kernel/kernel-generic.git
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
Linus Torvalds [Mon, 1 Aug 2011 23:48:31 +0000 (13:48 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set
  VFS: Reorganise shrink_dcache_for_umount_subtree() after demise of dcache_lock
  VFS: Remove dentry->d_lock locking from shrink_dcache_for_umount_subtree()
  VFS: Remove detached-dentry counter from shrink_dcache_for_umount_subtree()
  switch posix_acl_chmod() to umode_t
  switch posix_acl_from_mode() to umode_t
  switch posix_acl_equiv_mode() to umode_t *
  switch posix_acl_create() to umode_t *
  block: initialise bd_super in bdget()
  vfs: avoid call to inode_lru_list_del() if possible
  vfs: avoid taking inode_hash_lock on pipes and sockets
  vfs: conditionally call inode_wb_list_del()
  VFS: Fix automount for negative autofs dentries
  Btrfs: load the key from the dir item in readdir into a fake dentry
  devtmpfs: missing initialialization in never-hit case
  hppfs: missing include

13 years agoMerge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Mon, 1 Aug 2011 23:46:37 +0000 (13:46 -1000)]
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (37 commits)
  Improve slave/cyclic DMA engine documentation
  dmaengine: pl08x: handle the rest of enums in pl08x_width
  DMA: PL08x: cleanup selection of burst size
  DMA: PL08x: avoid recalculating cctl at each prepare
  DMA: PL08x: cleanup selection of buswidth
  DMA: PL08x: constify plchan->cd and plat->slave_channels
  DMA: PL08x: separately store source/destination cctl
  DMA: PL08x: separately store source/destination slave address
  DMA: PL08x: clean up LLI debugging
  DMA: PL08x: select LLI bus only once per LLI setup
  DMA: PL08x: remove unused constants
  ARM: mxs-dma: reset after disable channel
  dma: intel_mid_dma: remove redundant pci_set_drvdata calls
  dma: mxs-dma: fix unterminated platform_device_id table
  dmaengine: pl330: make platform data optional
  dmaengine: imx-sdma: return proper error if kzalloc fails
  pch_dma: Fix CTL register access issue
  dmaengine: mxs-dma: skip request_irq for NO_IRQ
  dmaengine/coh901318: fix slave submission semantics
  dmaengine/ste_dma40: allow memory buswidth/burst to be configured
  ...

Fix trivial whitespace conflict in drivers/dma/mv_xor.c

13 years agoMerge branch 'gpiolib' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Mon, 1 Aug 2011 23:41:43 +0000 (13:41 -1000)]
Merge branch 'gpiolib' of git://git./linux/kernel/git/aegl/linux-2.6

* 'gpiolib' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Hook up gpiolib support

13 years agoMerge branch 'pstore-efi' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Mon, 1 Aug 2011 23:40:51 +0000 (13:40 -1000)]
Merge branch 'pstore-efi' of git://git./linux/kernel/git/aegl/linux-2.6

* 'pstore-efi' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  efivars: Introduce PSTORE_EFI_ATTRIBUTES
  efivars: Use string functions in pstore_write
  efivars: introduce utf16_strncmp
  efivars: String functions
  efi: Add support for using efivars as a pstore backend
  pstore: Allow the user to explicitly choose a backend
  pstore: Make "part" unsigned
  pstore: Add extra context for writes and erases
  pstore: Extend API for more flexibility in new backends

13 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel...
Linus Torvalds [Mon, 1 Aug 2011 23:39:40 +0000 (13:39 -1000)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jwessel/linux-2.6-kgdb

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
  kdb,kgdb: Allow arbitrary kgdb magic knock sequences
  kdb: Remove all references to DOING_KGDB2
  kdb,kgdb: Implement switch and pass buffer from kdb -> gdb
  kdb: cleanup unused variables missed in the original kdb merge

13 years agokdb,kgdb: Allow arbitrary kgdb magic knock sequences
Jason Wessel [Tue, 24 May 2011 15:43:06 +0000 (10:43 -0500)]
kdb,kgdb: Allow arbitrary kgdb magic knock sequences

The first packet that gdb sends when the kernel is in kdb mode seems
to change with every release of gdb.  Instead of continuing to add
many different gdb packets, change kdb to automatically look for any
thing that looks like a gdb packet.

Example 1 cold start test:
echo g > /proc/sysrq-trigger
$D#44+

Example 2 cold start test:
echo g > /proc/sysrq-trigger
$3#33

The second one should re-enter kdb's shell right away and is purely a
test.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
13 years agokdb: Remove all references to DOING_KGDB2
Jason Wessel [Mon, 23 May 2011 18:22:54 +0000 (13:22 -0500)]
kdb: Remove all references to DOING_KGDB2

The DOING_KGDB2 was originally a state variable for one of the two
ways to automatically transition from kdb to kgdb.  Purge all these
variables and just use one single state for the transition.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
13 years agokdb,kgdb: Implement switch and pass buffer from kdb -> gdb
Jason Wessel [Mon, 23 May 2011 18:17:41 +0000 (13:17 -0500)]
kdb,kgdb: Implement switch and pass buffer from kdb -> gdb

When switching from kdb mode to kgdb mode packets were getting lost
depending on the size of the fifo queue of the serial chip.  When gdb
initially connects if it is in kdb mode it should entirely send any
character buffer over to the gdbstub when switching connections.

Previously kdb was zero'ing out the character buffer and this could
lead to gdb failing to connect at all, or a lengthy pause could occur
on the initial connect.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
13 years agokdb: cleanup unused variables missed in the original kdb merge
Jason Wessel [Thu, 30 Jun 2011 19:12:00 +0000 (14:12 -0500)]
kdb: cleanup unused variables missed in the original kdb merge

The BTARGS and BTSYMARG variables do not have any function in the
mainline version of kdb.

