diff --git a/drivers/net/ethernet/stmicro/stmmac/descs.h b/drivers/net/ethernet/stmicro/stmmac/descs.h
index 9820ec8..e93a0bf 100644
--- a/drivers/net/ethernet/stmicro/stmmac/descs.h
+++ b/drivers/net/ethernet/stmicro/stmmac/descs.h
@@ -153,6 +153,8 @@ struct dma_desc {
  			u32 buffer2_size:13;
  			u32 reserved4:3;
  		} etx;		/* -- enhanced -- */
+
+		u64 all_flags;
  	} des01;
  	unsigned int des2;
  	unsigned int des3;
diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
index ad1b627..e0db6f6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
@@ -232,6 +232,7 @@ static void enh_desc_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
  {
  	int i;
  	for (i = 0; i < ring_size; i++) {
+		p->des01.all_flags = 0;
  		p->des01.erx.own = 1;
  		p->des01.erx.buffer1_size = BUF_SIZE_8KiB - 1;
  
@@ -248,7 +249,7 @@ static void enh_desc_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
  	int i;
  
  	for (i = 0; i < ring_size; i++) {
-		p->des01.etx.own = 0;
+		p->des01.all_flags = 0;
  		ehn_desc_tx_set_on_ring_chain(p, (i == ring_size - 1));
  		p++;
  	}
@@ -271,6 +272,7 @@ static void enh_desc_set_tx_owner(struct dma_desc *p)
  
  static void enh_desc_set_rx_owner(struct dma_desc *p)
  {
+	p->des01.all_flags = 0;
  	p->des01.erx.own = 1;
  }
  
diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
index 25953bb..9703340 100644
--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
@@ -126,6 +126,7 @@ static void ndesc_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
  {
  	int i;
  	for (i = 0; i < ring_size; i++) {
+		p->des01.all_flags = 0;
  		p->des01.rx.own = 1;
  		p->des01.rx.buffer1_size = BUF_SIZE_2KiB - 1;
  
@@ -141,7 +142,7 @@ static void ndesc_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
  {
  	int i;
  	for (i = 0; i < ring_size; i++) {
-		p->des01.tx.own = 0;
+		p->des01.all_flags = 0;
  		ndesc_tx_set_on_ring_chain(p, (i == (ring_size - 1)));
  		p++;
  	}
@@ -164,6 +165,7 @@ static void ndesc_set_tx_owner(struct dma_desc *p)
  
  static void ndesc_set_rx_owner(struct dma_desc *p)
  {
+	p->des01.all_flags = 0;
  	p->des01.rx.own = 1;
  }
  
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 9bdfaba..88c8645 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -424,19 +424,17 @@ static void init_dma_desc_rings(struct net_device *dev)
  	priv->rx_skbuff =
  	    kmalloc(sizeof(struct sk_buff *) * rxsize, GFP_KERNEL);
  	priv->dma_rx =
-	    (struct dma_desc *)dma_alloc_coherent(priv->device,
-						  rxsize *
-						  sizeof(struct dma_desc),
-						  &priv->dma_rx_phy,
-						  GFP_KERNEL);
+	    (struct dma_desc *)dma_zalloc_coherent(priv->device, rxsize *
+						   sizeof(struct dma_desc),
+						   &priv->dma_rx_phy,
+						   GFP_KERNEL);
  	priv->tx_skbuff = kmalloc(sizeof(struct sk_buff *) * txsize,
  				       GFP_KERNEL);
  	priv->dma_tx =
-	    (struct dma_desc *)dma_alloc_coherent(priv->device,
-						  txsize *
-						  sizeof(struct dma_desc),
-						  &priv->dma_tx_phy,
-						  GFP_KERNEL);
+	    (struct dma_desc *)dma_zalloc_coherent(priv->device, txsize *
+						   sizeof(struct dma_desc),
+						   &priv->dma_tx_phy,
+						   GFP_KERNEL);
  
  	if ((priv->dma_rx == NULL) || (priv->dma_tx == NULL)) {
  		pr_err("%s:ERROR allocating the DMA Tx/Rx desc\n", __func__);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index ef26056..7e7bd15 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -235,7 +235,7 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
  {
  	struct ath_hw *ah = sc->sc_ah;
  	struct ath_common *common = ath9k_hw_common(ah);
-	bool ret;
+	bool ret = true;
  
  	ieee80211_stop_queues(sc->hw);
  
@@ -245,10 +245,13 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
  	ath9k_debug_samp_bb_mac(sc);
  	ath9k_hw_disable_interrupts(ah);
  
-	ret = ath_drain_all_txq(sc, retry_tx);
-
-	if (!ath_stoprecv(sc))
-		ret = false;
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		ret &= ath_stoprecv(sc);
+		ret &= ath_drain_all_txq(sc, retry_tx);
+	} else {
+		ret &= ath_drain_all_txq(sc, retry_tx);
+		ret &= ath_stoprecv(sc);
+	}
  
  	if (!flush) {
  		if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index d66e298..414ac49 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -407,9 +407,9 @@ struct ndis_80211_pmkid {
  #define CAP_MODE_80211G		4
  #define CAP_MODE_MASK		7
  
-#define WORK_LINK_UP		(1<<0)
-#define WORK_LINK_DOWN		(1<<1)
-#define WORK_SET_MULTICAST_LIST	(1<<2)
+#define WORK_LINK_UP		0
+#define WORK_LINK_DOWN		1
+#define WORK_SET_MULTICAST_LIST	2
  
  #define RNDIS_WLAN_ALG_NONE	0
  #define RNDIS_WLAN_ALG_WEP	(1<<0)
diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
index 615a45a..582688fe 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;
  }
  
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index e6c08ee..3d67591 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -216,7 +216,6 @@ static struct dmi_system_id __devinitdata dell_quirks[] = {
  };
  
  static struct calling_interface_buffer *buffer;
-static struct page *bufferpage;
  static DEFINE_MUTEX(buffer_mutex);
  
  static int hwswitch_state;
@@ -714,11 +713,10 @@ static int __init dell_init(void)
  	 * Allocate buffer below 4GB for SMI data--only 32-bit physical addr
  	 * is passed to SMI handler.
  	 */
-	bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32);
+	buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32);
  
-	if (!bufferpage)
+	if (!buffer)
  		goto fail_buffer;
-	buffer = page_address(bufferpage);
  
  	ret = dell_setup_rfkill();
  
@@ -787,7 +785,7 @@ fail_backlight:
  fail_filter:
  	dell_cleanup_rfkill();
  fail_rfkill:
-	free_page((unsigned long)bufferpage);
+	free_page((unsigned long)buffer);
  fail_buffer:
  	platform_device_del(platform_device);
  fail_platform_device2:
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index ac902f7..34e9fcf 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -407,7 +407,8 @@ const struct ideapad_rfk_data ideapad_rfk_data[] = {
  
  static int ideapad_rfk_set(void *data, bool blocked)
  {
-	unsigned long opcode = (unsigned long)data;
+	unsigned long dev = (unsigned long)data;
+	int opcode = ideapad_rfk_data[dev].opcode;
  
  	return write_ec_cmd(ideapad_handle, opcode, !blocked);
  }
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 0d71557..c8f160d 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -749,7 +749,7 @@ 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;
  
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 153b8bd..19ff8b2 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -251,7 +251,7 @@
  #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
diff --git a/drivers/staging/rtl8712/rtl8712_recv.c b/drivers/staging/rtl8712/rtl8712_recv.c
index 887a807..549b8ab 100644
--- a/drivers/staging/rtl8712/rtl8712_recv.c
+++ b/drivers/staging/rtl8712/rtl8712_recv.c
@@ -1074,7 +1074,8 @@ static int recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
  		/* for first fragment packet, driver need allocate 1536 +
  		 * drvinfo_sz + RXDESC_SIZE to defrag packet. */
  		if ((mf == 1) && (frag == 0))
-			alloc_sz = 1658;/*1658+6=1664, 1664 is 128 alignment.*/
+			/*1658+6=1664, 1664 is 128 alignment.*/
+			alloc_sz = max_t(u16, tmp_len, 1658);
  		else
  			alloc_sz = tmp_len;
  		/* 2 is for IP header 4 bytes alignment in QoS packet case.
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index ff58d28..85c28e3 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -229,8 +229,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
  	if (rs485conf->flags & SER_RS485_ENABLED) {
  		dev_dbg(port->dev, "Setting UART to RS485\n");
  		atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
-		if ((rs485conf->delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
+		UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
  		mode |= ATMEL_US_USMODE_RS485;
  	} else {
  		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -305,9 +304,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
  
  	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
  		dev_dbg(port->dev, "Setting UART to RS485\n");
-		if ((atmel_port->rs485.delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port,
-					atmel_port->rs485.delay_rts_after_send);
+		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send);
  		mode |= ATMEL_US_USMODE_RS485;
  	} else {
  		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -1239,9 +1236,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
  
  	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
  		dev_dbg(port->dev, "Setting UART to RS485\n");
-		if ((atmel_port->rs485.delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port,
-					atmel_port->rs485.delay_rts_after_send);
+		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send);
  		mode |= ATMEL_US_USMODE_RS485;
  	} else {
  		dev_dbg(port->dev, "Setting UART to RS232\n");
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 93f2538..62ea924 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2176,9 +2176,6 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
  #define HUB_LONG_RESET_TIME	200
  #define HUB_RESET_TIMEOUT	800
  
-static int hub_port_reset(struct usb_hub *hub, int port1,
-			struct usb_device *udev, unsigned int delay, bool warm);
-
  /* Is a USB 3.0 port in the Inactive or Complinance Mode state?
   * Port worm reset is required to recover
   */
@@ -2258,44 +2255,6 @@ delay:
  	return -EBUSY;
  }
  
-static void hub_port_finish_reset(struct usb_hub *hub, int port1,
-			struct usb_device *udev, int *status)
-{
-	switch (*status) {
-	case 0:
-		/* TRSTRCY = 10 ms; plus some extra */
-		msleep(10 + 40);
-		if (udev) {
-			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
-
-			update_devnum(udev, 0);
-			/* The xHC may think the device is already reset,
-			 * so ignore the status.
-			 */
-			if (hcd->driver->reset_device)
-				hcd->driver->reset_device(hcd, udev);
-		}
-		/* FALL THROUGH */
-	case -ENOTCONN:
-	case -ENODEV:
-		clear_port_feature(hub->hdev,
-				port1, USB_PORT_FEAT_C_RESET);
-		if (hub_is_superspeed(hub->hdev)) {
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_BH_PORT_RESET);
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_PORT_LINK_STATE);
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_CONNECTION);
-		}
-		if (udev)
-			usb_set_device_state(udev, *status
-					? USB_STATE_NOTATTACHED
-					: USB_STATE_DEFAULT);
-		break;
-	}
-}
-
  /* Handle port reset and port warm(BH) reset (for USB3 protocol ports) */
  static int hub_port_reset(struct usb_hub *hub, int port1,
  			struct usb_device *udev, unsigned int delay, bool warm)
@@ -2318,13 +2277,9 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
  		 * If the caller hasn't explicitly requested a warm reset,
  		 * double check and see if one is needed.
  		 */
-		status = hub_port_status(hub, port1,
-					&portstatus, &portchange);
-		if (status < 0)
-			goto done;
-
-		if (hub_port_warm_reset_required(hub, portstatus))
-			warm = true;
+		if (hub_port_status(hub, port1, &portstatus, &portchange) == 0)
+			if (hub_port_warm_reset_required(hub, portstatus))
+				warm = true;
  	}
  
  	/* Reset the port */
@@ -2347,11 +2302,19 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
  
  		/* Check for disconnect or reset */
  		if (status == 0 || status == -ENOTCONN || status == -ENODEV) {
-			hub_port_finish_reset(hub, port1, udev, &status);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_RESET);
  
  			if (!hub_is_superspeed(hub->hdev))
  				goto done;
  
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_BH_PORT_RESET);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_PORT_LINK_STATE);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_CONNECTION);
+
  			/*
  			 * If a USB 3.0 device migrates from reset to an error
  			 * state, re-issue the warm reset.
@@ -2385,6 +2348,26 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
  		port1);
  
  done:
+	if (status == 0) {
+		/* TRSTRCY = 10 ms; plus some extra */
+		msleep(10 + 40);
+		if (udev) {
+			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+			update_devnum(udev, 0);
+			/* The xHC may think the device is already reset,
+			 * so ignore the status.
+			 */
+			if (hcd->driver->reset_device)
+				hcd->driver->reset_device(hcd, udev);
+
+			usb_set_device_state(udev, USB_STATE_DEFAULT);
+		}
+	} else {
+		if (udev)
+			usb_set_device_state(udev, USB_STATE_NOTATTACHED);
+	}
+
  	if (!hub_is_superspeed(hub->hdev))
  		up_read(&ehci_cf_port_reset_rwsem);
  
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 8a7a8ee..a8714fd 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -644,6 +644,10 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
  		dev_vdbg(dwc->dev, "Status Phase\n");
  		dwc3_ep0_complete_req(dwc, event);
  		break;
+	case USB_REQ_SET_INTERFACE:
+		dev_vdbg(dwc->dev, "USB_REQ_SET_INTERFACE\n");
+		dwc->start_config_issued = false;
+		/* Fall through */
  	default:
  		WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state);
  	}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b7f8926..b43c6f9 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -301,6 +301,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
  		if (!(reg & DWC3_DEPCMD_CMDACT)) {
  			dev_vdbg(dwc->dev, "Command Complete --> %d\n",
  					DWC3_DEPCMD_STATUS(reg));
+			if (DWC3_DEPCMD_STATUS(reg))
+				return -EINVAL;
  			return 0;
  		}
  
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index 8285d65..c080be5 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -152,6 +152,13 @@ static int omap_wdt_open(struct inode *inode, struct file *file)
  
  	pm_runtime_get_sync(wdev->dev);
  
+	/*
+	 * Make sure the watchdog is disabled. This is unfortunately required
+	 * because writing to various registers with the watchdog running has no
+	 * effect.
+	 */
+	omap_wdt_disable(wdev);
+
  	/* initialize prescaler */
  	while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01)
  		cpu_relax();
diff --git a/fs/dcache.c b/fs/dcache.c
index d071ea7..03eb2c2 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2518,6 +2518,8 @@ static int prepend_path(const struct path *path,
  	struct dentry *dentry = path->dentry;
  	struct vfsmount *vfsmnt = path->mnt;
  	struct mount *mnt = real_mount(vfsmnt);
+	char *orig_buffer = *buffer;
+	int orig_len = *buflen;
  	bool slash = false;
  	int error = 0;
  
@@ -2525,6 +2527,14 @@ static int prepend_path(const struct path *path,
  		struct dentry * parent;
  
  		if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
+			/* Escaped? */
+			if (dentry != vfsmnt->mnt_root) {
+				*buffer = orig_buffer;
+				*buflen = orig_len;
+				slash = false;
+				error = 3;
+				goto global_root;
+			}
  			/* Global root? */
  			if (!mnt_has_parent(mnt))
  				goto global_root;
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 6dc6153..f819837 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -705,7 +705,7 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
  				       EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
  		EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
  				 "non-extent mapped inodes with bigalloc");
-		return -ENOSPC;
+		return -EUCLEAN;
  	}
  
  	goal = ext4_find_goal(inode, map->m_lblk, partial);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9e9db42..facf1cf 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1848,18 +1848,32 @@ static int __ext4_journalled_writepage(struct page *page,
  	page_bufs = page_buffers(page);
  	BUG_ON(!page_bufs);
  	walk_page_buffers(handle, page_bufs, 0, len, NULL, bget_one);
-	/* As soon as we unlock the page, it can go away, but we have
-	 * references to buffers so we are safe */
+	/*
+	 * We need to release the page lock before we start the
+	 * journal, so grab a reference so the page won't disappear
+	 * out from under us.
+	 */
+	get_page(page);
  	unlock_page(page);
  
  	handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
  	if (IS_ERR(handle)) {
  		ret = PTR_ERR(handle);
-		goto out;
+		put_page(page);
+		goto out_no_pagelock;
  	}
  
  	BUG_ON(!ext4_handle_valid(handle));
  
