GitHub/LineageOS/android_kernel_samsung_universal7580.git
12 years agoASoC: bf5xx-ssm2602: Setup sysclock in init callback
Lars-Peter Clausen [Wed, 25 Apr 2012 09:34:54 +0000 (11:34 +0200)]
ASoC: bf5xx-ssm2602: Setup sysclock in init callback

The sysclock is fixed, so just set it up once in the init callback instead of
setting it repeatably in the hw_params callback.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Make sure we disable FLL bypass when stopping the FLL
Kyung-Kwee Ryu [Tue, 24 Apr 2012 17:01:48 +0000 (18:01 +0100)]
ASoC: wm8994: Make sure we disable FLL bypass when stopping the FLL

If FLL bypass is left enabled when we disable the CODEC then the output
clock will be left running which consumes a small amount of additional
current. Only enable bypass when there is an output.

Signed-off-by: Kyung-Kwee Ryu <Kyung-Kwee.Ryu@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: core: Add strobe control
Kristoffer KARLSSON [Fri, 20 Apr 2012 09:32:44 +0000 (11:32 +0200)]
ASoC: core: Add strobe control

Added support for a control that strobes a bit in
a register to high then back to low (or the inverse).

This is typically useful for hardware that requires
strobing a singe bit to trigger some functionality
and where exposing the bit in a normal single control
would require the user to first manually set then
again unset the bit again for the strobe to trigger.

Added convenience macro.

SOC_SINGLE_STROBE

Added accessor implementations.

snd_soc_get_strobe
snd_soc_put_strobe

Signed-off-by: Kristoffer KARLSSON <kristoffer.karlsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: core: Add signed multi register control
Kristoffer KARLSSON [Fri, 20 Apr 2012 09:32:13 +0000 (11:32 +0200)]
ASoC: core: Add signed multi register control

Added control type that can span multiple consecutive codec registers
forming a single signed value in a MSB/LSB manner.
The control dynamically adjusts to the register word size configured
in driver.

Added convenience macro.

SOC_SINGLE_XR_SX

Added accessor implementations.

snd_soc_info_xr_sx
snd_soc_get_xr_sx
snd_soc_put_xr_sx

Signed-off-by: Kristoffer KARLSSON <kristoffer.karlsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Delete trailing whitespace from sound/soc/codecs/wm8994.c
Jesper Juhl [Sun, 8 Apr 2012 22:40:32 +0000 (00:40 +0200)]
ASoC: wm8994: Delete trailing whitespace from sound/soc/codecs/wm8994.c

While reading through sound/soc/codecs/wm8994.c I noticed a fair
amount of trailing whitespace. This patch gets rid of it.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: Update regmap access for WM5100 DSP control registers
Mark Brown [Wed, 2 Nov 2011 14:57:52 +0000 (14:57 +0000)]
ASoC: Update regmap access for WM5100 DSP control registers

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: dapm: Fix x86_64 build warning.
Liam Girdwood [Mon, 23 Apr 2012 09:31:15 +0000 (10:31 +0100)]
ASoC: dapm: Fix x86_64 build warning.

Fixes the following build warning on x86_64.

In file included from include/trace/ftrace.h:567:0,
                 from include/trace/define_trace.h:86,
                 from include/trace/events/asoc.h:410,
                 from sound/soc/soc-core.c:45:
include/trace/events/asoc.h: In function 'ftrace_raw_event_snd_soc_dapm_output_path':
include/trace/events/asoc.h:246:1: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
include/trace/events/asoc.h: In function 'ftrace_raw_event_snd_soc_dapm_input_path':
include/trace/events/asoc.h:275:1: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm1250-ev1: Support sample rate configuration
Mark Brown [Mon, 9 Apr 2012 18:40:00 +0000 (19:40 +0100)]
ASoC: wm1250-ev1: Support sample rate configuration

The Springbank module can support a range of sample rates, selected at
runtime via GPIO configuration. Allow these to be configured at runtime.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm1250-ev1: Support stereo
Mark Brown [Mon, 9 Apr 2012 18:38:31 +0000 (19:38 +0100)]
ASoC: wm1250-ev1: Support stereo

Springbank can support stereo, though it is primarily intended for mono
use cases.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: dapm: Add API call to query valid DAPM paths
Liam Girdwood [Wed, 18 Apr 2012 10:41:11 +0000 (11:41 +0100)]
ASoC: dapm: Add API call to query valid DAPM paths

In preparation for ASoC DSP support.

Add a DAPM API call to determine whether a DAPM audio path is valid between
source and sink widgets. This also takes into account all kcontrol mux and mixer
settings in between the source and sink widgets to validate the audio path.

This will be used by the DSP core to determine the runtime DAI mappings
between FE and BE DAIs in order to run PCM operations.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: samsung: Hook up AIF2 to the CODEC on Littlemill
Mark Brown [Wed, 18 Apr 2012 17:20:05 +0000 (18:20 +0100)]
ASoC: samsung: Hook up AIF2 to the CODEC on Littlemill

Connect the WM1250-EV1 baseband simulator on Littlemill systems up to
the CODEC AIF2 using the new CODEC<->CODEC link support, allowing a wider
range of use cases to be represented.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: wm8994: Keep AIF3 tristated when not in use
Mark Brown [Tue, 17 Apr 2012 19:49:05 +0000 (20:49 +0100)]
ASoC: wm8994: Keep AIF3 tristated when not in use

Since AIF3 shares clock signals with other audio interfaces in order to
ensure it doesn't drive undesirable clocks we need to tristate it. Rather
than forcing the machine driver to do so have the driver do this.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: da7210: Minor update for PLL and SRM
Ashish Chavan [Tue, 17 Apr 2012 15:37:44 +0000 (21:07 +0530)]
ASoC: da7210: Minor update for PLL and SRM

This patch converts multiple if conditions in to single if with "&&"s.

Signed-off-by: Ashish Chavan <ashish.chavan@kpitcummins.com>
Signed-off-by: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: da7210: Add support for PLL and SRM
Ashish Chavan [Tue, 17 Apr 2012 12:34:06 +0000 (18:04 +0530)]
ASoC: da7210: Add support for PLL and SRM

Current DA7210 driver does support PLL mode fully. It uses fixed
value of input master clock and PLL mode is enabled and disabled based
on the sampling frequency being used for playback or recording. It also
doesn't support Sample Rate Measurement feature of DA7210 hardware.

This patch adds full support for PLL and SRM. Basically following three
modes of operation are possible for DA7210 hardware,

(1) I2S SLAVE mode with PLL bypassed
(2) I2S SLAVE mode with PLL enabled
(3) I2S Master mode with PLL enabled

This patch adds support for all three modes. Also, in case of SLAVE mode
with PLL, it supports SRM (Sample Rate Measurement) feature of the chip.

Actually this patch was submitted earlier and received some review
comments, but after that the driver got update by other patches. Because
of that, I am considering this as new patch and not versioning it based
of previous patches. This version tries to take care of all review
comments received for earlier submissions.