Reported-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Mon, 1 Aug 2011 16:14:25 +0000 (06:14 -1000)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  CIFS: Cleanup demupltiplex thread exiting code
  CIFS: Move mid search to a separate function
  CIFS: Move RFC1002 check to a separate function
  CIFS: Simplify socket reading in demultiplex thread
  CIFS: Move buffer allocation to a separate function
  cifs: remove unneeded variable initialization in cifs_reconnect_tcon
  cifs: simplify refcounting for oplock breaks
  cifs: fix compiler warning in CIFSSMBQAllEAs
  cifs: fix name parsing in CIFSSMBQAllEAs
  cifs: don't start signing too early
  cifs: trivial: goto out here is unnecessary
  cifs: advertise the right receive buffer size to the server

13 years agoMerge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Mon, 1 Aug 2011 16:13:48 +0000 (06:13 -1000)]
Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6

* 'gpio/next' of git://git.secretlab.ca/git/linux-2.6:
  gpio_msm: Move Qualcomm MSM v2 gpio driver into drivers
  gpio_msm: Move Qualcomm v6 MSM driver into drivers
  msm: gpio: Fold register defs into C file
  msm: gpiomux: Move public API to public header
  msm: gpio: Remove ifdefs on gpio chip registers
  msm: gpio: Remove chip-specific register definitions
  msm: Remove chip-ifdefs for GPIO io mappings
  msm: gpio: Remove unsupported devices
  gpio: ab8500: fix MODULE_ALIAS for ab8500
  of/gpio: export of_gpio_simple_xlate

13 years agoMerge branch 'for-3.1-rc1' of git://gitorious.org/linux-omap-dss2/linux
Linus Torvalds [Mon, 1 Aug 2011 16:13:05 +0000 (06:13 -1000)]
Merge branch 'for-3.1-rc1' of git://gitorious.org/linux-omap-dss2/linux

* 'for-3.1-rc1' of git://gitorious.org/linux-omap-dss2/linux: (31 commits)
  OMAP: DSS2: HDMI: fix hdmi clock name
  HACK: OMAP: DSS2: clk hack for OMAP2/3
  OMAP: DSS2: DSS: Fix context save/restore
  OMAP: DSS2: DISPC: Fix context save/restore
  OMAP: DSS2: Remove ctx loss count from dss.c
  OMAP: DSS2: Remove unused code from display.c
  OMAP: DSS2: DISPC: remove finegrained clk enables/disables
  OMAP: DSS2: Remove unused opt_clock_available
  OMAP: DSS2: Use PM runtime & HWMOD support
  OMAP: DSS2: Remove CONFIG_OMAP2_DSS_SLEEP_BEFORE_RESET
  OMAP: DSS2: Remove core_dump_clocks
  OMAP: DSS2: DPI: remove unneeded SYSCK enable/disable
  OMAP: DSS2: Use omap_pm_get_dev_context_loss_count to get ctx loss count
  OMAP: DSS2: rewrite use of context_loss_count
  OMAP: DSS2: Remove clk optimization at dss init
  OMAP: DSS2: Fix init and unit sequence
  OMAP: DSS2: Clean up probe for DSS & DSI
  OMAP: DSS2: Handle dpll4_m4_ck in dss_get/put_clocks
  OMAP: DSS2: Fix FIFO threshold and burst size for OMAP4
  OMAP: DSS2: DSI: sync when disabling a display
  ...

13 years agoMerge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Mon, 1 Aug 2011 16:10:16 +0000 (06:10 -1000)]
Merge branch 'sh-latest' of git://git./linux/kernel/git/lethal/sh-3.x

* 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x: (39 commits)
  SH: static should be at beginning of declaration
  sh: move CLKDEV_xxx_ID macro to sh_clk.h
  sh: clock-shx3: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7786: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7785: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7757: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7366: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7343: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7722: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7724: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7366: modify I2C clock settings
  sh: clock-sh7343: modify I2C clock settings
  sh: clock-sh7723: modify I2C clock settings
  sh: clock-sh7722: modify I2C clock settings
  sh: clock-sh7724: modify I2C clock settings
  serial: sh-sci: Fix up pretty name printing for port IRQs.
  serial: sh-sci: Kill off per-port enable/disable callbacks.
  serial: sh-sci: Add missing module description/author bits.
  serial: sh-sci: Regtype probing doesn't need to be fatal.
  sh: Tidy up pre-clkdev clk_get() error handling.
  ...

13 years agoMerge branch 'msm-move-gpio' of git://codeaurora.org/quic/kernel/davidb/linux-msm...
Grant Likely [Mon, 1 Aug 2011 14:16:05 +0000 (15:16 +0100)]
Merge branch 'msm-move-gpio' of git://codeaurora.org/quic/kernel/davidb/linux-msm into gpio/next

Conflicts:
drivers/gpio/Kconfig
drivers/gpio/Makefile

13 years agoCIFS: Cleanup demupltiplex thread exiting code
Pavel Shilovsky [Mon, 1 Aug 2011 09:19:44 +0000 (13:19 +0400)]
CIFS: Cleanup demupltiplex thread exiting code

Reviewed-and-Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoCIFS: Move mid search to a separate function
Pavel Shilovsky [Mon, 1 Aug 2011 09:19:43 +0000 (13:19 +0400)]
CIFS: Move mid search to a separate function

Reviewed-and-Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoCIFS: Move RFC1002 check to a separate function
Pavel Shilovsky [Mon, 1 Aug 2011 09:19:42 +0000 (13:19 +0400)]
CIFS: Move RFC1002 check to a separate function

Reviewed-and-Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoCIFS: Simplify socket reading in demultiplex thread
Pavel Shilovsky [Mon, 1 Aug 2011 09:19:41 +0000 (13:19 +0400)]
CIFS: Simplify socket reading in demultiplex thread

Move reading to separate function and remove csocket variable.

Also change semantic in a little: goto incomplete_rcv only when
we get -EAGAIN (or a familiar error) while reading rfc1002 header.
In this case we don't check for echo timeout when we don't get whole
header at once, as it was before.

