sfrench/cifs-2.6.git
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Linus Torvalds [Wed, 30 May 2012 18:17:19 +0000 (11:17 -0700)]
Merge git://git./linux/kernel/git/sage/ceph-client

Pull ceph updates from Sage Weil:
 "There are some updates and cleanups to the CRUSH placement code, a bug
  fix with incremental maps, several cleanups and fixes from Josh Durgin
  in the RBD block device code, a series of cleanups and bug fixes from
  Alex Elder in the messenger code, and some miscellaneous bounds
  checking and gfp cleanups/fixes."

Fix up trivial conflicts in net/ceph/{messenger.c,osdmap.c} due to the
networking people preferring "unsigned int" over just "unsigned".

* git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (45 commits)
  libceph: fix pg_temp updates
  libceph: avoid unregistering osd request when not registered
  ceph: add auth buf in prepare_write_connect()
  ceph: rename prepare_connect_authorizer()
  ceph: return pointer from prepare_connect_authorizer()
  ceph: use info returned by get_authorizer
  ceph: have get_authorizer methods return pointers
  ceph: ensure auth ops are defined before use
  ceph: messenger: reduce args to create_authorizer
  ceph: define ceph_auth_handshake type
  ceph: messenger: check return from get_authorizer
  ceph: messenger: rework prepare_connect_authorizer()
  ceph: messenger: check prepare_write_connect() result
  ceph: don't set WRITE_PENDING too early
  ceph: drop msgr argument from prepare_write_connect()
  ceph: messenger: send banner in process_connect()
  ceph: messenger: reset connection kvec caller
  libceph: don't reset kvec in prepare_write_banner()
  ceph: ignore preferred_osd field
  ceph: fully initialize new layout
  ...

7 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 30 May 2012 18:12:00 +0000 (11:12 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar.

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  perf ui browser: Stop using 'self'
  perf annotate browser: Read perf config file for settings
  perf config: Allow '_' in config file variable names
  perf annotate browser: Make feature toggles global
  perf annotate browser: The idx_asm field should be used in asm only view
  perf tools: Convert critical messages to ui__error()
  perf ui: Make --stdio default when TUI is not supported
  tools lib traceevent: Silence compiler warning on 32bit build
  perf record: Fix branch_stack type in perf_record_opts
  perf tools: Reconstruct event with modifiers from perf_event_attr
  perf top: Fix counter name fixup when fallbacking to cpu-clock
  perf tools: fix thread_map__new_by_pid_str() memory leak in error path
  perf tools: Do not use _FORTIFY_SOURCE when DEBUG=1 is specified
  tools lib traceevent: Fix signature of create_arg_item()
  tools lib traceevent: Use proper function parameter type
  tools lib traceevent: Fix freeing arg on process_dynamic_array()
  tools lib traceevent: Fix a possibly wrong memory dereference
  tools lib traceevent: Fix a possible memory leak
  tools lib traceevent: Allow expressions in __print_symbolic() fields
  perf evlist: Explicititely initialize input_name
  ...

7 years agoMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Wed, 30 May 2012 17:03:46 +0000 (10:03 -0700)]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging

Pull i2c updates from Jean Delvare.

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING
  i2c-dev: Add support for I2C_M_RECV_LEN

7 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Wed, 30 May 2012 16:59:13 +0000 (09:59 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull second set of watchdog updates from Wim Van Sebroeck:
 "This changeset contains following changes:
   * Add support for multiple watchdog devices.  We use dynamically
     allocated device id's for this.
   * Add locking into the generic watchdog infrastructure.
   * Add support for dynamically allocated watchdog_device structs so
     that we can deal with devices that get unbound.
   * convert following drivers to the generic watchdog framework:
     sch5627, sch5636 and sp805_wdt.
   * Add DA9052/53 PMIC watchdog support
   * Fix printk format warnings for iTCO_wdt.c"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: iTCO_wdt.c: fix printk format warnings
  watchdog: sp805_wdt: Add clk_{un}prepare support
  watchdog: sp805_wdt: convert to watchdog core
  hwmon/sch56xx: Depend on watchdog for watchdog core functions
  watchdog: sch56xx-common: set correct bits in register()
  Watchdog: DA9052/53 PMIC watchdog support
  watchdog: sch56xx-common: Add proper ref-counting of watchdog data
  watchdog: sch56xx: Remove unnecessary checks for register changes
  watchdog: sch56xx: Use watchdog core
  watchdog: Add support for dynamically allocated watchdog_device structs
  watchdog: Add Locking support
  watchdog: watchdog_dev: Rewrite wrapper code
  watchdog: use dev_ functions
  watchdog: create all the proper device files
  watchdog: Add a flag to indicate the watchdog doesn't reboot things
  watchdog: Add multiple device support
  watchdog: watchdog_core.h: make functions extern
  watchdog: correct the name of the watchdog_core inlude file
  watchdog: Add watchdog_active() routine
  watchdog: watchdog_dev: include private header to pickup global symbol prototypes