+	lock_page(page);
+	put_page(page);
+	if (page->mapping != mapping) {
+		/* The page got truncated from under us */
+		ext4_journal_stop(handle);
+		ret = 0;
+		goto out;
+	}
+
  	ret = walk_page_buffers(handle, page_bufs, 0, len, NULL,
  				do_journal_get_write_access);
  
@@ -1875,6 +1889,8 @@ static int __ext4_journalled_writepage(struct page *page,
  	walk_page_buffers(handle, page_bufs, 0, len, NULL, bput_one);
  	ext4_set_inode_state(inode, EXT4_STATE_JDATA);
  out:
+	unlock_page(page);
+out_no_pagelock:
  	return ret;
  }
  
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 92ea560..2e26a54 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -888,6 +888,7 @@ static void ext4_put_super(struct super_block *sb)
  		dump_orphan_list(sb, sbi);
  	J_ASSERT(list_empty(&sbi->s_orphan));
  
+	sync_blockdev(sb->s_bdev);
  	invalidate_bdev(sb->s_bdev);
  	if (sbi->journal_bdev && sbi->journal_bdev != sb->s_bdev) {
  		/*
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index a5c8b34..d8bc0a8 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -981,6 +981,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
  		goto err_fput;
  
  	fuse_conn_init(fc);
+	fc->release = fuse_free_conn;
  
  	fc->dev = sb->s_dev;
  	fc->sb = sb;
@@ -995,7 +996,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
  		fc->dont_mask = 1;
  	sb->s_flags |= MS_POSIXACL;
  
-	fc->release = fuse_free_conn;
  	fc->flags = d.flags;
  	fc->user_id = d.user_id;
  	fc->group_id = d.group_id;
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index c78841e..4fd7856 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -440,7 +440,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
  	unsigned long	blocknr;
  
  	if (is_journal_aborted(journal))
-		return 1;
+		return -EIO;
  
  	if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr))
  		return 1;
@@ -455,10 +455,9 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
  	 * jbd2_cleanup_journal_tail() doesn't get called all that often.
  	 */
  	if (journal->j_flags & JBD2_BARRIER)
-		blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+		blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
  
-	__jbd2_update_log_tail(journal, first_tid, blocknr);
-	return 0;
+	return __jbd2_update_log_tail(journal, first_tid, blocknr);
  }
  
  
@@ -468,14 +467,14 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
   * journal_clean_one_cp_list
   *
   * Find all the written-back checkpoint buffers in the given list and
- * release them.
+ * release them. If 'destroy' is set, clean all buffers unconditionally.
   *
   * Called with the journal locked.
   * Called with j_list_lock held.
   * Returns number of buffers reaped (for debug)
   */
  
-static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
+static int journal_clean_one_cp_list(struct journal_head *jh, int *released, bool destroy)
  {
  	struct journal_head *last_jh;
  	struct journal_head *next_jh = jh;
@@ -489,7 +488,10 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
  	do {
  		jh = next_jh;
  		next_jh = jh->b_cpnext;
-		ret = __try_to_free_cp_buf(jh);
+		if (!destroy)
+			ret = __try_to_free_cp_buf(jh);
+		else
+			ret = __jbd2_journal_remove_checkpoint(jh) + 1;
  		if (ret) {
  			freed++;
  			if (ret == 2) {
@@ -515,12 +517,14 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
   *
   * Find all the written-back checkpoint buffers in the journal and release them.
   *
+ * If 'destroy' is set, release all buffers unconditionally.
+ *
   * Called with the journal locked.
   * Called with j_list_lock held.
   * Returns number of buffers reaped (for debug)
   */
  
-int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
  {
  	transaction_t *transaction, *last_transaction, *next_transaction;
  	int ret = 0;
@@ -536,7 +540,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
  		transaction = next_transaction;
  		next_transaction = transaction->t_cpnext;
  		ret += journal_clean_one_cp_list(transaction->
-				t_checkpoint_list, &released);
+				t_checkpoint_list, &released, destroy);
  		/*
  		 * This function only frees up some memory if possible so we
  		 * dont have an obligation to finish processing. Bail out if
@@ -552,7 +556,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
  		 * we can possibly see not yet submitted buffers on io_list
  		 */
  		ret += journal_clean_one_cp_list(transaction->
-				t_checkpoint_io_list, &released);
+				t_checkpoint_io_list, &released, destroy);
  		if (need_resched())
  			goto out;
  	} while (transaction != last_transaction);
@@ -561,6 +565,28 @@ out:
  }
  
  /*
+ * Remove buffers from all checkpoint lists as journal is aborted and we just
+ * need to free memory
+ */
+void jbd2_journal_destroy_checkpoint(journal_t *journal)
+{
+	/*
+	 * We loop because __jbd2_journal_clean_checkpoint_list() may abort
+	 * early due to a need of rescheduling.
+	 */
+	while (1) {
+		spin_lock(&journal->j_list_lock);
+		if (!journal->j_checkpoint_transactions) {
+			spin_unlock(&journal->j_list_lock);
+			break;
+		}
+		__jbd2_journal_clean_checkpoint_list(journal, true);
+		spin_unlock(&journal->j_list_lock);
+		cond_resched();
+	}
+}
+
+/*
   * journal_remove_checkpoint: called after a buffer has been committed
   * to disk (either by being write-back flushed to disk, or being
   * committed to the log).
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index a0dcbd62..259f28d 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -438,7 +438,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
  	 * frees some memory
  	 */
  	spin_lock(&journal->j_list_lock);
-	__jbd2_journal_clean_checkpoint_list(journal);
+	__jbd2_journal_clean_checkpoint_list(journal, false);
  	spin_unlock(&journal->j_list_lock);
  
  	jbd_debug(3, "JBD2: commit phase 1\n");
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f697468..a327944 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -823,9 +823,10 @@ int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
   *
   * Requires j_checkpoint_mutex
   */
-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
  {
  	unsigned long freed;
+	int ret;
  
  	BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
  
@@ -835,7 +836,10 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
  	 * space and if we lose sb update during power failure we'd replay
  	 * old transaction with possibly newly overwritten data.
  	 */
-	jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+	ret = jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+	if (ret)
+		goto out;
+
  	write_lock(&journal->j_state_lock);
  	freed = block - journal->j_tail;
  	if (block < journal->j_tail)
@@ -851,6 +855,9 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
  	journal->j_tail_sequence = tid;
  	journal->j_tail = block;
  	write_unlock(&journal->j_state_lock);
+
+out:
+	return ret;
  }
  
  /*
@@ -1264,7 +1271,7 @@ static int journal_reset(journal_t *journal)
  	return jbd2_journal_start_thread(journal);
  }
  
-static void jbd2_write_superblock(journal_t *journal, int write_op)
+static int jbd2_write_superblock(journal_t *journal, int write_op)
  {
  	struct buffer_head *bh = journal->j_sb_buffer;
  	int ret;
@@ -1301,7 +1308,10 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
  		printk(KERN_ERR "JBD2: Error %d detected when updating "
  		       "journal superblock for %s.\n", ret,
  		       journal->j_devname);
+		jbd2_journal_abort(journal, ret);
  	}
+
+	return ret;
  }
  
  /**
@@ -1314,10 +1324,11 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
   * Update a journal's superblock information about log tail and write it to
   * disk, waiting for the IO to complete.
   */
-void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
  				     unsigned long tail_block, int write_op)
  {
  	journal_superblock_t *sb = journal->j_superblock;
+	int ret;
  
  	BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
  	jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
@@ -1326,13 +1337,18 @@ void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
  	sb->s_sequence = cpu_to_be32(tail_tid);
  	sb->s_start    = cpu_to_be32(tail_block);
  
-	jbd2_write_superblock(journal, write_op);
+	ret = jbd2_write_superblock(journal, write_op);
+	if (ret)
+		goto out;
  
  	/* Log is no longer empty */
  	write_lock(&journal->j_state_lock);
  	WARN_ON(!sb->s_sequence);
  	journal->j_flags &= ~JBD2_FLUSHED;
  	write_unlock(&journal->j_state_lock);
+
+out:
+	return ret;
  }
  
  /**
@@ -1575,8 +1591,17 @@ int jbd2_journal_destroy(journal_t *journal)
  	while (journal->j_checkpoint_transactions != NULL) {
  		spin_unlock(&journal->j_list_lock);
  		mutex_lock(&journal->j_checkpoint_mutex);
-		jbd2_log_do_checkpoint(journal);
+		err = jbd2_log_do_checkpoint(journal);
  		mutex_unlock(&journal->j_checkpoint_mutex);
+		/*
+		 * If checkpointing failed, just free the buffers to avoid
+		 * looping forever
+		 */
+		if (err) {
+			jbd2_journal_destroy_checkpoint(journal);
+			spin_lock(&journal->j_list_lock);
+			break;
+		}
  		spin_lock(&journal->j_list_lock);
  	}
  
@@ -1785,7 +1810,14 @@ int jbd2_journal_flush(journal_t *journal)
  		return -EIO;
  
  	mutex_lock(&journal->j_checkpoint_mutex);
-	jbd2_cleanup_journal_tail(journal);
+	if (!err) {
+		err = jbd2_cleanup_journal_tail(journal);
+		if (err < 0) {
+			mutex_unlock(&journal->j_checkpoint_mutex);
+			goto out;
+		}
+		err = 0;
+	}
  
  	/* Finally, mark the journal as really needing no recovery.
  	 * This sets s_start==0 in the underlying superblock, which is
@@ -1801,7 +1833,8 @@ int jbd2_journal_flush(journal_t *journal)
  	J_ASSERT(journal->j_head == journal->j_tail);
  	J_ASSERT(journal->j_tail_sequence == journal->j_transaction_sequence);
  	write_unlock(&journal->j_state_lock);
-	return 0;
+out:
+	return err;
  }
  
  /**
diff --git a/fs/namei.c b/fs/namei.c
index 9c4b9b8..4fc034f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -397,6 +397,24 @@ void path_put(struct path *path)
  }
  EXPORT_SYMBOL(path_put);
  
+/**
+ * path_connected - Verify that a path->dentry is below path->mnt.mnt_root
+ * @path: nameidate to verify
+ *
+ * Rename can sometimes move a file or directory outside of a bind
+ * mount, path_connected allows those cases to be detected.
+ */
+static bool path_connected(const struct path *path)
+{
+	struct vfsmount *mnt = path->mnt;
+
+	/* Only bind mounts can have disconnected paths */
+	if (mnt->mnt_root == mnt->mnt_sb->s_root)
+		return true;
+
+	return is_subdir(path->dentry, mnt->mnt_root);
+}
+
  /*
   * Path walking has 2 modes, rcu-walk and ref-walk (see
   * Documentation/filesystems/path-lookup.txt).  In situations when we can't
@@ -945,6 +963,8 @@ static int follow_dotdot_rcu(struct nameidata *nd)
  				goto failed;
  			nd->path.dentry = parent;
  			nd->seq = seq;
+			if (unlikely(!path_connected(&nd->path)))
+				goto failed;
  			break;
  		}
  		if (!follow_up_rcu(&nd->path))
@@ -1029,7 +1049,7 @@ static void follow_mount(struct path *path)
  	}
  }
  
-static void follow_dotdot(struct nameidata *nd)
+static int follow_dotdot(struct nameidata *nd)
  {
  	if (!nd->root.mnt)
  		set_root(nd);
@@ -1045,6 +1065,10 @@ static void follow_dotdot(struct nameidata *nd)
  			/* rare case of legitimate dget_parent()... */
  			nd->path.dentry = dget_parent(nd->path.dentry);
  			dput(old);
+			if (unlikely(!path_connected(&nd->path))) {
+				path_put(&nd->path);
+				return -ENOENT;
+			}
  			break;
  		}
  		if (!follow_up(&nd->path))
@@ -1052,6 +1076,7 @@ static void follow_dotdot(struct nameidata *nd)
  	}
  	follow_mount(&nd->path);
  	nd->inode = nd->path.dentry->d_inode;
+	return 0;
  }
  
  /*
@@ -1252,7 +1277,7 @@ static inline int handle_dots(struct nameidata *nd, int type)
  			if (follow_dotdot_rcu(nd))
  				return -ECHILD;
  		} else
-			follow_dotdot(nd);
+			return follow_dotdot(nd);
  	}
  	return 0;
  }
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index a77cc9a..e60bbe2 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -1333,7 +1333,7 @@ static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
  	if (args->npages != 0)
  		xdr_write_pages(xdr, args->pages, 0, args->len);
  	else
-		xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
+		xdr_reserve_space(xdr, args->len);
  
  	error = nfsacl_encode(xdr->buf, base, args->inode,
  			    (args->mask & NFS_ACL) ?
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index c4600b5..1639a4c 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1279,6 +1279,8 @@ restart:
  				}
  				spin_unlock(&state->state_lock);
  				nfs4_put_open_state(state);
+				clear_bit(NFS4CLNT_RECLAIM_NOGRACE,
+					&state->flags);
  				goto restart;
  			}
  		}
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 6d52429..0460073 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -495,6 +495,7 @@ typedef u64 acpi_integer;
  #define ACPI_NO_ACPI_ENABLE             0x10
  #define ACPI_NO_DEVICE_INIT             0x20
  #define ACPI_NO_OBJECT_INIT             0x40
+#define ACPI_NO_FACS_INIT               0x80
  
  /*
   * Initialization state
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 2ffbf99..2179d78 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -974,15 +974,16 @@ extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
  int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
  int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
  			      unsigned long *block);
-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
  void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
  
  /* Commit management */
  extern void jbd2_journal_commit_transaction(journal_t *);
  
  /* Checkpoint list management */
-int __jbd2_journal_clean_checkpoint_list(journal_t *journal);
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy);
  int __jbd2_journal_remove_checkpoint(struct journal_head *);
+void jbd2_journal_destroy_checkpoint(journal_t *journal);
  void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *);
  
  
@@ -1093,7 +1094,7 @@ extern int	   jbd2_journal_recover    (journal_t *journal);
  extern int	   jbd2_journal_wipe       (journal_t *, int);
  extern int	   jbd2_journal_skip_recovery	(journal_t *);
  extern void	   jbd2_journal_update_sb_errno(journal_t *);
-extern void	   jbd2_journal_update_sb_log_tail	(journal_t *, tid_t,
+extern int	   jbd2_journal_update_sb_log_tail	(journal_t *, tid_t,
  				unsigned long, int);
  extern void	   __jbd2_journal_abort_hard	(journal_t *);
  extern void	   jbd2_journal_abort      (journal_t *, int);
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 7ba3551..845b402 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1061,7 +1061,7 @@ struct nfstime4 {
  };
  
  #ifdef CONFIG_NFS_V4_1
-#define NFS4_EXCHANGE_ID_LEN	(48)
+#define NFS4_EXCHANGE_ID_LEN	(127)
  struct nfs41_exchange_id_args {
  	struct nfs_client		*client;
  	nfs4_verifier			*verifier;
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 88949a9..4ea0ec6 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -209,6 +209,7 @@ extern struct sctp_globals {
  	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 */
@@ -355,6 +356,10 @@ 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/kernel/hrtimer.c b/kernel/hrtimer.c
index 434f2b6..34031a0 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -853,6 +853,9 @@ u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
  	if (delta.tv64 < 0)
  		return 0;
  
+	if (WARN_ON(timer->state & HRTIMER_STATE_ENQUEUED))
+		return 0;
+
  	if (interval.tv64 < timer->base->resolution.tv64)
  		interval.tv64 = timer->base->resolution.tv64;
  
@@ -1265,11 +1268,14 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now)
  	 * Note: We clear the CALLBACK bit after enqueue_hrtimer and
  	 * we do not reprogramm the event hardware. Happens either in
  	 * hrtimer_start_range_ns() or in hrtimer_interrupt()
+	 *
+	 * Note: Because we dropped the cpu_base->lock above,
+	 * hrtimer_start_range_ns() can have popped in and enqueued the timer
+	 * for us already.
  	 */
-	if (restart != HRTIMER_NORESTART) {
-		BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
+	if (restart != HRTIMER_NORESTART &&
+	    !(timer->state & HRTIMER_STATE_ENQUEUED))
  		enqueue_hrtimer(timer, base);
-	}
  