Reviewed-and-Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoCIFS: Move buffer allocation to a separate function
Pavel Shilovsky [Mon, 1 Aug 2011 09:19:40 +0000 (13:19 +0400)]
CIFS: Move buffer allocation to a separate function

Reviewed-and-Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agogpio_msm: Move Qualcomm MSM v2 gpio driver into drivers
David Brown [Mon, 16 May 2011 22:53:38 +0000 (15:53 -0700)]
gpio_msm: Move Qualcomm MSM v2 gpio driver into drivers

Migrate the driver for the v7-based MSM chips into drivers/gpio.  The
driver is unchanged, only moved.

Change-Id: I810db5b50b71cdca4e869aa0d0310f7f48781a55
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agogpio_msm: Move Qualcomm v6 MSM driver into drivers
David Brown [Mon, 16 May 2011 20:57:39 +0000 (13:57 -0700)]
gpio_msm: Move Qualcomm v6 MSM driver into drivers

Migrate the driver for the v6-based MSM chips into drivers/gpio.  The
driver is unchanged, only moved.

Change-Id: I03ba597b95b4d62b42da112a8efac88d67aa40f9
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agomsm: gpio: Fold register defs into C file
David Brown [Mon, 6 Jun 2011 21:09:45 +0000 (14:09 -0700)]
msm: gpio: Fold register defs into C file

No need to have a separate header file containing only register
definitions that are used by a single driver.  Fold these into the
gpio driver.

Signed-off-by: David Brown <davidb@codeaurora.org>
13 years agomsm: gpiomux: Move public API to public header
David Brown [Mon, 16 May 2011 20:32:15 +0000 (13:32 -0700)]
msm: gpiomux: Move public API to public header

The gpiomux.h header contains some SOC ifdefs.  However, the API that
is actually used by the GPIO driver only uses two functions that are
general.  Move these general definitions into a public header file.

Change-Id: Ia5df8af87dba268225598d56908e523bcfc24ef6
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agomsm: gpio: Remove ifdefs on gpio chip registers
David Brown [Thu, 12 May 2011 08:28:01 +0000 (01:28 -0700)]
msm: gpio: Remove ifdefs on gpio chip registers

Select the GPIO register configuration at runtime rather than through
idefs.

Change-Id: I02ea0a3d61bc81669f32097c32420f0688552231
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agomsm: gpio: Remove chip-specific register definitions
David Brown [Thu, 12 May 2011 08:16:46 +0000 (01:16 -0700)]
msm: gpio: Remove chip-specific register definitions

Put an SOC prefix on each GPIO register definition, eliminating the
need to have SOC ifdefs around the definitions.

Change-Id: I5a01fd328a89ce1be610847934d6e118f5465e42
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agomsm: Remove chip-ifdefs for GPIO io mappings
David Brown [Thu, 12 May 2011 07:54:36 +0000 (00:54 -0700)]
msm: Remove chip-ifdefs for GPIO io mappings

The two GPIO controllers are always mapped to the same virtual address
across all MSM devices.  Instead of selecting this at compile time,
determine the physical address at runtime, eliminating yet something
else preventing multiple MSM targets from being compiled into the same
kernel.

Change-Id: I1672219d978ab6243526adeda6badf49472baa27
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agomsm: gpio: Remove unsupported devices
David Brown [Thu, 12 May 2011 07:33:38 +0000 (00:33 -0700)]
msm: gpio: Remove unsupported devices

The MSM7x25 and MSM7x27 devices are not yet supported in the kernel.
Remove #ifdef-based tables supporting these chips for now.

Change-Id: I4d9f5abc4cc0942ce75a067097b072489493c1b8
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
13 years agoOMAP: DSS2: HDMI: fix hdmi clock name
Tomi Valkeinen [Mon, 1 Aug 2011 11:54:44 +0000 (14:54 +0300)]
OMAP: DSS2: HDMI: fix hdmi clock name

The HDMI clock (hdmi_clk) is missing in the current OMAP4 HWMOD
database. Fix this in the DSS driver by using the old clock name
(dss_48mhz_clk).

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
13 years agoHACK: OMAP: DSS2: clk hack for OMAP2/3
Tomi Valkeinen [Mon, 1 Aug 2011 11:32:23 +0000 (14:32 +0300)]
HACK: OMAP: DSS2: clk hack for OMAP2/3

The HWMOD data for OMAP2 and 3 are currently not up to date regarding
DSS (OMAP4 HWMOD data is fine). This patch makes the DSS driver to get
the opt clocks needed for OMAP2/3 with the old clock names, thus
allowing DSS driver to use runtime PM.

The HWMOD databases should be fixes ASAP, and this patch can be reverted
after that.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
13 years agoxfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set
Markus Trippelsdorf [Tue, 26 Jul 2011 09:15:20 +0000 (11:15 +0200)]
xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set

commit 4e34e719e45, that takes the ACL checks to common code,
accidentely broke the build when CONFIG_FS_POSIX_ACL is not set:

  CC      fs/xfs/linux-2.6/xfs_iops.o
fs/xfs/linux-2.6/xfs_iops.c:1025:14: error: ‘xfs_get_acl’ undeclared here (not in a function)

Fix this by declaring xfs_get_acl a static inline function.

Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoVFS: Reorganise shrink_dcache_for_umount_subtree() after demise of dcache_lock
David Howells [Tue, 7 Jun 2011 13:09:30 +0000 (14:09 +0100)]
VFS: Reorganise shrink_dcache_for_umount_subtree() after demise of dcache_lock

Reorganise shrink_dcache_for_umount_subtree() in light of the demise of
dcache_lock.  Without that dcache_lock, there is no need for the batching of
removal of dentries from the system under it (we wanted to make intensive use
of the locked data whilst we held it, but didn't want to hold it for long at a
time).

This works, provided the preceding patch is correct in its removal of locking
on dentry->d_lock on the basis that no one should be locking these dentries any
more as the whole superblock is defunct.

With this patch, the calls to dentry_lru_del() and __d_shrink() are placed at
the point where each dentry is detached handled.