7 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Wed, 30 May 2012 16:55:53 +0000 (09:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Just regular fixes, bunch from intel, quieting some of the over
  zealous power warnings, and the rest just misc.

  I've got another pull with the remaining dma-buf bits, since the vmap
  bits are in your tree now.  I'll send tomorrow just to space things
  out a bit."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
  drm/edid/quirks: ViewSonic VA2026w
  drm/udl: remove unused variables.
  drm/radeon: fix XFX quirk
  drm: Use stdint types for consistency
  drm: Constify params to format_check() and framebuffer_checks()
  drm/radeon: fix typo in trinity tiling setup
  drm/udl: unlock before returning in udl_gem_mmap()
  radeon: make radeon_cs_update_pages static.
  drm/i915: tune down the noise of the RP irq limit fail
  drm/i915: Remove the error message for unbinding pinned buffers
  drm/i915: Limit page allocations to lowmem (dma32) for i965
  drm/i915: always use RPNSWREQ for turbo change requests
  drm/i915: reject doubleclocked cea modes on dp
  drm/i915: Adding TV Out Missing modes.
  drm/i915: wait for a vblank to pass after tv detect
  drm/i915: no lvds quirk for HP t5740e Thin Client
  drm/i915: enable vdd when switching off the eDP panel
  drm/i915: Fix PCH PLL assertions to not assume CRTC:PLL relationship
  drm/i915: Always update RPS interrupts thresholds along with frequency
  drm/i915: properly handle interlaced bit for sdvo dtd conversion
  ...

7 years agoMerge branch 'for-3.5/drivers' of git://git.kernel.dk/linux-block
Linus Torvalds [Wed, 30 May 2012 16:05:47 +0000 (09:05 -0700)]
Merge branch 'for-3.5/drivers' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
 "Here are the driver related changes for 3.5.  It contains:

   - The floppy changes from Jiri.  Jiri is now also marked as the
     maintainer of floppy.c, I shall be publically branding his forehead
     with red hot iron at the next opportune moment.

   - A batch of drbd updates and fixes from the linbit crew, as well as
     fixes from others.

   - Two small fixes for xen-blkfront courtesy of Jan."

* 'for-3.5/drivers' of git://git.kernel.dk/linux-block: (70 commits)
  floppy: take over maintainership
  floppy: remove floppy-specific O_EXCL handling
  floppy: convert to delayed work and single-thread wq
  xen-blkfront: module exit handling adjustments
  xen-blkfront: properly name all devices
  drbd: grammar fix in log message
  drbd: check MODULE for THIS_MODULE
  drbd: Restore the request restart logic
  drbd: introduce a bio_set to allocate housekeeping bios from
  drbd: remove unused define
  drbd: bm_page_async_io: properly initialize page->private
  drbd: use the newly introduced page pool for bitmap IO
  drbd: add page pool to be used for meta data IO
  drbd: allow bitmap to change during writeout from resync_finished
  drbd: fix race between drbdadm invalidate/verify and finishing resync
  drbd: fix resend/resubmit of frozen IO
  drbd: Ensure that data_size is not 0 before using data_size-1 as index
  drbd: Delay/reject other state changes while establishing a connection
  drbd: move put_ldev from __req_mod() to the endio callback
  drbd: fix WRITE_ACKED_BY_PEER_AND_SIS to not set RQ_NET_DONE
  ...

7 years agoMerge branch 'for-3.5/core' of git://git.kernel.dk/linux-block
Linus Torvalds [Wed, 30 May 2012 15:52:42 +0000 (08:52 -0700)]
Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block

Merge block/IO core bits from Jens Axboe:
 "This is a bit bigger on the core side than usual, but that is purely
  because we decided to hold off on parts of Tejun's submission on 3.4
  to give it a bit more time to simmer.  As a consequence, it's seen a
  long cycle in for-next.

