]> git.karo-electronics.de Git - karo-tx-linux.git/log
karo-tx-linux.git
12 years agoASoC: tegra+alc5632: Added digital microphone DAPM widget.
Leon Romanovsky [Mon, 13 Feb 2012 19:27:36 +0000 (21:27 +0200)]
ASoC: tegra+alc5632: Added digital microphone DAPM widget.

ALC5632 codec supports digital microphone. This patch adds DAPM widget.

Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Actively discharge VMID when not in use
Mark Brown [Sat, 11 Feb 2012 23:10:30 +0000 (23:10 +0000)]
ASoC: wm8994: Actively discharge VMID when not in use

Ensure we're in a known state when we restart.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: VMID management improvements
Mark Brown [Sat, 11 Feb 2012 23:09:53 +0000 (23:09 +0000)]
ASoC: wm8994: VMID management improvements

Raise the ramp time to 50ms to cover corner cases, use the startup bias
generator, explicitly reset the ramp circuit when complete and reorder
things all of which should improve performance somewhat for systems that
are sensitive to noise from VMID.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm_hubs: Clamp inputs to VMID while we ramp
Mark Brown [Fri, 10 Feb 2012 18:09:42 +0000 (18:09 +0000)]
ASoC: wm_hubs: Clamp inputs to VMID while we ramp

Reduces the amount of time taken to stabilise them.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm_hubs: Improve single ended line output enable performance
Mark Brown [Wed, 8 Feb 2012 18:51:42 +0000 (18:51 +0000)]
ASoC: wm_hubs: Improve single ended line output enable performance

The enable of the single ended line outputs on wm_hubs devices performs
better if the output is enabled prior to starting VMID. Since inactive
outputs are held at VMID anyway there is little cost to doing this for
unused outputs. Add callbacks into wm_hubs and keep track of which outputs
are really active so we can disable them once we're active.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Allow 8kHz stream support.
Andrey Danin [Sat, 11 Feb 2012 21:26:38 +0000 (23:26 +0200)]
ASoC: alc5632: Allow 8kHz stream support.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Fix Capture/Playback attributes for microphone inputs
Paul Fertser [Sat, 11 Feb 2012 21:26:37 +0000 (23:26 +0200)]
ASoC: alc5632: Fix Capture/Playback attributes for microphone inputs

According to the mixer path diagram input sources' attenuators logically
belong to the playback path and DMIC boost only affects capture.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Fix Boost Volume TLVs used for the external microphones
Paul Fertser [Sat, 11 Feb 2012 21:26:36 +0000 (23:26 +0200)]
ASoC: alc5632: Fix Boost Volume TLVs used for the external microphones

This brings the TLVs in sync with the documentation and allows to properly
manipulate mic boost controls with alsamixer.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Connect HP/HPL/HPR mix'es to HPOut Mix
Marc Dietrich [Sat, 11 Feb 2012 21:26:35 +0000 (23:26 +0200)]
ASoC: alc5632: Connect HP/HPL/HPR mix'es to HPOut Mix

This patch should fix output through speakers using HP mixer.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Fix I2S digital interface power for recording
Andrey Danin [Sat, 11 Feb 2012 21:26:34 +0000 (23:26 +0200)]
ASoC: alc5632: Fix I2S digital interface power for recording

Fix I2S digital interface power for recording.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Add DMIC switches and controls
Andrey Danin [Sat, 11 Feb 2012 21:26:33 +0000 (23:26 +0200)]
ASoC: alc5632: Add DMIC switches and controls

Add DMIC switches and controls to ALC5632 codec.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Refactored DAPM routes to add voice support
Andrey Danin [Sat, 11 Feb 2012 21:26:32 +0000 (23:26 +0200)]
ASoC: alc5632: Refactored DAPM routes to add voice support

Refactored DAPM routes to add voice support.

- Added undocumented register
- Used AIF in/out
- Added missed voice items and routes
- Added DMIC input
- Romoved unrelevant items

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Remove unexisting route from Phone Mix to Mono Mix
Andrey Danin [Sat, 11 Feb 2012 21:26:31 +0000 (23:26 +0200)]
ASoC: alc5632: Remove unexisting route from Phone Mix to Mono Mix

There is no Phone Mix<->Mono Mix route in datasheet.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Rename capture switches to common scheme XXX2REC
Andrey Danin [Sat, 11 Feb 2012 21:26:30 +0000 (23:26 +0200)]
ASoC: alc5632: Rename capture switches to common scheme XXX2REC

Rename capture switches to common scheme XXX2REC.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Add voice DAC playback switch
Andrey Danin [Sat, 11 Feb 2012 21:26:29 +0000 (23:26 +0200)]
ASoC: alc5632: Add voice DAC playback switch

Add voice DAC playback switch.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Fixed voice DAC volume step.
Andrey Danin [Sat, 11 Feb 2012 21:26:28 +0000 (23:26 +0200)]
ASoC: alc5632: Fixed voice DAC volume step.

Remove extra zero from volume step in DECLARE_TLV_DB_SCALE macro.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: alc5632: Coding style. Remove two extra empty lines.
Andrey Danin [Sat, 11 Feb 2012 21:26:27 +0000 (23:26 +0200)]
ASoC: alc5632: Coding style. Remove two extra empty lines.

Signed-off-by: Andrey Danin <danindrey@mail.ru>
Signed-off-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8993: Add register default for INPUTS_CLAMP
Mark Brown [Fri, 10 Feb 2012 18:09:59 +0000 (18:09 +0000)]
ASoC: wm8993: Add register default for INPUTS_CLAMP

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: mxs-saif: use devm_ functions
Julia Lawall [Fri, 10 Feb 2012 08:17:01 +0000 (09:17 +0100)]
ASoC: mxs-saif: use devm_ functions

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8993: Correct typos in regmap conversion
Mark Brown [Fri, 10 Feb 2012 18:02:58 +0000 (18:02 +0000)]
ASoC: wm8993: Correct typos in regmap conversion

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: Fix build error in sound/soc/omap/n810.c
Axel Lin [Fri, 10 Feb 2012 06:54:37 +0000 (14:54 +0800)]
ASoC: Fix build error in sound/soc/omap/n810.c

Fix below build error which is introduced by
commit 022658 "ASoC: core: Add support for DAI and machine kcontrols".

  CC [M]  sound/soc/omap/n810.o
sound/soc/omap/n810.c: In function 'n810_set_input':
sound/soc/omap/n810.c:194: error: 'codec' undeclared (first use in this function)
sound/soc/omap/n810.c:194: error: (Each undeclared identifier is reported only once
sound/soc/omap/n810.c:194: error: for each function it appears in.)
sound/soc/omap/n810.c:188: warning: unused variable 'card'
make[3]: *** [sound/soc/omap/n810.o] Error 1
make[2]: *** [sound/soc/omap] Error 2
make[1]: *** [sound/soc] Error 2
make: *** [sound] Error 2

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: Fix typo in twl4030.c
Masanari Iida [Thu, 9 Feb 2012 14:46:08 +0000 (23:46 +0900)]
ASoC: Fix typo in twl4030.c

Correct spelling "memroy" to "memory" in
sound/soc/codecs/twl4030.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoMerge tag 'v3.3-rc3' as we've got several bugfixes in there which are
Mark Brown [Thu, 9 Feb 2012 12:00:22 +0000 (12:00 +0000)]
Merge tag 'v3.3-rc3' as we've got several bugfixes in there which are
colliding annoyingly with development.