Signed-off-by: Ashish Chavan <ashish.chavan@kpitcummins.com>
Signed-off-by: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: Use dai_fmt in Speyside
Mark Brown [Tue, 27 Sep 2011 15:48:49 +0000 (16:48 +0100)]
ASoC: Use dai_fmt in Speyside

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: Merge tag 'v3.4-rc3' into for-3.5
Mark Brown [Mon, 16 Apr 2012 18:40:27 +0000 (19:40 +0100)]
ASoC: Merge tag 'v3.4-rc3' into for-3.5

Linux 3.4-rc3 contains a bunch of Tegra changes which are conflicting
annoyingly with the new development that's going on for Tegra so merge
it up to resolve those conflicts.

Conflicts:
sound/soc/soc-core.c
sound/soc/tegra/tegra_i2s.c
sound/soc/tegra/tegra_spdif.c

12 years agoASoC: soc-dapm: Use '%llx' with 'u64' type.
Fabio Estevam [Mon, 16 Apr 2012 13:53:09 +0000 (10:53 -0300)]
ASoC: soc-dapm: Use '%llx' with 'u64' type.

Fix the following build warning:

sound/soc/soc-dapm.c: In function 'snd_soc_dai_link_event':
sound/soc/soc-dapm.c:2913: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'u64'

'%llx' should be used with 'u64' type.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: core: Support transparent CODEC<->CODEC DAI links
Mark Brown [Wed, 4 Apr 2012 21:12:09 +0000 (22:12 +0100)]
ASoC: core: Support transparent CODEC<->CODEC DAI links

Rather than having the user half start a stream but avoid any DMA to
trigger data flow on links which don't pass through the CPU create a
DAPM route between the two DAI widgets using a hw_params configuration
provided by the machine driver with the new 'params' member of the
dai_link struct.  If no configuration is provided in the dai_link then
use the old style even for CODEC<->CODEC links to avoid breaking
systems.

This greatly simplifies the userspace usage of such links, making them
as simple as analogue connections with the stream configuration being
completely transparent to them.

This is achieved by defining a new dai_link widget type which is created
when CODECs are linked and triggering the configuration of the link via
the normal PCM operations from there.  It is expected that the bias
level callbacks will be used for clock configuration.

Currently only the DAI format, rate and channel count can be configured
and currently the only DAI operations which can be called are hw_params
and digital_mute().  This corresponds well to the majority of CODEC
drivers which only use other callbacks for constraint setting but there
is obviously much room for extension here.  We can't simply call
hw_params() on startup as things like the system clocking configuration
may change at runtime and in future it will be desirable to offer some
configurability of the link parameters.

At present we are also restricted to a single DAPM link for the entire
DAI.  Once we have better support for channel mapping it would also be
desirable to extend this feature so that we can propagate per-channel
power state over the link.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
12 years agoASoC: core: Bind DAIs to CODECs at registration time
Mark Brown [Mon, 9 Apr 2012 16:29:19 +0000 (17:29 +0100)]
ASoC: core: Bind DAIs to CODECs at registration time

We should always have a CODEC already there when registering a CODEC DAI
and for CODEC<->CODEC links a dai_link will have two CODECs so it's much
simpler to do things at registration time.

This results in a slight change in the error handling for failed CODEC
DAI registrations but practically speaking these are never supposed to
fail so there shouldn't be much issue. The change is that we don't fail
the overall CODEC registration if the DAI registration fails; this seems
more robust anyway as we may not need to use a given DAI in a particular
system.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: core: Flip master for CODECs in the CPU slot of a CODEC<->CODEC link
Mark Brown [Mon, 9 Apr 2012 15:29:21 +0000 (16:29 +0100)]
ASoC: core: Flip master for CODECs in the CPU slot of a CODEC<->CODEC link

When two CODEC DAIs are linked directly to each other then if we give the
same master mode settings to both devices things won't work as either
neither will drive or they'll drive against each other. Flip the settings
for the DAI in the CPU slot of the DAI link.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: dapm: Allow DAI widgets to be routed through
Mark Brown [Tue, 10 Apr 2012 12:57:46 +0000 (13:57 +0100)]
ASoC: dapm: Allow DAI widgets to be routed through

In order to allow CODEC<->CODEC links to function we will need to allow
DAPM paths to be created that pass through DAIs rather than only ones
that are source or sunk at the DAI.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
12 years agoASoC: core: Return -ENOTSUPP instead of -EINVAL if mute is not supported
Mark Brown [Fri, 13 Apr 2012 18:16:03 +0000 (19:16 +0100)]
ASoC: core: Return -ENOTSUPP instead of -EINVAL if mute is not supported

This helps us ignore errors in callers if the operation failed due to not
being available as opposed to an error.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
12 years agoLinux 3.4-rc3
Linus Torvalds [Mon, 16 Apr 2012 01:28:29 +0000 (18:28 -0700)]
Linux 3.4-rc3

12 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Mon, 16 Apr 2012 00:35:19 +0000 (17:35 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Nothing too disasterous, the biggest thing being the removal of the
  regulator support for vcore in the AMBA driver; only one SoC was using
  this and it got broken during the last merge window, which then
  started causing problems for other people.  Mutual agreement was
  reached for it to be removed."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7386/1: jump_label: fixup for rename to static_key
  ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
  ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
  ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
  ARM: 7383/1: nommu: populate vectors page from paging_init
  ARM: 7381/1: nommu: fix typo in mm/Kconfig
  ARM: 7380/1: DT: do not add a zero-sized memory property
  ARM: 7379/1: DT: fix atags_to_fdt() second call site
  ARM: 7366/3: amba: Remove AMBA level regulator support
  ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler
  ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented

12 years agox86-32: fix up strncpy_from_user() sign error
Linus Torvalds [Mon, 16 Apr 2012 00:23:00 +0000 (17:23 -0700)]
x86-32: fix up strncpy_from_user() sign error

The 'max' range needs to be unsigned, since the size of the user address
space is bigger than 2GB.

We know that 'count' is positive in 'long' (that is checked in the
caller), so we will truncate 'max' down to something that fits in a
signed long, but before we actually do that, that comparison needs to be
done in unsigned.

Bug introduced in commit 92ae03f2ef99 ("x86: merge 32/64-bit versions of
'strncpy_from_user()' and speed it up").  On x86-64 you can't trigger
this, since the user address space is much smaller than 63 bits, and on
x86-32 it works in practice, since you would seldom hit the strncpy
limits anyway.

I had actually tested the corner-cases, I had only tested them on
x86-64.  Besides, I had only worried about the case of a pointer *close*
to the end of the address space, rather than really far away from it ;)

This also changes the "we hit the user-specified maximum" to return
'res', for the trivial reason that gcc seems to generate better code
that way.  'res' and 'count' are the same in that case, so it really
doesn't matter which one we return.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoARM: 7386/1: jump_label: fixup for rename to static_key
Rabin Vincent [Sat, 14 Apr 2012 20:51:32 +0000 (21:51 +0100)]
ARM: 7386/1: jump_label: fixup for rename to static_key

c5905afb0 ("static keys: Introduce 'struct static_key'...") renamed
struct jump_label_key to struct static_key.  Fixup ARM for this to
eliminate these build warnings:

  include/linux/jump_label.h:113:2:
  warning: passing argument 1 of 'arch_static_branch' from incompatible pointer type
  include/asm/jump_label.h:17:82:
  note: expected 'struct jump_label_key *' but argument is of type 'struct static_key *'

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
Jonathan Austin [Thu, 12 Apr 2012 16:45:25 +0000 (17:45 +0100)]
ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE

Currently when ThumbEE is not enabled (!CONFIG_ARM_THUMBEE) the ThumbEE
register states are not saved/restored at context switch. The default state
of the ThumbEE Ctrl register (TEECR) allows userspace accesses to the
ThumbEE Base Handler register (TEEHBR). This can cause unexpected behaviour
when people use ThumbEE on !CONFIG_ARM_THUMBEE kernels, as well as allowing
covert communication - eg between userspace tasks running inside chroot
jails.