  It contains:

   - Bug fix from Dan, wrong locking type.
   - Relax splice gifting restriction from Eric.
   - A ton of updates from Tejun, primarily for blkcg.  This improves
     the code a lot, making the API nicer and cleaner, and also includes
     fixes for how we handle and tie policies and re-activate on
     switches.  The changes also include generic bug fixes.
   - A simple fix from Vivek, along with a fix for doing proper delayed
     allocation of the blkcg stats."

Fix up annoying conflict just due to different merge resolution in
Documentation/feature-removal-schedule.txt

* 'for-3.5/core' of git://git.kernel.dk/linux-block: (92 commits)
  blkcg: tg_stats_alloc_lock is an irq lock
  vmsplice: relax alignement requirements for SPLICE_F_GIFT
  blkcg: use radix tree to index blkgs from blkcg
  blkcg: fix blkcg->css ref leak in __blkg_lookup_create()
  block: fix elvpriv allocation failure handling
  block: collapse blk_alloc_request() into get_request()
  blkcg: collapse blkcg_policy_ops into blkcg_policy
  blkcg: embed struct blkg_policy_data in policy specific data
  blkcg: mass rename of blkcg API
  blkcg: style cleanups for blk-cgroup.h
  blkcg: remove blkio_group->path[]
  blkcg: blkg_rwstat_read() was missing inline
  blkcg: shoot down blkgs if all policies are deactivated
  blkcg: drop stuff unused after per-queue policy activation update
  blkcg: implement per-queue policy activation
  blkcg: add request_queue->root_blkg
  blkcg: make request_queue bypassing on allocation
  blkcg: make sure blkg_lookup() returns %NULL if @q is bypassing
  blkcg: make blkg_conf_prep() take @pol and return with queue lock held
  blkcg: remove static policy ID enums
  ...

7 years agoMerge tag 'iommu-updates-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
Linus Torvalds [Wed, 30 May 2012 15:49:28 +0000 (08:49 -0700)]
Merge tag 'iommu-updates-v3.5' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:
 "Not much stuff this time.  The only change to the IOMMU core code is
  the addition of a handle to the fault handling code.  A few updates to
  the AMD IOMMU driver to work around new errata.  The other patches are
  mostly fixes and enhancements to the existing ARM IOMMU drivers and
  documentation updates.

  A new IOMMU driver for the Exynos platform was also underway but got
  merged via the Samsung tree and is not part of this tree."

* tag 'iommu-updates-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  Documentation: kernel-parameters.txt Add amd_iommu_dump
  iommu/core: pass a user-provided token to fault handlers
  iommu/tegra: gart: Fix register offset correctly
  iommu: OMAP: device detach on domain destroy
  iommu: tegra/gart: Add device tree support
  iommu: tegra/gart: use correct gart_device
  iommu/tegra: smmu: Print device name correctly
  iommu/amd: Add workaround for event log erratum
  iommu/amd: Check for the right TLP prefix bit
  dma-debug: release free_entries_lock before saving stack trace

7 years agomm: fix vma_resv_map() NULL pointer
Dave Hansen [Wed, 30 May 2012 14:51:07 +0000 (07:51 -0700)]
mm: fix vma_resv_map() NULL pointer

hugetlb_reserve_pages() can be used for either normal file-backed
hugetlbfs mappings, or MAP_HUGETLB.  In the MAP_HUGETLB, semi-anonymous
mode, there is not a VMA around.  The new call to resv_map_put() assumed
that there was, and resulted in a NULL pointer dereference:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000030
  IP: vma_resv_map+0x9/0x30
  PGD 141453067 PUD 1421e1067 PMD 0
  Oops: 0000 [#1] PREEMPT SMP
  ...
  Pid: 14006, comm: trinity-child6 Not tainted 3.4.0+ #36
  RIP: vma_resv_map+0x9/0x30
  ...
  Process trinity-child6 (pid: 14006, threadinfo ffff8801414e0000, task ffff8801414f26b0)
  Call Trace:
    resv_map_put+0xe/0x40
    hugetlb_reserve_pages+0xa6/0x1d0
    hugetlb_file_setup+0x102/0x2c0
    newseg+0x115/0x360
    ipcget+0x1ce/0x310
    sys_shmget+0x5a/0x60
    system_call_fastpath+0x16/0x1b

This was reported by Dave Jones, but was reproducible with the
libhugetlbfs test cases, so shame on me for not running them in the
first place.