Linux 3.3-rc3

.. the number of the half-beast?

Conflicts:
sound/soc/codecs/wm5100.c
sound/soc/codecs/wm8994.c

12 years agoMerge branch 'topic/pcm-internal' of git://git.kernel.org/pub/scm/linux/kernel/git...
Mark Brown [Thu, 9 Feb 2012 10:43:48 +0000 (10:43 +0000)]
Merge branch 'topic/pcm-internal' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound into for-3.4

12 years agoASoC: wm2200: Ignore pmdown_time
Mark Brown [Wed, 8 Feb 2012 18:35:43 +0000 (18:35 +0000)]
ASoC: wm2200: Ignore pmdown_time

The device is generally not succeptible to the issues that cause this to
be an issue.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: twl6040: Move ignore_pmdown_time to driver struct
Mark Brown [Wed, 8 Feb 2012 18:34:19 +0000 (18:34 +0000)]
ASoC: twl6040: Move ignore_pmdown_time to driver struct

It's set unconditionally.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
12 years agoASoC: core: Allow CODECs to set ignore_pmdown_time in the driver struct
Mark Brown [Wed, 8 Feb 2012 13:20:50 +0000 (13:20 +0000)]
ASoC: core: Allow CODECs to set ignore_pmdown_time in the driver struct

This is usually not a use case dependant flag anyway.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
12 years agoASoC: pcm: If pmdown_time is zero then shut down DAPM immediately
Mark Brown [Wed, 8 Feb 2012 20:10:56 +0000 (20:10 +0000)]
ASoC: pcm: If pmdown_time is zero then shut down DAPM immediately

Since we've already got logic to special case immediate teardown of the
stream we may as well use it if the pmdown_time has been set to zero by
the application layer instead of scheduling a work item with zero delay.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
12 years agoALSA: PCM - Add PCM creation API for internal PCMs.
Liam Girdwood [Wed, 8 Feb 2012 20:33:31 +0000 (20:33 +0000)]
ALSA: PCM - Add PCM creation API for internal PCMs.

The new ASoC dynamic PCM core needs to create PCMs and substreams that are
for use by internal ASoC drivers only and not visible to userspace for
direct IO. These new PCMs are similar to regular PCMs expect they have no
device nodes or procfs entries. The ASoC component drivers use them in exactly
the same way as regular PCMs for PCM and DAI operations.

The intention is that a dynamic PCM based driver will register both regular
PCMs and internal PCMs. The regular PCMs will be used for all IO with userspace
however the internal PCMs will be used by the driver to route digital audio
through numerous back end DAI links (with potentially a DSP providing different
hw_params, DAI formats based on the regular front end PCM params) to devices
like CODECs, MODEMs, Bluetooth, FM, DMICs, etc

This patch adds a new snd_pcm_new_internal() API call to create the internal PCM
without device nodes or procfs. It also adds adds a new internal flag to snd_pcm.

[fixed minor coding-style issues by tiwai]

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoLinux 3.3-rc3 v3.3-rc3
Linus Torvalds [Thu, 9 Feb 2012 03:21:53 +0000 (19:21 -0800)]
Linux 3.3-rc3

12 years agoMerge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
Linus Torvalds [Thu, 9 Feb 2012 03:11:00 +0000 (19:11 -0800)]
Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

One patch fixes an bug in the ARM/MSM IOMMU code which returned sucess
in the unmap function even when an error occured and the other patch
adds a workaround into the AMD IOMMU driver to better handle broken IVRS
ACPI tables (this patch fixes the case when a device is not listed in
the table but actually translated by the iommu).

* 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/msm: Fix error handling in msm_iommu_unmap()
  iommu/amd: Work around broken IVRS tables

12 years agoMerge branch '3.3-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab...
Linus Torvalds [Thu, 9 Feb 2012 03:09:25 +0000 (19:09 -0800)]
Merge branch '3.3-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

This series contains pending target bug-fixes and cleanups for v3.3-rc3
that have been addressed the past weeks in lio-core.git.

Some of the highlights include:

 - Fix handling for control CDBs with data greater than PAGE_SIZE (andy)
 - Use IP_FREEBIND for iscsi-target to address network portal creation
   issues with systemd (dax)
 - Allow PERSISTENT RESERVE IN for non-reservation holder (marco)
 - Fix iblock se_dev_attrib.unmap_granularity (marco)
 - Fix unsupported WRITE_SAME sense payload handling (martin)
 - Add workaround for zero-length control CDB handling (nab)
 - Fix discovery with INADDR_ANY and IN6ADDR_ANY_INIT (nab)
 - Fix target_submit_cmd() exception handling (nab)
 - Return correct ASC for unimplemented VPD pages (roland)
 - Don't zero pages used for data buffers (roland)
 - Fix return code of core_tpg_.*_lun (sebastian)

* '3.3-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (26 commits)
  target: Fix unsupported WRITE_SAME sense payload
  iscsi: use IP_FREEBIND socket option
  iblock: fix handling of large requests
  target: handle empty string writes in sysfs
  iscsi_target: in_aton needs linux/inet.h
  target: Fix iblock se_dev_attrib.unmap_granularity
  target: Fix target_submit_cmd() exception handling
  target: Change target_submit_cmd() to return void
  target: accept REQUEST_SENSE with 18bytes
  target: Fail INQUIRY commands with EVPD==0 but PAGE CODE!=0
  target: Return correct ASC for unimplemented VPD pages
  iscsi-target: Fix discovery with INADDR_ANY and IN6ADDR_ANY_INIT
  target: Allow control CDBs with data > 1 page
  iscsi-target: Fix up a few assignments
  iscsi-target: make one-bit bitfields unsigned
  iscsi-target: Fix double list_add with iscsit_alloc_buffs reject
  iscsi-target: Fix reject release handling in iscsit_free_cmd()
  target: fix return code of core_tpg_.*_lun
  target: use save/restore lock primitive in core_dec_lacl_count()
  target: avoid multiple outputs in scsi_dump_inquiry()
  ...

12 years agoMerge tag 'md-3.3-fixes' of git://neil.brown.name/md
Linus Torvalds [Thu, 9 Feb 2012 03:06:30 +0000 (19:06 -0800)]
Merge tag 'md-3.3-fixes' of git://neil.brown.name/md

Some simple md-related fixes.

1/ two small fixes to ensure we handle an interrupted resync properly.
2/ avoid loading the bitmap multiple times in dm-raid

* tag 'md-3.3-fixes' of git://neil.brown.name/md:
  md: two small fixes to handling interrupt resync.
  Prevent DM RAID from loading bitmap twice.

12 years agoMerge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Thu, 9 Feb 2012 03:05:47 +0000 (19:05 -0800)]
Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6

SPI bug fixes for v3.3-rc2

Minor SPI device driver changes.  A rename of the pch_spi_pcidev symbol
that merely eliminates a modpost warning, and a Kconfig change to allow
the Samsung spi driver to build on EXYNOS.

* tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driver
  spi: Add spi-s3c64xx driver dependency on ARCH_EXYNOS4

12 years agoMerge branch 'akpm' (Andrew's tree)
Linus Torvalds [Thu, 9 Feb 2012 03:04:47 +0000 (19:04 -0800)]
Merge branch 'akpm' (Andrew's tree)

Five fixes

* branch 'akpm':
  pcmcia: fix socket refcount decrementing on each resume
  mm: fix UP THP spin_is_locked BUGs
  drivers/leds/leds-lm3530.c: fix setting pltfm->als_vmax
  mm: compaction: check for overlapping nodes during isolation for migration
  nilfs2: avoid overflowing segment numbers in nilfs_ioctl_clean_segments()

12 years agopcmcia: fix socket refcount decrementing on each resume
Russell King [Thu, 9 Feb 2012 01:13:41 +0000 (17:13 -0800)]
pcmcia: fix socket refcount decrementing on each resume

This fixes a memory-corrupting bug: not only does it cause the warning,
but as a result of dropping the refcount to zero, it causes the
pcmcia_socket0 device structure to be freed while it still has
references, causing slab caches corruption.  A fatal oops quickly
follows this warning - often even just a 'dmesg' following the warning
causes the kernel to oops.

While testing suspend/resume on an ARM device with PCMCIA support, and a
CF card inserted, I found that after five suspend and resumes, the
kernel would complain, and shortly die after with slab corruption.

  WARNING: at include/linux/kref.h:41 kobject_get+0x28/0x50()

As the message doesn't give a clue about which kobject, and the built-in
debugging in drivers/base/power/main.c happens too late, this was added
right before each get_device():

  printk("%s: %p [%s] %u\n", __func__, dev, kobject_name(&dev->kobj), atomic_read(&dev->kobj.kref.refcount));

and on the 3rd s2ram cycle, the following behaviour observed:

On the 3rd suspend/resume cycle:

  dpm_prepare: c1a0d998 [pcmcia_socket0] 3
  dpm_suspend: c1a0d998 [pcmcia_socket0] 3
  dpm_suspend_noirq: c1a0d998 [pcmcia_socket0] 3
  dpm_resume_noirq: c1a0d998 [pcmcia_socket0] 3
  dpm_resume: c1a0d998 [pcmcia_socket0] 3
  dpm_complete: c1a0d998 [pcmcia_socket0] 2

4th:

  dpm_prepare: c1a0d998 [pcmcia_socket0] 2
  dpm_suspend: c1a0d998 [pcmcia_socket0] 2
  dpm_suspend_noirq: c1a0d998 [pcmcia_socket0] 2
  dpm_resume_noirq: c1a0d998 [pcmcia_socket0] 2
  dpm_resume: c1a0d998 [pcmcia_socket0] 2
  dpm_complete: c1a0d998 [pcmcia_socket0] 1

5th:

  dpm_prepare: c1a0d998 [pcmcia_socket0] 1
  dpm_suspend: c1a0d998 [pcmcia_socket0] 1
  dpm_suspend_noirq: c1a0d998 [pcmcia_socket0] 1
  dpm_resume_noirq: c1a0d998 [pcmcia_socket0] 1
  dpm_resume: c1a0d998 [pcmcia_socket0] 1
  dpm_complete: c1a0d998 [pcmcia_socket0] 0
  ------------[ cut here ]------------
  WARNING: at include/linux/kref.h:41 kobject_get+0x28/0x50()
  Modules linked in: ucb1x00_core
  Backtrace:
  [<c0212090>] (dump_backtrace+0x0/0x110) from [<c04799dc>] (dump_stack+0x18/0x1c)
  [<c04799c4>] (dump_stack+0x0/0x1c) from [<c021cba0>] (warn_slowpath_common+0x50/0x68)
  [<c021cb50>] (warn_slowpath_common+0x0/0x68) from [<c021cbdc>] (warn_slowpath_null+0x24/0x28)
  [<c021cbb8>] (warn_slowpath_null+0x0/0x28) from [<c0335374>] (kobject_get+0x28/0x50)
  [<c033534c>] (kobject_get+0x0/0x50) from [<c03804f4>] (get_device+0x1c/0x24)
  [<c0388c90>] (dpm_complete+0x0/0x1a0) from [<c0389cc0>] (dpm_resume_end+0x1c/0x20)
  ...

Looking at commit 7b24e7988263 ("pcmcia: split up central event handler"),
the following change was made to cs.c:

                return 0;
        }
 #endif
-
-       send_event(skt, CS_EVENT_PM_RESUME, CS_EVENT_PRI_LOW);
+       if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
+               skt->callback->early_resume(skt);
        return 0;
 }

And the corresponding change in ds.c is from:

-static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
-{
-       struct pcmcia_socket *s = pcmcia_get_socket(skt);
...
-       switch (event) {
...
-       case CS_EVENT_PM_RESUME:
-               if (verify_cis_cache(skt) != 0) {
-                       dev_dbg(&skt->dev, "cis mismatch - different card\n");
-                       /* first, remove the card */
-                       ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH);
-                       mutex_lock(&s->ops_mutex);
-                       destroy_cis_cache(skt);
-                       kfree(skt->fake_cis);
-                       skt->fake_cis = NULL;
-                       s->functions = 0;
-                       mutex_unlock(&s->ops_mutex);
-                       /* now, add the new card */
-                       ds_event(skt, CS_EVENT_CARD_INSERTION,
-                                CS_EVENT_PRI_LOW);
-               }
-               break;
...
-    }

-    pcmcia_put_socket(s);

-    return 0;
-} /* ds_event */

to:

+static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
+{
+       if (!verify_cis_cache(skt)) {
+               pcmcia_put_socket(skt);
+               return 0;
+       }

+       dev_dbg(&skt->dev, "cis mismatch - different card\n");

+       /* first, remove the card */
+       pcmcia_bus_remove(skt);
+       mutex_lock(&skt->ops_mutex);
+       destroy_cis_cache(skt);
+       kfree(skt->fake_cis);
+       skt->fake_cis = NULL;
+       skt->functions = 0;
+       mutex_unlock(&skt->ops_mutex);

+       /* now, add the new card */
+       pcmcia_bus_add(skt);
+       return 0;
+}

As can be seen, the original function called pcmcia_get_socket() and
pcmcia_put_socket() around the guts, whereas the replacement code
calls pcmcia_put_socket() only in one path.  This creates an imbalance
in the refcounting.

Testing with pcmcia_put_socket() put removed shows that the bug is gone:

  dpm_suspend: c1a10998 [pcmcia_socket0] 5
  dpm_suspend_noirq: c1a10998 [pcmcia_socket0] 5
  dpm_resume_noirq: c1a10998 [pcmcia_socket0] 5
  dpm_resume: c1a10998 [pcmcia_socket0] 5
  dpm_complete: c1a10998 [pcmcia_socket0] 5

Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agomm: fix UP THP spin_is_locked BUGs
Hugh Dickins [Thu, 9 Feb 2012 01:13:40 +0000 (17:13 -0800)]
mm: fix UP THP spin_is_locked BUGs

Fix CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_SMP=n CONFIG_DEBUG_VM=y
CONFIG_DEBUG_SPINLOCK=n kernel: spin_is_locked() is then always false,
and so triggers some BUGs in Transparent HugePage codepaths.

asm-generic/bug.h mentions this problem, and provides a WARN_ON_SMP(x);
but being too lazy to add VM_BUG_ON_SMP, BUG_ON_SMP, WARN_ON_SMP_ONCE,
VM_WARN_ON_SMP_ONCE, just test NR_CPUS != 1 in the existing VM_BUG_ONs.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/leds/leds-lm3530.c: fix setting pltfm->als_vmax
Axel Lin [Thu, 9 Feb 2012 01:13:39 +0000 (17:13 -0800)]
drivers/leds/leds-lm3530.c: fix setting pltfm->als_vmax

In current code, pltfm->als_vmin is set to LM3530_ALS_WINDOW_mV and
pltfm->als_vmax is 0.  This does not make sense.  I think what we want
here is setting pltfm->als_vmax to LM3530_ALS_WINDOW_mV.

