Commit graph

11128 commits

Author SHA1 Message Date
Linus Torvalds
a66d2c8f7e Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull the big VFS changes from Al Viro:
 "This one is *big* and changes quite a few things around VFS.  What's in there:

   - the first of two really major architecture changes - death to open
     intents.

     The former is finally there; it was very long in making, but with
     Miklos getting through really hard and messy final push in
     fs/namei.c, we finally have it.  Unlike his variant, this one
     doesn't introduce struct opendata; what we have instead is
     ->atomic_open() taking preallocated struct file * and passing
     everything via its fields.

     Instead of returning struct file *, it returns -E...  on error, 0
     on success and 1 in "deal with it yourself" case (e.g.  symlink
     found on server, etc.).

     See comments before fs/namei.c:atomic_open().  That made a lot of
     goodies finally possible and quite a few are in that pile:
     ->lookup(), ->d_revalidate() and ->create() do not get struct
     nameidata * anymore; ->lookup() and ->d_revalidate() get lookup
     flags instead, ->create() gets "do we want it exclusive" flag.

     With the introduction of new helper (kern_path_locked()) we are rid
     of all struct nameidata instances outside of fs/namei.c; it's still
     visible in namei.h, but not for long.  Come the next cycle,
     declaration will move either to fs/internal.h or to fs/namei.c
     itself.  [me, miklos, hch]

   - The second major change: behaviour of final fput().  Now we have
     __fput() done without any locks held by caller *and* not from deep
     in call stack.

     That obviously lifts a lot of constraints on the locking in there.
     Moreover, it's legal now to call fput() from atomic contexts (which
     has immediately simplified life for aio.c).  We also don't need
     anti-recursion logics in __scm_destroy() anymore.

     There is a price, though - the damn thing has become partially
     asynchronous.  For fput() from normal process we are guaranteed
     that pending __fput() will be done before the caller returns to
     userland, exits or gets stopped for ptrace.

     For kernel threads and atomic contexts it's done via
     schedule_work(), so theoretically we might need a way to make sure
     it's finished; so far only one such place had been found, but there
     might be more.

     There's flush_delayed_fput() (do all pending __fput()) and there's
     __fput_sync() (fput() analog doing __fput() immediately).  I hope
     we won't need them often; see warnings in fs/file_table.c for
     details.  [me, based on task_work series from Oleg merged last
     cycle]

   - sync series from Jan

   - large part of "death to sync_supers()" work from Artem; the only
     bits missing here are exofs and ext4 ones.  As far as I understand,
     those are going via the exofs and ext4 trees resp.; once they are
     in, we can put ->write_super() to the rest, along with the thread
     calling it.

   - preparatory bits from unionmount series (from dhowells).

   - assorted cleanups and fixes all over the place, as usual.

  This is not the last pile for this cycle; there's at least jlayton's
  ESTALE work and fsfreeze series (the latter - in dire need of fixes,
  so I'm not sure it'll make the cut this cycle).  I'll probably throw
  symlink/hardlink restrictions stuff from Kees into the next pile, too.
  Plus there's a lot of misc patches I hadn't thrown into that one -
  it's large enough as it is..."

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (127 commits)
  ext4: switch EXT4_IOC_RESIZE_FS to mnt_want_write_file()
  btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()
  switch dentry_open() to struct path, make it grab references itself
  spufs: shift dget/mntget towards dentry_open()
  zoran: don't bother with struct file * in zoran_map
  ecryptfs: don't reinvent the wheels, please - use struct completion
  don't expose I_NEW inodes via dentry->d_inode
  tidy up namei.c a bit
  unobfuscate follow_up() a bit
  ext3: pass custom EOF to generic_file_llseek_size()
  ext4: use core vfs llseek code for dir seeks
  vfs: allow custom EOF in generic_file_llseek code
  vfs: Avoid unnecessary WB_SYNC_NONE writeback during sys_sync and reorder sync passes
  vfs: Remove unnecessary flushing of block devices
  vfs: Make sys_sync writeout also block device inodes
  vfs: Create function for iterating over block devices
  vfs: Reorder operations during sys_sync
  quota: Move quota syncing to ->sync_fs method
  quota: Split dquot_quota_sync() to writeback and cache flushing part
  vfs: Move noop_backing_dev_info check from sync into writeback
  ...
2012-07-23 12:27:27 -07:00
Linus Torvalds
a6be1fcbc5 MMC highlights for 3.6:
Core:
  - Rename cd-gpio to slot-gpio and extend it to support more
    slot GPIO functions, such as write-protect.
  - Add a function to get regulators (Vdd and Vccq) for a host.
 
 Drivers:
  - sdhci-pxav2, sdhci-pxav3: Add device tree support.
  - sdhi: Add device tree support.
  - sh_mmcif: Add support for regulators, device tree, slot-gpio.
  - tmio: Add regulator support, use slot-gpio.
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Merge tag 'mmc-merge-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "MMC highlights for 3.6:

  Core:
   - Rename cd-gpio to slot-gpio and extend it to support more slot GPIO
     functions, such as write-protect.
   - Add a function to get regulators (Vdd and Vccq) for a host.

