[Qemu-devel] [PULL 0/5] hw: Contain drive, serial, parallel, net misuse

[Qemu-devel] [PULL 0/5] hw: Contain drive, serial, parallel, net misuse

[Markus Armbruster]

Drives defined with if!=none, character devices defined with -serial
and -parallel, network devices defined with -net nic are all for board
initialization to wire up.  Board code calls drive_get() or similar to
find them, and creates devices with their qdev properties set
accordingly.

Except a few devices go on fishing expeditions on their own instead of
exposing a drive property for board code to set.

We can't fix this in time for the release, so do the next best thing:
contain the mistakes as far as possible so they don't become ABI:

* Mark them all with suitable FIXME comments [PATCH 1-3].

* sdhci-pci is new, set cannot_instantiate_with_device_add_yet to make
  it unavailable with -device [PATCH 4].

* A few more aren't currently available with -device, set
  cannot_instantiate_with_device_add_yet to ensure they stay
  unavailable [PATCH 5].

* Left alone: m25p80-generic and its derivatives[*], ssi-sd, pc87312.
  I suspect these can't be used sanely with -device / device_add, and
  cannot_instantiate_with_device_add_yet for them would be just fine,
  but I feel we're too close to the release to argue this now.

The following changes since commit b8a86c4ac4d04c106ba38fbd707041cba334a155:

  Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging (2015-04-01 11:31:31 +0100)

are available in the git repository at:


  git://repo.or.cz/qemu/armbru.git tags/pull-hw-2015-04-01

for you to fetch changes up to 7157bc9cf431e1debd0afb8e9cb6ab597ef93828:

  sysbus: Make devices picking up backends unavailable with -device (2015-04-01 16:08:53 +0200)

----------------------------------------------------------------
hw: Contain drive, serial, parallel, net misuse

----------------------------------------------------------------
Markus Armbruster (5):
  hw: Mark devices picking up block backends actively FIXME
  hw: Mark devices picking up char backends actively FIXME
  hw: Mark device misusing nd_table[] FIXME
  sdhci: Make device "sdhci-pci" unavailable with -device
  sysbus: Make devices picking up backends unavailable with -device

 hw/arm/allwinner-a10.c    | 2 ++
 hw/arm/spitz.c            | 3 +++
 hw/block/m25p80.c         | 1 +
 hw/char/cadence_uart.c    | 3 +++
 hw/char/digic-uart.c      | 3 +++
 hw/char/etraxfs_ser.c     | 3 +++
 hw/char/lm32_juart.c      | 3 +++
 hw/char/lm32_uart.c       | 3 +++
 hw/char/milkymist-uart.c  | 3 +++
 hw/char/pl011.c           | 3 +++
 hw/char/stm32f2xx_usart.c | 3 +++
 hw/char/xilinx_uartlite.c | 3 +++
 hw/isa/pc87312.c          | 4 ++++
 hw/sd/milkymist-memcard.c | 3 +++
 hw/sd/pl181.c             | 3 +++
 hw/sd/sdhci.c             | 5 +++++
 hw/sd/ssi-sd.c            | 1 +
 17 files changed, 49 insertions(+)

-- 
1.9.3

[Qemu-devel] [PULL 1/5] hw: Mark devices picking up block backends actively FIXME

[Markus Armbruster]

Drives defined with if!=none are for board initialization to wire up.
Board code calls drive_get() or similar to find them, and creates
devices with their qdev drive properties set accordingly.

Except a few devices go on a fishing expedition for a suitable backend
instead of exposing a drive property for board code to set: they call
driver_get() or drive_get_next() in their realize() or init() method
to implicitly connect to the "next" backend with a certain interface
type.

Picking up backends that way works when the devices are created by
board code.  But it's inappropriate for -device or device_add.  Not
only is this inconsistent with how the other block device models work
(they connect to a backend explicitly identified by a "drive"
property), it breaks when the "next" backend has been picked up by the
board already.