  	WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK));
  
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 37a5444..60a56f4 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -279,6 +279,11 @@ 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;
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 3b04aec..096d774 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1044,6 +1044,9 @@ static void parse_init(struct filter_parse_state *ps,
  
  static char infix_next(struct filter_parse_state *ps)
  {
+	if (!ps->infix.cnt)
+		return 0;
+
  	ps->infix.cnt--;
  
  	return ps->infix.string[ps->infix.tail++];
@@ -1059,6 +1062,9 @@ static char infix_peek(struct filter_parse_state *ps)
  
  static void infix_advance(struct filter_parse_state *ps)
  {
+	if (!ps->infix.cnt)
+		return;
+
  	ps->infix.cnt--;
  	ps->infix.tail++;
  }
@@ -1372,7 +1378,9 @@ static int check_preds(struct filter_parse_state *ps)
  		}
  		cnt--;
  		n_normal_preds++;
-		WARN_ON_ONCE(cnt < 0);
+		/* all ops should have operands */
+		if (cnt < 0)
+			break;
  	}
  
  	if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 6ccf212..f62496a 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -603,12 +603,12 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
  	unsigned a, b;
  	int c, old_c, totaldigits;
  	const char __user __force *ubuf = (const char __user __force *)buf;
-	int exp_digit, in_range;
+	int at_start, in_range;
  
  	totaldigits = c = 0;
  	bitmap_zero(maskp, nmaskbits);
  	do {
-		exp_digit = 1;
+		at_start = 1;
  		in_range = 0;
  		a = b = 0;
  
@@ -637,11 +637,10 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
  				break;
  
  			if (c == '-') {
-				if (exp_digit || in_range)
+				if (at_start || in_range)
  					return -EINVAL;
  				b = 0;
  				in_range = 1;
-				exp_digit = 1;
  				continue;
  			}
  
@@ -651,16 +650,18 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
  			b = b * 10 + (c - '0');
  			if (!in_range)
  				a = b;
-			exp_digit = 0;
+			at_start = 0;
  			totaldigits++;
  		}
  		if (!(a <= b))
  			return -EINVAL;
  		if (b >= nmaskbits)
  			return -ERANGE;
-		while (a <= b) {
-			set_bit(a, maskp);
-			a++;
+		if (!at_start) {
+			while (a <= b) {
+				set_bit(a, maskp);
+				a++;
+			}
  		}
  	} while (buflen && c == ',');
  	return 0;
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index ad6ee88..c74827c 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -193,6 +193,8 @@ static struct kmem_cache *scan_area_cache;
  
  /* set if tracing memory operations is enabled */
  static atomic_t kmemleak_enabled = ATOMIC_INIT(0);
+/* same as above but only for the kmemleak_free() callback */
+static int kmemleak_free_enabled;
  /* set in the late_initcall if there were no errors */
  static atomic_t kmemleak_initialized = ATOMIC_INIT(0);
  /* enables or disables early logging of the memory operations */
@@ -936,7 +938,7 @@ void __ref kmemleak_free(const void *ptr)
  {
  	pr_debug("%s(0x%p)\n", __func__, ptr);
  
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
  		delete_object_full((unsigned long)ptr);
  	else if (atomic_read(&kmemleak_early_log))
  		log_early(KMEMLEAK_FREE, ptr, 0, 0);
@@ -976,7 +978,7 @@ void __ref kmemleak_free_percpu(const void __percpu *ptr)
  
  	pr_debug("%s(0x%p)\n", __func__, ptr);
  
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
  		for_each_possible_cpu(cpu)
  			delete_object_full((unsigned long)per_cpu_ptr(ptr,
  								      cpu));
@@ -1690,6 +1692,13 @@ static void kmemleak_do_cleanup(struct work_struct *work)
  	mutex_lock(&scan_mutex);
  	stop_scan_thread();
  
+	/*
+	 * Once the scan thread has stopped, it is safe to no longer track
+	 * object freeing. Ordering of the scan thread stopping and the memory
+	 * accesses below is guaranteed by the kthread_stop() function.
+	  */
+	kmemleak_free_enabled = 0;
+
  	if (cleanup) {
  		rcu_read_lock();
  		list_for_each_entry_rcu(object, &object_list, object_list)
@@ -1717,6 +1726,8 @@ static void kmemleak_disable(void)
  	/* check whether it is too early for a kernel thread */
  	if (atomic_read(&kmemleak_initialized))
  		schedule_work(&cleanup_work);
+	else
+		kmemleak_free_enabled = 0;
  
  	pr_info("Kernel memory leak detector disabled\n");
  }
@@ -1782,8 +1793,10 @@ void __init kmemleak_init(void)
  	if (atomic_read(&kmemleak_error)) {
  		local_irq_restore(flags);
  		return;
-	} else
+	} else {
  		atomic_set(&kmemleak_enabled, 1);
+		kmemleak_free_enabled = 1;
+	}
  	local_irq_restore(flags);
  
  	/*
diff --git a/net/9p/client.c b/net/9p/client.c
index b23a17c..32df0a3 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -833,7 +833,8 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
  	if (err < 0) {
  		if (err == -EIO)
  			c->status = Disconnected;
-		goto reterr;
+		if (err != -ERESTARTSYS)
+			goto reterr;
  	}
  	if (req->status == REQ_STATUS_ERROR) {
  		p9_debug(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
index 7222fe1..ea0e15c 100644
--- a/net/bridge/br_ioctl.c
+++ b/net/bridge/br_ioctl.c
@@ -246,9 +246,7 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
  		if (!capable(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_multicast.c b/net/bridge/br_multicast.c
index a41051a..87ae8c3 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -36,6 +36,9 @@
  #define mlock_dereference(X, br) \
  	rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
  
+static void br_multicast_add_router(struct net_bridge *br,
+				    struct net_bridge_port *port);
+
  #if IS_ENABLED(CONFIG_IPV6)
  static inline int ipv6_is_transient_multicast(const struct in6_addr *addr)
  {
@@ -842,6 +845,8 @@ void br_multicast_enable_port(struct net_bridge_port *port)
  		goto out;
  
  	__br_multicast_enable_port(port);
+	if (port->multicast_router == 2 && hlist_unhashed(&port->rlist))
+		br_multicast_add_router(br, port);
  
  out:
  	spin_unlock(&br->multicast_lock);
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 2f100cc..23ea159 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -242,12 +242,13 @@ 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) {
@@ -265,6 +266,7 @@ 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 */
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 7fbe210..d4fbcb6 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -102,7 +102,7 @@ static int crush_decode_tree_bucket(void **p, void *end,
  {
  	int j;
  	dout("crush_decode_tree_bucket %p to %p\n", *p, end);
-	ceph_decode_32_safe(p, end, b->num_nodes, bad);
+	ceph_decode_8_safe(p, end, b->num_nodes, bad);
  	b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS);
  	if (b->node_weights == NULL)
  		return -ENOMEM;
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 546b133..ffa5d5d 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -568,7 +568,7 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
  			   "     dst_min: %s  dst_max: %s\n",
  			   pkt_dev->dst_min, pkt_dev->dst_max);
  		seq_printf(seq,
-			   "        src_min: %s  src_max: %s\n",
+			   "     src_min: %s  src_max: %s\n",
  			   pkt_dev->src_min, pkt_dev->src_max);
  	}
  
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index dbe1715..79c75e1 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1169,16 +1169,6 @@ 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 struct sock *fanout_demux_hash(struct packet_fanout *f, struct sk_buff *skb, unsigned int num)
  {
  	u32 idx, hash = skb->rxhash;
@@ -1190,13 +1180,9 @@ static struct sock *fanout_demux_hash(struct packet_fanout *f, struct sk_buff *s
  
  static struct sock *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 f->arr[cur];
+	return f->arr[val % num];
  }
  
  static struct sock *fanout_demux_cpu(struct packet_fanout *f, struct sk_buff *skb, unsigned int num)
@@ -1210,7 +1196,7 @@ 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;
  	struct sock *sk;
  
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 0c0bd2f..bc7b5de 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1539,8 +1539,10 @@ SCTP_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(&sctp_globals.addr_wq_lock);
  	sctp_bh_lock_sock(sk);
  
  	/* Hold the sock, since sk_common_release() will put sock_put()
@@ -1550,7 +1552,7 @@ SCTP_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(&sctp_globals.addr_wq_lock);
  
  	sock_put(sk);
  
@@ -3492,6 +3494,7 @@ 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(&sctp_globals.addr_wq_lock);
  	if (val == 0 && sp->do_auto_asconf) {
  		list_del(&sp->auto_asconf_list);
  		sp->do_auto_asconf = 0;
@@ -3500,6 +3503,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
  		    &sctp_auto_asconf_splist);
  		sp->do_auto_asconf = 1;
  	}
+	spin_unlock_bh(&sctp_globals.addr_wq_lock);
  	return 0;
  }
  
@@ -3935,18 +3939,28 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
  	local_bh_disable();
  	percpu_counter_inc(&sctp_sockets_allocated);
  	sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+
+	/* Nothing can fail after this block, otherwise
+	 * sctp_destroy_sock() will be called without addr_wq_lock held
+	 */
  	if (sctp_default_auto_asconf) {
+		spin_lock(&sctp_globals.addr_wq_lock);
  		list_add_tail(&sp->auto_asconf_list,
  		    &sctp_auto_asconf_splist);
  		sp->do_auto_asconf = 1;
-	} else
+		spin_unlock(&sctp_globals.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
+ * sctp_globals.addr_wq_lock held if sp->do_auto_asconf is true
+ */
  SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
  {
  	struct sctp_sock *sp;
@@ -6746,6 +6760,19 @@ 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.
   */
@@ -6760,7 +6787,6 @@ 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.
@@ -6768,12 +6794,7 @@ 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.
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 31def68..617b955 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -60,7 +60,7 @@ static void xprt_free_allocation(struct rpc_rqst *req)
  
  	dprintk("RPC:        free allocations for req= %p\n", req);
  	BUG_ON(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
-	xbufp = &req->rq_private_buf;
+	xbufp = &req->rq_rcv_buf;
  	free_page((unsigned long)xbufp->head[0].iov_base);
  	xbufp = &req->rq_snd_buf;
  	free_page((unsigned long)xbufp->head[0].iov_base);
diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c
index 4fe9d19..80460d2 100644
--- a/sound/soc/codecs/wm8737.c
+++ b/sound/soc/codecs/wm8737.c
@@ -484,7 +484,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
  
  			/* Fast VMID ramp at 2*2.5k */
  			snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-					    WM8737_VMIDSEL_MASK, 0x4);
+					    WM8737_VMIDSEL_MASK,
+					    2 << WM8737_VMIDSEL_SHIFT);
  
  			/* Bring VMID up */
  			snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
@@ -498,7 +499,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
  
  		/* VMID at 2*300k */
  		snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-				    WM8737_VMIDSEL_MASK, 2);
+				    WM8737_VMIDSEL_MASK,
+				    1 << WM8737_VMIDSEL_SHIFT);
  
  		break;
  
diff --git a/sound/soc/codecs/wm8903.h b/sound/soc/codecs/wm8903.h
index db94931..0bb4a64 100644
--- a/sound/soc/codecs/wm8903.h
+++ b/sound/soc/codecs/wm8903.h
@@ -172,7 +172,7 @@ extern int wm8903_mic_detect(struct snd_soc_codec *codec,
  #define WM8903_VMID_BUF_ENA_WIDTH                    1  /* VMID_BUF_ENA */
  
  #define WM8903_VMID_RES_50K                          2
-#define WM8903_VMID_RES_250K                         3
+#define WM8903_VMID_RES_250K                         4
  #define WM8903_VMID_RES_5K                           6
  
  /*
diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c
index 4696f66..07b78a9 100644
--- a/sound/soc/codecs/wm8955.c
+++ b/sound/soc/codecs/wm8955.c
@@ -298,7 +298,7 @@ static int wm8955_configure_clocking(struct snd_soc_codec *codec)
  		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
  				    WM8955_K_17_9_MASK,
  				    (pll.k >> 9) & WM8955_K_17_9_MASK);
-		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
+		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_3,
  				    WM8955_K_8_0_MASK,
  				    pll.k & WM8955_K_8_0_MASK);
  		if (pll.k)
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index ed986e6..bd3c6ef 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -183,7 +183,7 @@ SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
  SOC_ENUM("ADC Polarity", wm8960_enum[0]),
  SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
  
-SOC_ENUM("DAC Polarity", wm8960_enum[2]),
+SOC_ENUM("DAC Polarity", wm8960_enum[1]),
  SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
  		    wm8960_get_deemph, wm8960_put_deemph),
  

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Guenter Roeck]

On 10/19/2015 05:47 PM, lizf@kernel.org wrote:
> From: Zefan Li <lizefan@huawei.com>
>
> This is the start of the stable review cycle for the 3.4.110 release.
> There are 65 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.
>

Build results:
	total: 97 pass: 96 fail: 1
Failed builds:
	m68k:sun3_defconfig

Qemu test results:
	total: 63 pass: 63 fail: 0

Build failure is due to inconsistent kallsyms data when building m68k:sun3_defconfig.
 From the build log:

Inconsistent kallsyms data
This is a bug - please report about it
Try make KALLSYMS_EXTRA_PASS=1 as a workaround
Makefile:922: recipe for target 'vmlinux' failed

Bisect says that the problem is caused by "vfs: Test for and handle paths
that are unreachable from  their mnt_root", and reverting that patch
fixes the problem. No idea what is going on. Copying Eric and Geert.

Details are available at http://server.roeck-us.net:8010/builders.

Guenter

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Geert Uytterhoeven]

On Tue, Oct 20, 2015 at 4:17 AM, Guenter Roeck <linux@roeck-us.net> wrote:
> On 10/19/2015 05:47 PM, lizf@kernel.org wrote:
>> From: Zefan Li <lizefan@huawei.com>
>>
>> This is the start of the stable review cycle for the 3.4.110 release.
>> There are 65 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.
>>
>
> Build results:
>         total: 97 pass: 96 fail: 1
> Failed builds:
>         m68k:sun3_defconfig
>
> Qemu test results:
>         total: 63 pass: 63 fail: 0
>
> Build failure is due to inconsistent kallsyms data when building
> m68k:sun3_defconfig.
> From the build log:
>
> Inconsistent kallsyms data
> This is a bug - please report about it
> Try make KALLSYMS_EXTRA_PASS=1 as a workaround
> Makefile:922: recipe for target 'vmlinux' failed
>
> Bisect says that the problem is caused by "vfs: Test for and handle paths
> that are unreachable from  their mnt_root", and reverting that patch
> fixes the problem. No idea what is going on. Copying Eric and Geert.

The posted patch is whitespace-damaged. Is there a git tree I can fetch
from?

Thanks!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Zefan Li]

[-- Attachment #1: Type: text/plain, Size: 1415 bytes --]

On 2015/10/20 15:05, Geert Uytterhoeven wrote:
> On Tue, Oct 20, 2015 at 4:17 AM, Guenter Roeck <linux@roeck-us.net> wrote:
>> On 10/19/2015 05:47 PM, lizf@kernel.org wrote:
>>> From: Zefan Li <lizefan@huawei.com>
>>>
>>> This is the start of the stable review cycle for the 3.4.110 release.
>>> There are 65 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.
>>>
>>
>> Build results:
>>          total: 97 pass: 96 fail: 1
>> Failed builds:
>>          m68k:sun3_defconfig
>>
>> Qemu test results:
>>          total: 63 pass: 63 fail: 0
>>
>> Build failure is due to inconsistent kallsyms data when building
>> m68k:sun3_defconfig.
>>  From the build log:
>>
>> Inconsistent kallsyms data
>> This is a bug - please report about it
>> Try make KALLSYMS_EXTRA_PASS=1 as a workaround
>> Makefile:922: recipe for target 'vmlinux' failed
>>
>> Bisect says that the problem is caused by "vfs: Test for and handle paths
>> that are unreachable from  their mnt_root", and reverting that patch
>>  fixes the problem. No idea what is going on. Copying Eric and Geert.
>

This is odd...

> The posted patch is whitespace-damaged. Is there a git tree I can fetch
> from?
>

Oops.

