Commit Graph

300451 Commits

Author SHA1 Message Date
Kuninori Morimoto
f33238e96f ASoC: sh: fsi: call fsi_hw_startup/shutdown from fsi_dai_trigger()
fsi_hw_startup/shutdown() needs the setup of bus width,
but it is impossible to get parameter of snd_pcm_runtime at this timing.
So, these functions are changed so that be called from fsi_dai_trigger().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-19 19:41:09 +01:00
Kuninori Morimoto
9c59dd342e ASoC: sh: fsi: use same format for IN/OUT
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-19 19:41:08 +01:00
Kuninori Morimoto
284c6f6547 ASoC: sh: fsi: add fsi_version() and removed meaningless version check
This patch adds fsi_version() function for accessing version.

And there were some meaningless version check which never hit.
This patch removed it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-19 19:41:08 +01:00
Kuninori Morimoto
4d62ec125b ASoC: sh: fsi: use register field macro name on IN/OUT_DMAC
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-19 19:41:08 +01:00
Stephen Warren
d8259ca50b ASoC: tegra: Add machine driver for WM8753 codec
One such machine is Whistler.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-19 19:38:00 +01:00
Ricardo Neri
5452030c56 ASoC: OMAP: HDMI: Introduce codec
Introduce codec for HDMI. At the moment, this is a dummy codec. In the
future it will parse the EDID to modify the supported parameters, such
as the number of channels and the sample rates. At the moment, it blindly
supports all the sample rates and audio channels described in the HDMI
1.4a specification.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 17:31:24 +01:00
Philippe Rétornaz
5fb86e5d4a ARM: mx31_3ds: Add sound support
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:44 +01:00
Philippe Rétornaz
cd7dc7a42c ASoC: imx-mc13783 cleanup
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:23 +01:00
Philippe Rétornaz
2f7b945148 mx31moboard: Add sound support
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:22 +01:00
Philippe Rétornaz
b77458da95 ASoC: mc13783 codec cleanups
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:21 +01:00
Philippe Rétornaz
6b0a795a17 ASoC: add imx-mc13783 sound support
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:21 +01:00
Philippe Rétornaz
8b908b8660 ASoC: Add mc13783 codec
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:20 +01:00
Philippe Rétornaz
e3a0871c8f mfd: mc13xxx: add codec platform data
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 16:42:08 +01:00
Stephen Warren
fe33d4c5e2 ASoC: don't flip master of DT-instantiated DAI links
Commit 4924082 "ASoC: core: Flip master for CODECs in the CPU slot of a
CODEC<->CODEC link" added code that was conditional on there being no
PCM/DMA driver for the link. However, it failed to cover the case where
the link was instantiated from device tree, and hence was specified by
DT node rather than name.

This prevents the following error on Toshiba AC100:
aplay: pcm_write:1603: write error: Input/output error

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-16 09:44:18 +01:00
Mark Brown
018a455ac9 ASoC: wm8350: Remove direct usage of codec->control_data
Supports regmap conversion.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-14 17:54:35 +01:00
Mark Brown
308f4b044e ASoC: tlv320aic3x: Remove unused, non-standard headset detection
aic3x_set_headset_detection() isn't made available outside the driver or
referenced within the driver which sparse notices and complains about.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-14 17:54:23 +01:00
Mark Brown
f43f2db7c6 ASoC: wm8350: Don't use irq_base
In preparation for irq_domain support change the code to the not switch
based on the irq number. This actually makes things simpler, if slightly
repetitive.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-13 23:54:11 +01:00
Mark Brown
a91b778219 ASoC: max98095: Single bit bitfields should be unsigned
There's no space for the sign bit.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-13 23:33:53 +01:00
Mark Brown
665010c280 ASoC: lm49453: Fix author e-mail address
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-13 23:33:51 +01:00
Mark Brown
d1280fd8f5 ASoC: lm49453: Staticise non-exported symbol lm45453_dai
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-13 23:33:48 +01:00
Mark Brown
dc2af52c0d Linux 3.4-rc7
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Merge tag 'v3.4-rc7' into for-3.5

