GitHub/exynos8895/android_kernel_samsung_universal8895.git
15 years agoMerge branch 'defconfig-s3c2410' of git://aeryn.fluff.org.uk/bjdooks/linux
Russell King [Fri, 17 Apr 2009 20:35:56 +0000 (21:35 +0100)]
Merge branch 'defconfig-s3c2410' of git://aeryn.fluff.org.uk/bjdooks/linux

15 years agoMerge branch 'v2630-rc2-fixes' of git://aeryn.fluff.org.uk/bjdooks/linux
Russell King [Fri, 17 Apr 2009 20:35:44 +0000 (21:35 +0100)]
Merge branch 'v2630-rc2-fixes' of git://aeryn.fluff.org.uk/bjdooks/linux

15 years ago[ARM] S3C24XX: ADC: Check pending queue before freeing adc client
Ramax Lo [Tue, 14 Apr 2009 15:56:18 +0000 (23:56 +0800)]
[ARM] S3C24XX: ADC: Check pending queue before freeing adc client

Check pending queue and remove the adc client being released.

Signed-off-by: Ramax Lo <ramaxlo@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] S3C: Fix ADC driver sparse warning
Ben Dooks [Fri, 17 Apr 2009 11:36:49 +0000 (12:36 +0100)]
[ARM] S3C: Fix ADC driver sparse warning

The symbol 's3c_adc_try' in arch/arm/plat-s3c24xx/adc.c
does not need to be exported and thus should be static.

This fixes the following sparse warning:

adc.c:103:6: warning: symbol 's3c_adc_try' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] Osiris: Fix double initialisation in machine block
Ben Dooks [Fri, 17 Apr 2009 11:36:47 +0000 (12:36 +0100)]
[ARM] Osiris: Fix double initialisation in machine block

The .init_machine entry in mach-osiris.c had the same entry
twice, so remove one definition to fix the following warning
from sparse:

mach-osiris.c:416:3: warning: Initializer entry defined twice
mach-osiris.c:418:3:   also defined here

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] Anubis: Fix sparse warnings for items that should be static
Ben Dooks [Fri, 17 Apr 2009 11:36:46 +0000 (12:36 +0100)]
[ARM] Anubis: Fix sparse warnings for items that should be static

Make 'anubis_ide_platdata' statis as it is not used outside
the file it is in, fixing the following sparse warning:

mach-anubis.c:246:27: warning: symbol 'anubis_ide_platdata' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] JIVE: Fix sparse warnings about items which should be static
Ben Dooks [Fri, 17 Apr 2009 11:36:45 +0000 (12:36 +0100)]
[ARM] JIVE: Fix sparse warnings about items which should be static

Make 'jive_vgg2432a4_display' and 'jive_lcd_config' static as
they are not exported, and are generating the following sparse
warnings:

mach-jive.c:280:26: warning: symbol 'jive_vgg2432a4_display' was not declared. Should it be static?
mach-jive.c:313:28: warning: symbol 'jive_lcd_config' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] S3C: Fix sparse warning from missing 's3c_device_hwmon'
Ben Dooks [Fri, 17 Apr 2009 11:36:44 +0000 (12:36 +0100)]
[ARM] S3C: Fix sparse warning from missing 's3c_device_hwmon'

Fix the following sparse warning due to s3c_device_hwmon being
missing from <plat/devs.h>

devs.c:380:24: warning: symbol 's3c_device_hwmon' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] S3C24XX: Fix sparse error in gpiolib.c
Ben Dooks [Fri, 17 Apr 2009 11:36:43 +0000 (12:36 +0100)]
[ARM] S3C24XX: Fix sparse error in gpiolib.c

Fix the following sparse error generated by including
<plat/gpio-core.h> instead of <mach/gpio-core.h>

gpiolib.c:78:22: warning: symbol 's3c24xx_gpios' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] 5455/1: Fix IRQ noise from VIC code
Linus Walleij [Thu, 16 Apr 2009 20:17:56 +0000 (21:17 +0100)]
[ARM] 5455/1: Fix IRQ noise from VIC code

The VIC code will attempt to perform som
default set_irq_chip() and set_irq_chip_data()
on all IRQs supported by the VIC, while the new
IRQ handling code strictly checks for the global
NR_IRQS to be respected also for these IRQs.

This patch will respect the interrupt mask passed
to the VIC driver and will prevent it from
attempting to call these functions on any unused
interrupts.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years ago[ARM] 5454/1: ep93xx_eth: fix sparse warnings
Hartley Sweeten [Thu, 16 Apr 2009 16:56:10 +0000 (17:56 +0100)]
[ARM] 5454/1: ep93xx_eth: fix sparse warnings

Fix 50+ sparse warnings in the ep93xx ethernet driver.

  warning: incorrect type in argument 1 (different address spaces)

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoMerge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6
Russell King [Thu, 16 Apr 2009 15:16:34 +0000 (16:16 +0100)]
Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6

15 years ago[ARM] remove .gitignore from include/asm-arm
Russell King [Thu, 16 Apr 2009 15:09:08 +0000 (16:09 +0100)]
[ARM] remove .gitignore from include/asm-arm

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoUpdate MAINTAINERS
Russell King [Thu, 16 Apr 2009 13:05:27 +0000 (14:05 +0100)]
Update MAINTAINERS