  Drivers:
   - sdhci-pxav2, sdhci-pxav3: Add device tree support.
   - sdhi: Add device tree support.
   - sh_mmcif: Add support for regulators, device tree, slot-gpio.
   - tmio: Add regulator support, use slot-gpio."

* tag 'mmc-merge-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (62 commits)
  mmc: sdhci-dove: Prepare for common clock framework
  mmc: sdhci-dove: Add SDHCI_QUIRK_NO_HISPD_BIT
  mmc: omap_hsmmc: ensure probe returns error upon resource failure
  mmc: mxs-mmc: Add wp-inverted property
  mmc: esdhc: Fix DMA_MASK to not break mx25 DMA access
  mmc: core: reset signal voltage on power up
  mmc: sd: Fix sd current limit setting
  mmc: omap_hsmmc: add clk_prepare and clk_unprepare
  mmc: sdhci: When a UHS switch fails, cycle power if regulator is used
  mmc: atmel-mci: modify CLKDIV displaying in debugfs
  mmc: atmel-mci: fix incorrect setting of host->data to NULL
  mmc: sdhci: poll for card even when card is logically unremovable
  mmc: sdhci: Introduce new flag SDHCI_USING_RETUNING_TIMER
  mmc: sdio: Change pr_warning to pr_warn_ratelimited
  mmc: core: Simplify and fix for SD switch processing
  mmc: sdhci: restore host settings when card is removed
  mmc: sdhci: fix incorrect command used in tuning
  mmc: sdhci-pci: CaFe has broken card detection
  mmc: sdhci: Report failure reasons for all cases in sdhci_add_host()
  mmc: s3cmci: Convert s3cmci driver to gpiolib API
  ...
2012-07-22 16:36:08 -07:00
Linus Torvalds
7100e505b7 Power management updates for 3.6
* ACPI conversion to PM handling based on struct dev_pm_ops.
 * Conversion of a number of platform drivers to PM handling based on struct
   dev_pm_ops and removal of empty legacy PM callbacks from a couple of PCI
   drivers.
 * Suspend-to-both for in-kernel hibernation from Bojan Smojver.
 * cpuidle fixes and cleanups from ShuoX Liu, Daniel Lezcano and Preeti U Murthy.
 * cpufreq bug fixes from Jonghwa Lee and Stephen Boyd.
 * Suspend and hibernate fixes from Srivatsa S. Bhat and Colin Cross.
 * Generic PM domains framework updates.
 * RTC CMOS wakeup signaling update from Paul Fox.
 * sparse warnings fixes from Sachin Kamat.
 * Build warnings fixes for the generic PM domains framework and PM sysfs code.
 * sysfs switch for printing device suspend times from Sameer Nanda.
 * Documentation fix from Oskar Schirmer.
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Merge tag 'pm-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:

 - ACPI conversion to PM handling based on struct dev_pm_ops.
 - Conversion of a number of platform drivers to PM handling based on
   struct dev_pm_ops and removal of empty legacy PM callbacks from a
   couple of PCI drivers.
 - Suspend-to-both for in-kernel hibernation from Bojan Smojver.
 - cpuidle fixes and cleanups from ShuoX Liu, Daniel Lezcano and Preeti
   Murthy.
 - cpufreq bug fixes from Jonghwa Lee and Stephen Boyd.
 - Suspend and hibernate fixes from Srivatsa Bhat and Colin Cross.
 - Generic PM domains framework updates.
 - RTC CMOS wakeup signaling update from Paul Fox.
 - sparse warnings fixes from Sachin Kamat.
 - Build warnings fixes for the generic PM domains framework and PM
   sysfs code.
 - sysfs switch for printing device suspend times from Sameer Nanda.
 - Documentation fix from Oskar Schirmer.

* tag 'pm-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (70 commits)
  cpufreq: Fix sysfs deadlock with concurrent hotplug/frequency switch
  EXYNOS: bugfix on retrieving old_index from freqs.old
  PM / Sleep: call early resume handlers when suspend_noirq fails
  PM / QoS: Use NULL pointer instead of plain integer in qos.c
  PM / QoS: Use NULL pointer instead of plain integer in pm_qos.h
  PM / Sleep: Require CAP_BLOCK_SUSPEND to use wake_lock/wake_unlock
  PM / Sleep: Add missing static storage class specifiers in main.c
  cpuilde / ACPI: remove time from acpi_processor_cx structure
  cpuidle / ACPI: remove usage from acpi_processor_cx structure
  cpuidle / ACPI : remove latency_ticks from acpi_processor_cx structure
  rtc-cmos: report wakeups from interrupt handler
  PM / Sleep: Fix build warning in sysfs.c for CONFIG_PM_SLEEP unset
  PM / Domains: Fix build warning for CONFIG_PM_RUNTIME unset
  olpc-xo15-sci: Use struct dev_pm_ops for power management
  PM / Domains: Replace plain integer with NULL pointer in domain.c file
  PM / Domains: Add missing static storage class specifier in domain.c file
  PM / crypto / ux500: Use struct dev_pm_ops for power management
  PM / IPMI: Remove empty legacy PCI PM callbacks
  tpm_nsc: Use struct dev_pm_ops for power management
  tpm_tis: Use struct dev_pm_ops for power management
  ...
2012-07-22 13:36:52 -07:00
Linus Torvalds
4d460fd3ab regulator: Updates for 3.6
Lots and lots of fixes from Axel and some others here, plus some framework
 enhancements which continue the theme of factoring code out of the drivers
 and into the core.
 