This patch sets up TEECR in order to prevent user-space access to TEEHBR
when !CONFIG_ARM_THUMBEE. In this case, tasks are sent SIGILL if they try to
access TEEHBR.

Cc: stable@vger.kernel.org
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
Will Deacon [Thu, 12 Apr 2012 16:15:08 +0000 (17:15 +0100)]
ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU

If a bank of memory spanning the 4GB boundary is added on a !CONFIG_LPAE
kernel then we will hang early during boot since the memory bank will
have wrapped around to zero.

This patch truncates memory banks for !LPAE configurations when the end
address is not representable in 32 bits.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
Linus Walleij [Tue, 10 Apr 2012 11:37:42 +0000 (12:37 +0100)]
ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus

During booting of cpu1, there is a short window where cpu1
is online, but not active where cpu1 is occupied by waiting
to become active. If cpu0 then decides to schedule something
on cpu1 and wait for it to complete, before cpu0 has set
cpu1 active, we have a deadlock.

Typically it's this CPU frequency transition that happens at
this time, so let's just not wait for it to happen, it will
happen whenever the CPU eventually comes online instead.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoPCI: Fix regression in pci_restore_state(), v3
Rafael J. Wysocki [Sun, 15 Apr 2012 19:40:40 +0000 (21:40 +0200)]
PCI: Fix regression in pci_restore_state(), v3

Commit 26f41062f28d ("PCI: check for pci bar restore completion and
retry") attempted to address problems with PCI BAR restoration on
systems where FLR had not been completed before pci_restore_state() was
called, but it did that in an utterly wrong way.

First off, instead of retrying the writes for the BAR registers only, it
did that for all of the PCI config space of the device, including the
status register (whose value after the write quite obviously need not be
the same as the written one).  Second, it added arbitrary delay to
pci_restore_state() even for systems where the PCI config space
restoration was successful at first attempt.  Finally, the mdelay(10) it
added to every iteration of the writing loop was way too much of a delay
for any reasonable device.

All of this actually caused resume failures for some devices on Mikko's
system.

To fix the regression, make pci_restore_state() only retry the writes
for BAR registers and only wait if the first read from the register
doesn't return the written value.  Additionaly, make it wait for 1 ms,
instead of 10 ms, after every failing attempt to write into config
space.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sun, 15 Apr 2012 18:14:54 +0000 (11:14 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull "ARM: a few more SoC fixes for 3.4-rc" from Olof Johansson:
 - A handful of warning and build fixes for Qualcomm MSM
 - Build/warning and bug fixes for Samsung Exynos
 - A fix from Rob Herring that removes misplaced interrupt-parent
   properties from a few device trees
 - A fix to OMAP dealing with cpufreq build errors, removing some of the
   offending code since it was redundant anyway

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors
  ARM: dts: remove blank interrupt-parent properties
  ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
  ARM: EXYNOS: Remove broken config values for touchscren for NURI board
  ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
  ARM: EXYNOS: fix regulator name for NURI board
  ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
  ARM: msm: Fix section mismatches in proc_comm.c
  video: msm: Fix section mismatches in mddi.c
  arm: msm: trout: fix compile failure
  arm: msm: halibut: remove unneeded fixup
  ARM: EXYNOS: Add PDMA and MDMA physical base address defines
  ARM: S5PV210: Fix compiler warning in dma.c file
  ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c
  ARM: EXYNOS: Add missing definition for IRQ_I2S0
  ARM: S5PV210: fix unused LDO supply field from wm8994_pdata

12 years agoMerge tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Sun, 15 Apr 2012 18:14:07 +0000 (11:14 -0700)]
Merge tag 'sound-3.4' of git://git./linux/kernel/git/tiwai/sound

Pull another round of sound fixes from Takashi Iwai:
 "A few regression fixes for Realtek HD-audio codecs, mainly specific to
  some laptop models."

* tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek - Fix mem leak (and rid us of trailing whitespace).
  ALSA: hda/realtek - Add quirk for Mac Pro 5,1 machines
  ALSA: hda/realtek - Add a fixup entry for Acer Aspire 8940G
  ALSA: hda/realtek - Fix GPIO1 setup for Acer Aspire 4930 & co
  ALSA: hda/realtek - Add a few ALC882 model strings back

12 years agoSCSI: Fix error handling when no ULD is attached
Martin K. Petersen [Sun, 15 Apr 2012 03:01:28 +0000 (23:01 -0400)]
SCSI: Fix error handling when no ULD is attached

Commit 18a4d0a22ed6 ("[SCSI] Handle disk devices which can not process
medium access commands") introduced a bug in which we would attempt to
dereference the scsi driver even when the device had no ULD attached.

Ensure that a driver is registered and make the driver accessor function
more resilient to errors during device discovery.

Reported-by: Elric Fu <elricfu1@gmail.com>
Reported-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoASoC: dapm: release lock on error paths
Dan Carpenter [Fri, 13 Apr 2012 19:25:43 +0000 (22:25 +0300)]
ASoC: dapm: release lock on error paths

We added locking here but there were a couple error paths where we
forgot to drop the lock before returning.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoMerge branch 'v3.4-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Sun, 15 Apr 2012 00:50:45 +0000 (17:50 -0700)]
Merge branch 'v3.4-samsung-fixes-2' of git://git./linux/kernel/git/kgene/linux-samsung into fixes

* 'v3.4-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
  ARM: EXYNOS: Remove broken config values for touchscren for NURI board
  ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
  ARM: EXYNOS: fix regulator name for NURI board
  ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
  ARM: EXYNOS: Add PDMA and MDMA physical base address defines
  ARM: S5PV210: Fix compiler warning in dma.c file
  ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c
  ARM: EXYNOS: Add missing definition for IRQ_I2S0
  ARM: S5PV210: fix unused LDO supply field from wm8994_pdata

12 years agoARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors
Kevin Hilman [Fri, 13 Apr 2012 20:52:15 +0000 (13:52 -0700)]
ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors

Now that we have OPP layer, and OMAP CPUfreq driver is using it, we no
longer need/use the clock framework code for filling up CPUfreq
tables.  Remove it.

Removing this code also eliminates build errors when CPU_FREQ_TABLE
support is not enabled.

Thanks to Russell King for pointing out the parts I missed under
plat-omap in the original version and also pointing out the build
errors when CPUFREQ_TABLE support was not enabled.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
12 years agoARM: dts: remove blank interrupt-parent properties
Rob Herring [Thu, 12 Apr 2012 15:17:28 +0000 (10:17 -0500)]
ARM: dts: remove blank interrupt-parent properties

These were incorrectly introduced and can cause problems for of_irq_init.