It is possible that, as an alternative, the batching should still be done -
but only for dentry_lru_del() of all a dentry's children in one go.  In such a
case, the batching would be done under dcache_lru_lock.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoVFS: Remove dentry->d_lock locking from shrink_dcache_for_umount_subtree()
David Howells [Tue, 7 Jun 2011 13:09:20 +0000 (14:09 +0100)]
VFS: Remove dentry->d_lock locking from shrink_dcache_for_umount_subtree()

Locks of the dcache_lock were replaced by locks of dentry->d_lock in commits
such as:

2304450783dfde7b0b94ae234edd0dbffa865073
2fd6b7f50797f2e993eea59e0a0b8c6399c811dc

as part of the RCU-based pathwalk changes, despite the fact that the caller
(shrink_dcache_for_umount()) notes in the banner comment the reasons that
d_lock is not necessary in these functions:

/*
 * destroy the dentries attached to a superblock on unmounting
 * - we don't need to use dentry->d_lock because:
 *   - the superblock is detached from all mountings and open files, so the
 *     dentry trees will not be rearranged by the VFS
 *   - s_umount is write-locked, so the memory pressure shrinker will ignore
 *     any dentries belonging to this superblock that it comes across
 *   - the filesystem itself is no longer permitted to rearrange the dentries
 *     in this superblock
 */

So remove these locks.  If the locks are actually necessary, then this banner
comment should be altered instead.

The hash table chains are protected by 1-bit locks in the hash table heads, so
those shouldn't be a problem.

Note that to make this work, __d_drop() has to be split so that the RCUwalk
barrier can be avoided.  This causes problems otherwise as it has an assertion
that dentry->d_lock is locked - but there is no need for that as no one else
can be trying to access this dentry, except to step over it (and that should
be handled by d_free(), I think).

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoVFS: Remove detached-dentry counter from shrink_dcache_for_umount_subtree()
David Howells [Tue, 7 Jun 2011 13:09:10 +0000 (14:09 +0100)]
VFS: Remove detached-dentry counter from shrink_dcache_for_umount_subtree()

Remove the detached-dentry counter from shrink_dcache_for_umount_subtree() as
the value it computes is no longer used as of commit
312d3ca856d369bb04d0443846b85b4cdde6fa8a which made the nr_dentry counters
summed per-CPU rather than global atomic.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoswitch posix_acl_chmod() to umode_t
Al Viro [Sat, 23 Jul 2011 23:03:11 +0000 (19:03 -0400)]
switch posix_acl_chmod() to umode_t

again, that's what all callers pass to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoswitch posix_acl_from_mode() to umode_t
Al Viro [Sat, 23 Jul 2011 23:01:48 +0000 (19:01 -0400)]
switch posix_acl_from_mode() to umode_t

... seeing that this is what all callers pass to it anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoswitch posix_acl_equiv_mode() to umode_t *
Al Viro [Sat, 23 Jul 2011 22:56:36 +0000 (18:56 -0400)]
switch posix_acl_equiv_mode() to umode_t *

... so that &inode->i_mode could be passed to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoswitch posix_acl_create() to umode_t *
Al Viro [Sat, 23 Jul 2011 22:37:50 +0000 (18:37 -0400)]
switch posix_acl_create() to umode_t *

so we can pass &inode->i_mode to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoblock: initialise bd_super in bdget()
Lachlan McIlroy [Thu, 30 Jun 2011 01:01:45 +0000 (11:01 +1000)]
block: initialise bd_super in bdget()

bd_super is currently reset to NULL in kill_block_super() so we rely on previous
users of the block_device object to initialise this value for the next user.
This quirk was exposed on RHEL5 when a third party filesystem did not always use
kill_block_super() and therefore bd_super wasn't being reset when a block_device
object was recycled within the cache.  This may not be a problem upstream but
makes sense to be defensive.

Signed-off-by: Lachlan McIlroy <lmcilroy@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agovfs: avoid call to inode_lru_list_del() if possible
Eric Dumazet [Thu, 28 Jul 2011 04:55:13 +0000 (06:55 +0200)]
vfs: avoid call to inode_lru_list_del() if possible

inode_lru_list_del() is expensive because of per superblock lru locking,
while some inodes are not in lru list.

Adding a check in iput_final() can speedup pipe/sockets workloads on
SMP.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agovfs: avoid taking inode_hash_lock on pipes and sockets
Eric Dumazet [Thu, 28 Jul 2011 04:41:09 +0000 (06:41 +0200)]
vfs: avoid taking inode_hash_lock on pipes and sockets

Some inodes (pipes, sockets, ...) are not hashed, no need to take
contended inode_hash_lock at dismantle time.

nice speedup on SMP machines on socket intensive workloads.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agovfs: conditionally call inode_wb_list_del()
Eric Dumazet [Thu, 28 Jul 2011 04:11:47 +0000 (06:11 +0200)]
vfs: conditionally call inode_wb_list_del()

Some inodes (pipes, sockets, ...) are not in bdi writeback list.

evict() can avoid calling inode_wb_list_del() and its expensive spinlock
by checking inode i_wb_list being empty or not.

At this point, no other cpu/user can concurrently manipulate this inode
i_wb_list

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoVFS: Fix automount for negative autofs dentries
David Howells [Mon, 11 Jul 2011 13:20:57 +0000 (14:20 +0100)]
VFS: Fix automount for negative autofs dentries

Autofs may set the DCACHE_NEED_AUTOMOUNT flag on negative dentries.  These
need attention from the automounter daemon regardless of the LOOKUP_FOLLOW flag.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoBtrfs: load the key from the dir item in readdir into a fake dentry
Josef Bacik [Tue, 28 Jun 2011 20:18:59 +0000 (16:18 -0400)]
Btrfs: load the key from the dir item in readdir into a fake dentry

In btrfs we have 2 indexes for inodes.  One is for readdir, it's in this nice
sequential order and works out brilliantly for readdir.  However if you use ls,
it usually stat's each file it gets from readdir.  This is where the second
index comes in, which is based on a hash of the name of the file.  So then the
lookup has to lookup this index, and then lookup the inode.  The index lookup is
going to be in random order (since its based on the name hash), which gives us
less than stellar performance.  Since we know the inode location from the
readdir index, I create a dummy dentry and copy the location key into
dentry->d_fsdata.  Then on lookup if we have d_fsdata we use that location to
lookup the inode, avoiding looking up the other directory index.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Linus Torvalds [Mon, 1 Aug 2011 00:31:44 +0000 (14:31 -1000)]
Merge branch 'for-next' of git://git./linux/kernel/git/sameo/mfd-2.6