 - Initial framework support for GPIO controlled enable signals, saving a
   bunch of code in drivers.
 - Move fixed regulator enable time and voltage mapping table
   specifications to data.
 - Used some of the recent framework enhancements to make voltage change
   notifications more useful, passing the voltage in as an argument to the
   notification.
 - Fixed the pattern used for finding individual regulators on a device
   to not rely on the node name, supporting the use of multiple PMICs of
   the same type in the system.
 - New drivers for Maxim MAX77686, TI LP872x and LP8788, Samsung S2MPS11,
   and Wolfson Arizona microphone supplies and LDOs.
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Merge tag 'regulator-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "Lots and lots of fixes from Axel and some others here, plus some
  framework enhancements which continue the theme of factoring code out
  of the drivers and into the core.

   - Initial framework support for GPIO controlled enable signals,
     saving a bunch of code in drivers.
   - Move fixed regulator enable time and voltage mapping table
     specifications to data.
   - Used some of the recent framework enhancements to make voltage
     change notifications more useful, passing the voltage in as an
     argument to the notification.
   - Fixed the pattern used for finding individual regulators on a
     device to not rely on the node name, supporting the use of multiple
     PMICs of the same type in the system.
   - New drivers for Maxim MAX77686, TI LP872x and LP8788, Samsung
     S2MPS11, and Wolfson Arizona microphone supplies and LDOs."

* tag 'regulator-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (176 commits)
  regulator: add new lp8788 regulator driver
  regulator: mc13xxx: Remove extern function declaration for mc13xxx_sw_regulator
  regulator: tps65910: set input_supply on desc unconditionally
  regulator: palmas: Fix calcuating selector in palmas_map_voltage_smps
  regulator: lp872x: Simplify implementation of lp872x_find_regulator_init_data()
  regulator: twl: Fix list_voltate for twl6030ldo_ops
  regulator: twl: Convert twl6030ldo_ops to [get|set]_voltage_sel
  regulator: twl: Fix the formula to calculate vsel and voltage for twl6030ldo
  regulator: s5m8767: Properly handle gpio_request failure
  regulator: max8997: Properly handle gpio_request failure
  regulator: tps62360: use devm_* for gpio request
  regulator: tps6586x: add support for input supply
  regulator: tps65217: Add device tree support
  regulator: aat2870: Remove unused min_uV and max_uV from struct aat2870_regulator
  regulator: aat2870: Convert to regulator_list_voltage_table
  regulator: da9052: initialize of_node param for regulator register
  regulator: Add REGULATOR_STATUS_UNDEFINED.
  regulator: Fix a typo in regulator_mode_to_status() core function.
  regulator: s2mps11: Use sec_reg_write rather than sec_reg_update when mask is 0xff
  regulator: s2mps11: Fix wrong setting for config.dev
  ...
2012-07-22 13:05:23 -07:00
Linus Torvalds
16d286e656 Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molnar:
 "Quoting from Paul, the major features of this series are:

  1. Preventing latency spikes of more than 200 microseconds for
     kernels built with NR_CPUS=4096, which is reportedly becoming the
     default for some distros.  This is a first step, as it does not
     help with systems that actually -have- 4096 CPUs (work on this case
     is in progress, but is not yet ready for mainline).

     This category also includes improving concurrency of rcu_barrier(),
     placed here due to conflicts.  Posted to LKML at:

      https://lkml.org/lkml/2012/6/22/381

     Note that patches 18-22 of that series have been defered to 3.7, as
     they have not yet proven themselves to be mainline-ready (and yes,
     these are the ones intended to get rid of RCU's latency spikes for
     systems that actually have 4096 CPUs).

  2. Updates to documentation and rcutorture fixes, the latter category
     including improvements to rcu_barrier() testing.  Posted to LKML at

      http://lkml.indiana.edu/hypermail/linux/kernel/1206.1/04094.html.

  3. Miscellaneous fixes posted to LKML at:

      https://lkml.org/lkml/2012/6/22/500

     with the exception of the last commit, which was posted here:

      http://www.gossamer-threads.com/lists/linux/kernel/1561830

  4. RCU_FAST_NO_HZ fixes and improvements.  Posted to LKML at:

      http://lkml.indiana.edu/hypermail/linux/kernel/1206.1/00006.html
      http://www.gossamer-threads.com/lists/linux/kernel/1561833

     The first four patches of the first series went into 3.5 to fix a
     regression.