Linux 3.4-rc7

Conflicts):
	drivers/base/regmap/regmap.c         (overlap with bug fixes)
	sound/soc/blackfin/bf5xx-ssm2602.c   (overlap with bug fixes)
2012-05-13 13:32:54 +01:00
Linus Torvalds
36be50515f Linux 3.4-rc7
.. and this should hopefully be the last -rc before final 3.4 release.
2012-05-12 18:37:47 -07:00
Linus Torvalds
5889fc3217 ARM: SoC fixes for 3.4-rc
I was hoping to be done with fixes for 3.4 but we got two branches from
 subarch maintainers the last couple of days. So here is one last(?) pull
 request for arm-soc containing 7 patches:
 
 - 5 of them are for shmobile dealing with SMP setup and compile failures
 - The remaining two are for regressions on the Samsung platforms
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM: SoC fixes from Olof Johansson:
 "I was hoping to be done with fixes for 3.4 but we got two branches
  from subarch maintainers the last couple of days.  So here is one
  last(?) pull request for arm-soc containing 7 patches:

   - Five of them are for shmobile dealing with SMP setup and compile
     failures
   - The remaining two are for regressions on the Samsung platforms"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: EXYNOS: fix ctrlbit for exynos5_clk_pdma1
  ARM: EXYNOS: use s5p-timer for UniversalC210 board
  ARM / mach-shmobile: Invalidate caches when booting secondary cores
  ARM / mach-shmobile: sh73a0 SMP TWD boot regression fix
  ARM / mach-shmobile: r8a7779 SMP TWD boot regression fix
  ARM: mach-shmobile: convert ag5evm to use the generic MMC GPIO hotplug helper
  ARM: mach-shmobile: convert mackerel to use the generic MMC GPIO hotplug helper
2012-05-12 17:27:41 -07:00
Linus Torvalds
1bc4a5be0a GPIO bug fixes on top of v3.4-rc6
An OMAP bug fix, a set of PCH bug fixes, and one patch to fix up compile
 warnings
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull a few more GPIO bug fixes from Grant Likely:
 "Oops, missed a couple.  Here's an updated pull req for GPIO"

A set of PCH bug fixes, and one patch to fix up compile warnings

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  gpio/exynos: Fix compiler warnings when non-exynos machines are selected
  gpio: pch9: Use proper flow type handlers
2012-05-12 17:24:29 -07:00
Olof Johansson
85d5c4a362 Merge branch 'v3.4-samsung-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
* 'v3.4-samsung-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: fix ctrlbit for exynos5_clk_pdma1
  ARM: EXYNOS: use s5p-timer for UniversalC210 board
2012-05-12 15:41:22 -07:00
Kukjin Kim
28b874a8ba ARM: EXYNOS: fix ctrlbit for exynos5_clk_pdma1
It should be (1 << 2) for ctrlbit of exynos5_clk_pdma1.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-13 08:31:53 +09:00
Marek Szyprowski
fd717cd7c9 ARM: EXYNOS: use s5p-timer for UniversalC210 board
Commit 069d4e743 ("ARM: EXYNOS4: Remove clock event timers using
ARM private timers") removed support for local timers and forced
to use MCT as event source. However MCT is not operating properly
on early revision of EXYNOS4 SoCs. All UniversalC210 boards are
based on it, so that commit broke support for it. This patch
provides a workaround that enables UniversalC210 boards to boot
again. s5p-timer is used as an event source, it works only for
non-SMP builds.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-13 08:31:52 +09:00
Olof Johansson
d2919c651e Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/renesas into fixes
By Guennadi Liakhovetski (2) and others via Rafael J. Wysocki:
"[...] urgent fixes for Renesas ARM-based platforms.  Four of these
commits are fixes of regressions new in 3.4-rc and the last one is
necessary for SMP to work on those systems in general."