Example:

    $ qemu-system-arm -S -M connex -pflash flash.img -device ssi-sd
    Aborted (core dumped)

Mark them with suitable FIXME comments.

Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: "Andreas Färber" <andreas.faerber@web.de>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/arm/spitz.c            | 1 +
 hw/block/m25p80.c         | 1 +
 hw/isa/pc87312.c          | 2 ++
 hw/sd/milkymist-memcard.c | 1 +
 hw/sd/pl181.c             | 1 +
 hw/sd/sdhci.c             | 1 +
 hw/sd/ssi-sd.c            | 1 +
 7 files changed, 8 insertions(+)

diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c
index a16831c..da02932 100644
--- a/hw/arm/spitz.c
+++ b/hw/arm/spitz.c
@@ -168,6 +168,7 @@ static int sl_nand_init(SysBusDevice *dev)
     DriveInfo *nand;
 
     s->ctl = 0;
+    /* FIXME use a qdev drive property instead of drive_get() */
     nand = drive_get(IF_MTD, 0, 0);
     s->nand = nand_init(nand ? blk_by_legacy_dinfo(nand) : NULL,
                         s->manf_id, s->chip_id);
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index ff1106b..afe243b 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -623,6 +623,7 @@ static int m25p80_init(SSISlave *ss)
     s->dirty_page = -1;
     s->storage = blk_blockalign(s->blk, s->size);
 
+    /* FIXME use a qdev drive property instead of drive_get_next() */
     dinfo = drive_get_next(IF_MTD);
 
     if (dinfo) {
diff --git a/hw/isa/pc87312.c b/hw/isa/pc87312.c
index 40a1106..2849e8d 100644
--- a/hw/isa/pc87312.c
+++ b/hw/isa/pc87312.c
@@ -319,11 +319,13 @@ static void pc87312_realize(DeviceState *dev, Error **errp)
         d = DEVICE(isa);
         qdev_prop_set_uint32(d, "iobase", get_fdc_iobase(s));
         qdev_prop_set_uint32(d, "irq", 6);
+        /* FIXME use a qdev drive property instead of drive_get() */
         drive = drive_get(IF_FLOPPY, 0, 0);
         if (drive != NULL) {
             qdev_prop_set_drive_nofail(d, "driveA",
                                        blk_by_legacy_dinfo(drive));
         }
+        /* FIXME use a qdev drive property instead of drive_get() */
         drive = drive_get(IF_FLOPPY, 0, 1);
         if (drive != NULL) {
             qdev_prop_set_drive_nofail(d, "driveB",
diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c
index 9661eaf..0cc53d9 100644
--- a/hw/sd/milkymist-memcard.c
+++ b/hw/sd/milkymist-memcard.c
@@ -255,6 +255,7 @@ static int milkymist_memcard_init(SysBusDevice *dev)
     DriveInfo *dinfo;
     BlockBackend *blk;
 
+    /* FIXME use a qdev drive property instead of drive_get_next() */
     dinfo = drive_get_next(IF_SD);
     blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
     s->card = sd_init(blk, false);
diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c
index e704b6e..bf37da6 100644
--- a/hw/sd/pl181.c
+++ b/hw/sd/pl181.c
@@ -490,6 +490,7 @@ static int pl181_init(SysBusDevice *sbd)
     sysbus_init_irq(sbd, &s->irq[0]);
     sysbus_init_irq(sbd, &s->irq[1]);
     qdev_init_gpio_out(dev, s->cardstatus, 2);
+    /* FIXME use a qdev drive property instead of drive_get_next() */
     dinfo = drive_get_next(IF_SD);
     s->card = sd_init(dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, false);
     if (s->card == NULL) {
diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index 27b914a..f056c52 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -1146,6 +1146,7 @@ static void sdhci_initfn(SDHCIState *s)
 {
     DriveInfo *di;
 