  5. Code-style fixes.  These were posted to LKML at

      http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/01180.html
      http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/01181.html"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits)
  rcu: Fix broken strings in RCU's source code.
  rcu: Fix code-style issues involving "else"
  rcu: Introduce check for callback list/count mismatch
  rcu: Make RCU_FAST_NO_HZ respect nohz= boot parameter
  rcu: Fix qlen_lazy breakage
  rcu: Round FAST_NO_HZ lazy timeout to nearest second
  rcu: The rcu_needs_cpu() function is not a quiescent state
  rcu: Dump only the current CPU's buffers for idle-entry/exit warnings
  rcu: Add check for CPUs going offline with callbacks queued
  rcu: Disable preemption in rcu_blocking_is_gp()
  rcu: Prevent uninitialized string in RCU CPU stall info
  rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU
  rcu: Split RCU core processing out of __call_rcu()
  rcu: Prevent __call_rcu() from invoking RCU core on offline CPUs
  rcu: Make __call_rcu() handle invocation from idle
  rcu: Remove function versions of __kfree_rcu and __is_kfree_rcu_offset
  rcu: Consolidate tree/tiny __rcu_read_{,un}lock() implementations
  rcu: Remove return value from rcu_assign_pointer()
  key: Remove extraneous parentheses from rcu_assign_keypointer()
  rcu: Remove return value from RCU_INIT_POINTER()
  ...
2012-07-22 10:45:05 -07:00
Chris Ball
b650352dd3 mmc: sdhci-pxa: Add device tree support
Tested on an OLPC XO-1.75.  (MMP2, sdhci-pxav3, CONFIG_MACH_MMP2_DT=y)

Signed-off-by: Chris Ball <cjb@laptop.org>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-07-21 00:01:47 -04:00
Olaf Hering
b1bdd2eb31 kexec: update URL of kexec homepage
The referenced html file does not exist anymore. Replace the URL with
the current project homepage.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-18 18:35:57 -07:00
Rafael J. Wysocki
b4269e2799 Merge branch 'pm-doc'
* pm-doc:
  PM / Documentation: fix typos in power management description
2012-07-19 00:03:46 +02:00
Rafael J. Wysocki
823d936409 Merge branch 'fixes' into pm-sleep
The 'fixes' branch contains material the next commit depends on.
2012-07-18 23:58:24 +02:00
Laxman Dewangan
d2cfdb055d regulator: tps65910: set input_supply on desc unconditionally
Set the supply_name in the regulator descriptor unconditionally
and make this parameter as required parameter in the device
node for successfully registration of the regulator.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-17 11:08:46 +01:00
Linus Torvalds
1694a0a08e late pinctrl fixes for v3.5
- Two fixes to the i.MX driver
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Merge tag 'fixes-for-v3.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull late pinctrl fixes from Linus Walleij:
- Two fixes to the i.MX driver

* tag 'fixes-for-v3.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: pinctrl-imx6q: add missed mux function for USBOTG_ID
  pinctrl: pinctrl-imx: only print debug message when DEBUG is defined
2012-07-16 08:32:06 -07:00
Mark Brown
d5b2e30bdc Linux 3.5-rc7
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Merge tag 'v3.5-rc7' into regulator-drivers

Linux 3.5-rc7
2012-07-15 21:49:21 +01:00
Dong Aisheng
4a5f7eff8b pinctrl: pinctrl-imx6q: add missed mux function for USBOTG_ID
The original pin registers table is derived from u-boot mainline,
but somehow it was found missing some mux functions for USBOTG_ID.
We added it at the bottom by following the exist pin function ids,
then it will not break the exist using of pin function id in dts file.

Reported-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
2012-07-14 22:32:10 +02:00
Al Viro
ebfc3b49a7 don't pass nameidata to ->create()
boolean "does it have to be exclusive?" flag is passed instead;
Local filesystem should just ignore it - the object is guaranteed
not to be there yet.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:34:47 +04:00
Al Viro
00cd8dd3bf stop passing nameidata to ->lookup()
Just the flags; only NFS cares even about that, but there are
legitimate uses for such argument.  And getting rid of that
completely would require splitting ->lookup() into a couple
of methods (at least), so let's leave that alone for now...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:34:32 +04:00
Al Viro
0b728e1911 stop passing nameidata * to ->d_revalidate()
Just the lookup flags.  Die, bastard, die...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:34:14 +04:00
Al Viro
30d9049474 kill struct opendata
Just pass struct file *.  Methods are happier that way...
There's no need to return struct file * from finish_open() now,
so let it return int.  Next: saner prototypes for parts in
namei.c

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:33:39 +04:00
Al Viro
d95852777b make ->atomic_open() return int
Change of calling conventions:
old		new
NULL		1
file		0
ERR_PTR(-ve)	-ve

Caller *knows* that struct file *; no need to return it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:33:35 +04:00
Al Viro
47237687d7 ->atomic_open() prototype change - pass int * instead of bool *
... and let finish_open() report having opened the file via that sucker.
Next step: don't modify od->filp at all.