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/renesas:
  ARM / mach-shmobile: Invalidate caches when booting secondary cores
  ARM / mach-shmobile: sh73a0 SMP TWD boot regression fix
  ARM / mach-shmobile: r8a7779 SMP TWD boot regression fix
  ARM: mach-shmobile: convert ag5evm to use the generic MMC GPIO hotplug helper
  ARM: mach-shmobile: convert mackerel to use the generic MMC GPIO hotplug helper
2012-05-12 15:40:56 -07:00
Magnus Damm
e994d5eb7c ARM / mach-shmobile: Invalidate caches when booting secondary cores
Make sure L1 caches are invalidated when booting secondary
cores. Needed to boot all mach-shmobile SMP systems that
are using Cortex-A9 including sh73a0, r8a7779 and EMEV2.

Thanks to imx and tegra guys for actual code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-12 22:13:52 +02:00
Kuninori Morimoto
d6720003c3 ARM / mach-shmobile: sh73a0 SMP TWD boot regression fix
Fix SMP TWD boot regression on sh73a0 based platforms caused by:

4200b16 ARM: shmobile: convert to twd_local_timer_register() interface

After the merge of the above commit it has been impossible to boot
sh73a0 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The
kernel crashes at smp_init_cpus() timing which is before the console
has been initialized, so to the user this looks like a kernel lock up
without any particular error message.

This patch fixes the regression on sh73a0 by moving the TWD
registration code from smp_init_cpus() to sys_timer->init() time.

This patch removed shmobile_twd_init() which is no longer needed

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-12 22:13:45 +02:00
Magnus Damm
b759bd114e ARM / mach-shmobile: r8a7779 SMP TWD boot regression fix
Fix SMP TWD boot regression on r8a7779 based platforms caused by:

4200b16 ARM: shmobile: convert to twd_local_timer_register() interface

After the merge of the above commit it has been impossible to boot
r8a7779 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The
kernel crashes at smp_init_cpus() timing which is before the console
has been initialized, so to the user this looks like a kernel lock up
without any particular error message.

This patch fixes the regression on r8a7779 by moving the TWD
registration code from smp_init_cpus() to sys_timer->init() time.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-12 22:13:38 +02:00
Guennadi Liakhovetski
173e2fec4d ARM: mach-shmobile: convert ag5evm to use the generic MMC GPIO hotplug helper
This also fixes the following modular mmc build failure:

arch/arm/mach-shmobile/built-in.o: In function `mackerel_sdhi0_gpio_cd':
pfc-sh7372.c:(.text+0x1138): undefined reference to `mmc_detect_change'

on this platform by eliminating the use of an inline function, which
calls into the mmc core.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-12 22:13:01 +02:00
Guennadi Liakhovetski
2b3e38c4fb ARM: mach-shmobile: convert mackerel to use the generic MMC GPIO hotplug helper
This also fixes the following modular mmc build failure:

arch/arm/mach-shmobile/built-in.o: In function `ag5evm_sdhi0_gpio_cd':
pfc-sh73a0.c:(.text+0x7c0): undefined reference to `mmc_detect_change'

on this platform by eliminating the use of an inline function, which
calls into the mmc core.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-12 22:12:36 +02:00
Linus Torvalds
cf00c55e3d SCSI fixes on 20120512
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of minor qla and virto fixes plus one major regression
  fix (oops in all legacy host drivers)."

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] virtio_scsi: fix TMF use-after-free
  [SCSI] fix oops in all legacy host adapters caused by 6f381fa
  [SCSI] qla2xxx: Update version number to 8.04.00.03-k.
  [SCSI] qla2xxx: Properly check for current state after the fabric-login request.
  [SCSI] qla2xxx: Proper completion to scsi-ml for scsi status task_set_full and busy.
  [SCSI] qla2xxx: Block flash access from application when device is initialized for ISP82xx.
  [SCSI] qla2xxx: Fix reset time out as qla2xxx not ack to reset request.
2012-05-12 13:02:31 -07:00
Linus Torvalds
4a873f5399 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David S. Miller:

 1) Since we do RCU lookups on ipv4 FIB entries, we have to test if the
    entry is dead before returning it to our caller.