+    /* FIXME use a qdev drive property instead of drive_get_next() */
     di = drive_get_next(IF_SD);
     s->card = sd_init(di ? blk_by_legacy_dinfo(di) : NULL, false);
     if (s->card == NULL) {
diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
index a71fbca..e4b2d4f 100644
--- a/hw/sd/ssi-sd.c
+++ b/hw/sd/ssi-sd.c
@@ -255,6 +255,7 @@ static int ssi_sd_init(SSISlave *d)
     DriveInfo *dinfo;
 
     s->mode = SSI_SD_CMD;
+    /* FIXME use a qdev drive property instead of drive_get_next() */
     dinfo = drive_get_next(IF_SD);
     s->sd = sd_init(dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, true);
     if (s->sd == NULL) {
-- 
1.9.3

[Qemu-devel] [PULL 2/5] hw: Mark devices picking up char backends actively FIXME

[Markus Armbruster]

Character devices defined with -serial and -parallel are for board
initialization to wire up.  Board code examines serial_hds[] and
parallel_hds[] to find them, and creates devices with their qdev
chardev properties set accordingly.

Except a few devices go on a fishing expedition for a suitable backend
instead of exposing a chardev property for board code to set: they use
serial_hds[] (often via qemu_char_get_next_serial()) or parallel_hds[]
in their realize() or init() method to connect to a backend.

Picking up backends that way works when the devices are created by
board code.  But it's inappropriate for -device or device_add.  Not
only is it inconsistent with how the other characrer device models
work (they connect to a backend explicitly identified by a "chardev"
property), it breaks when the backend has been picked up by the board
or a previous -device / device_add already.

Example:

    $ qemu-system-ppc64 -M bamboo -S -device i82378 -device pc87312 -device pc87312
    qemu-system-ppc64: -device pc87312: Property 'isa-parallel.chardev' can't take value 'parallel0', it's in use

Mark them with suitable FIXME comments.

Cc: Li Guang <lig.fnst@cn.fujitsu.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: "Andreas Färber" <andreas.faerber@web.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/arm/allwinner-a10.c    | 1 +
 hw/char/cadence_uart.c    | 1 +
 hw/char/digic-uart.c      | 1 +
 hw/char/etraxfs_ser.c     | 1 +
 hw/char/lm32_juart.c      | 1 +
 hw/char/lm32_uart.c       | 1 +
 hw/char/milkymist-uart.c  | 1 +
 hw/char/pl011.c           | 1 +
 hw/char/stm32f2xx_usart.c | 1 +
 hw/char/xilinx_uartlite.c | 1 +
 hw/isa/pc87312.c          | 2 ++
 11 files changed, 12 insertions(+)

diff --git a/hw/arm/allwinner-a10.c b/hw/arm/allwinner-a10.c
index 01206f2..86965a7 100644
--- a/hw/arm/allwinner-a10.c
+++ b/hw/arm/allwinner-a10.c
@@ -92,6 +92,7 @@ static void aw_a10_realize(DeviceState *dev, Error **errp)
     sysbus_mmio_map(sysbusdev, 0, AW_A10_EMAC_BASE);
     sysbus_connect_irq(sysbusdev, 0, s->irq[55]);
 
+    /* FIXME use a qdev chardev prop instead of serial_hds[] */
     serial_mm_init(get_system_memory(), AW_A10_UART0_REG_BASE, 2, s->irq[1],
                    115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
 }
diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c
index a5dc2a4..4f38f0c 100644
--- a/hw/char/cadence_uart.c
+++ b/hw/char/cadence_uart.c
@@ -483,6 +483,7 @@ static void cadence_uart_realize(DeviceState *dev, Error **errp)
     s->fifo_trigger_handle = timer_new_ns(QEMU_CLOCK_VIRTUAL,
                                           fifo_trigger_update, s);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
 