The patch is attached. And you can also fetch thost changes from

	git://git.kernel.org/pub/scm/linux/kernel/git/lizf/linux-3.4.y.git for-review


[-- Attachment #2: patch-3.4.110-rc1 --]
[-- Type: text/plain, Size: 79302 bytes --]

diff --git a/Documentation/networking/pktgen.txt b/Documentation/networking/pktgen.txt
index 75e4fd7..a03239c 100644
--- a/Documentation/networking/pktgen.txt
+++ b/Documentation/networking/pktgen.txt
@@ -24,17 +24,33 @@ For monitoring and control pktgen creates:
         /proc/net/pktgen/ethX
 
 
-Viewing threads
-===============
-/proc/net/pktgen/kpktgend_0 
-Name: kpktgend_0  max_before_softirq: 10000
-Running: 
-Stopped: eth1 
-Result: OK: max_before_softirq=10000
+Kernel threads
+==============
+Pktgen creates a thread for each CPU with affinity to that CPU.
+Which is controlled through procfile /proc/net/pktgen/kpktgend_X.
+
+Example: /proc/net/pktgen/kpktgend_0
+
+ Running:
+ Stopped: eth4@0
+ Result: OK: add_device=eth4@0
+
+Most important are the devices assigned to the thread.
 
-Most important the devices assigned to thread. Note! A device can only belong 
-to one thread.
+The two basic thread commands are:
+ * add_device DEVICE@NAME -- adds a single device
+ * rem_device_all         -- remove all associated devices
 
+When adding a device to a thread, a corrosponding procfile is created
+which is used for configuring this device. Thus, device names need to
+be unique.
+
+To support adding the same device to multiple threads, which is useful
+with multi queue NICs, a the device naming scheme is extended with "@":
+ device@something
+
+The part after "@" can be anything, but it is custom to use the thread
+number.
 
 Viewing devices
 ===============
@@ -42,29 +58,32 @@ Viewing devices
 Parm section holds configured info. Current hold running stats. 
 Result is printed after run or after interruption. Example:
 
-/proc/net/pktgen/eth1       
+/proc/net/pktgen/eth4@0
 
-Params: count 10000000  min_pkt_size: 60  max_pkt_size: 60
-     frags: 0  delay: 0  clone_skb: 1000000  ifname: eth1
+ Params: count 100000  min_pkt_size: 60  max_pkt_size: 60
+     frags: 0  delay: 0  clone_skb: 64  ifname: eth4@0
      flows: 0 flowlen: 0
-     dst_min: 10.10.11.2  dst_max: 
-     src_min:   src_max: 
-     src_mac: 00:00:00:00:00:00  dst_mac: 00:04:23:AC:FD:82
-     udp_src_min: 9  udp_src_max: 9  udp_dst_min: 9  udp_dst_max: 9
-     src_mac_count: 0  dst_mac_count: 0 
-     Flags: 
-Current:
-     pkts-sofar: 10000000  errors: 39664
-     started: 1103053986245187us  stopped: 1103053999346329us idle: 880401us
-     seq_num: 10000011  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
-     cur_saddr: 0x10a0a0a  cur_daddr: 0x20b0a0a
-     cur_udp_dst: 9  cur_udp_src: 9
+     queue_map_min: 0  queue_map_max: 0
+     dst_min: 192.168.81.2  dst_max:
+     src_min:   src_max:
+     src_mac: 90:e2:ba:0a:56:b4 dst_mac: 00:1b:21:3c:9d:f8
+     udp_src_min: 9  udp_src_max: 109  udp_dst_min: 9  udp_dst_max: 9
+     src_mac_count: 0  dst_mac_count: 0
+     Flags: UDPSRC_RND  NO_TIMESTAMP  QUEUE_MAP_CPU
+ Current:
+     pkts-sofar: 100000  errors: 0
+     started: 623913381008us  stopped: 623913396439us idle: 25us
+     seq_num: 100001  cur_dst_mac_offset: 0  cur_src_mac_offset: 0
+     cur_saddr: 192.168.8.3  cur_daddr: 192.168.81.2
+     cur_udp_dst: 9  cur_udp_src: 42
+     cur_queue_map: 
      flows: 0
-Result: OK: 13101142(c12220741+d880401) usec, 10000000 (60byte,0frags)
-  763292pps 390Mb/sec (390805504bps) errors: 39664
+ Result: OK: 15430(c15405d25) usec, 100000 (60byte,0frags)
+  6480562pps 3110Mb/sec (3110669760bps) errors: 0
 
-Configuring threads and devices
-================================
+
+Configuring devices
+===================
 This is done via the /proc interface easiest done via pgset in the scripts
 
 Examples:
@@ -177,6 +196,8 @@ Note when adding devices to a specific CPU there good idea to also assign
 /proc/irq/XX/smp_affinity so the TX-interrupts gets bound to the same CPU.
 as this reduces cache bouncing when freeing skb's.
 
+Plus using the device flag QUEUE_MAP_CPU, which maps the SKBs TX queue
+to the running threads CPU (directly from smp_processor_id()).
 
 Current commands and configuration options
 ==========================================
diff --git a/Makefile b/Makefile
index 7337720..a4b2383 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 3
 PATCHLEVEL = 4
-SUBLEVEL = 109
-EXTRAVERSION =
+SUBLEVEL = 110
+EXTRAVERSION = -rc1
 NAME = Saber-toothed Squirrel
 
 # *DOCUMENTATION*
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index ad94145..77026415 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -899,7 +899,7 @@ void bpf_jit_compile(struct sk_filter *fp)
 		if (ctx.imm_count)
 			kfree(ctx.imms);
 #endif
-		bpf_jit_binary_free(header);
+		module_free(NULL, ctx.target);
 		goto out;
 	}
 	build_epilogue(&ctx);
diff --git a/arch/s390/crypto/ghash_s390.c b/arch/s390/crypto/ghash_s390.c
index c2dac2e..69b5a4b 100644
--- a/arch/s390/crypto/ghash_s390.c
+++ b/arch/s390/crypto/ghash_s390.c
@@ -115,7 +115,7 @@ static int ghash_final(struct shash_desc *desc, u8 *dst)
 	struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
 
 	ghash_flush(dctx);
-	memcpy(dst, dtx->icv, GHASH_BLOCK_SIZE);
+	memcpy(dst, dctx->icv, GHASH_BLOCK_SIZE);
 
 	return 0;
 }
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 4f78757..d60facb 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -509,7 +509,7 @@ 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;
 
 	unsigned int tss_addr;
 	struct page *apic_access_page;
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index db336f9..eaad49a 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -317,7 +317,7 @@ static void pit_do_work(struct work_struct *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 578613d..53454a6 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -761,10 +761,10 @@ 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)
@@ -1257,6 +1257,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu)
 
 	apic_update_ppr(apic);
 	hrtimer_cancel(&apic->lapic_timer.timer);
+	apic_manage_nmi_watchdog(apic, apic_get_reg(apic, APIC_LVT0));
 	update_divide_count(apic);
 	start_apic_timer(apic);
 	apic->irr_pending = true;
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index ed2835e..65cf4f2 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -70,6 +70,17 @@ static const struct dmi_system_id pci_use_crs_table[] __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.. */
 
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index afa94f5..0985ab7 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -166,10 +166,12 @@ acpi_status acpi_enable_subsystem(u32 flags)
 	 * Obtain a permanent mapping for the FACS. This is required for the
 	 * Global Lock and the Firmware Waking Vector
 	 */
-	status = acpi_tb_initialize_facs();
-	if (ACPI_FAILURE(status)) {
-		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
-		return_ACPI_STATUS(status);
+	if (!(flags & ACPI_NO_FACS_INIT)) {
+		status = acpi_tb_initialize_facs();
+		if (ACPI_FAILURE(status)) {
+			ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+			return_ACPI_STATUS(status);
+		}
 	}
 #endif				/* !ACPI_REDUCED_HARDWARE */
 
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 8e81f85..0ac67ac 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -784,7 +784,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 			ret = regmap_read(map, reg + i, &ival);
 			if (ret != 0)
 				return ret;
-			memcpy(val + (i * val_bytes), &ival, val_bytes);
+			map->format.format_val(val + (i * val_bytes), ival);
 		}
 	}
 
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 52be498..4b8e03f 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -104,6 +104,7 @@ 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) },
@@ -153,6 +154,7 @@ 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, 0xE03C), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f8a58db..bbd1e6c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -182,6 +182,7 @@ 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 },
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 7f025fb..4e985cd 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1194,7 +1194,7 @@ static inline int needs_idle_maps(void)
 	/* Query intel_iommu to see if we need the workaround. Presumably that
 	 * was loaded first.
 	 */
-	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB ||
+	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG ||
 	     gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
 	     intel_iommu_gfx_mapped)
 		return 1;
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 921039e..a759fdc 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -2653,6 +2653,7 @@ 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);
 	}
 
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index fa5d55f..c8fecbc 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -390,7 +390,8 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 	dma_cookie_t cookie = 0;
 	int busy = mv_chan_is_busy(mv_chan);
 	u32 current_desc = mv_chan_get_current_desc(mv_chan);
-	int seen_current = 0;
+	int current_cleaned = 0;
+	struct mv_xor_desc *hw_desc;
 
 	dev_dbg(mv_chan->device->common.dev, "%s %d\n", __func__, __LINE__);
 	dev_dbg(mv_chan->device->common.dev, "current_desc %x\n", current_desc);
@@ -402,38 +403,57 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 
 	list_for_each_entry_safe(iter, _iter, &mv_chan->chain,
 					chain_node) {
-		prefetch(_iter);
-		prefetch(&_iter->async_tx);
 
-		/* do not advance past the current descriptor loaded into the
-		 * hardware channel, subsequent descriptors are either in
-		 * process or have not been submitted
-		 */
-		if (seen_current)
-			break;
+		/* clean finished descriptors */
+		hw_desc = iter->hw_desc;
+		if (hw_desc->status & XOR_DESC_SUCCESS) {
+			cookie = mv_xor_run_tx_complete_actions(iter, mv_chan,
+								cookie);
 
-		/* stop the search if we reach the current descriptor and the
-		 * channel is busy
-		 */
-		if (iter->async_tx.phys == current_desc) {
-			seen_current = 1;
-			if (busy)
+			/* done processing desc, clean slot */
+			mv_xor_clean_slot(iter, mv_chan);
+
+			/* break if we did cleaned the current */
+			if (iter->async_tx.phys == current_desc) {
+				current_cleaned = 1;
+				break;
+			}
+		} else {
+			if (iter->async_tx.phys == current_desc) {
+				current_cleaned = 0;
 				break;
+			}
 		}
-
-		cookie = mv_xor_run_tx_complete_actions(iter, mv_chan, cookie);
-
-		if (mv_xor_clean_slot(iter, mv_chan))
-			break;
 	}
 
 	if ((busy == 0) && !list_empty(&mv_chan->chain)) {
-		struct mv_xor_desc_slot *chain_head;
-		chain_head = list_entry(mv_chan->chain.next,
-					struct mv_xor_desc_slot,
-					chain_node);
-
-		mv_xor_start_new_chain(mv_chan, chain_head);
+		if (current_cleaned) {
+			/*
+			 * current descriptor cleaned and removed, run
+			 * from list head
+			 */
+			iter = list_entry(mv_chan->chain.next,
+					  struct mv_xor_desc_slot,
+					  chain_node);
+			mv_xor_start_new_chain(mv_chan, iter);
+		} else {
+			if (!list_is_last(&iter->chain_node, &mv_chan->chain)) {
+				/*
+				 * descriptors are still waiting after
+				 * current, trigger them
+				 */
+				iter = list_entry(iter->chain_node.next,
+						  struct mv_xor_desc_slot,
+						  chain_node);
+				mv_xor_start_new_chain(mv_chan, iter);
+			} else {
+				/*
+				 * some descriptors are still waiting
+				 * to be cleaned
+				 */
+				tasklet_schedule(&mv_chan->irq_tasklet);
+			}
+		}
 	}
 
 	if (cookie > 0)
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index 654876b..0af0377 100644
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -30,6 +30,7 @@
 #define XOR_OPERATION_MODE_XOR		0
 #define XOR_OPERATION_MODE_MEMCPY	2
 #define XOR_OPERATION_MODE_MEMSET	4
+#define XOR_DESC_SUCCESS		0x40000000
 
 #define XOR_CURR_DESC(chan)	(chan->mmr_base + 0x210 + (chan->idx * 4))
 #define XOR_NEXT_DESC(chan)	(chan->mmr_base + 0x200 + (chan->idx * 4))
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e1c744d..b1f1d10 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1779,6 +1779,9 @@ i915_gem_retire_requests_ring(struct intel_ring_buffer *ring)
 	uint32_t seqno;
 	int i;
 
+	if (list_empty(&ring->request_list))
+		return;
+
 	WARN_ON(i915_verify_lists(ring->dev));
 
 	seqno = ring->get_seqno(ring);
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index db4df97..c5fe79e 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1079,7 +1079,7 @@ int evergreen_pcie_gart_enable(struct radeon_device *rdev)
 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 1f45179..461262e 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1075,7 +1075,7 @@ int cayman_pcie_gart_enable(struct radeon_device *rdev)
 	       L2_CACHE_BIGK_FRAGMENT_SIZE(6));
 	/* setup context0 */
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
 			(u32)(rdev->dummy_page.addr >> 12));
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d441aed..9c7062d 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -930,7 +930,7 @@ int r600_pcie_gart_enable(struct radeon_device *rdev)
 	WREG32(MC_VM_L1_TLB_MCB_RD_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
 	WREG32(MC_VM_L1_TLB_MCB_WR_SEM_CNTL, tmp | ENABLE_SEMAPHORE_MODE);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index d66d2cd..f3ee360 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -49,7 +49,7 @@ int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
 	if (p->relocs_ptr == NULL) {
 		return -ENOMEM;
 	}
-	p->relocs = drm_calloc_large(p->nrelocs, sizeof(struct radeon_bo_list));
+	p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
 	if (p->relocs == NULL) {
 		return -ENOMEM;
 	}
@@ -324,7 +324,7 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
 		}
 	}
 	kfree(parser->track);
-	drm_free_large(parser->relocs);
+	kfree(parser->relocs);
 	kfree(parser->relocs_ptr);
 	for (i = 0; i < parser->nchunks; i++) {
 		kfree(parser->chunks[i].kdata);
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 645dcbf..77c456d 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -51,10 +51,12 @@ static void radeon_hotplug_work_func(struct work_struct *work)
 	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct drm_connector *connector;
 
+	mutex_lock(&mode_config->mutex);
 	if (mode_config->num_connector) {
 		list_for_each_entry(connector, &mode_config->connector_list, head)
 			radeon_connector_hotplug(connector);
 	}
+	mutex_unlock(&mode_config->mutex);
 	/* Just fire off a uevent and let userspace tell us what to do */
 	drm_helper_hpd_irq_event(dev);
 }
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 3358730..1ec1255 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -158,7 +158,7 @@ int rv770_pcie_gart_enable(struct radeon_device *rdev)
 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 3b6e641..6609a23 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2537,7 +2537,7 @@ int si_pcie_gart_enable(struct radeon_device *rdev)
 	       L2_CACHE_BIGK_FRAGMENT_SIZE(0));
 	/* setup context0 */
 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
-	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, (rdev->mc.gtt_end >> 12) - 1);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
 	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
 			(u32)(rdev->dummy_page.addr >> 12));
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index c7d4ef1..dcff64f 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -1429,6 +1429,10 @@ extern struct mutex qib_mutex;
 			qib_get_unit_name((dd)->unit), ##__VA_ARGS__); \
 	} while (0)
 