Both als_vmin and als_vmax local variables will be set to
pltfm->als_vmin and pltfm->als_vmax by a few lines latter.  Thus also
remove a redundant assignment for als_vmin and als_vmax in this patch.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Acked-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Tested-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agomm: compaction: check for overlapping nodes during isolation for migration
Mel Gorman [Thu, 9 Feb 2012 01:13:38 +0000 (17:13 -0800)]
mm: compaction: check for overlapping nodes during isolation for migration

When isolating pages for migration, migration starts at the start of a
zone while the free scanner starts at the end of the zone.  Migration
avoids entering a new zone by never going beyond the free scanned.

Unfortunately, in very rare cases nodes can overlap.  When this happens,
migration isolates pages without the LRU lock held, corrupting lists
which will trigger errors in reclaim or during page free such as in the
following oops

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
  IP: [<ffffffff810f795c>] free_pcppages_bulk+0xcc/0x450
  PGD 1dda554067 PUD 1e1cb58067 PMD 0
  Oops: 0000 [#1] SMP
  CPU 37
  Pid: 17088, comm: memcg_process_s Tainted: G            X
  RIP: free_pcppages_bulk+0xcc/0x450
  Process memcg_process_s (pid: 17088, threadinfo ffff881c2926e000, task ffff881c2926c0c0)
  Call Trace:
    free_hot_cold_page+0x17e/0x1f0
    __pagevec_free+0x90/0xb0
    release_pages+0x22a/0x260
    pagevec_lru_move_fn+0xf3/0x110
    putback_lru_page+0x66/0xe0
    unmap_and_move+0x156/0x180
    migrate_pages+0x9e/0x1b0
    compact_zone+0x1f3/0x2f0
    compact_zone_order+0xa2/0xe0
    try_to_compact_pages+0xdf/0x110
    __alloc_pages_direct_compact+0xee/0x1c0
    __alloc_pages_slowpath+0x370/0x830
    __alloc_pages_nodemask+0x1b1/0x1c0
    alloc_pages_vma+0x9b/0x160
    do_huge_pmd_anonymous_page+0x160/0x270
    do_page_fault+0x207/0x4c0
    page_fault+0x25/0x30

The "X" in the taint flag means that external modules were loaded but but
is unrelated to the bug triggering.  The real problem was because the PFN
layout looks like this

  Zone PFN ranges:
    DMA      0x00000010 -> 0x00001000
    DMA32    0x00001000 -> 0x00100000
    Normal   0x00100000 -> 0x01e80000
  Movable zone start PFN for each node
  early_node_map[14] active PFN ranges
      0: 0x00000010 -> 0x0000009b
      0: 0x00000100 -> 0x0007a1ec
      0: 0x0007a354 -> 0x0007a379
      0: 0x0007f7ff -> 0x0007f800
      0: 0x00100000 -> 0x00680000
      1: 0x00680000 -> 0x00e80000
      0: 0x00e80000 -> 0x01080000
      1: 0x01080000 -> 0x01280000
      0: 0x01280000 -> 0x01480000
      1: 0x01480000 -> 0x01680000
      0: 0x01680000 -> 0x01880000
      1: 0x01880000 -> 0x01a80000
      0: 0x01a80000 -> 0x01c80000
      1: 0x01c80000 -> 0x01e80000

The fix is straight-forward.  isolate_migratepages() has to make a
similar check to isolate_freepage to ensure that it never isolates pages
from a zone it does not hold the LRU lock for.

This was discovered in a 3.0-based kernel but it affects 3.1.x, 3.2.x
and current mainline.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agonilfs2: avoid overflowing segment numbers in nilfs_ioctl_clean_segments()
Xi Wang [Thu, 9 Feb 2012 01:13:37 +0000 (17:13 -0800)]
nilfs2: avoid overflowing segment numbers in nilfs_ioctl_clean_segments()

nsegs is read from userspace.  Limit its value and avoid overflowing nsegs
* sizeof(__u64) in the subsequent call to memdup_user().

This patch complements 481fe17e973fb9 ("nilfs2: potential integer overflow
in nilfs_ioctl_clean_segments()").

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Cc: Haogang Chen <haogangchen@gmail.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Wed, 8 Feb 2012 22:56:39 +0000 (14:56 -0800)]
Merge tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

sound fixes #2 for 3.3-rc3

A collection of small fixes, mostly for regressions.
In addition, a few ASoC wm8994 updates are included, too.

* tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: wm8994: Disable line output discharge prior to ramping VMID
  ASoC: wm8994: Fix typo in VMID ramp setting
  ALSA: oxygen, virtuoso: fix exchanged L/R volumes of aux and CD inputs
  ALSA: usb-audio: add Edirol UM-3G support
  ALSA: hda - add support for Uniwill ECS M31EI notebook
  ALSA: hda - Fix error handling in patch_ca0132.c
  ASoC: wm8994: Enabling VMID should take a runtime PM reference
  ALSA: hda/realtek - Fix a wrong condition
  ALSA: emu8000: Remove duplicate linux/moduleparam.h include from emu8000_patch.c
  ALSA: hda/realtek - Add missing Bass and CLFE as vmaster slaves
  ASoC: wm_hubs: Correct line input to line output 2 paths
  ASoC: cs42l73: Fix Output [X|A|V]SP_SCLK Sourcing Mode setting for master mode
  ASoC: wm8962: Fix word length configuration
  ASoC: core: Better support for idle_bias_off suspend ignores
  ASoC: wm8994: Remove ASoC level register cache sync
  ASoC: wm_hubs: Fix routing of input PGAs to line output mixer

12 years agoMerge tag 'asoc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound...
Takashi Iwai [Wed, 8 Feb 2012 20:29:38 +0000 (21:29 +0100)]
Merge tag 'asoc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

A few small WM8994 updates to go on top of the previous lot of things
that were sent.  They collide with some -next work so I'd really like to
get them into 3.3-rc3 if possible to merge back up into the -next code.
All driver specific and unexciting in the grand scheme of things.

12 years agoASoC: wm8994: Disable line output discharge prior to ramping VMID
Mark Brown [Tue, 7 Feb 2012 14:18:29 +0000 (14:18 +0000)]
ASoC: wm8994: Disable line output discharge prior to ramping VMID

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Fix typo in VMID ramp setting
Mark Brown [Tue, 7 Feb 2012 17:24:19 +0000 (17:24 +0000)]
ASoC: wm8994: Fix typo in VMID ramp setting

The VMID ramp rate is supposed to be 0x3, not 11b. Fix that.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
12 years agoASoC: wm8962: Support mono playback and record
Mark Brown [Wed, 8 Feb 2012 19:02:24 +0000 (19:02 +0000)]
ASoC: wm8962: Support mono playback and record

Make sure we generate enough BCLKs for I2S style modes by always having
a minimum of two channels worth of clocks for the BCLK.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoALSA: oxygen, virtuoso: fix exchanged L/R volumes of aux and CD inputs
Clemens Ladisch [Sat, 4 Feb 2012 19:56:47 +0000 (20:56 +0100)]
ALSA: oxygen, virtuoso: fix exchanged L/R volumes of aux and CD inputs

The driver accidentally exchanged the left/right fields for stereo AC'97
mixer registers.  This affected only the aux and CD inputs because the
line input bypasses the AC'97 codec and the mic input is mono; cards
without AC'97 (Xonar DS/DG/HDAV Slim, HG2PCI, HiFier) were not affected.