     if (s->chr) {
diff --git a/hw/char/digic-uart.c b/hw/char/digic-uart.c
index 8abe944..f272491 100644
--- a/hw/char/digic-uart.c
+++ b/hw/char/digic-uart.c
@@ -143,6 +143,7 @@ static void digic_uart_realize(DeviceState *dev, Error **errp)
 {
     DigicUartState *s = DIGIC_UART(dev);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
     if (s->chr) {
         qemu_chr_add_handlers(s->chr, uart_can_rx, uart_rx, uart_event, s);
diff --git a/hw/char/etraxfs_ser.c b/hw/char/etraxfs_ser.c
index 460094e..3381b86 100644
--- a/hw/char/etraxfs_ser.c
+++ b/hw/char/etraxfs_ser.c
@@ -219,6 +219,7 @@ static int etraxfs_ser_init(SysBusDevice *dev)
                           "etraxfs-serial", R_MAX * 4);
     sysbus_init_mmio(dev, &s->mmio);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
     if (s->chr) {
         qemu_chr_add_handlers(s->chr,
diff --git a/hw/char/lm32_juart.c b/hw/char/lm32_juart.c
index 628a86f..03285da 100644
--- a/hw/char/lm32_juart.c
+++ b/hw/char/lm32_juart.c
@@ -117,6 +117,7 @@ static int lm32_juart_init(SysBusDevice *dev)
 {
     LM32JuartState *s = LM32_JUART(dev);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
     if (s->chr) {
         qemu_chr_add_handlers(s->chr, juart_can_rx, juart_rx, juart_event, s);
diff --git a/hw/char/lm32_uart.c b/hw/char/lm32_uart.c
index 4f20966..39cad49 100644
--- a/hw/char/lm32_uart.c
+++ b/hw/char/lm32_uart.c
@@ -258,6 +258,7 @@ static int lm32_uart_init(SysBusDevice *dev)
                           "uart", R_MAX * 4);
     sysbus_init_mmio(dev, &s->iomem);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
     if (s->chr) {
         qemu_chr_add_handlers(s->chr, uart_can_rx, uart_rx, uart_event, s);
diff --git a/hw/char/milkymist-uart.c b/hw/char/milkymist-uart.c
index d05b825..b79ea09 100644
--- a/hw/char/milkymist-uart.c
+++ b/hw/char/milkymist-uart.c
@@ -199,6 +199,7 @@ static void milkymist_uart_realize(DeviceState *dev, Error **errp)
 {
     MilkymistUartState *s = MILKYMIST_UART(dev);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
     if (s->chr) {
         qemu_chr_add_handlers(s->chr, uart_can_rx, uart_rx, uart_event, s);
diff --git a/hw/char/pl011.c b/hw/char/pl011.c
index 0a45115..d1cf00f 100644
--- a/hw/char/pl011.c
+++ b/hw/char/pl011.c
@@ -293,6 +293,7 @@ static void pl011_realize(DeviceState *dev, Error **errp)
 {
     PL011State *s = PL011(dev);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
 
     if (s->chr) {
diff --git a/hw/char/stm32f2xx_usart.c b/hw/char/stm32f2xx_usart.c
index 260b053..669c4e3 100644
--- a/hw/char/stm32f2xx_usart.c
+++ b/hw/char/stm32f2xx_usart.c
@@ -198,6 +198,7 @@ static void stm32f2xx_usart_init(Object *obj)
                           TYPE_STM32F2XX_USART, 0x2000);
     sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
 
     if (s->chr) {
diff --git a/hw/char/xilinx_uartlite.c b/hw/char/xilinx_uartlite.c
index f7c3cae..cb54684 100644
--- a/hw/char/xilinx_uartlite.c
+++ b/hw/char/xilinx_uartlite.c
@@ -205,6 +205,7 @@ static void xilinx_uartlite_realize(DeviceState *dev, Error **errp)
 {
     XilinxUARTLite *s = XILINX_UARTLITE(dev);
 