The correct way to define a root controller is no interrupt-parent set at
all or the interrupt-parent is set to the root controller itself when
inherited from a parent node.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Tested-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
12 years agoMerge branch 'msm-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux...
Olof Johansson [Sun, 15 Apr 2012 00:44:21 +0000 (17:44 -0700)]
Merge branch 'msm-fix' of git://git./linux/kernel/git/davidb/linux-msm into fixes

From David Brown:
  "Here are some fixes for msm that fix problems caused by the latest
   ARM code.  The ones from Daniel remove unneeded fixups that now
   cause compilation failures.  Mine fix section mismatches, that were
   incompletely fixed earlier."

* 'msm-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm:
  ARM: msm: Fix section mismatches in proc_comm.c
  video: msm: Fix section mismatches in mddi.c
  arm: msm: trout: fix compile failure
  arm: msm: halibut: remove unneeded fixup

12 years agoARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
Sachin Kamat [Sat, 14 Apr 2012 14:53:51 +0000 (07:53 -0700)]
ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files

Add config dependency for Exynos4 and Exynos5 device tree enabled machine
files on config options ARCH_EXYNOS4 and ARCH_EXYNOS5 respectively.
Enabling machine support without proper ARCH support enabled is incorrect.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
12 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 14 Apr 2012 14:48:13 +0000 (07:48 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf tool fixes from Ingo Molnar.

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf kvm: Finding struct machine fails for PERF_RECORD_MMAP
  perf annotate: Validate addr in symbol__inc_addr_samples
  perf hists browser: Fix NULL deref in hists browsing code
  perf hists: Catch and handle out-of-date hist entry maps.
  perf annotate: Fix hist decay
  perf top: Add intel_idle to the skip list

12 years agodo not export kernel's NULL #define to userspace
Lubos Lunak [Wed, 21 Mar 2012 13:08:24 +0000 (14:08 +0100)]
do not export kernel's NULL #define to userspace

GCC's NULL is actually __null, which allows detecting some questionable
NULL usage and warn about it.  Moreover each platform/compiler should
have its own stddef.h anyway (which is different from linux/stddef.h).

So there's no good reason to leak kernel's NULL to userspace and
override what the compiler provides.

Signed-off-by: Luboš Luňák <l.lunak@suse.cz>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoARM: EXYNOS: Remove broken config values for touchscren for NURI board
Marek Szyprowski [Tue, 10 Apr 2012 04:10:32 +0000 (21:10 -0700)]
ARM: EXYNOS: Remove broken config values for touchscren for NURI board

The atmel_mxt_ts driver has been extended to support more 'configuration
objects' in commit 81c88a711 ("Input: atmel_mxt_ts - update object list"),
what broke the configuration values for NURI board. These values are
optional anyway, so remove them to get the driver working correctly.

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>
12 years agoARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
Marek Szyprowski [Tue, 10 Apr 2012 04:10:32 +0000 (21:10 -0700)]
ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards

On some versions of NURI and UniversalC210 boards, camera clocks are
routed directly to xusbxti clock source. This patch sets the correct
value for this clock to let usb and camera sensors to work correctly and
avoid division by zero on driver's probe.

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>
12 years agoARM: EXYNOS: fix regulator name for NURI board
Marek Szyprowski [Tue, 10 Apr 2012 04:10:32 +0000 (21:10 -0700)]
ARM: EXYNOS: fix regulator name for NURI board

Regulator names should not contain slash to avoid issues with debugfs.

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>
12 years agoARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
Maurus Cuelenaere [Sat, 14 Apr 2012 14:42:04 +0000 (07:42 -0700)]
ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL

When selecting SAMSUNG_PM_DEBUG, it complains about a missing printascii()
function if you do not select DEBUG_LL, so make the former select the latter.

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
12 years agoMerge branch 'systemh-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg...
Linus Torvalds [Sat, 14 Apr 2012 02:44:36 +0000 (19:44 -0700)]
Merge branch 'systemh-fixes' of git://git./linux/kernel/git/paulg/linux

Pull system.h fixups for less common arch's from Paul Gortmaker:
 "Here is what is hopefully the last of the system.h related fixups.

  The fixes for Alpha and ia64 are code relocations consistent with what
  was done for the more mainstream architectures.  Note that the
  diffstat lines removed vs lines added are not the same since I've
  fixed some of the whitespace issues in the relocated code blocks.
  However they are functionally the same.  Compile tested locally, plus
  these two have been in linux-next for a while.

  There is also a trivial one line system.h related fix for the Tilera
  arch from Chris Metcalf to fix an implict include.."

* 'systemh-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  irq_work: fix compile failure on tile from missing include
  ia64: populate the cmpxchg header with appropriate code
  alpha: fix build failures from system.h dismemberment

12 years agoMerge tag 'fbdev-fixes-for-3.4-1' of git://github.com/schandinat/linux-2.6
Linus Torvalds [Sat, 14 Apr 2012 02:42:56 +0000 (19:42 -0700)]
Merge tag 'fbdev-fixes-for-3.4-1' of git://github.com/schandinat/linux-2.6

Pull fbdev fixes from Florian Tobias Schandinat:
 - a compile fix for au1*fb
 - a fix to make kyrofb usable on x86_64
 - a fix for uvesafb to prevent an oops due to NX-protection

 "The fix for kyrofb is a bit large but it's just replacing "unsigned
  long" by "u32" for 64 bit compatibility."

* tag 'fbdev-fixes-for-3.4-1' of git://github.com/schandinat/linux-2.6:
  video:uvesafb: Fix oops that uvesafb try to execute NX-protected page
  fbdev: fix au1*fb builds
  kyrofb: fix on x86_64

12 years agoMerge branch 'for-linus-min' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
Linus Torvalds [Sat, 14 Apr 2012 02:41:27 +0000 (19:41 -0700)]
Merge branch 'for-linus-min' of git://git./linux/kernel/git/mason/linux-btrfs

Pull the minimal btrfs branch from Chris Mason:
 "We have a use-after-free in there, along with errors when mount -o
  discard is enabled, and a BUG_ON(we should compile with UP more
  often)."

* 'for-linus-min' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: use commit root when loading free space cache
  Btrfs: fix use-after-free in __btrfs_end_transaction
  Btrfs: check return value of bio_alloc() properly
  Btrfs: remove lock assert from get_restripe_target()
  Btrfs: fix eof while discarding extents
  Btrfs: fix uninit variable in repair_eb_io_failure
  Revert "Btrfs: increase the global block reserve estimates"

12 years agoMerge branch 'for-3.4/drivers' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 14 Apr 2012 01:45:13 +0000 (18:45 -0700)]
Merge branch 'for-3.4/drivers' of git://git.kernel.dk/linux-block

Pull block driver bits from Jens Axboe:

 - A series of fixes for mtip32xx.  Most from Asai at Micron, but also
   one from Greg, getting rid of the dependency on PCIE_HOTPLUG.

 - A few bug fixes for xen-blkfront, and blkback.

 - A virtio-blk fix for Vivek, making resize actually work.