[AV: FILE_CREATE was already used by cifs; Miklos' fix folded]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:33:31 +04:00
Miklos Szeredi
d18e9008c3 vfs: add i_op->atomic_open()
Add a new inode operation which is called on the last component of an open.
Using this the filesystem can look up, possibly create and open the file in one
atomic operation.  If it cannot perform this (e.g. the file type turned out to
be wrong) it may signal this by returning NULL instead of an open struct file
pointer.

i_op->atomic_open() is only called if the last component is negative or needs
lookup.  Handling cached positive dentries here doesn't add much value: these
can be opened using f_op->open().  If the cached file turns out to be invalid,
the open can be retried, this time using ->atomic_open() with a fresh dentry.

For now leave the old way of using open intents in lookup and revalidate in
place.  This will be removed once all the users are converted.

David Howells noticed that if ->atomic_open() opens the file but does not create
it, handle_truncate() will be called on it even if it is not a regular file.
Fix this by checking the file type in this case too.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:33:04 +04:00
Al Viro
049b3c10ee vfs: update documentation on ->i_dentry handling
we used to need to clean it in RCU callback freeing an inode;
in 3.2 that requirement went away.  Unfortunately, it hadn't
been reflected in Documentation/filesystems/porting.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:32:51 +04:00
Linus Torvalds
8488e4088f Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
 - Some regression fixes at the audio part for devices with
   cx23885/cx25840
 - A DMA corruption fix at cx231xx
 - two fixes at the winbond IR driver
 - Several fixes for the EXYNOS media driver (s5p)
 - two fixes at the OMAP3 preview driver
 - one fix at the dvb core failure path
 - an include missing (slab.h) at smiapp-core causing compilation
   breakage
 - em28xx was not loading the IR driver driver anymore.

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (31 commits)
  [media] Revert "[media] V4L: JPEG class documentation corrections"
  [media] s5p-fimc: Add missing FIMC-LITE file operations locking
  [media] omap3isp: preview: Fix contrast and brightness handling
  [media] omap3isp: preview: Fix output size computation depending on input format
  [media] winbond-cir: Initialise timeout, driver_type and allowed_protos
  [media] winbond-cir: Fix txandrx module info
  [media] cx23885: Silence unknown command warnings
  [media] cx23885: add support for HVR-1255 analog (cx23888 variant)
  [media] cx23885: make analog support work for HVR_1250 (cx23885 variant)
  [media] cx25840: fix vsrc/hsrc usage on cx23888 designs
  [media] cx25840: fix regression in HVR-1800 analog audio
  [media] cx25840: fix regression in analog support hue/saturation controls
  [media] cx25840: fix regression in HVR-1800 analog support
  [media] s5p-mfc: Fixed setup of custom controls in decoder and encoder
  [media] cx231xx: don't DMA to random addresses
  [media] em28xx: fix em28xx-rc load
  [media] dvb-core: Release semaphore on error path dvb_register_device()
  [media] s5p-fimc: Stop media entity pipeline if fimc_pipeline_validate fails
  [media] s5p-fimc: Fix compiler warning in fimc-lite.c
  [media] s5p-fimc: media_entity_pipeline_start() may fail
  ...
2012-07-13 10:29:41 -07:00
Linus Torvalds
36ec9fbfe7 Late MTD fixes for 3.5:
- fix 'sparse warning fix' regression which totally breaks MXC NAND
  - fix GPMI NAND regression when used with UBI
  - update/correct sysfs documentation for new 'bitflip_threshold' field
  - fix nandsim build failure
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Merge tag 'for-linus-20120712' of git://git.infradead.org/linux-mtd

Pull late MTD fixes from David Woodhouse:
 - fix 'sparse warning fix' regression which totally breaks MXC NAND
 - fix GPMI NAND regression when used with UBI
 - update/correct sysfs documentation for new 'bitflip_threshold' field
 - fix nandsim build failure

* tag 'for-linus-20120712' of git://git.infradead.org/linux-mtd:
  mtd: nandsim: don't open code a do_div helper
  mtd: ABI documentation: clarification of bitflip_threshold
  mtd: gpmi-nand: fix read page when reading to vmalloced area
  mtd: mxc_nand: use 32bit copy functions
2012-07-13 09:56:26 -07:00
Laxman Dewangan
7c7fac3058 regulator: tps6586x: add support for input supply
There is multiple voltage input pins on device which
takes the voltage input for different voltage regulator.
Support to configure the voltage input supplied by
different regulator for each regulators.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-13 15:21:18 +01:00
AnilKumar Ch
a7f1b63eb8 regulator: tps65217: Add device tree support
This commit adds device tree support for tps65217 pmic. And usage
details are added to device tree documentation. Driver is tested
by using kernel module with regulator set and get APIs.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-12 18:27:36 +01:00
Chris Ball
ed3efc1ccc mmc: dt: Add reg/interrupts to mmc.txt for clarity.
Even though these aren't parsed by the MMC driver, make clear that
they're required by the OF core.  (Also, a few typo fixes.)

Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:07 -04:00
Chris Ball
4efafee02f mmc: dt: Deduplicate binding docs by referencing mmc.txt
Now that we have common bindings for MMC, rewrite the individual
bindings to inherit from mmc.txt and describe their differences.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:06 -04:00
Andy Lutomirski
c540521bba security: Minor improvements to no_new_privs documentation
The documentation didn't actually mention how to enable no_new_privs.
This also adds a note about possible interactions between
no_new_privs and LSMs (i.e. why teaching systemd to set no_new_privs
is not necessarily a good idea), and it references the new docs
from include/linux/prctl.h.

Suggested-by: Rob Landley <rob@landley.net>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-07-08 00:25:48 +10:00
Sylwester Nawrocki
ec3ed85f92 [media] Revert "[media] V4L: JPEG class documentation corrections"
This reverts commit feed0258e1, as the same issues
are already covered in another version of that patch that
was also applied (579e92ffac).

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-07-07 00:12:50 -03:00
Laxman Dewangan
19228a6a59 regulator: tps65910: add support for input supply
There is multiple voltage input pins on device which
takes the voltage input for different voltage regulator.
Support to configure the voltage input supplied by
different regulator for each regulators.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-06 19:11:05 +01:00
Ingo Molnar
5c09d127a1 Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull the RCU tree from Paul E. McKenney:

"The major features of this series are:

1.	Preventing latency spikes of more than 200 microseconds for
	kernels built with NR_CPUS=4096, which is reportedly becoming
	the default for some distros.  This is a first step, as it does
	not help with systems that actually -have- 4096 CPUs (work on
	this case is in progress, but is not yet ready for mainline).
	This category also includes improving concurrency of rcu_barrier(),
	placed here due to conflicts.  Posted to LKML at:
	https://lkml.org/lkml/2012/6/22/381.  Note that patches 18-22
	of that series have been defered to 3.7, as they have not yet
	proven themselves to be mainline-ready (and yes, these are the
	ones intended to get rid of RCU's latency spikes for systems
	that actually have 4096 CPUs).
2.	Updates to documentation and rcutorture fixes, the latter category
	including improvements to rcu_barrier() testing.  Posted to LKML at:
	http://lkml.indiana.edu/hypermail/linux/kernel/1206.1/04094.html.
3.	Miscellaneous fixes posted to LKML at:
	https://lkml.org/lkml/2012/6/22/500, with the exception of the
	last commit, which was posted here:
	http://www.gossamer-threads.com/lists/linux/kernel/1561830
4.	RCU_FAST_NO_HZ fixes and improvements.  Posted to LKML at:
	http://lkml.indiana.edu/hypermail/linux/kernel/1206.1/00006.html
	and http://www.gossamer-threads.com/lists/linux/kernel/1561833.
	The first four patches of the first series went into 3.5 to fix
	a regression.
5.	Code-style fixes.  These were posted to LKML at
	http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/01180.html and
	http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/01181.html.
"

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-06 16:13:58 +02:00
Mike Dunn
021796b892 mtd: ABI documentation: clarification of bitflip_threshold
The -EUCLEAN return value applies to mtd_read_oob() as well as mtd_read(), but
only mtd_read() was mentioned in the blurd on bitflip_threshold in the ABI
documentation.

Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-07-06 15:10:06 +01:00
Paul E. McKenney
02a0677b0b Merge branches 'bigrtm.2012.07.04a', 'doctorture.2012.07.02a', 'fixes.2012.07.06a' and 'fnh.2012.07.02a' into HEAD
bigrtm: First steps towards getting RCU out of the way of
	tens-of-microseconds real-time response on systems compiled
	with NR_CPUS=4096.  Also cleanups for and increased concurrency
	of rcu_barrier() family of primitives.
doctorture: rcutorture and documentation improvements.
fixes:  Miscellaneous fixes.
fnh: RCU_FAST_NO_HZ fixes and improvements.
2012-07-06 05:59:30 -07:00
Linus Torvalds
6bc51545da Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fix from Marcelo Tosatti:
 "Memory leak and oops on the x86 mmu code, and sanitization of the
  KVM_IRQFD ioctl."

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: MMU: fix shrinking page from the empty mmu
  KVM: fix fault page leak
  KVM: Sanitize KVM_IRQFD flags
  KVM: Add missing KVM_IRQFD API documentation
  KVM: Pass kvm_irqfd to functions
2012-07-05 13:16:21 -07:00
Linus Torvalds
62ad64498a Merge branch 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux
Pull DT fixes from Rob Herring:
 "Mainly some documentation updates and 2 fixes:

   - An export symbol fix for of_platform_populate from Stephen W.
   - A fix for the order compatible entries are matched to ensure the
     first compatible string is matched when there are multiple matches."

Normally these would go through Grant Likely (thus the "fixes-for-grant"
branch name), but Grant is in the middle of moving to Scotland, and is
practically offline until sometime in August. So pull directly from Rob.