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (46 commits)
  mfd: Fix mismatch in twl4030 mutex lock-unlock
  mfd: twl6030-pwm.c needs MODULE_LICENSE
  mfd: Fix the omap-usb-host clock API usage on usbhs_disable()
  mfd: Acknowledge WM8994 IRQs before reporting
  mfd: Acknowlege all WM831x IRQs before we handle them
  mfd: Avoid two assignments if failures happen in tps65910_i2c_probe
  regulator: Storing tps65912 error codes in u8
  mfd: Don't leak init_data in tps65910_i2c_probe
  regulator: aat2870: Add AAT2870 regulator driver
  backlight: Add AAT2870 backlight driver
  mfd: Add AAT2870 mfd driver
  mfd: Remove dead code from max8997-irq
  mfd: Move TPS55910 Kconfig option
  mfd: Fix missing stmpe kerneldoc
  mfd: Fix off-by-one value range checking for tps65912_i2c_write
  mfd: Add devices for WM831x clocking module
  mfd: Remove comp{1,2}_threshold sysfs entries in tps65911_comparator_remove
  mfd: Don't ask about the TPS65912 core driver in Kconfig
  mfd: Fix off by one in WM831x IRQ code
  mfd: Add tps65921 support from twl-core
  ...

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Mon, 1 Aug 2011 00:30:59 +0000 (14:30 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/math-emu: Remove unnecessary code
  m68k/math-emu: Remove commented out old code
  m68k: Kill warning in setup_arch() when compiling for Sun3
  m68k/atari: Prefix GPIO_{IN,OUT} with CODEC_
  sparc: iounmap() and *_free_coherent() - Use lookup_resource()
  m68k/atari: Reserve some ST-RAM early on for device buffer use
  m68k/amiga: Chip RAM - Use lookup_resource()
  resources: Add lookup_resource()
  sparc: _sparc_find_resource() should check for exact matches
  m68k/amiga: Chip RAM - Offset resource end by CHIP_PHYSADDR
  m68k/amiga: Chip RAM - Use resource_size() to fix off-by-one error
  m68k/amiga: Chip RAM - Change chipavail to an atomic_t
  m68k/amiga: Chip RAM - Always allocate from the start of memory
  m68k/amiga: Chip RAM - Convert from printk() to pr_*()
  m68k/amiga: Chip RAM - Use tabs for indentation

13 years agoNFS: Re-enable compilation of nfs with !CONFIG_NFS_V4 || !CONFIG_NFS_V4_1
Trond Myklebust [Sun, 31 Jul 2011 20:39:04 +0000 (16:39 -0400)]
NFS: Re-enable compilation of nfs with !CONFIG_NFS_V4 || !CONFIG_NFS_V4_1

Fix two recently introduced compile problems:

Fix a typo in fs/nfs/pnfs.h

Move the pnfs_blksize declaration outside the CONFIG_NFS_V4 section in
struct nfs_server.

Reported-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomfd: Fix mismatch in twl4030 mutex lock-unlock
Sanjeev Premi [Mon, 11 Jul 2011 15:20:31 +0000 (20:50 +0530)]
mfd: Fix mismatch in twl4030 mutex lock-unlock

A mutex is locked on entry into twl4030_madc_conversion().
Immediate return on some error conditions leaves the
mutex locked.

This patch ensures that mutex is always unlocked before
leaving the function.

Signed-off-by: Sanjeev Premi <premi@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: twl6030-pwm.c needs MODULE_LICENSE
Randy Dunlap [Sat, 23 Jul 2011 00:17:08 +0000 (17:17 -0700)]
mfd: twl6030-pwm.c needs MODULE_LICENSE

twl6030_pwm: module license 'unspecified' taints kernel.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Hemanth V <hemanthv@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix the omap-usb-host clock API usage on usbhs_disable()
Keshava Munegowda [Fri, 22 Jul 2011 13:09:30 +0000 (18:39 +0530)]
mfd: Fix the omap-usb-host clock API usage on usbhs_disable()

usbhs_disable function was invoking clk_enable() instead of
clk_disable(), thus only increasing the clock usage counter and
preventing this particular clock from being ever turned off.
Because of this, the power domain of omap4 the USB Host subsystem
would never reach lower power states.This patch calls clk_disable()
in usbhs_disable function

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Acknowledge WM8994 IRQs before reporting
Mark Brown [Thu, 21 Jul 2011 09:09:24 +0000 (10:09 +0100)]
mfd: Acknowledge WM8994 IRQs before reporting

This ensures we never have a window where we've handled an interrupt but
not told the hardware about it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Acknowlege all WM831x IRQs before we handle them
Mark Brown [Wed, 20 Jul 2011 16:05:13 +0000 (17:05 +0100)]
mfd: Acknowlege all WM831x IRQs before we handle them

Ensure that we never have a window where we've handled an interrupt (and
therefore need to be notified of new events) but haven't yet told the
interrupt controller that this is the case (so any new events will be
discarded).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Avoid two assignments if failures happen in tps65910_i2c_probe
Jesper Juhl [Wed, 13 Jul 2011 21:22:26 +0000 (23:22 +0200)]
mfd: Avoid two assignments if failures happen in tps65910_i2c_probe

In drivers/mfd/tps65910.c:tps65910_i2c_probe() there's potential for a
tiny optimization.

We assign to init_data->irq and init_data->irq_base long before we
need them, and there are two potential exits from the function before
they are needed.