With this, the oops is gone, and the output of libhugetlbfs's
run_tests.py is identical to plain 3.4 again.

[ Marked for stable, since this was introduced by commit c50ac050811d
  ("hugetlb: fix resv_map leak in error path") which was also marked for
  stable ]

Reported-by: Dave Jones <davej@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org> [2.6.32+]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branches 'iommu/fixes', 'dma-debug', 'arm/omap', 'arm/tegra', 'core' and 'x86...
Joerg Roedel [Wed, 30 May 2012 10:41:29 +0000 (12:41 +0200)]
Merge branches 'iommu/fixes', 'dma-debug', 'arm/omap', 'arm/tegra', 'core' and 'x86/amd' into next

7 years agoDocumentation: kernel-parameters.txt Add amd_iommu_dump
Shuah Khan [Thu, 24 May 2012 21:58:25 +0000 (15:58 -0600)]
Documentation: kernel-parameters.txt Add amd_iommu_dump

Add amd_iommu_dump to kernel-parameters.txt

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
7 years agoi2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING
Mark Brown [Wed, 30 May 2012 08:55:34 +0000 (10:55 +0200)]
i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING

Since there are uses for I2C_M_NOSTART which are much more sensible and
standard than most of the protocol mangling functionality (the main one
being gather writes to devices where something like a register address
needs to be inserted before a block of data) create a new I2C_FUNC_NOSTART
for this feature and update all the users to use it.

Also strengthen the disrecommendation of the protocol mangling while we're
at it.

In the case of regmap-i2c we remove the requirement for mangling as
I2C_M_NOSTART is the only mangling feature which is being used.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
7 years agoi2c-dev: Add support for I2C_M_RECV_LEN
Jean Delvare [Wed, 30 May 2012 08:55:34 +0000 (10:55 +0200)]
i2c-dev: Add support for I2C_M_RECV_LEN

As the bus driver side implementation of I2C_M_RECV_LEN is heavily
tied to SMBus, we can't support received length over 32 bytes, but
let's at least support that.

In practice, the caller will have to setup a buffer large enough to
cover the case where received length byte has value 32, so minimum
32 + 1 = 33 bytes, possibly more if there is a fixed number of bytes
added for the specific slave (for example a checksum.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Douglas Gilbert <dgilbert@interlog.com>
7 years agoMerge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Wed, 30 May 2012 07:02:00 +0000 (09:02 +0200)]
Merge tag 'perf-core-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Annotation fixes/improvements from Arnaldo Carvalho de Melo:

. Make the annotatation toggles (hide_src_code, jump_arrows, use_offset, etc)
  global so that navigation doesn't resets them on new annotations.

. Introduce an '[annotate]' config file section to allow permanent changes
  to the annotate browser defaults.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Wed, 30 May 2012 06:59:31 +0000 (08:59 +0200)]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Fixes for perf/urgent from Arnaldo Carvalho de Melo:

 * Fix fallback to --stdio when TUI not supported, from Namhyung Kim.

 * Use right cast for pointers/long in libtraceevent, from Namhyung Kim.

 * Be consistent on using the right error reporting interface for fatal errors,
   from Namhyung Kim.

 * Fix fallback to --stdio when TUI not supported, from Namhyung Kim.

 * Use the right index in asm only view in the annotate browser.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agowatchdog: iTCO_wdt.c: fix printk format warnings
Randy Dunlap [Mon, 14 May 2012 20:15:20 +0000 (13:15 -0700)]
watchdog: iTCO_wdt.c: fix printk format warnings

Fix printk format warnings:

drivers/watchdog/iTCO_wdt.c:577:3: warning: format '%04llx' expects type 'long long unsigned int', but argument 2 has type 'resource_size_t'
drivers/watchdog/iTCO_wdt.c:594:3: warning: format '%04llx' expects type 'long long unsigned int', but argument 2 has type 'resource_size_t'
drivers/watchdog/iTCO_wdt.c:600:2: warning: format '%04llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: sp805_wdt: Add clk_{un}prepare support
Viresh Kumar [Mon, 12 Mar 2012 04:22:17 +0000 (09:52 +0530)]
watchdog: sp805_wdt: Add clk_{un}prepare support

clk_{un}prepare() routines are required for required on some platforms to run
part of clk enable/disable() routines from contexts that can schedule.