 - Two fixes from Stephen, making larger transfers possible on cciss.
   This is needed for tape drive support.

* 'for-3.4/drivers' of git://git.kernel.dk/linux-block:
  block: mtip32xx: remove HOTPLUG_PCI_PCIE dependancy
  mtip32xx: dump tagmap on failure
  mtip32xx: fix handling of commands in various scenarios
  mtip32xx: Shorten macro names
  mtip32xx: misc changes
  mtip32xx: Add new sysfs entry 'status'
  mtip32xx: make setting comp_time as common
  mtip32xx: Add new bitwise flag 'dd_flag'
  mtip32xx: fix error handling in mtip_init()
  virtio-blk: Call revalidate_disk() upon online disk resize
  xen/blkback: Make optional features be really optional.
  xen/blkback: Squash the discard support for 'file' and 'phy' type.
  mtip32xx: fix incorrect value set for drv_cleanup_done, and re-initialize and start port in mtip_restart_port()
  cciss: Fix scsi tape io with more than 255 scatter gather elements
  cciss: Initialize scsi host max_sectors for tape drive support
  xen-blkfront: make blkif_io_lock spinlock per-device
  xen/blkfront: don't put bdev right after getting it
  xen-blkfront: use bitmap_set() and bitmap_clear()
  xen/blkback: Enable blkback on HVM guests
  xen/blkback: use grant-table.c hypercall wrappers

12 years agoMerge branch 'for-3.4/core' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 14 Apr 2012 01:07:19 +0000 (18:07 -0700)]
Merge branch 'for-3.4/core' of git://git.kernel.dk/linux-block

Pull block core bits from Jens Axboe:
 "It's a nice and quiet round this time, since most of the tricky stuff
  has been pushed to 3.5 to give it more time to mature.  After a few
  hectic block IO core changes for 3.3 and 3.2, I'm quite happy with a
  slow round.

  Really minor stuff in here, the only real functional change is making
  the auto-unplug threshold a per-queue entity.  The threshold is set so
  that it's low enough that we don't hold off IO for too long, but still
  big enough to get a nice benefit from the batched insert (and hence
  queue lock cost reduction).  For raid configurations, this currently
  breaks down."

* 'for-3.4/core' of git://git.kernel.dk/linux-block:
  block: make auto block plug flush threshold per-disk based
  Documentation: Add sysfs ABI change for cfq's target latency.
  block: Make cfq_target_latency tunable through sysfs.
  block: use lockdep_assert_held for queue locking
  block: blk_alloc_queue_node(): use caller's GFP flags instead of GFP_KERNEL

12 years agocpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS
Kevin Hilman [Fri, 13 Apr 2012 20:32:30 +0000 (13:32 -0700)]
cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS

The OMAP driver needs a 'depends on ARCH_OMAP2PLUS' since it only
builds for OMAP2+ platforms.

This 'depends on' was in the original patch from Russell King, but was
erroneously removed by me when making this option user-selectable in
commit b09db45c (cpufreq: OMAP driver depends CPUfreq tables.)  This
patch remedies that.

Apologies to Russell King for breaking his originally working patch.

Also, thanks to Grazvydas Ignotas for reporting the same problem.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Fri, 13 Apr 2012 19:41:21 +0000 (12:41 -0700)]
Merge git://git./linux/kernel/git/davem/sparc

Pull sparc fixes from David Miller.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Eliminate obsolete __handle_softirq() function
  sparc64: Fix bootup crash on sun4v.

12 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Fri, 13 Apr 2012 19:19:41 +0000 (12:19 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon patches from Guenter Roeck:
 "Fix build warnings in four drivers"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (pmbus_core) Fix compiler warning
  hwmon: (smsc47m1) Fix compiler warning
  hwmon: (acpi_power_meter) Fix compiler warning seen in some configurations
  hwmon: (smsc47b397) Fix compiler warning

12 years agoMerge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Fri, 13 Apr 2012 19:18:20 +0000 (12:18 -0700)]
Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull GPIO bug fixes from Grant Likely:
 "Miscellaneous bug fixes to GPIO drivers and for a corner case in the
  gpio device tree parsing code."

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  gpio/exynos: Fix compiler warning in gpio-samsung.c file
  gpio: Fix range check in of_gpio_simple_xlate()
  gpio: Fix uninitialized variable bit in adp5588_irq_handler
  gpio/sodaville: Convert sodaville driver to new irqdomain API

12 years agoMerge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Fri, 13 Apr 2012 19:17:45 +0000 (12:17 -0700)]
Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull SPI bug fixes from Grant Likely:
 "Miscellaneous driver bug fixes.  No major changes in this branch."

* tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  spi/imx: prevent NULL pointer dereference in spi_imx_probe()
  spi/imx: mark base member in spi_imx_data as __iomem
  spi/mpc83xx: fix NULL pdata dereference bug
  spi/davinci: Fix DMA API usage in davinci
  spi/pL022: include types.h to remove compilation warnings

12 years agosparc64: Eliminate obsolete __handle_softirq() function
Paul E. McKenney [Fri, 13 Apr 2012 03:35:13 +0000 (03:35 +0000)]
sparc64: Eliminate obsolete __handle_softirq() function

The invocation of softirq is now handled by irq_exit(), so there is no
need for sparc64 to invoke it on the trap-return path.  In fact, doing so
is a bug because if the trap occurred in the idle loop, this invocation
can result in lockdep-RCU failures.  The problem is that RCU ignores idle
CPUs, and the sparc64 trap-return path to the softirq handlers fails to
tell RCU that the CPU must be considered non-idle while those handlers
are executing.  This means that RCU is ignoring any RCU read-side critical
sections in those handlers, which in turn means that RCU-protected data
can be yanked out from under those read-side critical sections.

The shiny new lockdep-RCU ability to detect RCU read-side critical sections
that RCU is ignoring located this problem.

The fix is straightforward: Make sparc64 stop manually invoking the
softirq handlers.

Reported-by: Meelis Roos <mroos@linux.ee>
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Meelis Roos <mroos@linux.ee>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agosparc64: Fix bootup crash on sun4v.
David S. Miller [Fri, 13 Apr 2012 18:56:22 +0000 (11:56 -0700)]
sparc64: Fix bootup crash on sun4v.

The DS driver registers as a subsys_initcall() but this can be too
early, in particular this risks registering before we've had a chance
to allocate and setup module_kset in kernel/params.c which is
performed also as a subsyts_initcall().