Moving the assignments below these two potential exits means we
completely avoid doing them in these two (failure) cases.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agoregulator: Storing tps65912 error codes in u8
Dan Carpenter [Wed, 6 Jul 2011 18:57:18 +0000 (21:57 +0300)]
regulator: Storing tps65912 error codes in u8

get_ctrl_reg() returns -EINVAL so the error handling won't work here
if reg is a u8.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Don't leak init_data in tps65910_i2c_probe
Jesper Juhl [Tue, 5 Jul 2011 22:29:07 +0000 (00:29 +0200)]
mfd: Don't leak init_data in tps65910_i2c_probe

There are a couple of situations where we leak init_data in
drivers/mfd/tps65910.c:tps65910_i2c_probe() - this patch should take
care of them.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agoregulator: aat2870: Add AAT2870 regulator driver
Jin Park [Mon, 4 Jul 2011 08:43:42 +0000 (17:43 +0900)]
regulator: aat2870: Add AAT2870 regulator driver

Add regulator driver for AnalogicTech AAT2870.

Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agobacklight: Add AAT2870 backlight driver
Jin Park [Wed, 29 Jun 2011 14:06:51 +0000 (23:06 +0900)]
backlight: Add AAT2870 backlight driver

Add backlight driver for AnalogicTech AAT2870.

Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Add AAT2870 mfd driver
Jin Park [Mon, 4 Jul 2011 17:48:12 +0000 (19:48 +0200)]
mfd: Add AAT2870 mfd driver

Add mfd core driver for AnalogicTech AAT2870.
The AAT2870 is communication through I2C and contains backlight and
regulator components.

Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Remove dead code from max8997-irq
Jesper Juhl [Sat, 2 Jul 2011 20:38:11 +0000 (22:38 +0200)]
mfd: Remove dead code from max8997-irq

We either hit one of the case's or the default in the switch statement
in get_i2c(), so the 'return ERR_PTR(-EINVAL);' at the end of the
function is just dead code - remove it.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Move TPS55910 Kconfig option
Linus Walleij [Mon, 4 Jul 2011 15:34:16 +0000 (17:34 +0200)]
mfd: Move TPS55910 Kconfig option

Having another TPS chip at the end of the Kconfig when all it's
relatives are grouped together in their own section seems totally
counter-intuitive. Move it, also in the Makefile.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix missing stmpe kerneldoc
Om Prakash [Mon, 27 Jun 2011 07:54:22 +0000 (09:54 +0200)]
mfd: Fix missing stmpe kerneldoc

Generating kerneldoc for STMPE result in warnings, so fix this by
adding missing documentation.

Signed-off-by: Om Prakash <omprakash.pal@stericsson.com>
Reviewed-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix off-by-one value range checking for tps65912_i2c_write
Axel Lin [Fri, 24 Jun 2011 07:34:16 +0000 (15:34 +0800)]
mfd: Fix off-by-one value range checking for tps65912_i2c_write

If bytes == (TPS6591X_MAX_REGISTER + 1), we have a buffer overflow when
doing memcpy(&msg[1], src, bytes).

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Add devices for WM831x clocking module
Mark Brown [Fri, 24 Jun 2011 11:17:07 +0000 (12:17 +0100)]
mfd: Add devices for WM831x clocking module

With the new generic clk API that should appear at some point we should be
able to support the clocking sensibly in Linux.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Remove comp{1,2}_threshold sysfs entries in tps65911_comparator_remove
Axel Lin [Thu, 23 Jun 2011 02:19:16 +0000 (10:19 +0800)]
mfd: Remove comp{1,2}_threshold sysfs entries in tps65911_comparator_remove

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Don't ask about the TPS65912 core driver in Kconfig
Mark Brown [Wed, 22 Jun 2011 13:53:58 +0000 (14:53 +0100)]
mfd: Don't ask about the TPS65912 core driver in Kconfig

The user has to select the I2C and SPI drivers individually and they select
the core driver for the device so there's no point in presenting the user
with an option for the core driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix off by one in WM831x IRQ code
Dimitris Papastamos [Tue, 21 Jun 2011 23:23:08 +0000 (00:23 +0100)]
mfd: Fix off by one in WM831x IRQ code

The GPIO IRQs aren't the first IRQs defined, we need to subtract the base
for the GPIOs as well to use them for array indexes.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Add tps65921 support from twl-core
Oleg Drokin [Fri, 1 Jul 2011 11:34:13 +0000 (13:34 +0200)]
mfd: Add tps65921 support from twl-core

Very similar to TPS65920
List of differences: http://www.ti.com/litv/pdf/swcu066b

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Add WM831x clock control register definitions
Mark Brown [Tue, 21 Jun 2011 10:12:23 +0000 (11:12 +0100)]
mfd: Add WM831x clock control register definitions

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Ensure value written by wm831x_set_bits() is within the mask
Mark Brown [Mon, 20 Jun 2011 11:25:58 +0000 (12:25 +0100)]
mfd: Ensure value written by wm831x_set_bits() is within the mask

Purely for defensiveness.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Implement tps65910 IRQ cleanup
Mark Brown [Mon, 20 Jun 2011 10:47:55 +0000 (11:47 +0100)]
mfd: Implement tps65910 IRQ cleanup

The tps65910_irq_exit() cleanup function was generating a warning from
sparse due to the lack of a prototype. This wasn't causing GCC warnings
as the driver wasn't cleaning up its IRQs on exit at all so there was no
use of an unprototyped function.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Add tunnelcreek watchdog to lpc_sch devices
Alexander Stein [Thu, 16 Jun 2011 11:05:49 +0000 (13:05 +0200)]
mfd: Add tunnelcreek watchdog to lpc_sch devices

Tunnel Creek has an additional watchdog core.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Clean-up ab8500 register file
Linus Walleij [Thu, 9 Jun 2011 21:57:57 +0000 (23:57 +0200)]
mfd: Clean-up ab8500 register file

This adds a previously undefined test register and removed a
number of double-defined accessory detect registers (they are
already defined higher up in the file.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Update ab8500 subdevice list
Linus Walleij [Thu, 9 Jun 2011 21:57:45 +0000 (23:57 +0200)]
mfd: Update ab8500 subdevice list

This synchronize the subdevice entries for the AB8500 MFD driver
with the latest development of subdrivers for things like battery
charging and temperature monitoring.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: ab8500-core MFD devices marked as initdata
Robert Rosengren [Thu, 9 Jun 2011 21:57:33 +0000 (23:57 +0200)]
mfd: ab8500-core MFD devices marked as initdata

Internal MFD device structs are marked as __devinitdata since the kernel
will allocate memory for the same when calling mfd_add_devices.