Reported-and-tested-by: Abby Cedar <abbycedar@yahoo.com.au>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: 2.6.31+ <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoALSA: usb-audio: add Edirol UM-3G support
Clemens Ladisch [Sat, 4 Feb 2012 19:51:43 +0000 (20:51 +0100)]
ALSA: usb-audio: add Edirol UM-3G support

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoMerge tag 'fbdev-fixes-for-3.3-1' of git://github.com/schandinat/linux-2.6
Linus Torvalds [Tue, 7 Feb 2012 23:54:02 +0000 (15:54 -0800)]
Merge tag 'fbdev-fixes-for-3.3-1' of git://github.com/schandinat/linux-2.6

fbdev fixes for 3.3

It includes:
 - compile fix for fsl-diu-fb
 - fix for a suspend/resume issue in atmel_lcdfb
 - fix for a suspend/resume issue in OMAP
 - workaround for a hardware bug to avoid physical damage in OMAP
 - really trivial dead code removal in intelfb

* tag 'fbdev-fixes-for-3.3-1' of git://github.com/schandinat/linux-2.6:
  atmel_lcdfb: fix usage of CONTRAST_CTR in suspend/resume
  intelfb: remove some dead code
  drivers/video: compile fixes for fsl-diu-fb.c
  OMAPDSS: HDMI: PHY burnout fix
  OMAP: 4430SDP/Panda: add HDMI HPD gpio
  OMAP: 4430SDP/Panda: setup HDMI GPIO muxes
  OMAPDSS: remove wrong HDMI HPD muxing
  OMAP: 4430SDP/Panda: rename HPD GPIO to CT_CP_HPD
  OMAP: 4430SDP/Panda: use gpio_free_array to free HDMI gpios
  OMAPDSS: use sync versions of pm_runtime_put

12 years agocheckpatch: Warn on code with 6+ tab indentation
Joe Perches [Fri, 3 Feb 2012 23:20:39 +0000 (15:20 -0800)]
checkpatch: Warn on code with 6+ tab indentation

Overly indented code should be refactored.

Suggest refactoring excessive indentation of of
if/else/for/do/while/switch statements.

For example:

$ cat t.c
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv)
{

if (1)
if (2)
if (3)
if (4)
if (5)
if (6)
if (7)
if (8)
;
return 0;
}

$ ./scripts/checkpatch.pl -f t.c
WARNING: Too many leading tabs - consider code refactoring
#12: FILE: t.c:12:
+ if (6)

WARNING: Too many leading tabs - consider code refactoring
#13: FILE: t.c:13:
+ if (7)

WARNING: Too many leading tabs - consider code refactoring
#14: FILE: t.c:14:
+ if (8)

total: 0 errors, 3 warnings, 17 lines checked

t.c has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'ib-srpt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Tue, 7 Feb 2012 22:35:19 +0000 (14:35 -0800)]
Merge tag 'ib-srpt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Cleanups and error path fixes for the new SRP (SCSI RDMA protocol) target.

* tag 'ib-srpt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/srpt: Don't return freed pointer from srpt_alloc_ioctx_ring()
  IB/srpt: Fix ERR_PTR() vs. NULL checking confusion
  IB/srpt: Remove unneeded <linux/version.h> include
  IB/srpt: Use ARRAY_SIZE() instead of open-coding
  IB/srpt: Use DEFINE_SPINLOCK()/LIST_HEAD()

12 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Tue, 7 Feb 2012 22:32:24 +0000 (14:32 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

arch: fix ioport mapping on mips,sh

Kevin Cernekee reported that recent cleanup that replaced pci_iomap with
a generic function failed to take into account the differences in io
port handling on mips and sh architectures.

Rather than revert the changes reintroducing the code duplication, this
patchset fixes this by adding ability for architectures to override
ioport mapping for pci devices.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  sh: use the the PCI channels's io_map_base
  mips: use the the PCI controller's io_map_base
  lib: add NO_GENERIC_PCI_IOPORT_MAP

12 years agoACPI: remove duplicated lines of merging problems with acpi_processor_add
Yinghai Lu [Tue, 7 Feb 2012 16:20:37 +0000 (08:20 -0800)]
ACPI: remove duplicated lines of merging problems with acpi_processor_add

Those lines have two copies.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Tue, 7 Feb 2012 22:07:20 +0000 (14:07 -0800)]
Merge git://git.samba.org/sfrench/cifs-2.6

* git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix oops in session setup code for null user mounts
  [CIFS] Update cifs Kconfig title to match removal of experimental dependency
  cifs: fix printk format warnings
  cifs: check offset in decode_ntlmssp_challenge()
  cifs: NULL dereference on allocation failure

12 years agoMerge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Tue, 7 Feb 2012 22:06:11 +0000 (14:06 -0800)]
Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: wiimote: fix invalid power_supply_powers call
  HID: wacom: Fix invalid power_supply_powers calls
  HID: hyperv: Properly disconnect the input device
  HID: usbhid: fix dead lock between open and disconect

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Linus Torvalds [Tue, 7 Feb 2012 22:05:49 +0000 (14:05 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: Avoid twl6040-codec PLL reconfiguration when not needed
  mfd: Store twl6040-codec mclk configuration

12 years agoASoC: Convert kirkwood-openrd to use snd_soc_register_card()
Axel Lin [Wed, 28 Dec 2011 12:32:42 +0000 (20:32 +0800)]
ASoC: Convert kirkwood-openrd to use snd_soc_register_card()

Use snd_soc_register_card() instead of creating a "soc-audio" platform device.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: Convert kirkwood-t5325 to use snd_soc_register_card()
Axel Lin [Wed, 28 Dec 2011 12:30:15 +0000 (20:30 +0800)]
ASoC: Convert kirkwood-t5325 to use snd_soc_register_card()

Use snd_soc_register_card() instead of creating a "soc-audio" platform device.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm_hubs: Convert most output drivers to OUT_DRV widgets
Mark Brown [Tue, 7 Feb 2012 14:24:57 +0000 (14:24 +0000)]
ASoC: wm_hubs: Convert most output drivers to OUT_DRV widgets

No practical impact but now we have the control type we may as well use
it for the slightly nicer sequencing.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoALSA: hda - add support for Uniwill ECS M31EI notebook
Jaroslav Kysela [Tue, 7 Feb 2012 13:18:14 +0000 (14:18 +0100)]
ALSA: hda - add support for Uniwill ECS M31EI notebook

This hardware requires same fixup for the node 0x0f like Asus A6Rp.
More information: https://bugzilla.redhat.com/show_bug.cgi?id=785417

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoHID: wiimote: fix invalid power_supply_powers call
Jiri Kosina [Tue, 7 Feb 2012 12:40:56 +0000 (13:40 +0100)]
HID: wiimote: fix invalid power_supply_powers call

Analogically to d7cb3dbd1 ("HID: wacom: Fix invalid power_supply_powers
calls"), fix also the same occurence in wiimote driver.