+#define qib_dev_warn(dd, fmt, ...) \
+	dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \
+		qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
+
 #define qib_dev_porterr(dd, port, fmt, ...) \
 	do { \
 		dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \
diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index 8fd19a4..ca6e6cf 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -69,6 +69,10 @@ int qib_alloc_lkey(struct qib_lkey_table *rkt, struct qib_mregion *mr)
 	 * unrestricted LKEY.
 	 */
 	rkt->gen++;
+	/*
+	 * bits are capped in qib_verbs.c to insure enough bits
+	 * for generation number
+	 */
 	mr->lkey = (r << (32 - ib_qib_lkey_table_size)) |
 		((((1 << (24 - ib_qib_lkey_table_size)) - 1) & rkt->gen)
 		 << 8);
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 7b6c3bf..395d9d6 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -40,6 +40,7 @@
 #include <linux/rculist.h>
 #include <linux/mm.h>
 #include <linux/random.h>
+#include <linux/vmalloc.h>
 
 #include "qib.h"
 #include "qib_common.h"
@@ -2058,10 +2059,16 @@ int qib_register_ib_device(struct qib_devdata *dd)
 	 * the LKEY).  The remaining bits act as a generation number or tag.
 	 */
 	spin_lock_init(&dev->lk_table.lock);
+	/* insure generation is at least 4 bits see keys.c */
+	if (ib_qib_lkey_table_size > MAX_LKEY_TABLE_BITS) {
+		qib_dev_warn(dd, "lkey bits %u too large, reduced to %u\n",
+			ib_qib_lkey_table_size, MAX_LKEY_TABLE_BITS);
+		ib_qib_lkey_table_size = MAX_LKEY_TABLE_BITS;
+	}
 	dev->lk_table.max = 1 << ib_qib_lkey_table_size;
 	lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
 	dev->lk_table.table = (struct qib_mregion **)
-		__get_free_pages(GFP_KERNEL, get_order(lk_tab_size));
+		vmalloc(lk_tab_size);
 	if (dev->lk_table.table == NULL) {
 		ret = -ENOMEM;
 		goto err_lk;
@@ -2231,7 +2238,7 @@ err_tx:
 					sizeof(struct qib_pio_header),
 				  dev->pio_hdrs, dev->pio_hdrs_phys);
 err_hdrs:
-	free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size));
+	vfree(dev->lk_table.table);
 err_lk:
 	kfree(dev->qp_table);
 err_qpt:
@@ -2285,7 +2292,6 @@ void qib_unregister_ib_device(struct qib_devdata *dd)
 					sizeof(struct qib_pio_header),
 				  dev->pio_hdrs, dev->pio_hdrs_phys);
 	lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
-	free_pages((unsigned long) dev->lk_table.table,
-		   get_order(lk_tab_size));
+	vfree(dev->lk_table.table);
 	kfree(dev->qp_table);
 }
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 0c19ef0..66f7f62 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -622,6 +622,8 @@ struct qib_qpn_table {
 	struct qpn_map map[QPNMAP_ENTRIES];
 };
 
+#define MAX_LKEY_TABLE_BITS 23
+
 struct qib_lkey_table {
 	spinlock_t lock; /* protect changes in this struct */
 	u32 next;               /* next unused index (speeds search) */
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c32a909..47a789e 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1372,9 +1372,11 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 			break;
 		case MMC_BLK_CMD_ERR:
 			ret = mmc_blk_cmd_err(md, card, brq, req, ret);
-			if (!mmc_blk_reset(md, card->host, type))
-				break;
-			goto cmd_abort;
+			if (mmc_blk_reset(md, card->host, type))
+				goto cmd_abort;
+			if (!ret)
+				goto start_new_req;
+			break;
 		case MMC_BLK_RETRY:
 			if (retry++ < 5)
 				break;
diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c
index 080f060..86598a1 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...
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index f1f0671..1917f7d 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -214,6 +214,7 @@ 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;
@@ -237,6 +238,7 @@ 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;
@@ -247,6 +249,7 @@ 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;
@@ -261,6 +264,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
 		return ret;
 
 	mutex_lock(&dev->lock);
+	mutex_lock(&mtd_table_mutex);
 
 	if (--dev->open)
 		goto unlock;
@@ -273,6 +277,7 @@ static int 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);
 	return ret;
diff --git a/drivers/net/ethernet/stmicro/stmmac/descs.h b/drivers/net/ethernet/stmicro/stmmac/descs.h
index 9820ec8..e93a0bf 100644
--- a/drivers/net/ethernet/stmicro/stmmac/descs.h
+++ b/drivers/net/ethernet/stmicro/stmmac/descs.h
@@ -153,6 +153,8 @@ struct dma_desc {
 			u32 buffer2_size:13;
 			u32 reserved4:3;
 		} etx;		/* -- enhanced -- */
+
+		u64 all_flags;
 	} des01;
 	unsigned int des2;
 	unsigned int des3;
diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
index ad1b627..e0db6f6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
@@ -232,6 +232,7 @@ static void enh_desc_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
 {
 	int i;
 	for (i = 0; i < ring_size; i++) {
+		p->des01.all_flags = 0;
 		p->des01.erx.own = 1;
 		p->des01.erx.buffer1_size = BUF_SIZE_8KiB - 1;
 
@@ -248,7 +249,7 @@ static void enh_desc_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
 	int i;
 
 	for (i = 0; i < ring_size; i++) {
-		p->des01.etx.own = 0;
+		p->des01.all_flags = 0;
 		ehn_desc_tx_set_on_ring_chain(p, (i == ring_size - 1));
 		p++;
 	}
@@ -271,6 +272,7 @@ static void enh_desc_set_tx_owner(struct dma_desc *p)
 
 static void enh_desc_set_rx_owner(struct dma_desc *p)
 {
+	p->des01.all_flags = 0;
 	p->des01.erx.own = 1;
 }
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
index 25953bb..9703340 100644
--- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
@@ -126,6 +126,7 @@ static void ndesc_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
 {
 	int i;
 	for (i = 0; i < ring_size; i++) {
+		p->des01.all_flags = 0;
 		p->des01.rx.own = 1;
 		p->des01.rx.buffer1_size = BUF_SIZE_2KiB - 1;
 
@@ -141,7 +142,7 @@ static void ndesc_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
 {
 	int i;
 	for (i = 0; i < ring_size; i++) {
-		p->des01.tx.own = 0;
+		p->des01.all_flags = 0;
 		ndesc_tx_set_on_ring_chain(p, (i == (ring_size - 1)));
 		p++;
 	}
@@ -164,6 +165,7 @@ static void ndesc_set_tx_owner(struct dma_desc *p)
 
 static void ndesc_set_rx_owner(struct dma_desc *p)
 {
+	p->des01.all_flags = 0;
 	p->des01.rx.own = 1;
 }
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 9bdfaba..88c8645 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -424,19 +424,17 @@ static void init_dma_desc_rings(struct net_device *dev)
 	priv->rx_skbuff =
 	    kmalloc(sizeof(struct sk_buff *) * rxsize, GFP_KERNEL);
 	priv->dma_rx =
-	    (struct dma_desc *)dma_alloc_coherent(priv->device,
-						  rxsize *
-						  sizeof(struct dma_desc),
-						  &priv->dma_rx_phy,
-						  GFP_KERNEL);
+	    (struct dma_desc *)dma_zalloc_coherent(priv->device, rxsize *
+						   sizeof(struct dma_desc),
+						   &priv->dma_rx_phy,
+						   GFP_KERNEL);
 	priv->tx_skbuff = kmalloc(sizeof(struct sk_buff *) * txsize,
 				       GFP_KERNEL);
 	priv->dma_tx =
-	    (struct dma_desc *)dma_alloc_coherent(priv->device,
-						  txsize *
-						  sizeof(struct dma_desc),
-						  &priv->dma_tx_phy,
-						  GFP_KERNEL);
+	    (struct dma_desc *)dma_zalloc_coherent(priv->device, txsize *
+						   sizeof(struct dma_desc),
+						   &priv->dma_tx_phy,
+						   GFP_KERNEL);
 
 	if ((priv->dma_rx == NULL) || (priv->dma_tx == NULL)) {
 		pr_err("%s:ERROR allocating the DMA Tx/Rx desc\n", __func__);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index ef26056..7e7bd15 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -235,7 +235,7 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
-	bool ret;
+	bool ret = true;
 
 	ieee80211_stop_queues(sc->hw);
 
@@ -245,10 +245,13 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
 	ath9k_debug_samp_bb_mac(sc);
 	ath9k_hw_disable_interrupts(ah);
 
-	ret = ath_drain_all_txq(sc, retry_tx);
-
-	if (!ath_stoprecv(sc))
-		ret = false;
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		ret &= ath_stoprecv(sc);
+		ret &= ath_drain_all_txq(sc, retry_tx);
+	} else {
+		ret &= ath_drain_all_txq(sc, retry_tx);
+		ret &= ath_stoprecv(sc);
+	}
 
 	if (!flush) {
 		if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index d66e298..414ac49 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -407,9 +407,9 @@ struct ndis_80211_pmkid {
 #define CAP_MODE_80211G		4
 #define CAP_MODE_MASK		7
 
-#define WORK_LINK_UP		(1<<0)
-#define WORK_LINK_DOWN		(1<<1)
-#define WORK_SET_MULTICAST_LIST	(1<<2)
+#define WORK_LINK_UP		0
+#define WORK_LINK_DOWN		1
+#define WORK_SET_MULTICAST_LIST	2
 
 #define RNDIS_WLAN_ALG_NONE	0
 #define RNDIS_WLAN_ALG_WEP	(1<<0)
diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
index 615a45a..582688fe 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;
 }
 
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index e6c08ee..3d67591 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -216,7 +216,6 @@ static struct dmi_system_id __devinitdata dell_quirks[] = {
 };
 
 static struct calling_interface_buffer *buffer;
-static struct page *bufferpage;
 static DEFINE_MUTEX(buffer_mutex);
 
 static int hwswitch_state;
@@ -714,11 +713,10 @@ static int __init dell_init(void)
 	 * Allocate buffer below 4GB for SMI data--only 32-bit physical addr
 	 * is passed to SMI handler.
 	 */
-	bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32);
+	buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32);
 
-	if (!bufferpage)
+	if (!buffer)
 		goto fail_buffer;
-	buffer = page_address(bufferpage);
 
 	ret = dell_setup_rfkill();
 
@@ -787,7 +785,7 @@ fail_backlight:
 fail_filter:
 	dell_cleanup_rfkill();
 fail_rfkill:
-	free_page((unsigned long)bufferpage);
+	free_page((unsigned long)buffer);
 fail_buffer:
 	platform_device_del(platform_device);
 fail_platform_device2:
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index ac902f7..34e9fcf 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -407,7 +407,8 @@ const struct ideapad_rfk_data ideapad_rfk_data[] = {
 
 static int ideapad_rfk_set(void *data, bool blocked)
 {
-	unsigned long opcode = (unsigned long)data;
+	unsigned long dev = (unsigned long)data;
+	int opcode = ideapad_rfk_data[dev].opcode;
 
 	return write_ec_cmd(ideapad_handle, opcode, !blocked);
 }
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 0d71557..c8f160d 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -749,7 +749,7 @@ 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;
 
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 153b8bd..19ff8b2 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -251,7 +251,7 @@
 #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
diff --git a/drivers/staging/rtl8712/rtl8712_recv.c b/drivers/staging/rtl8712/rtl8712_recv.c
index 887a807..549b8ab 100644
--- a/drivers/staging/rtl8712/rtl8712_recv.c
+++ b/drivers/staging/rtl8712/rtl8712_recv.c
@@ -1074,7 +1074,8 @@ static int recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
 		/* for first fragment packet, driver need allocate 1536 +
 		 * drvinfo_sz + RXDESC_SIZE to defrag packet. */
 		if ((mf == 1) && (frag == 0))
-			alloc_sz = 1658;/*1658+6=1664, 1664 is 128 alignment.*/
+			/*1658+6=1664, 1664 is 128 alignment.*/
+			alloc_sz = max_t(u16, tmp_len, 1658);
 		else
 			alloc_sz = tmp_len;
 		/* 2 is for IP header 4 bytes alignment in QoS packet case.
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index ff58d28..85c28e3 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -229,8 +229,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
 	if (rs485conf->flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
 		atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
-		if ((rs485conf->delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
+		UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -305,9 +304,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
 
 	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
-		if ((atmel_port->rs485.delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port,
-					atmel_port->rs485.delay_rts_after_send);
+		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -1239,9 +1236,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
-		if ((atmel_port->rs485.delay_rts_after_send) > 0)
-			UART_PUT_TTGR(port,
-					atmel_port->rs485.delay_rts_after_send);
+		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 93f2538..62ea924 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2176,9 +2176,6 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
 #define HUB_LONG_RESET_TIME	200
 #define HUB_RESET_TIMEOUT	800
 
-static int hub_port_reset(struct usb_hub *hub, int port1,
-			struct usb_device *udev, unsigned int delay, bool warm);
-
 /* Is a USB 3.0 port in the Inactive or Complinance Mode state?
  * Port worm reset is required to recover
  */
@@ -2258,44 +2255,6 @@ delay:
 	return -EBUSY;
 }
 
-static void hub_port_finish_reset(struct usb_hub *hub, int port1,
-			struct usb_device *udev, int *status)
-{
-	switch (*status) {
-	case 0:
-		/* TRSTRCY = 10 ms; plus some extra */
-		msleep(10 + 40);
-		if (udev) {
-			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
-
-			update_devnum(udev, 0);
-			/* The xHC may think the device is already reset,
-			 * so ignore the status.
-			 */
-			if (hcd->driver->reset_device)
-				hcd->driver->reset_device(hcd, udev);
-		}
-		/* FALL THROUGH */
-	case -ENOTCONN:
-	case -ENODEV:
-		clear_port_feature(hub->hdev,
-				port1, USB_PORT_FEAT_C_RESET);
-		if (hub_is_superspeed(hub->hdev)) {
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_BH_PORT_RESET);
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_PORT_LINK_STATE);
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_CONNECTION);
-		}
-		if (udev)
-			usb_set_device_state(udev, *status
-					? USB_STATE_NOTATTACHED
-					: USB_STATE_DEFAULT);
-		break;
-	}
-}
-
 /* Handle port reset and port warm(BH) reset (for USB3 protocol ports) */
 static int hub_port_reset(struct usb_hub *hub, int port1,
 			struct usb_device *udev, unsigned int delay, bool warm)
@@ -2318,13 +2277,9 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 		 * If the caller hasn't explicitly requested a warm reset,
 		 * double check and see if one is needed.
 		 */
-		status = hub_port_status(hub, port1,
-					&portstatus, &portchange);
-		if (status < 0)
-			goto done;
-
-		if (hub_port_warm_reset_required(hub, portstatus))
-			warm = true;
+		if (hub_port_status(hub, port1, &portstatus, &portchange) == 0)
+			if (hub_port_warm_reset_required(hub, portstatus))
+				warm = true;
 	}
 
 	/* Reset the port */
@@ -2347,11 +2302,19 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 
 		/* Check for disconnect or reset */
 		if (status == 0 || status == -ENOTCONN || status == -ENODEV) {
-			hub_port_finish_reset(hub, port1, udev, &status);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_RESET);
 
 			if (!hub_is_superspeed(hub->hdev))
 				goto done;
 
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_BH_PORT_RESET);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_PORT_LINK_STATE);
+			clear_port_feature(hub->hdev, port1,
+					USB_PORT_FEAT_C_CONNECTION);
+
 			/*
 			 * If a USB 3.0 device migrates from reset to an error
 			 * state, re-issue the warm reset.
@@ -2385,6 +2348,26 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
 		port1);
 
 done:
+	if (status == 0) {
+		/* TRSTRCY = 10 ms; plus some extra */
+		msleep(10 + 40);
+		if (udev) {
+			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+			update_devnum(udev, 0);
+			/* The xHC may think the device is already reset,
+			 * so ignore the status.
+			 */
+			if (hcd->driver->reset_device)
+				hcd->driver->reset_device(hcd, udev);
+
+			usb_set_device_state(udev, USB_STATE_DEFAULT);
+		}
+	} else {
+		if (udev)
+			usb_set_device_state(udev, USB_STATE_NOTATTACHED);
+	}
+
 	if (!hub_is_superspeed(hub->hdev))
 		up_read(&ehci_cf_port_reset_rwsem);
 