Update rmk's email address, and expand on what he's responsible for.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agomxc defconfig updates
Sascha Hauer [Wed, 8 Apr 2009 09:39:34 +0000 (11:39 +0200)]
mxc defconfig updates

This patch removes several i.MX board specific defconfig files in favour
for a mx1_defconfig, mx27_defconfig and mx3_defconfig. All config files
have all currently available boards, i.MX specific drivers and the network
device drivers for the boards enabled.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
15 years agomx31ads: Mark as having full regulatoion constraints with 1133-EV1 board
Mark Brown [Mon, 13 Apr 2009 12:05:28 +0000 (13:05 +0100)]
mx31ads: Mark as having full regulatoion constraints with 1133-EV1 board

This allows the regulator API to power off unused regulators at the end
of init.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
15 years agomx31ads: Depend on all the WM8350 core dependencies for WM1133-EV1 board
Mark Brown [Tue, 14 Apr 2009 10:25:18 +0000 (11:25 +0100)]
mx31ads: Depend on all the WM8350 core dependencies for WM1133-EV1 board

Otherwise we'd need massive ifdefs in the code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
15 years agoFix ifdef in plat-mxc/irc.c
Darius Augulis [Wed, 8 Apr 2009 13:17:50 +0000 (16:17 +0300)]
Fix ifdef in plat-mxc/irc.c

Move ifdef under function brackets. This fixes compile crach when IRQ priorities
are disabled.

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
15 years agoMX1ADS: remove I2C ifdefs
Darius Augulis [Wed, 8 Apr 2009 08:15:00 +0000 (11:15 +0300)]
MX1ADS: remove I2C ifdefs

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
15 years agoqong: remove AIPS[12] mappings from machine-specific iotable
Ilya Yanok [Sat, 14 Mar 2009 18:51:59 +0000 (21:51 +0300)]
qong: remove AIPS[12] mappings from machine-specific iotable

AIPS[12] are no mapped from generic MX3 code so we don't need to
map them from machine-specific map_io function anymore.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
15 years agomx31ads: imoux pins should be passed in as unsigned int
Mark Brown [Mon, 13 Apr 2009 12:02:36 +0000 (13:02 +0100)]
mx31ads: imoux pins should be passed in as unsigned int

To match the mxc_iomux_setup_multiple_pins() prototype.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
15 years agoMXC: remove orphan imx_init_uart() definition
Paulius Zaleckas [Mon, 6 Apr 2009 13:40:52 +0000 (16:40 +0300)]
MXC: remove orphan imx_init_uart() definition

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
15 years agomx31: pin definition for csi
Valentin Longchamp [Wed, 1 Apr 2009 14:32:41 +0000 (16:32 +0200)]
mx31: pin definition for csi

Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
15 years agoMX31: pin definition for sdhc2
Valentin Longchamp [Wed, 1 Apr 2009 14:18:25 +0000 (16:18 +0200)]
MX31: pin definition for sdhc2

This also adds the pins used on mx31moboard for WP and CD

Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
15 years agoMX31: Add I2C pin definitions
Vladimir Barinov [Wed, 1 Apr 2009 12:07:14 +0000 (16:07 +0400)]
MX31: Add I2C pin definitions

Add I2C pin definitions for MX31 SoC

Signed-off-by: Vladimir Barinov <vbarinov@embeddedalley.com>
15 years agoMX31: Add more alternate pin definitions
Sascha Hauer [Fri, 19 Dec 2008 13:31:54 +0000 (14:31 +0100)]
MX31: Add more alternate pin definitions

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
15 years agopcm037 board support: Fix eth interrupt gpio setting
Sascha Hauer [Sat, 4 Apr 2009 11:40:39 +0000 (13:40 +0200)]
pcm037 board support: Fix eth interrupt gpio setting

gpio_direction_input needs the gpio number, not the pin description.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
15 years agoimx21: activate i2c
Holger Schurig [Wed, 1 Apr 2009 11:58:21 +0000 (13:58 +0200)]
imx21: activate i2c

Set the correct clkdev-name for the i2c clock.

It also get's rid of the ARCH_NR_GPIOS define on the rationale
that isn't an ARCH-wide setting anyway. If a device has two
pca953x devices, the reserved number will be wrong.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
15 years agoimx21: fixes some clocknames
Holger Schurig [Tue, 31 Mar 2009 10:16:59 +0000 (12:16 +0200)]
imx21: fixes some clocknames

Signed-off-by: <hs4233@mail.mn-solutions.de>
15 years ago[ARM] S3C: Export s3c_gpio_cfgpin and s3c_gpio_setpull for modules
Ben Dooks [Tue, 10 Mar 2009 23:21:48 +0000 (23:21 +0000)]
[ARM] S3C: Export s3c_gpio_cfgpin and s3c_gpio_setpull for modules

Add an export of the two GPIO configuration calls
s3c_gpio_cfgpin and s3c_gpio_setpull to allow modules
to use them (such as ASoC drivers)

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Update miscellaneous drivers
Ben Dooks [Thu, 16 Apr 2009 09:20:47 +0000 (10:20 +0100)]
[ARM] s3c2410_defconfig: Update miscellaneous drivers

Update the driver build in the s3c2410_defconfig for the
LED, IDE, Input and EEPROM options