+    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
     s->chr = qemu_char_get_next_serial();
     if (s->chr)
         qemu_chr_add_handlers(s->chr, uart_can_rx, uart_rx, uart_event, s);
diff --git a/hw/isa/pc87312.c b/hw/isa/pc87312.c
index 2849e8d..3b1fcec 100644
--- a/hw/isa/pc87312.c
+++ b/hw/isa/pc87312.c
@@ -278,6 +278,7 @@ static void pc87312_realize(DeviceState *dev, Error **errp)
     pc87312_hard_reset(s);
 
     if (is_parallel_enabled(s)) {
+        /* FIXME use a qdev chardev prop instead of parallel_hds[] */
         chr = parallel_hds[0];
         if (chr == NULL) {
             chr = qemu_chr_new("par0", "null", NULL);
@@ -296,6 +297,7 @@ static void pc87312_realize(DeviceState *dev, Error **errp)
 
     for (i = 0; i < 2; i++) {
         if (is_uart_enabled(s, i)) {
+            /* FIXME use a qdev chardev prop instead of serial_hds[] */
             chr = serial_hds[i];
             if (chr == NULL) {
                 snprintf(name, sizeof(name), "ser%d", i);
-- 
1.9.3

[Qemu-devel] [PULL 3/5] hw: Mark device misusing nd_table[] FIXME

[Markus Armbruster]

NICs defined with -net nic are for board initialization to wire up.
Board code examines nd_table[] to find them, and creates devices with
their qdev NIC properties set accordingly.

Except "allwinner-a10" goes on a fishing expedition for NIC
configuration instead of exposing the usual NIC properties for board
code to set: it uses nd_table[0] in its instance_init() method.

Picking up the first -net nic option's configuration that way works
when the device is created by board code.  But it's inappropriate for
-device and device_add.  Not only is it inconsistent with how the
other block device models work (they get their configuration from
properties "mac", "vlan", "netdev"), it breaks when nd_table[0] has
been picked up by the board or a previous -device / device_add
already.

Example:

    $ qemu-system-arm -S -M cubieboard -device allwinner-a10
    qemu-system-arm: -device allwinner-a10: Property 'allwinner-emac.netdev' can't take value 'hub0port0', it's in use
    Aborted (core dumped)

It also breaks in other entertaining ways:

    $ qemu-system-arm -M highbank -device allwinner-a10
    qemu-system-arm: -device allwinner-a10: Unsupported NIC model: xgmac
    $ qemu-system-arm -M highbank -net nic,model=allwinner-emac -device allwinner-a10
    qemu-system-arm: Unsupported NIC model: allwinner-emac

Mark the mistake with a FIXME comment.

Cc: Li Guang <lig.fnst@cn.fujitsu.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/arm/allwinner-a10.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/arm/allwinner-a10.c b/hw/arm/allwinner-a10.c
index 86965a7..ff249af 100644
--- a/hw/arm/allwinner-a10.c
+++ b/hw/arm/allwinner-a10.c
@@ -34,6 +34,7 @@ static void aw_a10_init(Object *obj)
 
     object_initialize(&s->emac, sizeof(s->emac), TYPE_AW_EMAC);
     qdev_set_parent_bus(DEVICE(&s->emac), sysbus_get_default());
+    /* FIXME use qdev NIC properties instead of nd_table[] */
     if (nd_table[0].used) {
         qemu_check_nic_model(&nd_table[0], TYPE_AW_EMAC);
         qdev_set_nic_properties(DEVICE(&s->emac), &nd_table[0]);
-- 
1.9.3

[Qemu-devel] [PULL 4/5] sdhci: Make device "sdhci-pci" unavailable with -device

[Markus Armbruster]

Device models aren't supposed to go on fishing expeditions for
backends.  They should expose suitable properties for the user to set.
For onboard devices, board code sets them.