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 8a7a8ee..a8714fd 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -644,6 +644,10 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
 		dev_vdbg(dwc->dev, "Status Phase\n");
 		dwc3_ep0_complete_req(dwc, event);
 		break;
+	case USB_REQ_SET_INTERFACE:
+		dev_vdbg(dwc->dev, "USB_REQ_SET_INTERFACE\n");
+		dwc->start_config_issued = false;
+		/* Fall through */
 	default:
 		WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state);
 	}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b7f8926..b43c6f9 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -301,6 +301,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		if (!(reg & DWC3_DEPCMD_CMDACT)) {
 			dev_vdbg(dwc->dev, "Command Complete --> %d\n",
 					DWC3_DEPCMD_STATUS(reg));
+			if (DWC3_DEPCMD_STATUS(reg))
+				return -EINVAL;
 			return 0;
 		}
 
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index 8285d65..c080be5 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -152,6 +152,13 @@ static int omap_wdt_open(struct inode *inode, struct file *file)
 
 	pm_runtime_get_sync(wdev->dev);
 
+	/*
+	 * Make sure the watchdog is disabled. This is unfortunately required
+	 * because writing to various registers with the watchdog running has no
+	 * effect.
+	 */
+	omap_wdt_disable(wdev);
+
 	/* initialize prescaler */
 	while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01)
 		cpu_relax();
diff --git a/fs/dcache.c b/fs/dcache.c
index d071ea7..03eb2c2 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2518,6 +2518,8 @@ static int prepend_path(const struct path *path,
 	struct dentry *dentry = path->dentry;
 	struct vfsmount *vfsmnt = path->mnt;
 	struct mount *mnt = real_mount(vfsmnt);
+	char *orig_buffer = *buffer;
+	int orig_len = *buflen;
 	bool slash = false;
 	int error = 0;
 
@@ -2525,6 +2527,14 @@ static int prepend_path(const struct path *path,
 		struct dentry * parent;
 
 		if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
+			/* Escaped? */
+			if (dentry != vfsmnt->mnt_root) {
+				*buffer = orig_buffer;
+				*buflen = orig_len;
+				slash = false;
+				error = 3;
+				goto global_root;
+			}
 			/* Global root? */
 			if (!mnt_has_parent(mnt))
 				goto global_root;
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 6dc6153..f819837 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -705,7 +705,7 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
 				       EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
 		EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
 				 "non-extent mapped inodes with bigalloc");
-		return -ENOSPC;
+		return -EUCLEAN;
 	}
 
 	goal = ext4_find_goal(inode, map->m_lblk, partial);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9e9db42..facf1cf 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1848,18 +1848,32 @@ static int __ext4_journalled_writepage(struct page *page,
 	page_bufs = page_buffers(page);
 	BUG_ON(!page_bufs);
 	walk_page_buffers(handle, page_bufs, 0, len, NULL, bget_one);
-	/* As soon as we unlock the page, it can go away, but we have
-	 * references to buffers so we are safe */
+	/*
+	 * We need to release the page lock before we start the
+	 * journal, so grab a reference so the page won't disappear
+	 * out from under us.
+	 */
+	get_page(page);
 	unlock_page(page);
 
 	handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
 	if (IS_ERR(handle)) {
 		ret = PTR_ERR(handle);
-		goto out;
+		put_page(page);
+		goto out_no_pagelock;
 	}
 
 	BUG_ON(!ext4_handle_valid(handle));
 
+	lock_page(page);
+	put_page(page);
+	if (page->mapping != mapping) {
+		/* The page got truncated from under us */
+		ext4_journal_stop(handle);
+		ret = 0;
+		goto out;
+	}
+
 	ret = walk_page_buffers(handle, page_bufs, 0, len, NULL,
 				do_journal_get_write_access);
 
@@ -1875,6 +1889,8 @@ static int __ext4_journalled_writepage(struct page *page,
 	walk_page_buffers(handle, page_bufs, 0, len, NULL, bput_one);
 	ext4_set_inode_state(inode, EXT4_STATE_JDATA);
 out:
+	unlock_page(page);
+out_no_pagelock:
 	return ret;
 }
 
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 92ea560..2e26a54 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -888,6 +888,7 @@ static void ext4_put_super(struct super_block *sb)
 		dump_orphan_list(sb, sbi);
 	J_ASSERT(list_empty(&sbi->s_orphan));
 
+	sync_blockdev(sb->s_bdev);
 	invalidate_bdev(sb->s_bdev);
 	if (sbi->journal_bdev && sbi->journal_bdev != sb->s_bdev) {
 		/*
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index a5c8b34..d8bc0a8 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -981,6 +981,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
 		goto err_fput;
 
 	fuse_conn_init(fc);
+	fc->release = fuse_free_conn;
 
 	fc->dev = sb->s_dev;
 	fc->sb = sb;
@@ -995,7 +996,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
 		fc->dont_mask = 1;
 	sb->s_flags |= MS_POSIXACL;
 
-	fc->release = fuse_free_conn;
 	fc->flags = d.flags;
 	fc->user_id = d.user_id;
 	fc->group_id = d.group_id;
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index c78841e..4fd7856 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -440,7 +440,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
 	unsigned long	blocknr;
 
 	if (is_journal_aborted(journal))
-		return 1;
+		return -EIO;
 
 	if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr))
 		return 1;
@@ -455,10 +455,9 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
 	 * jbd2_cleanup_journal_tail() doesn't get called all that often.
 	 */
 	if (journal->j_flags & JBD2_BARRIER)
-		blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+		blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
 
-	__jbd2_update_log_tail(journal, first_tid, blocknr);
-	return 0;
+	return __jbd2_update_log_tail(journal, first_tid, blocknr);
 }
 
 
@@ -468,14 +467,14 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
  * journal_clean_one_cp_list
  *
  * Find all the written-back checkpoint buffers in the given list and
- * release them.
+ * release them. If 'destroy' is set, clean all buffers unconditionally.
  *
  * Called with the journal locked.
  * Called with j_list_lock held.
  * Returns number of buffers reaped (for debug)
  */
 
-static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
+static int journal_clean_one_cp_list(struct journal_head *jh, int *released, bool destroy)
 {
 	struct journal_head *last_jh;
 	struct journal_head *next_jh = jh;
@@ -489,7 +488,10 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
 	do {
 		jh = next_jh;
 		next_jh = jh->b_cpnext;
-		ret = __try_to_free_cp_buf(jh);
+		if (!destroy)
+			ret = __try_to_free_cp_buf(jh);
+		else
+			ret = __jbd2_journal_remove_checkpoint(jh) + 1;
 		if (ret) {
 			freed++;
 			if (ret == 2) {
@@ -515,12 +517,14 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
  *
  * Find all the written-back checkpoint buffers in the journal and release them.
  *
+ * If 'destroy' is set, release all buffers unconditionally.
+ *
  * Called with the journal locked.
  * Called with j_list_lock held.
  * Returns number of buffers reaped (for debug)
  */
 
-int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
 {
 	transaction_t *transaction, *last_transaction, *next_transaction;
 	int ret = 0;
@@ -536,7 +540,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
 		transaction = next_transaction;
 		next_transaction = transaction->t_cpnext;
 		ret += journal_clean_one_cp_list(transaction->
-				t_checkpoint_list, &released);
+				t_checkpoint_list, &released, destroy);
 		/*
 		 * This function only frees up some memory if possible so we
 		 * dont have an obligation to finish processing. Bail out if
@@ -552,7 +556,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
 		 * we can possibly see not yet submitted buffers on io_list
 		 */
 		ret += journal_clean_one_cp_list(transaction->
-				t_checkpoint_io_list, &released);
+				t_checkpoint_io_list, &released, destroy);
 		if (need_resched())
 			goto out;
 	} while (transaction != last_transaction);
@@ -561,6 +565,28 @@ out:
 }
 
 /*
+ * Remove buffers from all checkpoint lists as journal is aborted and we just
+ * need to free memory
+ */
+void jbd2_journal_destroy_checkpoint(journal_t *journal)
+{
+	/*
+	 * We loop because __jbd2_journal_clean_checkpoint_list() may abort
+	 * early due to a need of rescheduling.
+	 */
+	while (1) {
+		spin_lock(&journal->j_list_lock);
+		if (!journal->j_checkpoint_transactions) {
+			spin_unlock(&journal->j_list_lock);
+			break;
+		}
+		__jbd2_journal_clean_checkpoint_list(journal, true);
+		spin_unlock(&journal->j_list_lock);
+		cond_resched();
+	}
+}
+
+/*
  * journal_remove_checkpoint: called after a buffer has been committed
  * to disk (either by being write-back flushed to disk, or being
  * committed to the log).
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index a0dcbd62..259f28d 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -438,7 +438,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
 	 * frees some memory
 	 */
 	spin_lock(&journal->j_list_lock);
-	__jbd2_journal_clean_checkpoint_list(journal);
+	__jbd2_journal_clean_checkpoint_list(journal, false);
 	spin_unlock(&journal->j_list_lock);
 
 	jbd_debug(3, "JBD2: commit phase 1\n");
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f697468..a327944 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -823,9 +823,10 @@ int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
  *
  * Requires j_checkpoint_mutex
  */
-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
 {
 	unsigned long freed;
+	int ret;
 
 	BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
 
@@ -835,7 +836,10 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
 	 * space and if we lose sb update during power failure we'd replay
 	 * old transaction with possibly newly overwritten data.
 	 */
-	jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+	ret = jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+	if (ret)
+		goto out;
+
 	write_lock(&journal->j_state_lock);
 	freed = block - journal->j_tail;
 	if (block < journal->j_tail)
@@ -851,6 +855,9 @@ void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
 	journal->j_tail_sequence = tid;
 	journal->j_tail = block;
 	write_unlock(&journal->j_state_lock);
+
+out:
+	return ret;
 }
 
 /*
@@ -1264,7 +1271,7 @@ static int journal_reset(journal_t *journal)
 	return jbd2_journal_start_thread(journal);
 }
 
-static void jbd2_write_superblock(journal_t *journal, int write_op)
+static int jbd2_write_superblock(journal_t *journal, int write_op)
 {
 	struct buffer_head *bh = journal->j_sb_buffer;
 	int ret;
@@ -1301,7 +1308,10 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
 		printk(KERN_ERR "JBD2: Error %d detected when updating "
 		       "journal superblock for %s.\n", ret,
 		       journal->j_devname);
+		jbd2_journal_abort(journal, ret);
 	}
+
+	return ret;
 }
 
 /**
@@ -1314,10 +1324,11 @@ static void jbd2_write_superblock(journal_t *journal, int write_op)
  * Update a journal's superblock information about log tail and write it to
  * disk, waiting for the IO to complete.
  */
-void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
 				     unsigned long tail_block, int write_op)
 {
 	journal_superblock_t *sb = journal->j_superblock;
+	int ret;
 
 	BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
 	jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
@@ -1326,13 +1337,18 @@ void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
 	sb->s_sequence = cpu_to_be32(tail_tid);
 	sb->s_start    = cpu_to_be32(tail_block);
 
-	jbd2_write_superblock(journal, write_op);
+	ret = jbd2_write_superblock(journal, write_op);
+	if (ret)
+		goto out;
 
 	/* Log is no longer empty */
 	write_lock(&journal->j_state_lock);
 	WARN_ON(!sb->s_sequence);
 	journal->j_flags &= ~JBD2_FLUSHED;
 	write_unlock(&journal->j_state_lock);
+
+out:
+	return ret;
 }
 
 /**
@@ -1575,8 +1591,17 @@ int jbd2_journal_destroy(journal_t *journal)
 	while (journal->j_checkpoint_transactions != NULL) {
 		spin_unlock(&journal->j_list_lock);
 		mutex_lock(&journal->j_checkpoint_mutex);
-		jbd2_log_do_checkpoint(journal);
+		err = jbd2_log_do_checkpoint(journal);
 		mutex_unlock(&journal->j_checkpoint_mutex);
+		/*
+		 * If checkpointing failed, just free the buffers to avoid
+		 * looping forever
+		 */
+		if (err) {
+			jbd2_journal_destroy_checkpoint(journal);
+			spin_lock(&journal->j_list_lock);
+			break;
+		}
 		spin_lock(&journal->j_list_lock);
 	}
 
@@ -1785,7 +1810,14 @@ int jbd2_journal_flush(journal_t *journal)
 		return -EIO;
 
 	mutex_lock(&journal->j_checkpoint_mutex);
-	jbd2_cleanup_journal_tail(journal);
+	if (!err) {
+		err = jbd2_cleanup_journal_tail(journal);
+		if (err < 0) {
+			mutex_unlock(&journal->j_checkpoint_mutex);
+			goto out;
+		}
+		err = 0;
+	}
 
 	/* Finally, mark the journal as really needing no recovery.
 	 * This sets s_start==0 in the underlying superblock, which is
@@ -1801,7 +1833,8 @@ int jbd2_journal_flush(journal_t *journal)
 	J_ASSERT(journal->j_head == journal->j_tail);
 	J_ASSERT(journal->j_tail_sequence == journal->j_transaction_sequence);
 	write_unlock(&journal->j_state_lock);
-	return 0;
+out:
+	return err;
 }
 
 /**
diff --git a/fs/namei.c b/fs/namei.c
index 9c4b9b8..4fc034f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -397,6 +397,24 @@ void path_put(struct path *path)
 }
 EXPORT_SYMBOL(path_put);
 
+/**
+ * path_connected - Verify that a path->dentry is below path->mnt.mnt_root
+ * @path: nameidate to verify
+ *
+ * Rename can sometimes move a file or directory outside of a bind
+ * mount, path_connected allows those cases to be detected.
+ */
+static bool path_connected(const struct path *path)
+{
+	struct vfsmount *mnt = path->mnt;
+
+	/* Only bind mounts can have disconnected paths */
+	if (mnt->mnt_root == mnt->mnt_sb->s_root)
+		return true;
+
+	return is_subdir(path->dentry, mnt->mnt_root);
+}
+
 /*
  * Path walking has 2 modes, rcu-walk and ref-walk (see
  * Documentation/filesystems/path-lookup.txt).  In situations when we can't
@@ -945,6 +963,8 @@ static int follow_dotdot_rcu(struct nameidata *nd)
 				goto failed;
 			nd->path.dentry = parent;
 			nd->seq = seq;
+			if (unlikely(!path_connected(&nd->path)))
+				goto failed;
 			break;
 		}
 		if (!follow_up_rcu(&nd->path))
@@ -1029,7 +1049,7 @@ static void follow_mount(struct path *path)
 	}
 }
 
-static void follow_dotdot(struct nameidata *nd)
+static int follow_dotdot(struct nameidata *nd)
 {
 	if (!nd->root.mnt)
 		set_root(nd);
@@ -1045,6 +1065,10 @@ static void follow_dotdot(struct nameidata *nd)
 			/* rare case of legitimate dget_parent()... */
 			nd->path.dentry = dget_parent(nd->path.dentry);
 			dput(old);
+			if (unlikely(!path_connected(&nd->path))) {
+				path_put(&nd->path);
+				return -ENOENT;
+			}
 			break;
 		}
 		if (!follow_up(&nd->path))
@@ -1052,6 +1076,7 @@ static void follow_dotdot(struct nameidata *nd)
 	}
 	follow_mount(&nd->path);
 	nd->inode = nd->path.dentry->d_inode;
+	return 0;
 }
 
 /*
@@ -1252,7 +1277,7 @@ static inline int handle_dots(struct nameidata *nd, int type)
 			if (follow_dotdot_rcu(nd))
 				return -ECHILD;
 		} else
-			follow_dotdot(nd);
+			return follow_dotdot(nd);
 	}
 	return 0;
 }
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index a77cc9a..e60bbe2 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -1333,7 +1333,7 @@ static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
 	if (args->npages != 0)
 		xdr_write_pages(xdr, args->pages, 0, args->len);
 	else
-		xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE);
+		xdr_reserve_space(xdr, args->len);
 
 	error = nfsacl_encode(xdr->buf, base, args->inode,
 			    (args->mask & NFS_ACL) ?
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index c4600b5..1639a4c 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1279,6 +1279,8 @@ restart:
 				}
 				spin_unlock(&state->state_lock);
 				nfs4_put_open_state(state);
+				clear_bit(NFS4CLNT_RECLAIM_NOGRACE,
+					&state->flags);
 				goto restart;
 			}
 		}
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 6d52429..0460073 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -495,6 +495,7 @@ typedef u64 acpi_integer;
 #define ACPI_NO_ACPI_ENABLE             0x10
 #define ACPI_NO_DEVICE_INIT             0x20
 #define ACPI_NO_OBJECT_INIT             0x40
+#define ACPI_NO_FACS_INIT               0x80
 