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Update USB device drivers
Ben Dooks [Wed, 15 Apr 2009 16:25:39 +0000 (17:25 +0100)]
[ARM] s3c2410_defconfig: Update USB device drivers

Add more USB device driver options to the s3c2410_defconfig,
mostly as modules.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Update filesystem options
Ben Dooks [Wed, 15 Apr 2009 16:21:36 +0000 (17:21 +0100)]
[ARM] s3c2410_defconfig: Update filesystem options

Update the filesystem options in the s3c2410_defconfig,
such as building ext4, enable the automounter as modules
and update the network filesysyem choices.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Add video/radio drivers
Ben Dooks [Wed, 15 Apr 2009 16:15:05 +0000 (17:15 +0100)]
[ARM] s3c2410_defconfig: Add video/radio drivers

Add a set of various video and radio drivers to the
s3c2410_defconfig as modules.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Add sound drivers
Ben Dooks [Wed, 15 Apr 2009 16:07:24 +0000 (17:07 +0100)]
[ARM] s3c2410_defconfig: Add sound drivers

Add sound drivers to the s3c2410_defconfig.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] 5453/1: fix building breakage of sys_oabi-compat.c due to missing kmalloc/kfree
eric miao [Thu, 16 Apr 2009 08:55:23 +0000 (09:55 +0100)]
[ARM] 5453/1: fix building breakage of sys_oabi-compat.c due to missing kmalloc/kfree

It seems that declarations of kmalloc/kfree are missed, explicitly
include it.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 15 Apr 2009 16:11:11 +0000 (09:11 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Fix the cmd cache keys for amp verbs
  ALSA: add missing definitions(letters) to HD-Audio.txt
  ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
  [ALSA] intel8x0: add one retry to the ac97_clock measurement routine
  [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine
  ALSA: hda - Avoid call of snd_jack_report at release
  ALSA: add private_data to struct snd_jack
  ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes
  ALSA: snd-usb-caiaq: clean up header includes
  ALSA: sound/pci: use memdup_user()
  ALSA: sound/usb: use memdup_user()
  ALSA: sound/isa: use memdup_user()
  ALSA: sound/core: use memdup_user()
  [ALSA] intel8x0: do not use zero value from PICB register
  [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable
  [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies
  [ALSA] hda_intel: fix unexpected ring buffer positions
  ASoC: Disable S3C64xx support in Kconfig
  ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Wed, 15 Apr 2009 16:04:12 +0000 (09:04 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Use DEFINE_SPINLOCK
  GFS2: cleanup file_operations mess
  GFS2: Move umount flush rwsem
  GFS2: Fix symlink creation race
  GFS2: Make quotad's waiting interruptible

15 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 15 Apr 2009 16:03:47 +0000 (09:03 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (28 commits)
  cfq-iosched: add close cooperator code
  cfq-iosched: log responsible 'cfqq' in idle timer arm
  cfq-iosched: tweak kick logic a bit more
  cfq-iosched: no need to save interrupts in cfq_kick_queue()
  brd: fix cacheflushing
  brd: support barriers
  swap: Remove code handling bio_alloc failure with __GFP_WAIT
  gfs2: Remove code handling bio_alloc failure with __GFP_WAIT
  ext4: Remove code handling bio_alloc failure with __GFP_WAIT
  dio: Remove code handling bio_alloc failure with __GFP_WAIT
  block: Remove code handling bio_alloc failure with __GFP_WAIT
  bio: add documentation to bio_alloc()
  splice: add helpers for locking pipe inode
  splice: remove generic_file_splice_write_nolock()
  ocfs2: fix i_mutex locking in ocfs2_splice_to_file()
  splice: fix i_mutex locking in generic_splice_write()
  splice: remove i_mutex locking in splice_from_pipe()
  splice: split up __splice_from_pipe()
  block: fix SG_IO to return a proper error value
  cfq-iosched: don't delay queue kick for a merged request
  ...

15 years agoMerge branch 'topic/hda' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 15:52:32 +0000 (17:52 +0200)]
Merge branch 'topic/hda' into for-linus

* topic/hda:
  ALSA: hda - Fix the cmd cache keys for amp verbs
  ALSA: add missing definitions(letters) to HD-Audio.txt

15 years agoALSA: hda - Fix the cmd cache keys for amp verbs
Takashi Iwai [Wed, 15 Apr 2009 15:48:35 +0000 (17:48 +0200)]
ALSA: hda - Fix the cmd cache keys for amp verbs

Fix the key value generation for get/set amp verbs.  The upper bits of
the parameter have to be combined with the verb value to be unique for
each direction/index of amp access.

This fixes the resume problem on some hardwares like Macbook after
the channel mode is changed.

Tested-by: Johannes Berg <johannes@sipsolutions.net>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
Linus Torvalds [Wed, 15 Apr 2009 15:42:40 +0000 (08:42 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: pseries/dtl.c should include asm/firmware.h
  powerpc: Fix data-corrupting bug in __futex_atomic_op
  powerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()
  powerpc: Allow 256kB pages with SHMEM
  powerpc: Document new FSL I2C bindings and cleanup
  powerpc/mm: Fix compile warning
  powerpc/85xx: TQM8548: update defconfig
  powerpc/85xx: TQM8548: use proper phy-handles for enet2 and enet3
  powerpc/85xx: TQM85xx: correct address of LM75 I2C device nodes
  powerpc: Add support for early tlbilx opcode
  powerpc: Fix tlbilx opcode

15 years agoacpi-cpufreq: fix 'smp_call_function_many()' confusion
Linus Torvalds [Wed, 15 Apr 2009 15:05:13 +0000 (08:05 -0700)]
acpi-cpufreq: fix 'smp_call_function_many()' confusion

It turns out that 'smp_call_function_many()' doesn't work at all like
'smp_call_function_single()', and my change to Andrew's patch to use it
rather than a loop over all CPU's acpi-cpufreq doesn't work.