"sdhci-pci" picks up its block backend in its realize() method with
drive_get_next() instead.  Already marked FIXME.  See the commit that
added the FIXME for a more detailed explanation of what's wrong.

We can't fix this in time for the release, but since the device is new
in 2.3, we can set cannot_instantiate_with_device_add_yet to disable
it before this mistake becomes ABI, and we have to support command
lines like

    $ qemu -drive if=sd -drive if=sd,file=sd.img -device sdhci-pci -device sdhci-pci

forever.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/sd/sdhci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index f056c52..ab13505 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -1254,6 +1254,8 @@ static void sdhci_pci_class_init(ObjectClass *klass, void *data)
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     dc->vmsd = &sdhci_vmstate;
     dc->props = sdhci_properties;
+    /* Reason: realize() method uses drive_get_next() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo sdhci_pci_info = {
-- 
1.9.3

[Qemu-devel] [PULL 5/5] sysbus: Make devices picking up backends unavailable with -device

[Markus Armbruster]

Device models aren't supposed to go on fishing expeditions for
backends.  They should expose suitable properties for the user to set.
For onboard devices, board code sets them.

A number of sysbus devices pick up block backends in their init() /
instance_init() methods with drive_get_next() instead: sl-nand,
milkymist-memcard, pl181, generic-sdhci.

Likewise, a number of sysbus devices pick up character backends in
their init() / realize() methods with qemu_char_get_next_serial():
cadence_uart, digic-uart, etraxfs,serial, lm32-juart, lm32-uart,
milkymist-uart, pl011, stm32f2xx-usart, xlnx.xps-uartlite.

All these mistakes are already marked FIXME.  See the commit that
added these FIXMEs for a more detailed explanation of what's wrong.

Fortunately, only machines ppce500 and pseries-* support -device with
sysbus devices, and none of the devices above is supported with these
machines.

Set cannot_instantiate_with_device_add_yet to preserve our luck.

Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/arm/spitz.c            | 2 ++
 hw/char/cadence_uart.c    | 2 ++
 hw/char/digic-uart.c      | 2 ++
 hw/char/etraxfs_ser.c     | 2 ++
 hw/char/lm32_juart.c      | 2 ++
 hw/char/lm32_uart.c       | 2 ++
 hw/char/milkymist-uart.c  | 2 ++
 hw/char/pl011.c           | 2 ++
 hw/char/stm32f2xx_usart.c | 2 ++
 hw/char/xilinx_uartlite.c | 2 ++
 hw/sd/milkymist-memcard.c | 2 ++
 hw/sd/pl181.c             | 2 ++
 hw/sd/sdhci.c             | 2 ++
 13 files changed, 26 insertions(+)

diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c
index da02932..5bf032a 100644
--- a/hw/arm/spitz.c
+++ b/hw/arm/spitz.c
@@ -1036,6 +1036,8 @@ static void sl_nand_class_init(ObjectClass *klass, void *data)
     k->init = sl_nand_init;
     dc->vmsd = &vmstate_sl_nand_info;
     dc->props = sl_nand_properties;
+    /* Reason: init() method uses drive_get() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo sl_nand_info = {
diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c
index 4f38f0c..d145378 100644
--- a/hw/char/cadence_uart.c
+++ b/hw/char/cadence_uart.c
@@ -537,6 +537,8 @@ static void cadence_uart_class_init(ObjectClass *klass, void *data)
     dc->realize = cadence_uart_realize;
     dc->vmsd = &vmstate_cadence_uart;
     dc->reset = cadence_uart_reset;
+    /* Reason: realize() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo cadence_uart_info = {
diff --git a/hw/char/digic-uart.c b/hw/char/digic-uart.c
index f272491..6d44576 100644
--- a/hw/char/digic-uart.c
+++ b/hw/char/digic-uart.c
@@ -177,6 +177,8 @@ static void digic_uart_class_init(ObjectClass *klass, void *data)
     dc->realize = digic_uart_realize;
     dc->reset = digic_uart_reset;
     dc->vmsd = &vmstate_digic_uart;
+    /* Reason: realize() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo digic_uart_info = {
diff --git a/hw/char/etraxfs_ser.c b/hw/char/etraxfs_ser.c
index 3381b86..857c136 100644
--- a/hw/char/etraxfs_ser.c
+++ b/hw/char/etraxfs_ser.c
@@ -236,6 +236,8 @@ static void etraxfs_ser_class_init(ObjectClass *klass, void *data)
 