 2) openvswitch locking and packet validation fixes from Ansis Atteka,
    Jesse Gross, and Pravin B Shelar.

 3) Fix PM resume locking in IGB driver, from Benjamin Poirier.

 4) Fix VLAN header handling in vhost-net and macvtap, from Basil Gor.

 5) Revert a bogus network namespace isolation change that was causing
    regressions on S390 networking devices.

 6) If bonding decides to process and handle a LACPDU frame, we
    shouldn't bump the rx_dropped counter.  From Jiri Bohac.

 7) Fix mis-calculation of available TX space in r8169 driver when doing
    TSO, which can lead to crashes and/or hung device.  From Julien
    Ducourthial.

 8) SCTP does not validate cached routes properly in all cases, from
    Nicolas Dichtel.

 9) Link status interrupt needs to be handled in ks8851 driver, from
    Stephen Boyd.

10) Use capable(), not cap_raised(), in connector/userns netlink code.
    From Eric W. Biederman via Andrew Morton.

11) Fix pktgen OOPS on module unload, from Eric Dumazet.

12) iwlwifi under-estimates SKB truesizes, also from Eric Dumazet.

13) Cure division by zero in SFC driver, from Ben Hutchings.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (26 commits)
  ks8851: Update link status during link change interrupt
  macvtap: restore vlan header on user read
  vhost-net: fix handle_rx buffer size
  bonding: don't increase rx_dropped after processing LACPDUs
  connector/userns: replace netlink uses of cap_raised() with capable()
  sctp: check cached dst before using it
  pktgen: fix crash at module unload
  Revert "net: maintain namespace isolation between vlan and real device"
  ehea: fix losing of NEQ events when one event occurred early
  igb: fix rtnl race in PM resume path
  ipv4: Do not use dead fib_info entries.
  r8169: fix unsigned int wraparound with TSO
  sfc: Fix division by zero when using one RX channel and no SR-IOV
  openvswitch: Validation of IPv6 set port action uses IPv4 header
  net: compare_ether_addr[_64bits]() has no ordering
  cdc_ether: Ignore bogus union descriptor for RNDIS devices
  bnx2x: bug fix when loading after SAN boot
  e1000: Silence sparse warnings by correcting type
  igb, ixgbe: netdev_tx_reset_queue incorrectly called from tx init path
  openvswitch: Release rtnl_lock if ovs_vport_cmd_build_info() failed.
  ...
2012-05-12 12:57:01 -07:00
Linus Torvalds
2eb429671a Device-mapper fixes for 3.4.
Fix a couple of serious memory leaks in device-mapper thin provisioning
 and tidy its MODULE_DESCRIPTION.
 
 Mitigate occasional reported hangs associated with multipath scsi_dh
 module loading.
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Merge tag 'dm-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm

Pull device-mapper fixes from Alasdair G Kergon:
 "Fix a couple of serious memory leaks in device-mapper thin
  provisioning and tidy its MODULE_DESCRIPTION.

  Mitigate occasional reported hangs associated with multipath scsi_dh
  module loading."