Register DS using device_initcall() insteal.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: stable@vger.kernel.org
12 years agoASoC: convert Tegra20 DAS driver to regmap
Stephen Warren [Fri, 13 Apr 2012 18:14:08 +0000 (12:14 -0600)]
ASoC: convert Tegra20 DAS driver to regmap

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: convert Tegra20 SPDIF driver to regmap
Stephen Warren [Fri, 13 Apr 2012 18:14:07 +0000 (12:14 -0600)]
ASoC: convert Tegra20 SPDIF driver to regmap

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: convert Tegra20 I2S driver to regmap
Stephen Warren [Fri, 13 Apr 2012 18:14:06 +0000 (12:14 -0600)]
ASoC: convert Tegra20 I2S driver to regmap

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: tegra: select REGMAP_MMIO
Stephen Warren [Fri, 13 Apr 2012 17:23:36 +0000 (11:23 -0600)]
ASoC: tegra: select REGMAP_MMIO

All Tegra ASoC drivers will be reworked to use MMIO regmaps. Select
this in Kconfig.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoARM: msm: Fix section mismatches in proc_comm.c
David Brown [Thu, 12 Apr 2012 18:36:50 +0000 (11:36 -0700)]
ARM: msm: Fix section mismatches in proc_comm.c

The change
    commit 4416e9eb0b4859b3d28016c5fd0a609bdcbc8a2a
    Author: Gregory Bean <gbean@codeaurora.org>
    Date:   Wed Jul 28 10:22:12 2010 -0700

        arm: msm: Fix section mismatch in smd.c.

fixes a section mismatch between the board file and the smd driver's
probe function, however, it misses the additional mismatches between
the probe function and some routines it calls.  Fix these up as well.

Signed-off-by: David Brown <davidb@codeaurora.org>
12 years agovideo: msm: Fix section mismatches in mddi.c
David Brown [Thu, 12 Apr 2012 18:36:50 +0000 (11:36 -0700)]
video: msm: Fix section mismatches in mddi.c

The change
    commit 461cbe77d0a4f887c33a3a95ea68a7daf23b4302
    Author: Gregory Bean <gbean@codeaurora.org>
    Date:   Wed Jul 28 10:22:13 2010 -0700

        video: msm: Fix section mismatch in mddi.c.

fixes a section mismatch between the board file and the driver's probe
function, however, it misses the additional mismatches between the
probe function and some routines it calls.  Fix these up as well.

Signed-off-by: David Brown <davidb@codeaurora.org>
12 years agoarm: msm: trout: fix compile failure
Daniel Walker [Thu, 12 Apr 2012 15:45:37 +0000 (08:45 -0700)]
arm: msm: trout: fix compile failure

Fixes the following warnings,

arch/arm/mach-msm/board-trout.c: In function 'trout_init':
arch/arm/mach-msm/board-trout.c:71: error: 'system_rev' undeclared (first use in this function)
arch/arm/mach-msm/board-trout.c:71: error: (Each undeclared identifier is reported only once
arch/arm/mach-msm/board-trout.c:71: error: for each function it appears in.)

and

arch/arm/mach-msm/board-trout-panel.c: In function 'trout_init_panel':
arch/arm/mach-msm/board-trout-panel.c:267: error: 'system_rev' undeclared (first use in this function)
arch/arm/mach-msm/board-trout-panel.c:267: error: (Each undeclared identifier is reported only once
arch/arm/mach-msm/board-trout-panel.c:267: error: for each function it appears in.)

This came in with the following commit 9f97da78bf018206fb623cd351d454af2f105fe0
which removes asm/system.h

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
cc: David Howells <dhowells@redhat.com>
cc: Bryan Huntsman <bryanh@codeaurora.org>
cc: linux-arm-msm@vger.kernel.org
cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: David Brown <davidb@codeaurora.org>
12 years agoarm: msm: halibut: remove unneeded fixup
Daniel Walker [Thu, 12 Apr 2012 04:04:02 +0000 (21:04 -0700)]
arm: msm: halibut: remove unneeded fixup

This old fixup causes a build failure, so I remove it just like in
trout.

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
12 years agoirq_work: fix compile failure on tile from missing include
Chris Metcalf [Wed, 11 Apr 2012 16:21:39 +0000 (12:21 -0400)]
irq_work: fix compile failure on tile from missing include

Building with IRQ_WORK configured results in

kernel/irq_work.c: In function â€˜irq_work_run’:
kernel/irq_work.c:110: error: implicit declaration of function â€˜irqs_disabled’

The appropriate header just needs to be included.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
12 years agoia64: populate the cmpxchg header with appropriate code
Paul Gortmaker [Tue, 3 Apr 2012 17:51:35 +0000 (13:51 -0400)]
ia64: populate the cmpxchg header with appropriate code

commit 93f378883cecb9dcb2cf5b51d9d24175906659da

    "Fix ia64 build errors (fallout from system.h disintegration)"

introduced arch/ia64/include/asm/cmpxchg.h as a temporary
build fix and stated:

    "... leave the migration of xchg() and cmpxchg() to this new
     header file for a future patch."

Migrate the appropriate chunks from asm/intrinsics.h and fix
the whitespace issues in the migrated chunk.

Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
12 years agoalpha: fix build failures from system.h dismemberment
Paul Gortmaker [Mon, 2 Apr 2012 20:04:13 +0000 (16:04 -0400)]
alpha: fix build failures from system.h dismemberment

commit ec2212088c42ff7d1362629ec26dda4f3e8bdad3

    "Disintegrate asm/system.h for Alpha"

combined with commit b4816afa3986704d1404fc48e931da5135820472

    "Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h"

introduced the concept of asm/cmpxchg.h but the alpha arch
never got one.  Fork the cmpxchg content out of the asm/atomic.h
file to create one.

Some minor whitespace fixups were done on the block of code that
created the new file.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
12 years agoARM: 7383/1: nommu: populate vectors page from paging_init
Will Deacon [Thu, 12 Apr 2012 16:16:01 +0000 (17:16 +0100)]
ARM: 7383/1: nommu: populate vectors page from paging_init

Commit 94e5a85b ("ARM: earlier initialization of vectors page") made it
the responsibility of paging_init to initialise the vectors page.

This patch adds a call to early_trap_init for the !CONFIG_MMU case,
placing the vectors at CONFIG_VECTORS_BASE.

Cc: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7381/1: nommu: fix typo in mm/Kconfig
Will Deacon [Thu, 12 Apr 2012 16:12:37 +0000 (17:12 +0100)]
ARM: 7381/1: nommu: fix typo in mm/Kconfig

The description for the CPU_HIGH_VECTOR Kconfig option for nommu builds
doesn't make any sense.

This patch fixes up the trivial grammatical error.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7380/1: DT: do not add a zero-sized memory property
Marc Zyngier [Wed, 11 Apr 2012 13:52:56 +0000 (14:52 +0100)]
ARM: 7380/1: DT: do not add a zero-sized memory property

Some bootloaders are broken enough to expose an ATAG_MEM with
a null size. Converting such tag to a memory node leads to
an unbootable system.

Skip over zero sized ATAG_MEM to avoid this situation.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7379/1: DT: fix atags_to_fdt() second call site
Marc Zyngier [Wed, 11 Apr 2012 13:52:55 +0000 (14:52 +0100)]
ARM: 7379/1: DT: fix atags_to_fdt() second call site

atags_to_fdt() returns 1 when it fails to find a valid FDT signature.
The CONFIG_ARM_ATAG_DTB_COMPAT code is supposed to retry with another
location, but only does so when the initial call doesn't fail.

Fix this by using the correct condition in the assembly code.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7366/3: amba: Remove AMBA level regulator support
Mark Brown [Fri, 13 Apr 2012 12:11:50 +0000 (13:11 +0100)]
ARM: 7366/3: amba: Remove AMBA level regulator support

The AMBA bus regulator support is being used to model on/off switches
for power domains which isn't terribly idiomatic for modern kernels with
the generic power domain code and creates integration problems on platforms
which don't use regulators for their power domains as it's hard to tell
the difference between a regulator that is needed but failed to be provided
and one that isn't supposed to be there (though DT does make that easier).