     k->init = etraxfs_ser_init;
     dc->reset = etraxfs_ser_reset;
+    /* Reason: init() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo etraxfs_ser_info = {
diff --git a/hw/char/lm32_juart.c b/hw/char/lm32_juart.c
index 03285da..62763f2 100644
--- a/hw/char/lm32_juart.c
+++ b/hw/char/lm32_juart.c
@@ -145,6 +145,8 @@ static void lm32_juart_class_init(ObjectClass *klass, void *data)
     k->init = lm32_juart_init;
     dc->reset = juart_reset;
     dc->vmsd = &vmstate_lm32_juart;
+    /* Reason: init() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo lm32_juart_info = {
diff --git a/hw/char/lm32_uart.c b/hw/char/lm32_uart.c
index 39cad49..837a46e 100644
--- a/hw/char/lm32_uart.c
+++ b/hw/char/lm32_uart.c
@@ -285,6 +285,8 @@ static void lm32_uart_class_init(ObjectClass *klass, void *data)
     k->init = lm32_uart_init;
     dc->reset = uart_reset;
     dc->vmsd = &vmstate_lm32_uart;
+    /* Reason: init() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo lm32_uart_info = {
diff --git a/hw/char/milkymist-uart.c b/hw/char/milkymist-uart.c
index b79ea09..9b89b7e 100644
--- a/hw/char/milkymist-uart.c
+++ b/hw/char/milkymist-uart.c
@@ -235,6 +235,8 @@ static void milkymist_uart_class_init(ObjectClass *klass, void *data)
     dc->realize = milkymist_uart_realize;
     dc->reset = milkymist_uart_reset;
     dc->vmsd = &vmstate_milkymist_uart;
+    /* Reason: realize() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo milkymist_uart_info = {
diff --git a/hw/char/pl011.c b/hw/char/pl011.c
index d1cf00f..eac6fac 100644
--- a/hw/char/pl011.c
+++ b/hw/char/pl011.c
@@ -308,6 +308,8 @@ static void pl011_class_init(ObjectClass *oc, void *data)
 
     dc->realize = pl011_realize;
     dc->vmsd = &vmstate_pl011;
+    /* Reason: realize() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo pl011_arm_info = {
diff --git a/hw/char/stm32f2xx_usart.c b/hw/char/stm32f2xx_usart.c
index 669c4e3..c9d3a1b 100644
--- a/hw/char/stm32f2xx_usart.c
+++ b/hw/char/stm32f2xx_usart.c
@@ -212,6 +212,8 @@ static void stm32f2xx_usart_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     dc->reset = stm32f2xx_usart_reset;
+    /* Reason: instance_init() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo stm32f2xx_usart_info = {
diff --git a/hw/char/xilinx_uartlite.c b/hw/char/xilinx_uartlite.c
index cb54684..ef883a8 100644
--- a/hw/char/xilinx_uartlite.c
+++ b/hw/char/xilinx_uartlite.c
@@ -228,6 +228,8 @@ static void xilinx_uartlite_class_init(ObjectClass *klass, void *data)
 