My bad.

'smp_call_function_many()' has two "features" (aka "documented bugs"):

 (a) it needs to be called with preemption disabled, because it uses
     smp_processor_id() without guarding the CPU lookup with 'get_cpu()'
     and 'put_cpu()' like the 'single' variant does.

 (b) even if the current CPU is part of the CPU mask, it won't do the
     call on that CPU.

Still, we're better off trying to use 'smp_call_function_many()' than
looping over CPU's, since it at least in theory allows us to use a
broadcast IPI and do it all in parallel.  So let's just work around the
silly semantic bugs in that function.

Reported-and-tested-by: Ali Gholami Rudi <ali@rudi.ir>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago[ARM] s3c2410_defconfig: Add MMC/SD core and drivers
Ben Dooks [Wed, 15 Apr 2009 14:12:11 +0000 (15:12 +0100)]
[ARM] s3c2410_defconfig: Add MMC/SD core and drivers

Add SD/MMC to the s3c2410_defconfig, building in the core
and adding the rest of the drivers as modules.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Update machine configuration
Ben Dooks [Wed, 15 Apr 2009 14:02:47 +0000 (15:02 +0100)]
[ARM] s3c2410_defconfig: Update machine configuration

Update the machine configuration of s3c2410_defconfig to
add support for newer machines, and update the s3c24xx
specific options.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: Update network options
Ben Dooks [Wed, 15 Apr 2009 14:00:18 +0000 (15:00 +0100)]
[ARM] s3c2410_defconfig: Update network options

Update the list of modules being built for the network
core of the s3c2410_defconfig. This update adds such
items as TCP congestion, netfilter for IPv4 and IPv6.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] s3c2410_defconfig: update to 2.6.30-rc2
Ben Dooks [Wed, 15 Apr 2009 13:56:33 +0000 (14:56 +0100)]
[ARM] s3c2410_defconfig: update to 2.6.30-rc2

Update arch/arm/configs/s3c2410_defconfig to the
latest kernel release (2.6.30-rc2).

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] SMDK6410: Request GPIOs for LCD power control
Mark Brown [Wed, 8 Apr 2009 15:12:35 +0000 (16:12 +0100)]
[ARM] SMDK6410: Request GPIOs for LCD power control

Going forward gpio_request() will be a requirement for GPIO API users so
call it for the LCD power GPIOs. With present code the kernel functions
but generaets loud WARN_ON()s when using the unrequested GPIOs.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years ago[ARM] S3C: remove duplicated #include
Huang Weiyi [Tue, 7 Apr 2009 23:11:04 +0000 (07:11 +0800)]
[ARM] S3C: remove duplicated #include

Remove duplicated #include in arch/arm/mach-s3c2412/mach-jive.c.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
15 years agocfq-iosched: add close cooperator code
Jens Axboe [Wed, 15 Apr 2009 10:15:11 +0000 (12:15 +0200)]
cfq-iosched: add close cooperator code

If we have processes that are working in close proximity to each
other on disk, we don't want to idle wait. Instead allow the close
process to issue a request, getting better aggregate bandwidth.
The anticipatory scheduler has similar checks, noop and deadline do
not need it since they don't care about process <-> io mappings.

The code for CFQ is a little more involved though, since we split
request queues into per-process contexts.

This fixes a performance problem with eg dump(8), since it uses
several processes in some silly attempt to speed IO up. Even if
dump(8) isn't really a valid case (it should be fixed by using
CLONE_IO), there are other cases where we see close processes
and where idling ends up hurting performance.

Credit goes to Jeff Moyer <jmoyer@redhat.com> for writing the
initial implementation.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: log responsible 'cfqq' in idle timer arm
Jens Axboe [Wed, 15 Apr 2009 10:14:13 +0000 (12:14 +0200)]
cfq-iosched: log responsible 'cfqq' in idle timer arm

Makes it easier to read the traces.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: tweak kick logic a bit more
Jens Axboe [Wed, 15 Apr 2009 10:12:46 +0000 (12:12 +0200)]
cfq-iosched: tweak kick logic a bit more

We only kick the dispatch for an idling queue, if we think it's a
(somewhat) fully merged request. Also allow a kick if we have other
busy queues in the system, since we don't want to risk waiting for
a potential merge in that case. It's better to get some work done and
proceed.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: no need to save interrupts in cfq_kick_queue()
Jens Axboe [Wed, 15 Apr 2009 10:11:10 +0000 (12:11 +0200)]
cfq-iosched: no need to save interrupts in cfq_kick_queue()