Platforms that wish to use the regulator API to manage their power domains
can indirect via the power domain interface.

This feature is only used with the vape supply of the db8500 PRCMU
driver which supplies the UARTs and MMC controllers, none of which have
support for managing vcore at runtime in mainline (only pl022 SPI
controller does).  Update that supply to have an always_on constraint
until the power domain support for the system is updated so that it is
enabled for these users, this is likely to have no impact on practical
systems as probably at least one of these devices will be active and
cause AMBA to hold the supply on anyway.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoASoC: sh: fsi: select simple-card on Kconfig
Kuninori Morimoto [Mon, 9 Apr 2012 04:20:08 +0000 (21:20 -0700)]
ASoC: sh: fsi: select simple-card on Kconfig

Current SuperH FSI require simple-card driver as sound card.
This patch select it on Kconfig when FSI was selected.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: sh: fsi: use simple-card instead of fsi-da7210
Kuninori Morimoto [Mon, 9 Apr 2012 04:19:25 +0000 (21:19 -0700)]
ASoC: sh: fsi: use simple-card instead of fsi-da7210

This patch uses simple-card driver instead of fsi-da7210 on each board.
To select DA7210 driver, each boards select it on Kconfig.

This patch removes fsi-da7210 driver which is no longer needed

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: sh: fsi: use simple-card instead of fsi-hdmi
Kuninori Morimoto [Mon, 9 Apr 2012 04:18:58 +0000 (21:18 -0700)]
ASoC: sh: fsi: use simple-card instead of fsi-hdmi

This patch uses simple-card driver instead of fsi-hdmi on each board.
This patch removes fsi-hdmi driver which is no longer needed

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: sh: fsi: use simple-card instead of fsi-ak4642
Kuninori Morimoto [Mon, 9 Apr 2012 04:18:28 +0000 (21:18 -0700)]
ASoC: sh: fsi: use simple-card instead of fsi-ak4642

This patch uses simple-card driver instead of fsi-ak4642 on each board.
To select AK4642 driver, each boards select it on Kconfig.

This patch removes fsi-ak4642 driver which is no longer needed

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: add generic simple-card support
Kuninori Morimoto [Mon, 9 Apr 2012 04:17:50 +0000 (21:17 -0700)]
ASoC: add generic simple-card support

Current ASoC requires card.c file to each platforms in order to
specifies its CPU and Codecs pair.
But the differences between these were only value/strings of setting.
In order to reduce duplicate driver, this patch adds generic/simple-card.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: tegra: add Kconfig and Makefile support for Tegra30
Stephen Warren [Tue, 10 Apr 2012 22:32:01 +0000 (16:32 -0600)]
ASoC: tegra: add Kconfig and Makefile support for Tegra30

This adds Kconfig options for the Tegra30 AHUB and I2S controller, and
updates the Tegra+WM8903 machine driver Kconfig to select those.

Includes a squashed bugfix from Sumit Bhattacharya <sumitb@nvidia.com>

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: tegra: add tegra30-i2s driver
Stephen Warren [Tue, 10 Apr 2012 22:32:00 +0000 (16:32 -0600)]
ASoC: tegra: add tegra30-i2s driver

This provides an ASoC DAI interface for Tegra 30's I2S controller.

Includes a squashed bugfix from Sumit Bhattacharya <sumitb@nvidia.com>

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoASoC: tegra: add tegra30-ahub driver
Stephen Warren [Tue, 10 Apr 2012 22:31:59 +0000 (16:31 -0600)]
ASoC: tegra: add tegra30-ahub driver

The AHUB (Audio Hub) is a mux/crossbar which links all audio-related
devices except the HDA controller on Tegra30. The devices include the
DMA FIFOs, DAM (Digital Audio Mixers), I2S controllers, and SPDIF
controller. Audio data may be routed between these devices in various
combinations as required by board design/application.

Includes a squashed bugfix from Nikesh Oswal <noswal@nvidia.com>
Includes squashed bugfixes from Sumit Bhattacharya <sumitb@nvidia.com>

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: fix compile errors in regmap-irq.c due to stride changes
Stephen Warren [Wed, 11 Apr 2012 05:37:22 +0000 (23:37 -0600)]
regmap: fix compile errors in regmap-irq.c due to stride changes

Commit f01ee60fffa4 ("regmap: implement register striding") caused the
compile errors below. Fix them.

drivers/base/regmap/regmap-irq.c: In function 'regmap_irq_sync_unlock':
drivers/base/regmap/regmap-irq.c:62:12: error: 'map' undeclared (first use in this function)
drivers/base/regmap/regmap-irq.c:62:12: note: each undeclared identifier is reported only once for each function it appears in
drivers/base/regmap/regmap-irq.c: In function 'regmap_irq_enable':
drivers/base/regmap/regmap-irq.c:77:37: error: 'map' undeclared (first use in this function)
drivers/base/regmap/regmap-irq.c: In function 'regmap_irq_disable':
drivers/base/regmap/regmap-irq.c:85:37: error: 'map' undeclared (first use in this function)

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: implement register striding
Stephen Warren [Mon, 9 Apr 2012 19:40:24 +0000 (13:40 -0600)]
regmap: implement register striding

regmap_config.reg_stride is introduced. All extant register addresses
are a multiple of this value. Users of serial-oriented regmap busses will
typically set this to 1. Users of the MMIO regmap bus will typically set
this based on the value size of their registers, in bytes, so 4 for a
32-bit register.

Throughout the regmap code, actual register addresses are used. Wherever
the register address is used to index some array of values, the address
is divided by the stride to determine the index, or vice-versa. Error-
checking is added to all entry-points for register address data to ensure
that register addresses actually satisfy the specified stride. The MMIO
bus ensures that the specified stride is large enough for the register
size.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: fix compilation when !CONFIG_DEBUG_FS
Stephen Warren [Fri, 6 Apr 2012 05:09:20 +0000 (23:09 -0600)]
regmap: fix compilation when !CONFIG_DEBUG_FS

Commit 79c64d5 "regmap: allow regmap instances to be named" changed the
prototype of regmap_debugfs_init, but didn't update the dummy inline used
when !CONFIG_DEBUGFS. Fix this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: allow regmap instances to be named
Stephen Warren [Wed, 4 Apr 2012 21:48:29 +0000 (15:48 -0600)]
regmap: allow regmap instances to be named

Some devices have multiple separate register regions. Logically, one
regmap would be created per region. One issue that prevents this is that
each instance will attempt to create the same debugfs files. Avoid this
by allowing regmaps to be named, and use the name to construct the
debugfs directory name.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: validate regmap_raw_read/write val_len
Stephen Warren [Fri, 6 Apr 2012 21:16:03 +0000 (15:16 -0600)]
regmap: validate regmap_raw_read/write val_len

val_len should be a multiple of val_bytes. If it's not, error out early.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: mmio: remove some error checks now in the core
Stephen Warren [Fri, 6 Apr 2012 21:17:33 +0000 (15:17 -0600)]
regmap: mmio: remove some error checks now in the core

These error checks are implemented in regmap core. Remove the duplicate
code from regmap-mmio.c

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: mmio: convert some error returns to BUG()
Stephen Warren [Fri, 6 Apr 2012 21:17:32 +0000 (15:17 -0600)]
regmap: mmio: convert some error returns to BUG()

Some of the error conditions detected by regmap_mmio_*() are pure internal
errors, rather than user-/client-triggerable conditions. Convert these to
BUG().