     dc->reset = xilinx_uartlite_reset;
     dc->realize = xilinx_uartlite_realize;
+    /* Reason: realize() method uses qemu_char_get_next_serial() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo xilinx_uartlite_info = {
diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c
index 0cc53d9..2209ef1 100644
--- a/hw/sd/milkymist-memcard.c
+++ b/hw/sd/milkymist-memcard.c
@@ -297,6 +297,8 @@ static void milkymist_memcard_class_init(ObjectClass *klass, void *data)
     k->init = milkymist_memcard_init;
     dc->reset = milkymist_memcard_reset;
     dc->vmsd = &vmstate_milkymist_memcard;
+    /* Reason: init() method uses drive_get_next() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo milkymist_memcard_info = {
diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c
index bf37da6..11fcd47 100644
--- a/hw/sd/pl181.c
+++ b/hw/sd/pl181.c
@@ -508,6 +508,8 @@ static void pl181_class_init(ObjectClass *klass, void *data)
     sdc->init = pl181_init;
     k->vmsd = &vmstate_pl181;
     k->reset = pl181_reset;
+    /* Reason: init() method uses drive_get_next() */
+    k->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo pl181_info = {
diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index ab13505..e63367b 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -1297,6 +1297,8 @@ static void sdhci_sysbus_class_init(ObjectClass *klass, void *data)
     dc->vmsd = &sdhci_vmstate;
     dc->props = sdhci_properties;
     dc->realize = sdhci_sysbus_realize;
+    /* Reason: instance_init() method uses drive_get_next() */
+    dc->cannot_instantiate_with_device_add_yet = true;
 }
 
 static const TypeInfo sdhci_sysbus_info = {
-- 
1.9.3

Re: [Qemu-devel] [PULL 0/5] hw: Contain drive, serial, parallel, net misuse

[Peter Maydell]

On 1 April 2015 at 16:03, Markus Armbruster <armbru@redhat.com> wrote:
> The following changes since commit b8a86c4ac4d04c106ba38fbd707041cba334a155:
>
>   Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging (2015-04-01 11:31:31 +0100)
>
> are available in the git repository at:
>
>
>   git://repo.or.cz/qemu/armbru.git tags/pull-hw-2015-04-01
>
> for you to fetch changes up to 7157bc9cf431e1debd0afb8e9cb6ab597ef93828:
>
>   sysbus: Make devices picking up backends unavailable with -device (2015-04-01 16:08:53 +0200)
>
> ----------------------------------------------------------------
> hw: Contain drive, serial, parallel, net misuse

I'm afraid I can't apply this -- none of the patches have any
signed-off-by lines. (The versions on the list do, but not
the ones tagged in the git repo -- you should probably fix
your workflow so it doesn't cause you to send patches to the
list which aren't the same as the ones in the pull request.)

thanks
-- PMM

Re: [Qemu-devel] [PULL 0/5] hw: Contain drive, serial, parallel, net misuse

[Markus Armbruster]

Peter Maydell <peter.maydell@linaro.org> writes:

> On 1 April 2015 at 16:03, Markus Armbruster <armbru@redhat.com> wrote:
>> The following changes since commit b8a86c4ac4d04c106ba38fbd707041cba334a155:
>>
>>   Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream'
>> into staging (2015-04-01 11:31:31 +0100)
>>
>> are available in the git repository at:
>>
>>
>>   git://repo.or.cz/qemu/armbru.git tags/pull-hw-2015-04-01
>>
>> for you to fetch changes up to 7157bc9cf431e1debd0afb8e9cb6ab597ef93828:
>>
>>   sysbus: Make devices picking up backends unavailable with -device
>> (2015-04-01 16:08:53 +0200)
>>
>> ----------------------------------------------------------------
>> hw: Contain drive, serial, parallel, net misuse
>
> I'm afraid I can't apply this -- none of the patches have any
> signed-off-by lines. (The versions on the list do, but not
> the ones tagged in the git repo -- you should probably fix
> your workflow so it doesn't cause you to send patches to the
> list which aren't the same as the ones in the pull request.)

Let me try again.  Sorry for wasting your time.