* tag 'dm-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm mpath: check if scsi_dh module already loaded before trying to load
  dm thin: correct module description
  dm thin: fix unprotected use of prepared_discards list
  dm thin: reinstate missing mempool_free in cell_release_singleton
2012-05-12 12:56:08 -07:00
Rafael J. Wysocki
a6c072c709 MAINTAINERS: Add myself as the cpufreq maintainer
Since cpufreq has no official maintainer at the moment, I'm willing
to maintain it along some other power management core code I've been
maintaining already.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-12 12:55:22 -07:00
Mark Brown
f1992dde7f ASoC: wm8731: Convert to devm_ functions
Use the devm_ versions of the regmap and memory allocation functions,
saving some error handling code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12 20:11:38 +01:00
Mark Brown
d5644076bf ASoC: wm5100: Convert to module_i2c_driver()
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12 13:02:02 +01:00
Mark Brown
68a02db415 ASoC: littlemill: Use a widget to keep track of AIF2 clocking
Since we only need to clock AIF2 when it's actively in use start up the
FLL for it using a supply widget which supplies AIF2CLK. This both makes
the sequencing more robust and ensures we minimise power consumption.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12 12:54:06 +01:00
Shawn Guo
e968194b45 ASoC: mxs: add device tree support for mxs-sgtl5000
Add device tree probe for mxs-sgtl5000 machine driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12 11:04:59 +01:00
Shawn Guo
08641c7c74 ASoC: mxs: add device tree support for mxs-saif
Add device tree probe for mxs-saif driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12 11:04:59 +01:00
Shawn Guo
4da3fe7851 ASoC: mxs: mxs-pcm does not need to be a plaform_driver
Same as the commit 518de86 (ASoC: tegra: register 'platform' from DAIs,
get rid of pdev), it makes mxs-pcm not a platform_driver but helper to
register "platform", so that the platform_device for mxs-pcm can be
saved completely.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-12 11:04:58 +01:00
Mike Snitzer
510193a2d3 dm mpath: check if scsi_dh module already loaded before trying to load
If the requested scsi_dh module is already loaded then skip
request_module().

Multipath table loads can hang in an unnecessary __request_module.

Reported-by: Ben Marzinski <bmarzins@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-05-12 01:43:21 +01:00
Alasdair G Kergon
7cab8bf160 dm thin: correct module description
Remove duplicate copy of string "device-mapper" (DM_NAME) from
MODULE_DESCRIPTION.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-05-12 01:43:19 +01:00
Mike Snitzer
c3a0ce2eab dm thin: fix unprotected use of prepared_discards list
Fix two places in commit 104655fd4d ("dm thin: support discards") that
didn't use pool->lock to protect against concurrent changes to the
prepared_discards list.

Without this fix, thin_endio() can race with process_discard(), leading
to concurrent list_add()s that result in the processes locking up with
an error like the following:

WARNING: at lib/list_debug.c:32 __list_add+0x8f/0xa0()
...
list_add corruption. next->prev should be prev (ffff880323b96140), but was ffff8801d2c48440. (next=ffff8801d2c485c0).
...
Pid: 17205, comm: kworker/u:1 Tainted: G        W  O 3.4.0-rc3.snitm+ #1
Call Trace:
 [<ffffffff8103ca1f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8103cb16>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffa04f6ce6>] ? bio_detain+0xc6/0x210 [dm_thin_pool]
 [<ffffffff8124ff3f>] __list_add+0x8f/0xa0
 [<ffffffffa04f70d2>] process_discard+0x2a2/0x2d0 [dm_thin_pool]
 [<ffffffffa04f6a78>] ? remap_and_issue+0x38/0x50 [dm_thin_pool]
 [<ffffffffa04f7c3b>] process_deferred_bios+0x7b/0x230 [dm_thin_pool]
 [<ffffffffa04f7df0>] ? process_deferred_bios+0x230/0x230 [dm_thin_pool]
 [<ffffffffa04f7e42>] do_worker+0x52/0x60 [dm_thin_pool]
 [<ffffffff81056fa9>] process_one_work+0x129/0x450
 [<ffffffff81059b9c>] worker_thread+0x17c/0x3c0
 [<ffffffff81059a20>] ? manage_workers+0x120/0x120
 [<ffffffff8105eabe>] kthread+0x9e/0xb0
 [<ffffffff814ceda4>] kernel_thread_helper+0x4/0x10
 [<ffffffff8105ea20>] ? kthread_freezable_should_stop+0x70/0x70
 [<ffffffff814ceda0>] ? gs_change+0x13/0x13
---[ end trace 7e0a523bc5e52692 ]---

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-05-12 01:43:16 +01:00
Mike Snitzer
03aaae7cdc dm thin: reinstate missing mempool_free in cell_release_singleton
Fix a significant memory leak inadvertently introduced during
simplification of cell_release_singleton() in commit
6f94a4c45a ("dm thin: fix stacked bi_next
usage").