Reported-by: przemo@firszt.eu
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
12 years agoASoC: tlv320aic3x: Remove even more unused code
Mark Brown [Mon, 6 Feb 2012 19:19:13 +0000 (19:19 +0000)]
ASoC: tlv320aic3x: Remove even more unused code

Now that we're not implementing GPIO or microphone detection support
there's no users for the read() function any more.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
12 years agoALSA: hda - Fix error handling in patch_ca0132.c
Takashi Iwai [Tue, 7 Feb 2012 10:00:53 +0000 (11:00 +0100)]
ALSA: hda - Fix error handling in patch_ca0132.c

In patch_ca0132.c, the error returned from chipio_write() isn't checked
always.  Also, the power-up/down sequence isn't tracked properly in some
error paths.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoMerge tag 'asoc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound...
Takashi Iwai [Tue, 7 Feb 2012 10:04:48 +0000 (11:04 +0100)]
Merge tag 'asoc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

The only particularly remarkable change here is the one for handling of
the Android suspend ignore code for idle_bias_off CODECs.  That one is
actually a regression fix as some of the new power savings that have
been introduced confused the suspend ignore code, making devices that
are active for non-audio reasons look like they are idle causing them to
be suspended instead of being kept active.

12 years agotarget: Fix unsupported WRITE_SAME sense payload
Martin Svec [Tue, 7 Feb 2012 06:13:25 +0000 (22:13 -0800)]
target: Fix unsupported WRITE_SAME sense payload

This patch fixes a bug in target-core where unsupported WRITE_SAME ops
from a target_check_write_same_discard() failure was incorrectly
returning CHECK_CONDITION w/ TCM_INVALID_CDB_FIELD sense data.
This was causing some clients to not properly fall back, so go ahead
and use the correct TCM_UNSUPPORTED_SCSI_OPCODE sense for this case.

Reported-by: Martin Svec <martin.svec@zoner.cz>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agoiscsi: use IP_FREEBIND socket option
Dax Kelson [Sat, 4 Feb 2012 06:40:25 +0000 (23:40 -0700)]
iscsi: use IP_FREEBIND socket option

Use IP_FREEBIND socket option so that iscsi portal configuration with
explicit IP addresses can happen during boot, before network interfaces
have been assigned IPs.

This is especially important on systemd based Linux boxes where system
boot happens asynchronously and non-trivial configuration must be done
to get targetcli.service to start synchronously after the network is
configured.

Reference:
http://lists.fedoraproject.org/pipermail/devel/2011-October/158025.html

Signed-off-by: Dax Kelson <dkelson@gurulabs.com>
Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
Cc: "Andy Grover" <agrover@redhat.com>
Cc: "Lennart Poettering" <lennart@poettering.net>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agoiblock: fix handling of large requests
Christoph Hellwig [Thu, 2 Feb 2012 21:51:24 +0000 (16:51 -0500)]
iblock: fix handling of large requests

Requesting to many bvecs upsets bio_alloc_bioset, so limit the number we ask
for to the amount it can handle.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotarget: handle empty string writes in sysfs
Dan Carpenter [Fri, 27 Jan 2012 12:50:55 +0000 (15:50 +0300)]
target: handle empty string writes in sysfs

These are root only and we're not likely to hit the problem in practise,
but it makes the static checkers happy.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agoiscsi_target: in_aton needs linux/inet.h
Stephen Rothwell [Mon, 23 Jan 2012 00:39:49 +0000 (11:39 +1100)]
iscsi_target: in_aton needs linux/inet.h

Fixes this error after a recent nfs cleanup:

drivers/target/iscsi/iscsi_target_configfs.c: In function 'lio_target_call_addnptotpg':
drivers/target/iscsi/iscsi_target_configfs.c:214:3: error: implicit declaration of function 'in6_pton' [-Werror=implicit-function-declaration]
drivers/target/iscsi/iscsi_target_configfs.c:239:3: error: implicit declaration of function 'in_aton' [-Werror=implicit-function-declaration]

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotarget: Fix iblock se_dev_attrib.unmap_granularity
Marco Sanvido [Fri, 20 Jan 2012 23:49:27 +0000 (15:49 -0800)]
target: Fix iblock se_dev_attrib.unmap_granularity

The block layer keeps q->limits.discard_granularity in bytes, but iblock
(and the SCSI Block Limits VPD page) keep unmap_granularity in blocks.
Report the correct value when exporting block devices by dividing to
convert bytes to blocks.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotarget: Fix target_submit_cmd() exception handling
Nicholas Bellinger [Sat, 21 Jan 2012 03:02:56 +0000 (19:02 -0800)]
target: Fix target_submit_cmd() exception handling

This patch fixes a bug in target_submit_cmd() where the failure path
for transport_generic_allocate_tasks() made a direct call to
transport_send_check_condition_and_sense() and not calling the
final target_put_sess_cmd() release callback.

For transport_generic_allocate_tasks() failures, use the proper call to
transport_generic_request_failure() to handle kref_put() along
with potential internal queue full response processing.

It also makes transport_lookup_cmd_lun() failures in
target_submit_cmd() use transport_send_check_condition_and_sense() and
target_put_sess_cmd() directly to avoid se_cmd->se_dev reference in
transport_generic_request_failure() handling.

Finally it drops the out_check_cond: label and use direct reference for
allocate task failures, and per-se_device queue_full handling is
currently not supported for transport_lookup_cmd_lun() failure
descriptors due to se_device dependency.

Reported-by: Roland Dreier <roland@purestorage.com>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotarget: Change target_submit_cmd() to return void
Andy Grover [Thu, 19 Jan 2012 21:39:23 +0000 (13:39 -0800)]
target: Change target_submit_cmd() to return void

Retval not very useful, and may even be harmful. Once submitted, fabrics
should expect a sense error if anything goes wrong. All fabrics checking
of this retval are useless or broken:

fc checks it just to emit more debug output.
ib_srpt trickles retval up, then it is ignored.
qla2xxx trickles it up, which then causes a bug because the abort goto
in qla_target.c thinks cmd hasn't been sent to target.

Just returning nothing is best.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotarget: accept REQUEST_SENSE with 18bytes
Sebastian Andrzej Siewior [Wed, 18 Jan 2012 13:04:29 +0000 (14:04 +0100)]
target: accept REQUEST_SENSE with 18bytes

WindowsXP+BOT issues a MODE_SENSE request with page 0x1c which is not
suppoerted by target. Target rejects that command with
TCM_INVALID_CDB_FIELD, so far so good. On BOT I can't send the SENSE
response back, instead I can only reply that an error occured. The next
thing happens is a REQUEST_SENSE request with 18 bytes length. Since the
check here is more than 18 bytes I have to NACK that request as well.
This is not really required: We check for some additional room, but we
never use it. The additional length is set to 0xa so the total length is
0xa + 8 = 18 which is fine with my 18 bytes.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agomd: two small fixes to handling interrupt resync.
NeilBrown [Tue, 7 Feb 2012 01:01:51 +0000 (12:01 +1100)]
md: two small fixes to handling interrupt resync.