 /*
  * Initialization state
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 2ffbf99..2179d78 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -974,15 +974,16 @@ extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
 int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
 int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
 			      unsigned long *block);
-void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
 void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
 
 /* Commit management */
 extern void jbd2_journal_commit_transaction(journal_t *);
 
 /* Checkpoint list management */
-int __jbd2_journal_clean_checkpoint_list(journal_t *journal);
+int __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy);
 int __jbd2_journal_remove_checkpoint(struct journal_head *);
+void jbd2_journal_destroy_checkpoint(journal_t *journal);
 void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *);
 
 
@@ -1093,7 +1094,7 @@ extern int	   jbd2_journal_recover    (journal_t *journal);
 extern int	   jbd2_journal_wipe       (journal_t *, int);
 extern int	   jbd2_journal_skip_recovery	(journal_t *);
 extern void	   jbd2_journal_update_sb_errno(journal_t *);
-extern void	   jbd2_journal_update_sb_log_tail	(journal_t *, tid_t,
+extern int	   jbd2_journal_update_sb_log_tail	(journal_t *, tid_t,
 				unsigned long, int);
 extern void	   __jbd2_journal_abort_hard	(journal_t *);
 extern void	   jbd2_journal_abort      (journal_t *, int);
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 7ba3551..845b402 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1061,7 +1061,7 @@ struct nfstime4 {
 };
 
 #ifdef CONFIG_NFS_V4_1
-#define NFS4_EXCHANGE_ID_LEN	(48)
+#define NFS4_EXCHANGE_ID_LEN	(127)
 struct nfs41_exchange_id_args {
 	struct nfs_client		*client;
 	nfs4_verifier			*verifier;
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 88949a9..4ea0ec6 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -209,6 +209,7 @@ extern struct sctp_globals {
 	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 */
@@ -355,6 +356,10 @@ 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/kernel/hrtimer.c b/kernel/hrtimer.c
index 434f2b6..34031a0 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -853,6 +853,9 @@ u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
 	if (delta.tv64 < 0)
 		return 0;
 
+	if (WARN_ON(timer->state & HRTIMER_STATE_ENQUEUED))
+		return 0;
+
 	if (interval.tv64 < timer->base->resolution.tv64)
 		interval.tv64 = timer->base->resolution.tv64;
 
@@ -1265,11 +1268,14 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now)
 	 * Note: We clear the CALLBACK bit after enqueue_hrtimer and
 	 * we do not reprogramm the event hardware. Happens either in
 	 * hrtimer_start_range_ns() or in hrtimer_interrupt()
+	 *
+	 * Note: Because we dropped the cpu_base->lock above,
+	 * hrtimer_start_range_ns() can have popped in and enqueued the timer
+	 * for us already.
 	 */
-	if (restart != HRTIMER_NORESTART) {
-		BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
+	if (restart != HRTIMER_NORESTART &&
+	    !(timer->state & HRTIMER_STATE_ENQUEUED))
 		enqueue_hrtimer(timer, base);
-	}
 
 	WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK));
 
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 37a5444..60a56f4 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -279,6 +279,11 @@ 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;
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 3b04aec..096d774 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1044,6 +1044,9 @@ static void parse_init(struct filter_parse_state *ps,
 
 static char infix_next(struct filter_parse_state *ps)
 {
+	if (!ps->infix.cnt)
+		return 0;
+
 	ps->infix.cnt--;
 
 	return ps->infix.string[ps->infix.tail++];
@@ -1059,6 +1062,9 @@ static char infix_peek(struct filter_parse_state *ps)
 
 static void infix_advance(struct filter_parse_state *ps)
 {
+	if (!ps->infix.cnt)
+		return;
+
 	ps->infix.cnt--;
 	ps->infix.tail++;
 }
@@ -1372,7 +1378,9 @@ static int check_preds(struct filter_parse_state *ps)
 		}
 		cnt--;
 		n_normal_preds++;
-		WARN_ON_ONCE(cnt < 0);
+		/* all ops should have operands */
+		if (cnt < 0)
+			break;
 	}
 
 	if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 6ccf212..f62496a 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -603,12 +603,12 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 	unsigned a, b;
 	int c, old_c, totaldigits;
 	const char __user __force *ubuf = (const char __user __force *)buf;
-	int exp_digit, in_range;
+	int at_start, in_range;
 
 	totaldigits = c = 0;
 	bitmap_zero(maskp, nmaskbits);
 	do {
-		exp_digit = 1;
+		at_start = 1;
 		in_range = 0;
 		a = b = 0;
 
@@ -637,11 +637,10 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 				break;
 
 			if (c == '-') {
-				if (exp_digit || in_range)
+				if (at_start || in_range)
 					return -EINVAL;
 				b = 0;
 				in_range = 1;
-				exp_digit = 1;
 				continue;
 			}
 
@@ -651,16 +650,18 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 			b = b * 10 + (c - '0');
 			if (!in_range)
 				a = b;
-			exp_digit = 0;
+			at_start = 0;
 			totaldigits++;
 		}
 		if (!(a <= b))
 			return -EINVAL;
 		if (b >= nmaskbits)
 			return -ERANGE;
-		while (a <= b) {
-			set_bit(a, maskp);
-			a++;
+		if (!at_start) {
+			while (a <= b) {
+				set_bit(a, maskp);
+				a++;
+			}
 		}
 	} while (buflen && c == ',');
 	return 0;
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index ad6ee88..c74827c 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -193,6 +193,8 @@ static struct kmem_cache *scan_area_cache;
 
 /* set if tracing memory operations is enabled */
 static atomic_t kmemleak_enabled = ATOMIC_INIT(0);
+/* same as above but only for the kmemleak_free() callback */
+static int kmemleak_free_enabled;
 /* set in the late_initcall if there were no errors */
 static atomic_t kmemleak_initialized = ATOMIC_INIT(0);
 /* enables or disables early logging of the memory operations */
@@ -936,7 +938,7 @@ void __ref kmemleak_free(const void *ptr)
 {
 	pr_debug("%s(0x%p)\n", __func__, ptr);
 
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
 		delete_object_full((unsigned long)ptr);
 	else if (atomic_read(&kmemleak_early_log))
 		log_early(KMEMLEAK_FREE, ptr, 0, 0);
@@ -976,7 +978,7 @@ void __ref kmemleak_free_percpu(const void __percpu *ptr)
 
 	pr_debug("%s(0x%p)\n", __func__, ptr);
 
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
 		for_each_possible_cpu(cpu)
 			delete_object_full((unsigned long)per_cpu_ptr(ptr,
 								      cpu));
@@ -1690,6 +1692,13 @@ static void kmemleak_do_cleanup(struct work_struct *work)
 	mutex_lock(&scan_mutex);
 	stop_scan_thread();
 
+	/*
+	 * Once the scan thread has stopped, it is safe to no longer track
+	 * object freeing. Ordering of the scan thread stopping and the memory
+	 * accesses below is guaranteed by the kthread_stop() function.
+	  */
+	kmemleak_free_enabled = 0;
+
 	if (cleanup) {
 		rcu_read_lock();
 		list_for_each_entry_rcu(object, &object_list, object_list)
@@ -1717,6 +1726,8 @@ static void kmemleak_disable(void)
 	/* check whether it is too early for a kernel thread */
 	if (atomic_read(&kmemleak_initialized))
 		schedule_work(&cleanup_work);
+	else
+		kmemleak_free_enabled = 0;
 
 	pr_info("Kernel memory leak detector disabled\n");
 }
@@ -1782,8 +1793,10 @@ void __init kmemleak_init(void)
 	if (atomic_read(&kmemleak_error)) {
 		local_irq_restore(flags);
 		return;
-	} else
+	} else {
 		atomic_set(&kmemleak_enabled, 1);
+		kmemleak_free_enabled = 1;
+	}
 	local_irq_restore(flags);
 
 	/*
diff --git a/net/9p/client.c b/net/9p/client.c
index b23a17c..32df0a3 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -833,7 +833,8 @@ static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
 	if (err < 0) {
 		if (err == -EIO)
 			c->status = Disconnected;
-		goto reterr;
+		if (err != -ERESTARTSYS)
+			goto reterr;
 	}
 	if (req->status == REQ_STATUS_ERROR) {
 		p9_debug(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
index 7222fe1..ea0e15c 100644
--- a/net/bridge/br_ioctl.c
+++ b/net/bridge/br_ioctl.c
@@ -246,9 +246,7 @@ static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		if (!capable(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_multicast.c b/net/bridge/br_multicast.c
index a41051a..87ae8c3 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -36,6 +36,9 @@
 #define mlock_dereference(X, br) \
 	rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
 
+static void br_multicast_add_router(struct net_bridge *br,
+				    struct net_bridge_port *port);
+
 #if IS_ENABLED(CONFIG_IPV6)
 static inline int ipv6_is_transient_multicast(const struct in6_addr *addr)
 {
@@ -842,6 +845,8 @@ void br_multicast_enable_port(struct net_bridge_port *port)
 		goto out;
 
 	__br_multicast_enable_port(port);
+	if (port->multicast_router == 2 && hlist_unhashed(&port->rlist))
+		br_multicast_add_router(br, port);
 
 out:
 	spin_unlock(&br->multicast_lock);
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 2f100cc..23ea159 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -242,12 +242,13 @@ 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) {
@@ -265,6 +266,7 @@ 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 */
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 7fbe210..d4fbcb6 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -102,7 +102,7 @@ static int crush_decode_tree_bucket(void **p, void *end,
 {
 	int j;
 	dout("crush_decode_tree_bucket %p to %p\n", *p, end);
-	ceph_decode_32_safe(p, end, b->num_nodes, bad);
+	ceph_decode_8_safe(p, end, b->num_nodes, bad);
 	b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS);
 	if (b->node_weights == NULL)
 		return -ENOMEM;
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 546b133..ffa5d5d 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -568,7 +568,7 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
 			   "     dst_min: %s  dst_max: %s\n",
 			   pkt_dev->dst_min, pkt_dev->dst_max);
 		seq_printf(seq,
-			   "        src_min: %s  src_max: %s\n",
+			   "     src_min: %s  src_max: %s\n",
 			   pkt_dev->src_min, pkt_dev->src_max);
 	}
 
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index dbe1715..79c75e1 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1169,16 +1169,6 @@ 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 struct sock *fanout_demux_hash(struct packet_fanout *f, struct sk_buff *skb, unsigned int num)
 {
 	u32 idx, hash = skb->rxhash;
@@ -1190,13 +1180,9 @@ static struct sock *fanout_demux_hash(struct packet_fanout *f, struct sk_buff *s
 
 static struct sock *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 f->arr[cur];
+	return f->arr[val % num];
 }
 
 static struct sock *fanout_demux_cpu(struct packet_fanout *f, struct sk_buff *skb, unsigned int num)
@@ -1210,7 +1196,7 @@ 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;
 	struct sock *sk;
 
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 0c0bd2f..bc7b5de 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1539,8 +1539,10 @@ SCTP_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(&sctp_globals.addr_wq_lock);
 	sctp_bh_lock_sock(sk);
 
 	/* Hold the sock, since sk_common_release() will put sock_put()
@@ -1550,7 +1552,7 @@ SCTP_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(&sctp_globals.addr_wq_lock);
 
 	sock_put(sk);
 
@@ -3492,6 +3494,7 @@ 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(&sctp_globals.addr_wq_lock);
 	if (val == 0 && sp->do_auto_asconf) {
 		list_del(&sp->auto_asconf_list);
 		sp->do_auto_asconf = 0;
@@ -3500,6 +3503,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
 		    &sctp_auto_asconf_splist);
 		sp->do_auto_asconf = 1;
 	}
+	spin_unlock_bh(&sctp_globals.addr_wq_lock);
 	return 0;
 }
 
@@ -3935,18 +3939,28 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 	local_bh_disable();
 	percpu_counter_inc(&sctp_sockets_allocated);
 	sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+
+	/* Nothing can fail after this block, otherwise
+	 * sctp_destroy_sock() will be called without addr_wq_lock held
+	 */
 	if (sctp_default_auto_asconf) {
+		spin_lock(&sctp_globals.addr_wq_lock);
 		list_add_tail(&sp->auto_asconf_list,
 		    &sctp_auto_asconf_splist);
 		sp->do_auto_asconf = 1;
-	} else
+		spin_unlock(&sctp_globals.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
+ * sctp_globals.addr_wq_lock held if sp->do_auto_asconf is true
+ */
 SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
 {
 	struct sctp_sock *sp;
@@ -6746,6 +6760,19 @@ 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.
  */
@@ -6760,7 +6787,6 @@ 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.
@@ -6768,12 +6794,7 @@ 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.
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 31def68..617b955 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -60,7 +60,7 @@ static void xprt_free_allocation(struct rpc_rqst *req)
 
 	dprintk("RPC:        free allocations for req= %p\n", req);
 	BUG_ON(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
-	xbufp = &req->rq_private_buf;
+	xbufp = &req->rq_rcv_buf;
 	free_page((unsigned long)xbufp->head[0].iov_base);
 	xbufp = &req->rq_snd_buf;
 	free_page((unsigned long)xbufp->head[0].iov_base);
diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c
index 4fe9d19..80460d2 100644
--- a/sound/soc/codecs/wm8737.c
+++ b/sound/soc/codecs/wm8737.c
@@ -484,7 +484,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
 
 			/* Fast VMID ramp at 2*2.5k */
 			snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-					    WM8737_VMIDSEL_MASK, 0x4);
+					    WM8737_VMIDSEL_MASK,
+					    2 << WM8737_VMIDSEL_SHIFT);
 
 			/* Bring VMID up */
 			snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
@@ -498,7 +499,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
 
 		/* VMID at 2*300k */
 		snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-				    WM8737_VMIDSEL_MASK, 2);
+				    WM8737_VMIDSEL_MASK,
+				    1 << WM8737_VMIDSEL_SHIFT);
 
 		break;
 
diff --git a/sound/soc/codecs/wm8903.h b/sound/soc/codecs/wm8903.h
index db94931..0bb4a64 100644
--- a/sound/soc/codecs/wm8903.h
+++ b/sound/soc/codecs/wm8903.h
@@ -172,7 +172,7 @@ extern int wm8903_mic_detect(struct snd_soc_codec *codec,
 #define WM8903_VMID_BUF_ENA_WIDTH                    1  /* VMID_BUF_ENA */
 
 #define WM8903_VMID_RES_50K                          2
-#define WM8903_VMID_RES_250K                         3
+#define WM8903_VMID_RES_250K                         4
 #define WM8903_VMID_RES_5K                           6
 
 /*
diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c
index 4696f66..07b78a9 100644
--- a/sound/soc/codecs/wm8955.c
+++ b/sound/soc/codecs/wm8955.c
@@ -298,7 +298,7 @@ static int wm8955_configure_clocking(struct snd_soc_codec *codec)
 		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
 				    WM8955_K_17_9_MASK,
 				    (pll.k >> 9) & WM8955_K_17_9_MASK);
-		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
+		snd_soc_update_bits(codec, WM8955_PLL_CONTROL_3,
 				    WM8955_K_8_0_MASK,
 				    pll.k & WM8955_K_8_0_MASK);
 		if (pll.k)
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index ed986e6..bd3c6ef 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -183,7 +183,7 @@ SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 
-SOC_ENUM("DAC Polarity", wm8960_enum[2]),
+SOC_ENUM("DAC Polarity", wm8960_enum[1]),
 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 		    wm8960_get_deemph, wm8960_put_deemph),
 

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Geert Uytterhoeven]

On Tue, Oct 20, 2015 at 10:23 AM, Zefan Li <lizefan@huawei.com> wrote:
> On 2015/10/20 15:05, Geert Uytterhoeven wrote:
>> On Tue, Oct 20, 2015 at 4:17 AM, Guenter Roeck <linux@roeck-us.net> wrote:
>>> On 10/19/2015 05:47 PM, lizf@kernel.org wrote:
>>>> From: Zefan Li <lizefan@huawei.com>
>>>>
>>>> This is the start of the stable review cycle for the 3.4.110 release.
>>>> There are 65 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.
>>>>
>>>
>>> Build results:
>>>          total: 97 pass: 96 fail: 1
>>> Failed builds:
>>>          m68k:sun3_defconfig
>>>
>>> Qemu test results:
>>>          total: 63 pass: 63 fail: 0
>>>
>>> Build failure is due to inconsistent kallsyms data when building
>>> m68k:sun3_defconfig.
>>>  From the build log:
>>>
>>> Inconsistent kallsyms data
>>> This is a bug - please report about it
>>> Try make KALLSYMS_EXTRA_PASS=1 as a workaround
>>> Makefile:922: recipe for target 'vmlinux' failed
>>>
>>> Bisect says that the problem is caused by "vfs: Test for and handle paths
>>> that are unreachable from  their mnt_root", and reverting that patch
>>>  fixes the problem. No idea what is going on. Copying Eric and Geert.
>
> This is odd...

sun3_defconfig builds fine for me with gcc-4.1.2 20061115 (prerelease)
(Ubuntu 4.1.1-21) and with gcc-4.9.0 (kernel.org crosstool).