It's called from the workqueue handlers from process context, so
we always have irqs enabled when entered.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobrd: fix cacheflushing
Nick Piggin [Wed, 15 Apr 2009 08:32:07 +0000 (10:32 +0200)]
brd: fix cacheflushing

brd is missing a flush_dcache_page. On 2nd thoughts, perhaps it is the
pagecache's responsibility to flush user virtual aliases (the driver of
course should flush kernel virtual mappings)... but anyway, there
already exists cache flushing for one direction of transfer, so we
should add the other.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobrd: support barriers
Nick Piggin [Wed, 15 Apr 2009 08:27:07 +0000 (10:27 +0200)]
brd: support barriers

brd is always ordered (not that it matters, as it is defined not to
survive when the system goes down). So tell the block layer it is
ordered, which might be of help with testing filesystems.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoswap: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:07:04 +0000 (10:37 +0530)]
swap: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agogfs2: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:06:35 +0000 (10:36 +0530)]
gfs2: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_NOFS implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoext4: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:06:16 +0000 (10:36 +0530)]
ext4: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_NOIO implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agodio: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:05:52 +0000 (10:35 +0530)]
dio: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_KERNEL implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:05:31 +0000 (10:35 +0530)]
block: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_KERNEL implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobio: add documentation to bio_alloc()
Jens Axboe [Wed, 15 Apr 2009 07:00:07 +0000 (09:00 +0200)]
bio: add documentation to bio_alloc()

Explain that with __GFP_WAIT set it will not fail, and that the caller
must never allocate more than 1 bio at the time.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: add helpers for locking pipe inode
Miklos Szeredi [Tue, 14 Apr 2009 17:48:41 +0000 (19:48 +0200)]
splice: add helpers for locking pipe inode

There are lots of sequences like this, especially in splice code:

if (pipe->inode)
mutex_lock(&pipe->inode->i_mutex);
/* do something */
if (pipe->inode)
mutex_unlock(&pipe->inode->i_mutex);

so introduce helpers which do the conditional locking and unlocking.
Also replace the inode_double_lock() call with a pipe_double_lock()
helper to avoid spreading the use of this functionality beyond the
pipe code.

This patch is just a cleanup, and should cause no behavioral changes.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: remove generic_file_splice_write_nolock()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:40 +0000 (19:48 +0200)]
splice: remove generic_file_splice_write_nolock()

Remove the now unused generic_file_splice_write_nolock() function.
It's conceptually broken anyway, because splice may need to wait for
pipe events so holding locks across the whole operation is wrong.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoocfs2: fix i_mutex locking in ocfs2_splice_to_file()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:39 +0000 (19:48 +0200)]
ocfs2: fix i_mutex locking in ocfs2_splice_to_file()

Rearrange locking of i_mutex on destination and call to
ocfs2_rw_lock() so locks are only held while buffers are copied with
the pipe_to_file() actor, and not while waiting for more data on the
pipe.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: fix i_mutex locking in generic_splice_write()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:38 +0000 (19:48 +0200)]
splice: fix i_mutex locking in generic_splice_write()

Rearrange locking of i_mutex on destination so it's only held while
buffers are copied with the pipe_to_file() actor, and not while
waiting for more data on the pipe.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: remove i_mutex locking in splice_from_pipe()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:37 +0000 (19:48 +0200)]
splice: remove i_mutex locking in splice_from_pipe()

splice_from_pipe() is only called from two places:

  - generic_splice_sendpage()
  - splice_write_null()

Neither of these require i_mutex to be taken on the destination inode.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: split up __splice_from_pipe()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:36 +0000 (19:48 +0200)]
splice: split up __splice_from_pipe()

Split up __splice_from_pipe() into four helper functions:

  splice_from_pipe_begin()
  splice_from_pipe_next()
  splice_from_pipe_feed()
  splice_from_pipe_end()

splice_from_pipe_next() will wait (if necessary) for more buffers to
be added to the pipe.  splice_from_pipe_feed() will feed the buffers
to the supplied actor and return when there's no more data available
(or if all of the requested data has been copied).

This is necessary so that implementations can do locking around the
non-waiting splice_from_pipe_feed().

This patch should not cause any change in behavior.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: fix SG_IO to return a proper error value
FUJITA Tomonori [Mon, 13 Apr 2009 18:03:10 +0000 (20:03 +0200)]
block: fix SG_IO to return a proper error value

blk_rq_unmap_user() returns -EFAULT if a program passes an invalid
address to kernel. SG_IO path needs to pass the returned value to user
space instead of ignoring it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoALSA: add missing definitions(letters) to HD-Audio.txt
Justin Mattock [Tue, 14 Apr 2009 21:31:21 +0000 (14:31 -0700)]
ALSA: add missing definitions(letters) to HD-Audio.txt

impact: Add missing definitions(letters).