* 'fixes-for-grant' of git://sources.calxeda.com/kernel/linux:
  of: match by compatible property first
  dt: mc13xxx.txt: Fix gpio number assignment
  dt: fsl-fec.txt: Fix gpio number assignment
  dt: fsl-mma8450.txt: Add missing 'reg' description
  dt: fsl-imx-esdhc.txt: Fix gpio number assignment
  dt: fsl-imx-cspi.txt: Fix comment about GPIOs used for chip selects
  of: Add Avionic Design vendor prefix
  of: export of_platform_populate()
2012-07-05 11:53:47 -07:00
Laxman Dewangan
6be5bfc3bf regulator: fixed: dt: support for input supply
Add support for input supply in DT parsing of node.
The input supply will be provided by the property
"vin-supply" in the regulator node.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-05 13:49:35 +01:00
Laxman Dewangan
8c5e461df7 regulator: dt: add policy to have property "regulator-compatible"
Add the policy for regulator DT such that if device have multiple
regulator and its binding contains a child node that describes each
regulator then each regulator child node must have the property
"regulator-compatible" which matches with regulator name of their
hardware counterparts.
Modify the DT documentation of regulator devices to reflect this
policy.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-05 13:13:11 +01:00
Linus Torvalds
a3da2c6913 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block bits from Jens Axboe:
 "As vacation is coming up, thought I'd better get rid of my pending
  changes in my for-linus branch for this iteration.  It contains:

   - Two patches for mtip32xx.  Killing a non-compliant sysfs interface
     and moving it to debugfs, where it belongs.

   - A few patches from Asias.  Two legit bug fixes, and one killing an
     interface that is no longer in use.

   - A patch from Jan, making the annoying partition ioctl warning a bit
     less annoying, by restricting it to !CAP_SYS_RAWIO only.

   - Three bug fixes for drbd from Lars Ellenberg.

   - A fix for an old regression for umem, it hasn't really worked since
     the plugging scheme was changed in 3.0.

   - A few fixes from Tejun.

   - A splice fix from Eric Dumazet, fixing an issue with pipe
     resizing."

* 'for-linus' of git://git.kernel.dk/linux-block:
  scsi: Silence unnecessary warnings about ioctl to partition
  block: Drop dead function blk_abort_queue()
  block: Mitigate lock unbalance caused by lock switching
  block: Avoid missed wakeup in request waitqueue
  umem: fix up unplugging
  splice: fix racy pipe->buffers uses
  drbd: fix null pointer dereference with on-congestion policy when diskless
  drbd: fix list corruption by failing but already aborted reads
  drbd: fix access of unallocated pages and kernel panic
  xen/blkfront: Add WARN to deal with misbehaving backends.
  blkcg: drop local variable @q from blkg_destroy()
  mtip32xx: Create debugfs entries for troubleshooting
  mtip32xx: Remove 'registers' and 'flags' from sysfs
  blkcg: fix blkg_alloc() failure path
  block: blkcg_policy_cfq shouldn't be used if !CONFIG_CFQ_GROUP_IOSCHED
  block: fix return value on cfq_init() failure
  mtip32xx: Remove version.h header file inclusion
  xen/blkback: Copy id field when doing BLKIF_DISCARD.
2012-07-03 15:45:10 -07:00
Linus Torvalds
3492ee7274 Four minor thin provisioning fixes and correct and update dm-verity
documentation.
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Merge tag 'dm-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm

Pull device-mapper fixes from Alasdair G Kergon:
 "Four minor thin provisioning fixes and correct and update dm-verity
  documentation."

* tag 'dm-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm: verity fix documentation
  dm persistent data: fix allocation failure in space map checker init
  dm persistent data: handle space map checker creation failure
  dm persistent data: fix shadow_info_leak on dm_tm_destroy
  dm thin: commit metadata before creating metadata snapshot
2012-07-03 11:08:16 -07:00
Oskar Schirmer
8d2c794108 PM / Documentation: fix typos in power management description
Just two missing characters.

Signed-off-by: Oskar Schirmer <oskar@scara.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-03 18:32:51 +02:00
Milan Broz
18068bdd5f dm: verity fix documentation
Veritysetup is now part of cryptsetup package.
Remove on-disk header description (which is not parsed in kernel)
and point users to cryptsetup where it the format is documented.
Mention units for block size paramaters.
Fix target line specification and dmsetup parameters.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-07-03 12:55:41 +01:00
Andy Lutomirski
09b243577b security: document no_new_privs
Document no_new_privs.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-07-03 12:35:36 +10:00
Alex Williamson
f36992e312 KVM: Add missing KVM_IRQFD API documentation
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-07-02 21:10:30 -03:00
Paul E. McKenney
74d874e7bd rcu: Update documentation to cover call_srcu() and srcu_barrier().
The advent of call_srcu() and srcu_barrier() obsoleted some of the
documentation, so this commit brings that up to date.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2012-07-02 12:34:03 -07:00
Paul E. McKenney
f885b7f2b2 rcu: Control RCU_FANOUT_LEAF from boot-time parameter
Although making RCU_FANOUT_LEAF a kernel configuration parameter rather
than a fixed constant makes it easier for people to decrease cache-miss
overhead for large systems, it is of little help for people who must
run a single pre-built kernel binary.