A cell's hlist_del() must be accompanied by a mempool_free().
Use __cell_release() to do this, like before.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-05-12 01:43:12 +01:00
Sachin Kamat
2760f7adbb gpio/exynos: Fix compiler warnings when non-exynos machines are selected
Fixes the following compiler warnings:

drivers/gpio/gpio-samsung.c: In function ‘samsung_gpiolib_init’:
drivers/gpio/gpio-samsung.c:2980:1: warning: label ‘err_ioremap1’ defined but not used [-Wunused-label]
drivers/gpio/gpio-samsung.c:2978:1: warning: label ‘err_ioremap2’ defined but not used [-Wunused-label]
drivers/gpio/gpio-samsung.c:2976:1: warning: label ‘err_ioremap3’ defined but not used [-Wunused-label]
drivers/gpio/gpio-samsung.c:2974:1: warning: label ‘err_ioremap4’ defined but not used [-Wunused-label]
drivers/gpio/gpio-samsung.c:2722:55: warning: unused variable ‘gpio_base4’ [-Wunused-variable]

drivers/gpio/gpio-samsung.c:455:32: warning: ‘exynos_gpio_cfg’ defined but not used [-Wunused-variable]
drivers/gpio/gpio-samsung.c:2126:33: warning: ‘exynos4_gpios_1’ defined but not used [-Wunused-variable]
drivers/gpio/gpio-samsung.c:2228:33: warning: ‘exynos4_gpios_2’ defined but not used [-Wunused-variable]
drivers/gpio/gpio-samsung.c:2373:33: warning: ‘exynos4_gpios_3’ defined but not used [-Wunused-variable]

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-11 18:25:53 -06:00
Thomas Gleixner
df9541a60a gpio: pch9: Use proper flow type handlers
Jean-Francois Dagenais reported:

 Configuring a gpio pin with the gpio-pch driver with
 "IRQF_TRIGGER_LOW | IRQF_ONESHOT" generates an interrupt storm for
 threaded ISR until the ISR thread actually gets to physically clear
 the interrupt on the triggering chip!! The immediate observable
 symptom is the high CPU usage for my ISR thread task and the
 interrupt count in /proc/interrupts incrementing radically.

The driver is wrong in several ways:

1) Using handle_simple_irq() does not provide proper flow control
   handling. In the case of oneshot threaded handlers for the
   demultiplexed interrupts this results in an interrupt storm because
   the simple handler does not deal with masking/unmasking.  Even
   without threaded oneshot handlers an interrupt storm for level type
   interrupts can easily be triggered when the interrupt is disabled
   and the interrupt line is activated from the device.

2) Acknowlegding the demultiplexed interrupt before calling the
   handler is wrong for level type interrupts.

3) The set_type function unconditionally enables the interrupt. It's
   supposed to set the type and nothing else. The unmasking is done by
   the core code.

Move the acknowledge code into a separate function and add it to the
demux irqchip callbacks.

Remove the unconditional enabling from the set_type() callback and set
the proper flow handlers depending on the selected type (level/edge).

Reported-and-tested-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-11 18:18:50 -06:00
Linus Torvalds
bcc62fb06b GPIO omap bug fixes on top of v3.4-rc6
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull GPIO omap bug fix from Grant Likely.

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  gpio/omap: fix incorrect initialization of omap_gpio_mod_init
2012-05-11 16:59:07 -07:00