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'topic/memdup_user' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:27 +0000 (11:24 +0200)]
Merge branch 'topic/memdup_user' into for-linus

* topic/memdup_user:
  ALSA: sound/pci: use memdup_user()
  ALSA: sound/usb: use memdup_user()
  ALSA: sound/isa: use memdup_user()
  ALSA: sound/core: use memdup_user()

15 years agoMerge branch 'topic/usb-caiaq' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:22 +0000 (11:24 +0200)]
Merge branch 'topic/usb-caiaq' into for-linus

* topic/usb-caiaq:
  ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes
  ALSA: snd-usb-caiaq: clean up header includes

15 years agoMerge branch 'topic/asoc' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:14 +0000 (11:24 +0200)]
Merge branch 'topic/asoc' into for-linus

* topic/asoc:
  ASoC: Disable S3C64xx support in Kconfig
  ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h

15 years agoMerge branch 'topic/hda' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:09 +0000 (11:24 +0200)]
Merge branch 'topic/hda' into for-linus

* topic/hda:
  ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
  ALSA: hda - Avoid call of snd_jack_report at release
  ALSA: add private_data to struct snd_jack

15 years agoMerge branch 'topic/jack-free-fix' into topic/hda
Takashi Iwai [Wed, 15 Apr 2009 09:23:44 +0000 (11:23 +0200)]
Merge branch 'topic/jack-free-fix' into topic/hda

* topic/jack-free-fix:
  ALSA: hda - Avoid call of snd_jack_report at release
  ALSA: add private_data to struct snd_jack

15 years agoMerge branch 'master' of git://git.alsa-project.org/alsa-kernel into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:21:13 +0000 (11:21 +0200)]
Merge branch 'master' of git://git.alsa-project.org/alsa-kernel into for-linus

* 'master' of git://git.alsa-project.org/alsa-kernel:
  [ALSA] intel8x0: add one retry to the ac97_clock measurement routine
  [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine
  [ALSA] intel8x0: do not use zero value from PICB register
  [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable
  [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies
  [ALSA] hda_intel: fix unexpected ring buffer positions

15 years agoGFS2: Use DEFINE_SPINLOCK
Xu Gang [Tue, 14 Apr 2009 06:54:14 +0000 (14:54 +0800)]
GFS2: Use DEFINE_SPINLOCK

SPIN_LOCK_UNLOCKED is deprecated, use DEFINE_SPINLOCK instead.
(as suggested in Documentation/spinlocks.txt)

Signed-off-by: Xu Gang <xug@cn.fujitsu.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: cleanup file_operations mess
Christoph Hellwig [Tue, 7 Apr 2009 17:42:17 +0000 (19:42 +0200)]
GFS2: cleanup file_operations mess

Remove the weird pointer to file_operations mess and replace it with
straight-forward defining of the lockinginstance names to the _nolock
variants.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move umount flush rwsem
Steven Whitehouse [Tue, 7 Apr 2009 13:01:34 +0000 (14:01 +0100)]
GFS2: Move umount flush rwsem

The rwsem, used only on umount, is in the wrong place in glock.c.
This patch moves it up a bit so that it does not get called under
a spinlock.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix symlink creation race
Steven Whitehouse [Tue, 31 Mar 2009 15:06:27 +0000 (16:06 +0100)]
GFS2: Fix symlink creation race

In certain cases symlinks can appear to have zero size if a lookup
on the inode occurs within a certain (very short) time after the
symlink has been created. The symlink is correctly created on disk
but appears to have zero size when stat()ed. This patch closes the
race and prevents incorrect sizes appearing.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Make quotad's waiting interruptible
Steven Whitehouse [Tue, 31 Mar 2009 14:49:08 +0000 (15:49 +0100)]
GFS2: Make quotad's waiting interruptible

So we don't count its D state in the loadavg.

Reported-by: Nathan Straz <nstraz@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
Takashi Iwai [Tue, 14 Apr 2009 12:51:04 +0000 (14:51 +0200)]
ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883

Added the models for quirk bitmask 1734:110x and 1734:113x of
Fujitsu laptops.

This will fix the model detection for Amilo Xa3540.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years ago[ARM] 5451/1: ep93xx:core.c: build warning fix
Hartley Sweeten [Tue, 14 Apr 2009 20:38:07 +0000 (21:38 +0100)]
[ARM] 5451/1: ep93xx:core.c: build warning fix

Fix trivial build warning due to incompatible pointer type.

ep93xx_timer_interrupt() has the wrong return type causing a
warning during the build.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years ago[ARM] 5450/1: Flush only the needed range when unmapping a VMA
Aaro Koskinen [Tue, 14 Apr 2009 12:07:35 +0000 (13:07 +0100)]
[ARM] 5450/1: Flush only the needed range when unmapping a VMA

When unmapping N pages (e.g. shared memory) the amount of TLB flushes
done can be (N*PAGE_SIZE/ZAP_BLOCK_SIZE)*N although it should be N at
maximum. With PREEMPT kernel ZAP_BLOCK_SIZE is 8 pages, so there is a
noticeable performance penalty when unmapping a large VMA and the system
is spending its time in flush_tlb_range().

The problem is that tlb_end_vma() is always flushing the full VMA
range. The subrange that needs to be flushed can be calculated by
tlb_remove_tlb_entry(). This approach was suggested by Hugh Dickins,
and is also used by other arches.

The speed increase is roughly 3x for 8M mappings and for larger mappings
even more.

Signed-off-by: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years ago[ARM] 5449/1: S3C: Use disable_irq_nosync() to fix boot lockups
Mark Brown [Tue, 14 Apr 2009 10:06:49 +0000 (11:06 +0100)]
[ARM] 5449/1: S3C: Use disable_irq_nosync() to fix boot lockups

With 2.6.30-rc1 on SMDK6410 I experience a soft lockup on bootup when
the Samsung serial driver attempts to disable the transmit interrupt
from within the transmit interrupt handler: it calls disable_irq()
which locks up due to attempting to synchronise with the running handler.
Fix this by using disable_irq_nosync().