Signed-off-by: Robert Rosengren <robert.rosengren@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Reviewed-by: Johan Palsson <johan.palsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agotps65912: add regulator driver
Margarita Olaya [Thu, 9 Jun 2011 19:50:27 +0000 (14:50 -0500)]
tps65912: add regulator driver

The tps65912 consist of 4 DCDCs and 10 LDOs. The output voltages can be
configured by the SPI or I2C interface, they are meant to supply power
to the main processor and other components.

Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agotps65912: gpio: add gpio driver
Margarita Olaya [Thu, 9 Jun 2011 19:50:19 +0000 (14:50 -0500)]
tps65912: gpio: add gpio driver

TPS65912 has five GPIOs that can be configured for different
purposes.

Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agotps65912: irq: add interrupt controller
Margarita Olaya [Thu, 9 Jun 2011 19:50:13 +0000 (14:50 -0500)]
tps65912: irq: add interrupt controller

This module controls the interrupt handling for the tps65912.
The interrupt sources can be the following:

- GPIO
- PWRON signal
- PWRHOLD signal
- Temperature detection

Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: tps65912: Add new mfd device
Margarita Olaya [Thu, 9 Jun 2011 19:50:00 +0000 (14:50 -0500)]
mfd: tps65912: Add new mfd device

The tps65912 chip is a power management IC. It contains the following
components:

- Regulators
- GPIO controller

The core driver is registered as a platform driver, it provides communication
through I2C and SPI interfaces.

Signed-off-by: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Use kstrtoul_from_user in ab8500
Peter Huewe [Mon, 6 Jun 2011 20:43:32 +0000 (22:43 +0200)]
mfd: Use kstrtoul_from_user in ab8500

This patch replaces the code for getting an unsigned long from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Use kstrtoul_from_user in ab3550
Peter Huewe [Mon, 6 Jun 2011 20:43:31 +0000 (22:43 +0200)]
mfd: Use kstrtoul_from_user in ab3550

This patch replaces the code for getting an unsigned long from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Use generic irq chip for jz4740-adc
Lars-Peter Clausen [Fri, 3 Jun 2011 01:14:26 +0000 (03:14 +0200)]
mfd: Use generic irq chip for jz4740-adc

Use the generic irq chip framework for implementing the irq chip for
the jz4740-adc driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix error handling if BUG() isn't enabled in WM8994
Mark Brown [Fri, 17 Jun 2011 11:19:41 +0000 (12:19 +0100)]
mfd: Fix error handling if BUG() isn't enabled in WM8994

Even if we would've BUG()ed we should still tidy up after ourselves if that
isn't enabled in the kernel config.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix WM8994 IRQ register cache restore on resume
Mark Brown [Tue, 7 Jun 2011 10:49:42 +0000 (11:49 +0100)]
mfd: Fix WM8994 IRQ register cache restore on resume

When the byte swap was factored out into the per-register I/O functions
the register restore for the IRQ mask cache (which we use and store in
CPU native format for the interrupt handler) was not updated to do a byte
swap when it uses the bulk I/O. Fix this by writing the cache out one
register at a time.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Support multiple active WM831x AUXADC conversions
Mark Brown [Tue, 7 Jun 2011 10:47:28 +0000 (11:47 +0100)]
mfd: Support multiple active WM831x AUXADC conversions

The WM831x AUXADC hardware can schedule multiple conversions at once,
allowing higher performance when more than one source is in use as we
can have the hardware start new conversions without having to wait for
a register write.

Take advantage of this in the interrupt driven case, maintaining a list of
callers that are waiting for AUXADC conversions and completing them all
simultaneously. The external interface of the AUXADC is not changed so
there will be limited use of the feature immediately.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Restructure wm8994-core device revision handling
Mark Brown [Thu, 2 Jun 2011 18:18:55 +0000 (19:18 +0100)]
mfd: Restructure wm8994-core device revision handling

Switch on the device type before revision since anything we do here will
be device as well as revision specific.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Allocate wm835x irq descs dynamically
Sascha Hauer [Thu, 2 Jun 2011 18:18:54 +0000 (19:18 +0100)]
mfd: Allocate wm835x irq descs dynamically

This allows boards to leave the irq_base field unitialized and
prevents them having to reserve irqs in the platform.
pdata can be optional for irq support now. Without pdata the
driver allocates some free irq range. With pdata and irq_base > 0
the driver allocates exactly the specified irq.
Without pdata the irq defaults to IRQF_TRIGGER_LOW.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Refactor wm831x AUXADC handling into a separate file
Mark Brown [Thu, 2 Jun 2011 18:18:53 +0000 (19:18 +0100)]
mfd: Refactor wm831x AUXADC handling into a separate file

In preparation for some additional work on the wm831x AUXADC code move the
support into a separate file. This is a simple code motion patch, there
should be no functional changes.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Read wm831x AUXADC conversion results before acknowledging interrupt
Mark Brown [Thu, 2 Jun 2011 18:18:52 +0000 (19:18 +0100)]
mfd: Read wm831x AUXADC conversion results before acknowledging interrupt

Ensure that there's no possibility of loosing an AUXADC interrupt by reading
the conversion result in the IRQ handler when using interrupts. Otherwise
it's possible that under very heavy load a new conversion could be initiated
before the acknowledgement for a previous interrupt has happened.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Support dynamic allocation of IRQ range for wm831x
Mark Brown [Thu, 2 Jun 2011 18:18:51 +0000 (19:18 +0100)]
mfd: Support dynamic allocation of IRQ range for wm831x