This commit therefore allows the value of RCU_FANOUT_LEAF to be
increased (but not decreased!) via a boot-time parameter named
rcutree.rcu_fanout_leaf.

Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2012-07-02 12:33:20 -07:00
Mark Brown
744c62eb65 Linux 3.5-rc5
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Merge tag 'v3.5-rc5' into regulator-drivers

Linux 3.5-rc5 collides with further development.

Conflicts:
	drivers/regulator/tps65023-regulator.c
2012-07-02 18:24:59 +01:00
Sameer Nanda
4b7760ba0d PM / Sleep: add knob for printing device resume times
Added a new knob called /sys/power/pm_print_times. Setting it to 1
enables printing of time taken by devices to suspend and resume.
Setting it to 0 disables this printing (unless overridden by
initcall_debug kernel command line option).

Signed-off-by: Sameer Nanda <snanda@chromium.org>
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-01 13:31:22 +02:00
Bojan Smojver
62c552ccc3 PM / Hibernate: Enable suspend to both for in-kernel hibernation.
It is often useful to suspend to memory after hibernation image has been
written to disk. If the battery runs out or power is otherwise lost, the
computer will resume from the hibernated image. If not, it will resume
from memory and hibernation image will be discarded.

Signed-off-by: Bojan Smojver <bojan@rexursive.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-01 13:31:22 +02:00
Linus Torvalds
21f27291f5 Driver Core fixes for 3.5-rc5
Here is a number of printk() fixes, specifically a few reported by the
 crazy blog program that ships in SUSE releases (that's "boot log" and
 not "web log", it predates the general "blog" terminology by many
 years), and the restoration of the continuation line functionality
 reported by Stephen and others.  Yes, the changes seem a bit big this
 late in the cycle, but I've been beating on them for a while now, and
 Stephen has even optimized it a bit, so all looks good to me.
 
 The other change in here is a Documentation update for the stable kernel
 rules describing how some distro patches should be backported, to
 hopefully drive a bit more response from the distros to the stable
 kernel releases.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver Core fixes from Greg Kroah-Hartman:
 "Here is a number of printk() fixes, specifically a few reported by the
  crazy blog program that ships in SUSE releases (that's "boot log" and
  not "web log", it predates the general "blog" terminology by many
  years), and the restoration of the continuation line functionality
  reported by Stephen and others.  Yes, the changes seem a bit big this
  late in the cycle, but I've been beating on them for a while now, and
  Stephen has even optimized it a bit, so all looks good to me.

  The other change in here is a Documentation update for the stable
  kernel rules describing how some distro patches should be backported,
  to hopefully drive a bit more response from the distros to the stable
  kernel releases.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'driver-core-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  printk: Optimize if statement logic where newline exists
  printk: flush continuation lines immediately to console
  syslog: fill buffer with more than a single message for SYSLOG_ACTION_READ
  Revert "printk: return -EINVAL if the message len is bigger than the buf size"
  printk: fix regression in SYSLOG_ACTION_CLEAR
  stable: Allow merging of backports for serious user-visible performance issues
2012-06-30 10:11:24 -07:00
Linus Torvalds
aace99e57c Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab.

Trivial conflict due to new USB HID ID's being added next to each other
(Baanto vs Axentia).

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (44 commits)
  [media] smia: Fix compile failures
  [media]  Fix VIDIOC_DQEVENT docbook entry
  [media] s5p-fimc: Fix control creation function
  [media] s5p-mfc: Fix checkpatch error in s5p_mfc_shm.h file
  [media] s5p-mfc: Fix setting controls
  [media] v4l/s5p-mfc: added image size align in VIDIOC_TRY_FMT
  [media] v4l/s5p-mfc: corrected encoder v4l control definitions
  [media] v4l: mem2mem_testdev: Fix race conditions in driver
  [media] s5p-mfc: Bug fix of timestamp/timecode copy mechanism
  [media] cxd2820r: Fix an incorrect modulation type bitmask
  [media] em28xx: Show a warning if the board does not support remote controls
  [media] em28xx: Add remote control support for Terratec's Cinergy HTC Stick HD
  [media] USB: Staging: media: lirc: initialize spinlocks before usage
  [media] Revert "[media] media: mx2_camera: Fix mbus format handling"
  [media] bw-qcam: driver and pixfmt documentation fixes
  [media] cx88: fix firmware load on big-endian systems
  [media] cx18: support big-endian systems
  [media] ivtv: fix support for big-endian systems
  [media] tuner-core: return the frequency range of the correct tuner
  [media] v4l2-dev.c: fix g_parm regression in determine_valid_ioctls()
  ...
2012-06-25 14:53:09 -07:00