Also make the same change in the recieve path.

Backtrace:

[<c002a914>] (__irq_svc+0x34/0x80) from [<c00696c0>] (synchr)
[<c00696c0>] (synchronize_irq+0xc/0xcc) from [<c018d434>] (s)
[<c018d434>] (s3c24xx_serial_stop_tx+0x1c/0x3c) from [<c018d)
[<c018d54c>] (s3c24xx_serial_tx_chars+0xf8/0x104) from [<c00)
[<c0068bcc>] (handle_IRQ_event+0x74/0x118) from [<c006ab04>])
[<c006ab04>] (handle_level_irq+0x100/0x118) from [<c00349c4>)
[<c00349c4>] (s3c_irq_demux_uart+0x94/0xc4) from [<c002a050>)
[<c002a050>] (_text+0x50/0x6c) from [<c002a914>] (__irq_svc+)

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
15 years agoMerge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Russell King [Wed, 15 Apr 2009 08:58:21 +0000 (09:58 +0100)]
Merge branch 'fix' of git://git./linux/kernel/git/ycmiao/pxa-linux-2.6

15 years ago[ALSA] intel8x0: add one retry to the ac97_clock measurement routine
Jaroslav Kysela [Wed, 15 Apr 2009 08:16:24 +0000 (10:16 +0200)]
[ALSA] intel8x0: add one retry to the ac97_clock measurement routine

It seems that on some hardware platforms, the first measurement is wrong.
This patch adds second measurement to this case.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
15 years agocfq-iosched: don't delay queue kick for a merged request
Jens Axboe [Tue, 14 Apr 2009 12:18:16 +0000 (14:18 +0200)]
cfq-iosched: don't delay queue kick for a merged request

"Zhang, Yanmin" <yanmin_zhang@linux.intel.com> reports that commit
b029195dda0129b427c6e579a3bb3ae752da3a93 introduced a regression
of about 50% with sequential threaded read workloads. The test
case is:

tiotest -k0 -k1 -k3 -f 80 -t 32

which starts 32 threads each reading a 80MB file. Twiddle the kick
queue logic so that we do start IO immediately, if it appears to be
a fully merged request. We can't really detect that, so just check
if the request is bigger than a page or not. The assumption is that
since single bio issues will first queue a single request with just
one page attached and then later do merges on that, if we already
have more than a page worth of data in the request, then the request
is most likely good to go.

Verified that this doesn't cause a regression with the test case that
commit b029195dda0129b427c6e579a3bb3ae752da3a93 was fixing. It does not,
we still see maximum sized requests for the queue-then-merge cases.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobuffer: switch do_emergency_thaw() away from pdflush_operation()
Jens Axboe [Wed, 8 Apr 2009 11:44:08 +0000 (13:44 +0200)]
buffer: switch do_emergency_thaw() away from pdflush_operation()

This is (again) a preparatory patch similar to commit
a2a9537ac0b37a5da6fbe7e1e9cb06c524d2a9c4. It open codes a simple
async way of executing do_thaw_all() out of context, so we can get
rid of pdflush.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: update biodoc.txt on plugging
Jens Axboe [Wed, 8 Apr 2009 09:38:50 +0000 (11:38 +0200)]
block: update biodoc.txt on plugging

We do per-device plugging, get rid of any references to tq_disk as that
has been dead since 2.6.5 or so.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoas-iosched: get rid of private REQ_SYNC/REQ_ASYNC defines
Jens Axboe [Wed, 8 Apr 2009 09:02:08 +0000 (11:02 +0200)]
as-iosched: get rid of private REQ_SYNC/REQ_ASYNC defines

We can just use the block layer BLK_RW_SYNC/ASYNC defines now.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: get rid of private SYNC/ASYNC defines
Jens Axboe [Wed, 8 Apr 2009 08:58:57 +0000 (10:58 +0200)]
cfq-iosched: get rid of private SYNC/ASYNC defines

We can just use the block layer BLK_RW_SYNC/ASYNC defines now.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: use rw_is_sync() to see if rw flags are sync or not
Jens Axboe [Wed, 8 Apr 2009 08:56:08 +0000 (10:56 +0200)]
cfq-iosched: use rw_is_sync() to see if rw flags are sync or not

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoDocument and move the various READ/WRITE types
Jens Axboe [Tue, 14 Apr 2009 06:19:27 +0000 (08:19 +0200)]
Document and move the various READ/WRITE types

It's a somewhat twisty maze of hints and behavioural modifiers, try
and clear it up a bit with some documentation.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: fix bad spelling of quiesce
Jens Axboe [Wed, 8 Apr 2009 12:22:01 +0000 (14:22 +0200)]
block: fix bad spelling of quiesce

Credit goes to Andrew Morton for spotting this one.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: move bio list helpers into bio.h
Christoph Hellwig [Tue, 7 Apr 2009 17:55:13 +0000 (19:55 +0200)]
block: move bio list helpers into bio.h

It's used by DM and MD and generally useful, so move the bio list
helpers into bio.h.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agopowerpc: pseries/dtl.c should include asm/firmware.h
Sachin Sant [Tue, 14 Apr 2009 14:35:55 +0000 (14:35 +0000)]
powerpc: pseries/dtl.c should include asm/firmware.h

A randconfig build on powerpc failed with:

dtl.c: In function 'dtl_init':
dtl.c:238: error: implicit declaration of function 'firmware_has_feature'
dtl.c:238: error: 'FW_FEATURE_SPLPAR' undeclared (first use in this function)

- We need firmware.h for these definitions.

Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc: Fix data-corrupting bug in __futex_atomic_op
Paul Mackerras [Mon, 13 Apr 2009 14:09:09 +0000 (14:09 +0000)]
powerpc: Fix data-corrupting bug in __futex_atomic_op

Richard Henderson pointed out that the powerpc __futex_atomic_op has a
bug: it will write the wrong value if the stwcx. fails and it has to
retry the lwarx/stwcx. loop, since 'oparg' will have been overwritten
by the result from the first time around the loop.  This happens
because it uses the same register for 'oparg' (an input) as it uses
for the result.

This fixes it by using separate registers for 'oparg' and 'ret'.

Cc: stable@kernel.org
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()
Mike Mason [Fri, 10 Apr 2009 08:57:03 +0000 (08:57 +0000)]
powerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()

While adding native EEH support to Emulex and Qlogic drivers, it was
discovered that dev->error_state was set to pci_io_channel_normal too
late in the recovery process. These drivers rely on error_state to
determine if they can access the device in their slot_reset callback,
thus error_state needs to be set to pci_io_channel_normal in
eeh_report_reset(). Below is a detailed explanation (courtesy of Richard
Lary) as to why this is necessary.

Background:
PCI MMIO or DMA accesses to a frozen slot generate additional EEH
errors. If the number of additional EEH errors exceeds EEH_MAX_FAILS the
adapter will be shutdown. To avoid triggering excessive EEH errors and
an undesirable adapter shutdown, some drivers use the
pci_channel_offline(dev) wrapper function to return a Boolean value
based on the value of pci_dev->error_state to determine if PCI MMIO or
DMA accesses are safe. If the wrapper returns TRUE, drivers must not
make PCI MMIO or DMA access to their hardware.

The pci_dev structure member error_state reflects one of three values,
1) pci_channel_io_normal, 2) pci_channel_io_frozen, 3)
pci_channel_io_perm_failure.  Function pci_channel_offline(dev) returns
TRUE if error_state is pci_channel_io_frozen or pci_channel_io_perm_failure.

The EEH driver sets pci_dev->error_state to pci_channel_io_frozen at the
point where the PCI slot is frozen. Currently, the EEH driver restores
dev->error_state to pci_channel_io_normal in eeh_report_resume() before
calling the driver's resume callback. However, when the EEH driver calls
the driver's slot_reset callback() from eeh_report_reset(), it
incorrectly indicates the error state is still pci_channel_io_frozen.

Waiting until eeh_report_resume() to restore dev->error_state to
pci_channel_io_normal is too late for Emulex and QLogic FC drivers and
any other drivers which are designed to use common code paths in these
two cases: i) those called after the driver's slot_reset callback() and
ii) those called after the PCI slot is frozen but before the driver's
slot_reset callback is called. Case i) all driver paths executed to
reinitialize the hardware after a reset and case ii) all code paths
executed by driver kernel threads that run asynchronous to the main
driver thread, such as interrupt handlers and worker threads to process
driver work queues.

Emulex and QLogic FC drivers are designed with common code paths which
require that pci_channel_offline(dev) reflect the true state of the
hardware. The state transitions that the hardware takes from Normal
Operations to Slot Frozen to Reset to Normal Operations are documented
in the Power Architectureâ„¢ Platform Requirements+ (PAPR+) in Table 75.
PE State Control.

PAPR defines the following 3 states:

0 -- Not reset, Not EEH stopped, MMIO load/store allowed, DMA allowed
     (Normal Operations)
1 -- Reset, Not EEH stopped, MMIO load/store disabled, DMA disabled
2 -- Not reset, EEH stopped, MMIO load/store disabled, DMA disabled
     (Slot Frozen)

An EEH error places the slot in state 2 (Frozen) and the adapter driver
is notified that an EEH error was detected. If the adapter driver
returns PCI_ERS_RESULT_NEED_RESET, the EEH driver calls
eeh_reset_device() to place the slot into state 1 (Reset) and
eeh_reset_device completes by placing the slot into State 0 (Normal
Operations). Upon return from eeh_reset_device(), the EEH driver calls
eeh_report_reset, which then calls the adapter's slot_reset callback. At
the time the adapter's slot_reset callback is called, the true state of
the hardware is Normal Operations and should be accurately reflected by
setting dev->error_state to pci_channel_io_normal.

The current implementation of EEH driver does not do so and requires
this change to correct this deficiency.

Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Acked-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc: Allow 256kB pages with SHMEM
Hugh Dickins [Mon, 6 Apr 2009 11:01:15 +0000 (11:01 +0000)]
powerpc: Allow 256kB pages with SHMEM

Now that shmem's divisions by zero and SHMEM_MAX_BYTES are fixed,
let powerpc 256kB pages coexist with CONFIG_SHMEM again.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agoLinux 2.6.30-rc2
Linus Torvalds [Tue, 14 Apr 2009 20:51:48 +0000 (13:51 -0700)]
Linux 2.6.30-rc2