>> The posted patch is whitespace-damaged. Is there a git tree I can fetch
>> from?
>
> Oops.
>
> The patch is attached. And you can also fetch thost changes from

Thanks, that one applied cleanly.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Guenter Roeck]

On 10/20/2015 01:59 AM, Geert Uytterhoeven wrote:
> On Tue, Oct 20, 2015 at 10:23 AM, Zefan Li <lizefan@huawei.com> wrote:
>> On 2015/10/20 15:05, Geert Uytterhoeven wrote:
>>> On Tue, Oct 20, 2015 at 4:17 AM, Guenter Roeck <linux@roeck-us.net> wrote:
>>>> On 10/19/2015 05:47 PM, lizf@kernel.org wrote:
>>>>> From: Zefan Li <lizefan@huawei.com>
>>>>>
>>>>> This is the start of the stable review cycle for the 3.4.110 release.
>>>>> There are 65 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.
>>>>>
>>>>
>>>> Build results:
>>>>           total: 97 pass: 96 fail: 1
>>>> Failed builds:
>>>>           m68k:sun3_defconfig
>>>>
>>>> Qemu test results:
>>>>           total: 63 pass: 63 fail: 0
>>>>
>>>> Build failure is due to inconsistent kallsyms data when building
>>>> m68k:sun3_defconfig.
>>>>   From the build log:
>>>>
>>>> Inconsistent kallsyms data
>>>> This is a bug - please report about it
>>>> Try make KALLSYMS_EXTRA_PASS=1 as a workaround
>>>> Makefile:922: recipe for target 'vmlinux' failed
>>>>
>>>> Bisect says that the problem is caused by "vfs: Test for and handle paths
>>>> that are unreachable from  their mnt_root", and reverting that patch
>>>>   fixes the problem. No idea what is going on. Copying Eric and Geert.
>>
>> This is odd...
>
> sun3_defconfig builds fine for me with gcc-4.1.2 20061115 (prerelease)
> (Ubuntu 4.1.1-21) and with gcc-4.9.0 (kernel.org crosstool).
>

I used 4.6.3 from kernel.org crosstool.

Ok, time to update my toolchains.

Thanks,
Guenter

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Guenter Roeck]

On 10/20/2015 01:59 AM, Geert Uytterhoeven wrote:
> On Tue, Oct 20, 2015 at 10:23 AM, Zefan Li <lizefan@huawei.com> wrote:
>> On 2015/10/20 15:05, Geert Uytterhoeven wrote:
>>> On Tue, Oct 20, 2015 at 4:17 AM, Guenter Roeck <linux@roeck-us.net> wrote:
>>>> On 10/19/2015 05:47 PM, lizf@kernel.org wrote:
>>>>> From: Zefan Li <lizefan@huawei.com>
>>>>>
>>>>> This is the start of the stable review cycle for the 3.4.110 release.
>>>>> There are 65 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.
>>>>>
>>>>
>>>> Build results:
>>>>           total: 97 pass: 96 fail: 1
>>>> Failed builds:
>>>>           m68k:sun3_defconfig
>>>>
>>>> Qemu test results:
>>>>           total: 63 pass: 63 fail: 0
>>>>
>>>> Build failure is due to inconsistent kallsyms data when building
>>>> m68k:sun3_defconfig.
>>>>   From the build log:
>>>>
>>>> Inconsistent kallsyms data
>>>> This is a bug - please report about it
>>>> Try make KALLSYMS_EXTRA_PASS=1 as a workaround
>>>> Makefile:922: recipe for target 'vmlinux' failed
>>>>
>>>> Bisect says that the problem is caused by "vfs: Test for and handle paths
>>>> that are unreachable from  their mnt_root", and reverting that patch
>>>>   fixes the problem. No idea what is going on. Copying Eric and Geert.
>>
>> This is odd...
>
> sun3_defconfig builds fine for me with gcc-4.1.2 20061115 (prerelease)
> (Ubuntu 4.1.1-21) and with gcc-4.9.0 (kernel.org crosstool).
>
Passes for me as well with 4.9.0 from kernel.org crosstool.

Looks like a false alarm. Sorry for the noise.

Guenter

RE: [PATCH 3.4 52/65] ACPICA: Tables: Fix an issue that FACS initialization is performed twice

[Moore, Robert]

> -----Original Message-----
> From: lizf@kernel.org [mailto:lizf@kernel.org]
> Sent: Monday, October 19, 2015 5:48 PM
> To: stable@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org; Zheng, Lv; Moore, Robert; Wysocki,
> Rafael J; Zefan Li
> Subject: [PATCH 3.4 52/65] ACPICA: Tables: Fix an issue that FACS
> initialization is performed twice
> 
> From: Lv Zheng <lv.zheng@intel.com>
> 
> 3.4.110-rc1 review patch.  If anyone has any objections, please let me
> know.
> 
> ------------------
> 
> 
> commit c04be18448355441a0c424362df65b6422e27bda upstream.
> 
> ACPICA commit 90f5332a15e9d9ba83831ca700b2b9f708274658
> 
> This patch adds a new FACS initialization flag for acpi_tb_initialize().
> acpi_enable_subsystem() might be invoked several times in OS bootup
> process, and we don't want FACS initialization to be invoked twice. Lv
> Zheng.
> 

Isn't calling acpi_enable_subsystem more than once essentially an OS bug?






> Link: https://github.com/acpica/acpica/commit/90f5332a
> Signed-off-by: Lv Zheng <lv.zheng@intel.com>
> Signed-off-by: Bob Moore <robert.moore@intel.com>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> [lizf: Backported to 3.4: adjust filename]
> Signed-off-by: Zefan Li <lizefan@huawei.com>
> ---
>  drivers/acpi/acpica/utxface.c | 10 ++++++----
>  include/acpi/actypes.h        |  1 +
>  2 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
> index afa94f5..0985ab7 100644
> --- a/drivers/acpi/acpica/utxface.c
> +++ b/drivers/acpi/acpica/utxface.c
> @@ -166,10 +166,12 @@ acpi_status acpi_enable_subsystem(u32 flags)
>  	 * Obtain a permanent mapping for the FACS. This is required for the
>  	 * Global Lock and the Firmware Waking Vector
>  	 */
> -	status = acpi_tb_initialize_facs();
> -	if (ACPI_FAILURE(status)) {
> -		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
> -		return_ACPI_STATUS(status);
> +	if (!(flags & ACPI_NO_FACS_INIT)) {
> +		status = acpi_tb_initialize_facs();
> +		if (ACPI_FAILURE(status)) {
> +			ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
> +			return_ACPI_STATUS(status);
> +		}
>  	}
>  #endif				/* !ACPI_REDUCED_HARDWARE */
> 
> diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index
> 6d52429..0460073 100644
> --- a/include/acpi/actypes.h
> +++ b/include/acpi/actypes.h
> @@ -495,6 +495,7 @@ typedef u64 acpi_integer;
>  #define ACPI_NO_ACPI_ENABLE             0x10
>  #define ACPI_NO_DEVICE_INIT             0x20
>  #define ACPI_NO_OBJECT_INIT             0x40
> +#define ACPI_NO_FACS_INIT               0x80
> 
>  /*
>   * Initialization state
> --
> 1.9.1

RE: [PATCH 3.4 52/65] ACPICA: Tables: Fix an issue that FACS initialization is performed twice

[Zheng, Lv]

Hi,

> From: Moore, Robert
> Sent: Tuesday, October 20, 2015 9:35 PM
> 
> 
> 
> > -----Original Message-----
> > From: lizf@kernel.org [mailto:lizf@kernel.org]
> > Sent: Monday, October 19, 2015 5:48 PM
> > To: stable@vger.kernel.org
> > Cc: linux-kernel@vger.kernel.org; Zheng, Lv; Moore, Robert; Wysocki,
> > Rafael J; Zefan Li
> > Subject: [PATCH 3.4 52/65] ACPICA: Tables: Fix an issue that FACS
> > initialization is performed twice
> >
> > From: Lv Zheng <lv.zheng@intel.com>
> >
> > 3.4.110-rc1 review patch.  If anyone has any objections, please let me
> > know.
> >
> > ------------------
> >
> >
> > commit c04be18448355441a0c424362df65b6422e27bda upstream.
> >
> > ACPICA commit 90f5332a15e9d9ba83831ca700b2b9f708274658
> >
> > This patch adds a new FACS initialization flag for acpi_tb_initialize().
> > acpi_enable_subsystem() might be invoked several times in OS bootup
> > process, and we don't want FACS initialization to be invoked twice. Lv
> > Zheng.
> >
> 
> Isn't calling acpi_enable_subsystem more than once essentially an OS bug?
> 
> 

I'm not sure if this is an OS bug.
And don't know the history of this function.

IMO, acpi_enable_subsystem() contains several initialization steps.
And the calling order of such steps might be OSPM specific, that's why so many flags are needed for acpi_enable_subsystem().
Then invoking acpi_enable_subsystem() twice at different OS boot stage (early or late) might not be a problem.

The patch is a different story, it just fixes an issue that one of the step is called twice in Linux because ACPICA hasn't a flag around acpi_tb_initialize_facs().

Thanks and best regards
-Lv


> 
> 
> 
> 
> > Link: https://github.com/acpica/acpica/commit/90f5332a
> > Signed-off-by: Lv Zheng <lv.zheng@intel.com>
> > Signed-off-by: Bob Moore <robert.moore@intel.com>
> > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> > [lizf: Backported to 3.4: adjust filename]
> > Signed-off-by: Zefan Li <lizefan@huawei.com>
> > ---
> >  drivers/acpi/acpica/utxface.c | 10 ++++++----
> >  include/acpi/actypes.h        |  1 +
> >  2 files changed, 7 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
> > index afa94f5..0985ab7 100644
> > --- a/drivers/acpi/acpica/utxface.c
> > +++ b/drivers/acpi/acpica/utxface.c
> > @@ -166,10 +166,12 @@ acpi_status acpi_enable_subsystem(u32 flags)
> >  	 * Obtain a permanent mapping for the FACS. This is required for the
> >  	 * Global Lock and the Firmware Waking Vector
> >  	 */
> > -	status = acpi_tb_initialize_facs();
> > -	if (ACPI_FAILURE(status)) {
> > -		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
> > -		return_ACPI_STATUS(status);
> > +	if (!(flags & ACPI_NO_FACS_INIT)) {
> > +		status = acpi_tb_initialize_facs();
> > +		if (ACPI_FAILURE(status)) {
> > +			ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
> > +			return_ACPI_STATUS(status);
> > +		}
> >  	}
> >  #endif				/* !ACPI_REDUCED_HARDWARE */
> >
> > diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index
> > 6d52429..0460073 100644
> > --- a/include/acpi/actypes.h
> > +++ b/include/acpi/actypes.h
> > @@ -495,6 +495,7 @@ typedef u64 acpi_integer;
> >  #define ACPI_NO_ACPI_ENABLE             0x10
> >  #define ACPI_NO_DEVICE_INIT             0x20
> >  #define ACPI_NO_OBJECT_INIT             0x40
> > +#define ACPI_NO_FACS_INIT               0x80
> >
> >  /*
> >   * Initialization state
> > --
> > 1.9.1

Re: [PATCH 3.4 17/65] fixing infinite OPEN loop in 4.0 stateid recovery

[Zefan Li]

On 2015/10/20 21:25, Kornievskaia, Olga wrote:
> That patch introduced a different problem that was fixed by commit a41cbe86df3afbc82311a1640e20858c0cd7e065

I'll queue it up for 3.4.y. Thanks!

> (NFS4CLNT_RECLAIM_NOGRACE was suppose to be NFS_STATE_RECLAIM_NOGRACE)
>
> Re: Failing to send a CLOSE if file is opened WRONLY and ... <https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CB0QFjAAahUKEwjEj9bLktHIAhXMpx4KHZVDC6o&url=http://www.spinics.net/lists/linux-nfs/msg53705.html&usg=AFQjCNEIHLOoLJV6YmJh0G_O5Jj9OcrS8g&sig2=Y76g-bzz-2SLr9OF5xNjvw&bvm=bv.105454873,d.cWw>
>
>
>> On Oct 19, 2015, at 8:47 PM, lizf@kernel.org <mailto:lizf@kernel.org> wrote:
>>
>> From: Olga Kornievskaia <kolga@netapp.com <mailto:kolga@netapp.com>>
>>
>> 3.4.110-rc1 review patch.  If anyone has any objections, please let me know.
>>
>> ------------------
>>
>>
>> commit e8d975e73e5fa05f983fbf2723120edcf68e0b38 upstream.
>>
>> Problem: When an operation like WRITE receives a BAD_STATEID, even though
>> recovery code clears the RECLAIM_NOGRACE recovery flag before recovering
>> the open state, because of clearing delegation state for the associated
>> inode, nfs_inode_find_state_and_recover() gets called and it makes the
>> same state with RECLAIM_NOGRACE flag again. As a results, when we restart
>> looking over the open states, we end up in the infinite loop instead of
>> breaking out in the next test of state flags.
>>
>> Solution: unset the RECLAIM_NOGRACE set because of
>> calling of nfs_inode_find_state_and_recover() after returning from calling
>> recover_open() function.
>>
>> Signed-off-by: Olga Kornievskaia <kolga@netapp.com <mailto:kolga@netapp.com>>
>> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com <mailto:trond.myklebust@primarydata.com>>
>> [lizf: Backported to 3.4: adjust context]
>> Signed-off-by: Zefan Li <lizefan@huawei.com <mailto:lizefan@huawei.com>>

Re: [PATCH 3.4 00/65] 3.4.110-rc1 review

[Zefan Li]

>>>>> Build results:
>>>>>           total: 97 pass: 96 fail: 1
>>>>> Failed builds:
>>>>>           m68k:sun3_defconfig
>>>>>
>>>>> Qemu test results:
>>>>>           total: 63 pass: 63 fail: 0
>>>>>
>>>>> Build failure is due to inconsistent kallsyms data when building
>>>>> m68k:sun3_defconfig.
>>>>>   From the build log:
>>>>>
>>>>> Inconsistent kallsyms data
>>>>> This is a bug - please report about it
>>>>> Try make KALLSYMS_EXTRA_PASS=1 as a workaround
>>>>> Makefile:922: recipe for target 'vmlinux' failed
>>>>>
>>>>> Bisect says that the problem is caused by "vfs: Test for and handle paths
>>>>> that are unreachable from  their mnt_root", and reverting that patch
>>>>>   fixes the problem. No idea what is going on. Copying Eric and Geert.
>>>
>>> This is odd...
>>
>> sun3_defconfig builds fine for me with gcc-4.1.2 20061115 (prerelease)
>> (Ubuntu 4.1.1-21) and with gcc-4.9.0 (kernel.org crosstool).
>>
> Passes for me as well with 4.9.0 from kernel.org crosstool.
>

Thanks for testing!