Use irq_allocate_desc() to get the IRQ range, which turns into a noop on
non-sparse systems. Since all existing users are non-sparse there should
be no compatibility issues.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Only register wm831x RTC device if the 32.768kHz crystal is enabled
Mark Brown [Thu, 2 Jun 2011 18:18:50 +0000 (19:18 +0100)]
mfd: Only register wm831x RTC device if the 32.768kHz crystal is enabled

The RTC uses the 32.768kHz crystal so if it's not enabled (and it can only
be enabled via OTP or InstantConfig, not runtime software) the RTC can't
function.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Allow touchscreen to be disabled on wm831x devices
Mark Brown [Thu, 2 Jun 2011 18:18:49 +0000 (19:18 +0100)]
mfd: Allow touchscreen to be disabled on wm831x devices

Allow platform data to flag the touchscreen as disabled so that if the
touch driver is built in we don't end up causing lots of work by spuriously
detecting touchscreen activity on systems where it isn't in use.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Implement support for multiple WM831x devices
Mark Brown [Thu, 2 Jun 2011 18:18:48 +0000 (19:18 +0100)]
mfd: Implement support for multiple WM831x devices

Systems using this functionality will be uncommon.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agomfd: Fix bus lock interaction for WM831x IRQ set_type() operation
Mark Brown [Thu, 2 Jun 2011 18:18:47 +0000 (19:18 +0100)]
mfd: Fix bus lock interaction for WM831x IRQ set_type() operation

The WM831x IRQ set_type() operation is doing a direct register write when
called but since set_type() is called with the bus lock held this isn't
legal and could cause deadlocks in the IRQ core.

Fix this by posting the updates into an array and syncing in the
bus_sync_unlock() callback.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
13 years agocifs: remove unneeded variable initialization in cifs_reconnect_tcon
Jeff Layton [Thu, 28 Jul 2011 16:40:36 +0000 (12:40 -0400)]
cifs: remove unneeded variable initialization in cifs_reconnect_tcon

Reported-and-acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: simplify refcounting for oplock breaks
Jeff Layton [Tue, 26 Jul 2011 16:20:17 +0000 (12:20 -0400)]
cifs: simplify refcounting for oplock breaks

Currently, we take a sb->s_active reference and a cifsFileInfo reference
when an oplock break workqueue job is queued. This is unnecessary and
more complicated than it needs to be. Also as Al points out,
deactivate_super has non-trivial locking implications so it's best to
avoid that if we can.

Instead, just cancel any pending oplock breaks for this filehandle
synchronously in cifsFileInfo_put after taking it off the lists.
That should ensure that this job doesn't outlive the structures it
depends on.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: fix compiler warning in CIFSSMBQAllEAs
Jeff Layton [Thu, 28 Jul 2011 16:48:26 +0000 (12:48 -0400)]
cifs: fix compiler warning in CIFSSMBQAllEAs

The recent fix to the above function causes this compiler warning to pop
on some gcc versions:

  CC [M]  fs/cifs/cifssmb.o
fs/cifs/cifssmb.c: In function ‘CIFSSMBQAllEAs’:
fs/cifs/cifssmb.c:5708: warning: ‘ea_name_len’ may be used uninitialized in
this function

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: fix name parsing in CIFSSMBQAllEAs
Jeff Layton [Tue, 26 Jul 2011 22:23:47 +0000 (18:23 -0400)]
cifs: fix name parsing in CIFSSMBQAllEAs

The code that matches EA names in CIFSSMBQAllEAs is incorrect. It
uses strncmp to do the comparison with the length limited to the
name_len sent in the response.

Problem: Suppose we're looking for an attribute named "foobar" and
have an attribute before it in the EA list named "foo". The
comparison will succeed since we're only looking at the first 3
characters. Fix this by also comparing the length of the provided
ea_name with the name_len in the response. If they're not equal then
it shouldn't match.

Reported-by: Jian Li <jiali@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: don't start signing too early
Jeff Layton [Tue, 26 Jul 2011 16:21:17 +0000 (12:21 -0400)]
cifs: don't start signing too early

Sniffing traffic on the wire shows that windows clients send a zeroed
out signature field in a NEGOTIATE request, and send "BSRSPYL" in the
signature field during SESSION_SETUP. Make the cifs client behave the
same way.

It doesn't seem to make much difference in any server that I've tested
against, but it's probably best to follow windows behavior as closely as
possible here.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: trivial: goto out here is unnecessary
Jeff Layton [Tue, 26 Jul 2011 16:20:18 +0000 (12:20 -0400)]
cifs: trivial: goto out here is unnecessary

...and remove some obsolete comments.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: advertise the right receive buffer size to the server
Jeff Layton [Tue, 26 Jul 2011 16:20:18 +0000 (12:20 -0400)]
cifs: advertise the right receive buffer size to the server

Currently, we mirror the same size back to the server that it sends us.
That makes little sense. Instead we should be sending the server the
maximum buffer size that we can handle -- CIFSMaxBufSize minus the
4 byte RFC1001 header.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoMerge branch 'nfs-for-3.1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sun, 31 Jul 2011 16:26:50 +0000 (06:26 -1000)]
Merge branch 'nfs-for-3.1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

* 'nfs-for-3.1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (28 commits)
  pnfsblock: write_pagelist handle zero invalid extents
  pnfsblock: note written INVAL areas for layoutcommit
  pnfsblock: bl_write_pagelist
  pnfsblock: bl_read_pagelist
  pnfsblock: cleanup_layoutcommit
  pnfsblock: encode_layoutcommit
  pnfsblock: merge rw extents
  pnfsblock: add extent manipulation functions
  pnfsblock: bl_find_get_extent
  pnfsblock: xdr decode pnfs_block_layout4
  pnfsblock: call and parse getdevicelist
  pnfsblock: merge extents
  pnfsblock: lseg alloc and free
  pnfsblock: remove device operations
  pnfsblock: add device operations
  pnfsblock: basic extent code
  pnfsblock: use pageio_ops api
  pnfsblock: add blocklayout Kconfig option, Makefile, and stubs
  pnfs: cleanup_layoutcommit
  pnfs: ask for layout_blksize and save it in nfs_server
  ...