1/ If a resync is aborted we should record how far we got
 (recovery_cp) the last request that we know has completed
 (->curr_resync_completed) rather than the last request that was
 submitted (->curr_resync).

2/ When a resync aborts we still want to update the metadata with
 any changes, so set MD_CHANGE_DEVS even if we 'skip'.

Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoDocumentation: update quilt tree location for Documentation patches
Randy Dunlap [Mon, 6 Feb 2012 17:50:00 +0000 (09:50 -0800)]
Documentation: update quilt tree location for Documentation patches

Update quilt tree location for Documentation/ patches.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoDocumentation: add missing tainted bits to Documentation/sysctl/kernel.txt
Larry Finger [Mon, 6 Feb 2012 17:49:50 +0000 (09:49 -0800)]
Documentation: add missing tainted bits to Documentation/sysctl/kernel.txt

Two of the bits in the tainted flag are not documented.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'kvm-updates/3.3' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Tue, 7 Feb 2012 00:26:58 +0000 (16:26 -0800)]
Merge branch 'kvm-updates/3.3' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Fixing a regression with the PMU MSRs when PMU virtualization is
disabled, a guest-internal DoS with the SYSCALL instruction, and a dirty
memory logging race that may cause live migration to fail.

* 'kvm-updates/3.3' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: do not #GP on perf MSR writes when vPMU is disabled
  KVM: x86: fix missing checks in syscall emulation
  KVM: x86: extend "struct x86_emulate_ops" with "get_cpuid"
  KVM: Fix __set_bit() race in mark_page_dirty() during dirty logging

12 years agoMerge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Mon, 6 Feb 2012 23:29:56 +0000 (15:29 -0800)]
Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

GPIO fixes for v3.3-rc2

Straight forward bug fixes in this branch.  A couple of x86 gpio drivers
missing spinlock initialization, an API change fixup for the samsung driver
and a name typo fix.

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  gpio: Add missing spin_lock_init in gpio-ml-ioh driver
  gpio: Add missing spin_lock_init in gpio-pch driver
  gpio: samsung: adapt to changes in gpio specifier translator function declaration
  Correct bad gpio naming

12 years agoMerge tag 'hwmon-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 6 Feb 2012 23:25:48 +0000 (15:25 -0800)]
Merge tag 'hwmon-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

One patch to fix fan detection on NCT6776F.

* tag 'hwmon-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83627ehf) Fix number of fans for NCT6776F

12 years agoexec: fix use-after-free bug in setup_new_exec()
Heiko Carstens [Sat, 4 Feb 2012 09:47:10 +0000 (10:47 +0100)]
exec: fix use-after-free bug in setup_new_exec()

Setting the task name is done within setup_new_exec() by accessing
bprm->filename. However this happens after flush_old_exec().
This may result in a use after free bug, flush_old_exec() may
"complete" vfork_done, which will wake up the parent which in turn
may free the passed in filename.
To fix this add a new tcomm field in struct linux_binprm which
contains the now early generated task name until it is used.

Fixes this bug on s390:

  Unable to handle kernel pointer dereference at virtual kernel address 0000000039768000
  Process kworker/u:3 (pid: 245, task: 000000003a3dc840, ksp: 0000000039453818)
  Krnl PSW : 0704000180000000 0000000000282e94 (setup_new_exec+0xa0/0x374)
  Call Trace:
  ([<0000000000282e2c>] setup_new_exec+0x38/0x374)
   [<00000000002dd12e>] load_elf_binary+0x402/0x1bf4
   [<0000000000280a42>] search_binary_handler+0x38e/0x5bc
   [<0000000000282b6c>] do_execve_common+0x410/0x514
   [<0000000000282cb6>] do_execve+0x46/0x58
   [<00000000005bce58>] kernel_execve+0x28/0x70
   [<000000000014ba2e>] ____call_usermodehelper+0x102/0x140
   [<00000000005bc8da>] kernel_thread_starter+0x6/0xc
   [<00000000005bc8d4>] kernel_thread_starter+0x0/0xc
  Last Breaking-Event-Address:
   [<00000000002830f0>] setup_new_exec+0x2fc/0x374

  Kernel panic - not syncing: Fatal exception: panic_on_oops

Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoASoC: wm8994: Bring WM8994 accessory detection up to date
Mark Brown [Mon, 6 Feb 2012 18:50:39 +0000 (18:50 +0000)]
ASoC: wm8994: Bring WM8994 accessory detection up to date

Make the mechanism used for WM8994 more like that for WM1811 and WM8958:
provide the logic to distinguish between headphone and headset and hard
code the reporting of sensible SND_JACK values. Should integration with
other detection mechanisms be required we can add appropriate callbacks
(though some integrations should be able to use the subsystem ones).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Unsuspend the device while reading GPIO statuses
Mark Brown [Mon, 6 Feb 2012 18:42:14 +0000 (18:42 +0000)]
ASoC: wm8994: Unsuspend the device while reading GPIO statuses

Otherwise we might get an error if the GPIO is configured as an input
since that makes the register volatile and a suspended device can't be
read from.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: We don't need to runtime resume by default
Mark Brown [Mon, 6 Feb 2012 18:37:08 +0000 (18:37 +0000)]
ASoC: wm8994: We don't need to runtime resume by default

This is the default state that the runtime PM infrastructure expects so
instead just kick the runtime PM core to suspend us if we're not doing
anything (as is default).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoIB/srpt: Don't return freed pointer from srpt_alloc_ioctx_ring()
Jesper Juhl [Sat, 4 Feb 2012 22:49:40 +0000 (23:49 +0100)]
IB/srpt: Don't return freed pointer from srpt_alloc_ioctx_ring()

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Roland Dreier <roland@purestorage.com>
12 years agoASoC: max9768: Fix build and use new add control API.
Liam Girdwood [Mon, 6 Feb 2012 16:50:58 +0000 (16:50 +0000)]
ASoC: max9768: Fix build and use new add control API.

Fix build breakage by using the correct API call to add kcontrols.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: tlv320aic3x: remove unused code
Felipe Contreras [Wed, 1 Feb 2012 01:06:20 +0000 (03:06 +0200)]
ASoC: tlv320aic3x: remove unused code

Looks like nobody is or will be using this code.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: dapm: Clean up header information.
Liam Girdwood [Mon, 6 Feb 2012 16:05:29 +0000 (16:05 +0000)]
ASoC: dapm: Clean up header information.

Fix some spelling mistakes in the header and remove the todo items. Most
todo items are now available as kcontrol options now anyway.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: dapm: Export mixer|mux_update_power() to public API.
Liam Girdwood [Mon, 6 Feb 2012 16:05:14 +0000 (16:05 +0000)]
ASoC: dapm: Export mixer|mux_update_power() to public API.

Allow for the operation of custom mixer and mux DAPM widgets that can call
snd_soc_dapm_mixer_update_power() and snd_soc_dapm_mux_update_power() directly
after updating their status. This is useful with complex DAPM Mixer operations
where we need to do additional work in addition to setting a few mixer register
bits.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoHID: wacom: Fix invalid power_supply_powers calls
Przemo Firszt [Sun, 5 Feb 2012 22:35:24 +0000 (22:35 +0000)]
HID: wacom: Fix invalid power_supply_powers calls

power_supply_powers calls added in 35b4c01e2 ("power_supply: add "powers" links
to self-powered HID devices") have to be called after power device is created.
This patch also fixes the second call - it has to be "ac" instead of "battery"

Signed-off-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...
Jiri Kosina [Mon, 6 Feb 2012 15:11:09 +0000 (16:11 +0100)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into upstream-fixes

Sync with Linus' tree. This is necessary to have a base for
patch that fixes commit 35b4c01e29b ("power_supply: add "powers"
links to self-powered HID devices") which went in through Anton's
tree.