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: add MMIO bus support
Stephen Warren [Wed, 4 Apr 2012 21:48:31 +0000 (15:48 -0600)]
regmap: add MMIO bus support

This is a basic memory-mapped-IO bus for regmap. It has the following
features and limitations:

* Registers themselves may be 8, 16, 32, or 64-bit. 64-bit is only
  supported on 64-bit platforms.
* Register offsets are limited to precisely 32-bit.
* IO is performed using readl/writel, with no provision for using the
  __raw_readl or readl_relaxed variants.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: introduce fast_io busses, and use a spinlock for them
Stephen Warren [Wed, 4 Apr 2012 21:48:28 +0000 (15:48 -0600)]
regmap: introduce fast_io busses, and use a spinlock for them

Some bus types have very fast IO. For these, acquiring a mutex for every
IO operation is a significant overhead. Allow busses to indicate their IO
is fast, and enhance regmap to use a spinlock for those busses.

[Currently limited to native endian registers -- broonie]

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: introduce explicit bus_context for bus callbacks
Stephen Warren [Wed, 4 Apr 2012 21:48:30 +0000 (15:48 -0600)]
regmap: introduce explicit bus_context for bus callbacks

The only context needed by I2C and SPI bus definitions is the device
itself; this can be converted to an i2c_client or spi_device in order
to perform IO on the device. However, other bus types may need more
context in order to perform IO. Enable this by having regmap_init accept
a bus_context parameter, and pass this to all bus callbacks. The
existing callbacks simply pass the struct device here. Future bus types
may pass something else.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: Use pad_bits and reg_bits when determining register format.
Marc Reilly [Fri, 16 Mar 2012 01:11:43 +0000 (12:11 +1100)]
regmap: Use pad_bits and reg_bits when determining register format.

This change combines any padding bits into the register address bits when
determining register format handlers to use the next byte-divisible
register size.
A reg_shift member is introduced to the regmap struct to enable fixup
of the reg format.
Format handlers now take an extra parameter specifying the number of
bits to shift the value by.

Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoregmap: Add support for device with 24 data bits.
Marc Reilly [Fri, 16 Mar 2012 01:11:42 +0000 (12:11 +1100)]
regmap: Add support for device with 24 data bits.

Add support for devices with 24 data bits.

Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
12 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Fri, 13 Apr 2012 07:47:04 +0000 (09:47 +0200)]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Pull various perf tooling fixes from Arnaldo Carvalho de Melo.

12 years agoALSA: hda/realtek - Fix mem leak (and rid us of trailing whitespace).
Jesper Juhl [Thu, 12 Apr 2012 20:11:25 +0000 (22:11 +0200)]
ALSA: hda/realtek - Fix mem leak (and rid us of trailing whitespace).

In sound/pci/hda/patch_realtek.c::alc_auto_fill_dac_nids(), in the
'for (;;)' loop, if the 'badness' value returned from
fill_and_eval_dacs() is negative, then we'll return from the function
without freeing the memory we allocated for 'best_cfg', thus leaking.
Fix the leak by kfree()'ing the memory when badness is negative.

While I was there I also noticed some trailing whitespace in the
function that I removed (along with all other trailing whitespace in
the file) - it didn't seem worth-while to do that as two patches, so I
hope it's OK that I just did it all as one patch.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoMerge tag 'srpt-srq-type' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Fri, 13 Apr 2012 01:51:32 +0000 (18:51 -0700)]
Merge tag 'srpt-srq-type' of git://git./linux/kernel/git/roland/infiniband

Pull infiniband fix from Roland Dreier:
 "Add a fix for a bug hit by Alexey Shvetsov in ib_srtp that hits on
  non-mlx4 hardware."

* tag 'srpt-srq-type' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/srpt: Set srq_type to IB_SRQT_BASIC

12 years agokconfig: delete last traces of __enabled_ from autoconf.h
Paul Gortmaker [Thu, 12 Apr 2012 23:46:34 +0000 (19:46 -0400)]
kconfig: delete last traces of __enabled_ from autoconf.h

We've now fixed IS_ENABLED() and friends to not require any special
"__enabled_" prefixed versions of the normal Kconfig options, so delete
the last traces of them being generated.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoRevert "kconfig: fix __enabled_ macros definition for invisible and un-selected symbols"
Paul Gortmaker [Thu, 12 Apr 2012 23:46:33 +0000 (19:46 -0400)]
Revert "kconfig: fix __enabled_ macros definition for invisible and un-selected symbols"

This reverts commit 953742c8fe8ac45be453fee959d7be40cd89f920.

Dumping two lines into autoconf.h for all existing Kconfig options
results in a giant file (~16k lines) we have to process each time we
compile something.  We've weaned IS_ENABLED() and similar off of
requiring the __enabled_ definitions so now we can revert the change
which caused all the extra lines.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agokconfig: fix IS_ENABLED to not require all options to be defined
Paul Gortmaker [Thu, 12 Apr 2012 23:46:32 +0000 (19:46 -0400)]
kconfig: fix IS_ENABLED to not require all options to be defined

Using IS_ENABLED() within C (vs.  within CPP #if statements) in its
current form requires us to actually define every possible bool/tristate
Kconfig option twice (__enabled_* and __enabled_*_MODULE variants).

This results in a huge autoconf.h file, on the order of 16k lines for a
x86_64 defconfig.

Fixing IS_ENABLED to be able to work on the smaller subset of just
things that we really have defined is step one to fixing this.  Which
means it has to not choke when fed non-enabled options, such as:

  include/linux/netdevice.h:964:1: warning: "__enabled_CONFIG_FCOE_MODULE" is not defined [-Wundef]

The original prototype of how to implement a C and preprocessor
compatible way of doing this came from the Google+ user "comex ." in
response to Linus' crowdsourcing challenge for a possible improvement on
his earlier C specific solution:

#define config_enabled(x)       (__stringify(x)[0] == '1')

In this implementation, I've chosen variable names that hopefully make
how it works more understandable.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoBtrfs: use commit root when loading free space cache
Josef Bacik [Thu, 12 Apr 2012 20:03:57 +0000 (16:03 -0400)]
Btrfs: use commit root when loading free space cache

A user reported that booting his box up with btrfs root on 3.4 was way
slower than on 3.3 because I removed the ideal caching code.  It turns out
that we don't load the free space cache if we're in a commit for deadlock
reasons, but since we're reading the cache and it hasn't changed yet we are
safe reading the inode and free space item from the commit root, so do that
and remove all of the deadlock checks so we don't unnecessarily skip loading
the free space cache.  The user reported this fixed the slowness.  Thanks,

Tested-by: Calvin Walton <calvin.walton@kepstin.ca>
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>