12 years agoASoC: wm8994: Don't bring up to STANDBY by default
Mark Brown [Fri, 3 Feb 2012 15:22:16 +0000 (15:22 +0000)]
ASoC: wm8994: Don't bring up to STANDBY by default

In cases where we should enter STANDBY DAPM will power us up, otherwise
there is no need to power up and we can remain in OFF.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: samsung: Enable accessory detect for WM8994 on Littlemill
Mark Brown [Fri, 3 Feb 2012 13:15:18 +0000 (13:15 +0000)]
ASoC: samsung: Enable accessory detect for WM8994 on Littlemill

The WM8994 has a different accessory detect architecture, call its setup
function too. We ignore the errors and the driver will check for chip type
so it's safe to call the setup functions for both architectures.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Enabling VMID should take a runtime PM reference
Mark Brown [Mon, 6 Feb 2012 12:07:08 +0000 (12:07 +0000)]
ASoC: wm8994: Enabling VMID should take a runtime PM reference

We can enable VMID independently of the bias in some use cases so we need
to ensure that the core device is powered up.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
12 years agoALSA: hda/realtek - Fix a wrong condition
Takashi Iwai [Mon, 6 Feb 2012 09:24:04 +0000 (10:24 +0100)]
ALSA: hda/realtek - Fix a wrong condition

sparse complains that "spec->multiout.dac_nids" is a pointer.

sound/pci/hda/patch_realtek.c:2321:37: error: incompatible types for operation (>)
sound/pci/hda/patch_realtek.c:2321:37:    left side has type unsigned short const [usertype] *dac_nids
sound/pci/hda/patch_realtek.c:2321:37:    right side has type int

It was meant to be num_dacs instead of dac_nids.
Although the current code still works as expected (when num_dacs is zero,
dac_nids should be NULL, too), better to fix now, of course.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoALSA: emu8000: Remove duplicate linux/moduleparam.h include from emu8000_patch.c
Jesper Juhl [Sun, 5 Feb 2012 00:27:44 +0000 (01:27 +0100)]
ALSA: emu8000: Remove duplicate linux/moduleparam.h include from emu8000_patch.c

The header 'linux/moduleparam.h' is included twice in
'sound/isa/sb/emu8000_patch.c'. Once is enough.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agospi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driver
Danny Kukawka [Thu, 2 Feb 2012 13:20:30 +0000 (14:20 +0100)]
spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driver

Rename static struct pci_driver pch_spi_pcidev to
pch_spi_pcidev_driver to get rid of warnings from modpost checks.

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
12 years agospi: Add spi-s3c64xx driver dependency on ARCH_EXYNOS4
Sylwester Nawrocki [Wed, 25 Jan 2012 16:20:59 +0000 (17:20 +0100)]
spi: Add spi-s3c64xx driver dependency on ARCH_EXYNOS4

The spi-s3c64xx driver is also used on Exynos4 so update the dependency
to enable build on those platforms.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[grant.likely: relax depends to ARCH_EXYNOS instead of ARCH_EXYNOS4]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
12 years agohwmon: (w83627ehf) Fix number of fans for NCT6776F
Guenter Roeck [Fri, 27 Jan 2012 13:43:59 +0000 (05:43 -0800)]
hwmon: (w83627ehf) Fix number of fans for NCT6776F

NCT6776F can select fan input pins for fans 3 to 5 with a secondary set of
chip register bits. Check that second set of bits in addition to the first set
to detect if fans 3..5 are monitored.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org # 3.0+
Acked-by: Jean Delvare <khali@linux-fr.org>
12 years agoMerge tag 'pm-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 4 Feb 2012 23:21:39 +0000 (15:21 -0800)]
Merge tag 'pm-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Power management fixes for 3.3-rc3

Three power management regression fixes, one for a recent regression introcuded
by the freezer changes during the 3.3 merge window and two for regressions
in cpuidle (resulting from PM QoS changes) and in the hibernate user space
interface, both introduced during the 3.2 development cycle.

They include:

* Two hibernate (s2disk) regression fixes from Srivatsa S. Bhat (for
 regressions introduced during the 3.3 merge window and during the 3.2
 development cycle).

* A cpuidle fix from Venki Pallipadi for a regression resulting from PM QoS
 changes during the 3.2 development cycle causing cpuidle to work incorrectly
 for CONFIG_PM unset.

* tag 'pm-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / QoS: CPU C-state breakage with PM Qos change
  PM / Freezer: Thaw only kernel threads if freezing of kernel threads fails
  PM / Hibernate: Thaw kernel threads in SNAPSHOT_CREATE_IMAGE ioctl path

12 years agoPM / QoS: CPU C-state breakage with PM Qos change
Venkatesh Pallipadi [Fri, 3 Feb 2012 21:22:25 +0000 (22:22 +0100)]
PM / QoS: CPU C-state breakage with PM Qos change

Looks like change "PM QoS: Move and rename the implementation files"
merged during the 3.2 development cycle made PM QoS depend on
CONFIG_PM which depends on (PM_SLEEP || PM_RUNTIME).

That breaks CPU C-states with kernels not having these CONFIGs, causing CPUs
to spend time in Polling loop idle instead of going into deep C-states,
consuming way way more power. This is with either acpi idle or intel idle
enabled.

Either CONFIG_PM should be enabled with any pm_qos users or
the !CONFIG_PM pm_qos_request() should return sane defaults not to break
the existing users. Here's is the patch for the latter option.

[rjw: Modified the changelog slightly.]

Signed-off-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@vger.kernel.org
12 years agoPM / Freezer: Thaw only kernel threads if freezing of kernel threads fails
Srivatsa S. Bhat [Fri, 3 Feb 2012 21:22:41 +0000 (22:22 +0100)]
PM / Freezer: Thaw only kernel threads if freezing of kernel threads fails

If freezing of kernel threads fails, we are expected to automatically
thaw tasks in the error recovery path. However, at times, we encounter
situations in which we would like the automatic error recovery path
to thaw only the kernel threads, because we want to be able to do
some more cleanup before we thaw userspace. Something like:

error = freeze_kernel_threads();
if (error) {
/* Do some cleanup */

/* Only then thaw userspace tasks*/
thaw_processes();
}

An example of such a situation is where we freeze/thaw filesystems
during suspend/hibernation. There, if freezing of kernel threads
fails, we would like to thaw the frozen filesystems before thawing
the userspace tasks.

So, modify freeze_kernel_threads() to thaw only kernel threads in
case of freezing failure. And change suspend_freeze_processes()
accordingly. (At the same time, let us also get rid of the rather
cryptic usage of the conditional operator (:?) in that function.)

[rjw: In fact, this patch fixes a regression introduced during the
 3.3 merge window, because without it thaw_processes() may be called
 before swsusp_free() in some situations and that may lead to massive
 memory allocation failures.]

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>