This patch adds support for these routines in sp805 driver.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: sp805_wdt: convert to watchdog core
Viresh Kumar [Mon, 12 Mar 2012 04:22:16 +0000 (09:52 +0530)]
watchdog: sp805_wdt: convert to watchdog core

This patch converts existing sp805 watchdog driver to use already in place
common infrastructure present in watchdog core. With this lot of code goes away.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agohwmon/sch56xx: Depend on watchdog for watchdog core functions
Hans de Goede [Thu, 24 May 2012 20:18:58 +0000 (22:18 +0200)]
hwmon/sch56xx: Depend on watchdog for watchdog core functions

Since the watchdog code in sch56xx-common now uses the watchdog core, the
Kconfig entires for the sch5627 and sch5636 should depend on WATCHDOG
being set. Also select the watchdog core when we select one of the drivers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: sch56xx-common: set correct bits in register()
Dan Carpenter [Thu, 24 May 2012 15:58:02 +0000 (18:58 +0300)]
watchdog: sch56xx-common: set correct bits in register()

WDOG_NO_WAY_OUT (3) and WDOG_ACTIVE (0) are the bit numbers, not a mask.
So "data->wddev.status |= WDOG_ACTIVE;" was intended to set bit zero but
it is a no-op.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agoWatchdog: DA9052/53 PMIC watchdog support
Ashish Jangam [Thu, 24 May 2012 13:01:14 +0000 (18:31 +0530)]
Watchdog: DA9052/53 PMIC watchdog support

This driver adds support for the watchdog functionality provided by
the Dialog Semiconductor DA9052 PMIC chip.

Tested on samsung smdkv6410 and i.mx53 QS boards.

Signed-off-by: Anthony Olech <Anthony.Olech@diasemi.com>
Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: sch56xx-common: Add proper ref-counting of watchdog data
Hans de Goede [Tue, 22 May 2012 09:40:27 +0000 (11:40 +0200)]
watchdog: sch56xx-common: Add proper ref-counting of watchdog data

This fixes referencing free-ed memory in the corner case where /dev/watchdog
is open when the platform driver gets unbound from the platform device.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: sch56xx: Remove unnecessary checks for register changes
Hans de Goede [Tue, 22 May 2012 09:40:25 +0000 (11:40 +0200)]
watchdog: sch56xx: Remove unnecessary checks for register changes

Since the watchdog core keeps track of the watchdog's active state, start/stop
will never get called when no changes are necessary. So we can remove the
check for the output_enable register changing before writing it (which is
an expensive operation).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: sch56xx: Use watchdog core
Hans de Goede [Tue, 22 May 2012 09:40:24 +0000 (11:40 +0200)]
watchdog: sch56xx: Use watchdog core

Convert sch56xx drivers to the generic watchdog core.

Note this patch depends on the "watchdog: Add multiple device support" patch
from Alan Cox.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: Add support for dynamically allocated watchdog_device structs
Hans de Goede [Tue, 22 May 2012 09:40:26 +0000 (11:40 +0200)]
watchdog: Add support for dynamically allocated watchdog_device structs

If a driver's watchdog_device struct is part of a dynamically allocated
struct (which it often will be), merely locking the module is not enough,
even with a drivers module locked, the driver can be unbound from the device,
examples:
1) The root user can unbind it through sysfd
2) The i2c bus master driver being unloaded for an i2c watchdog

I will gladly admit that these are corner cases, but we still need to handle
them correctly.

The fix for this consists of 2 parts:
1) Add ref / unref operations, so that the driver can refcount the struct
   holding the watchdog_device struct and delay freeing it until any
   open filehandles referring to it are closed
2) Most driver operations will do IO on the device and the driver should not
   do any IO on the device after it has been unbound. Rather then letting each
   driver deal with this internally, it is better to ensure at the watchdog
   core level that no operations (other then unref) will get called after
   the driver has called watchdog_unregister_device(). This actually is the
   bulk of this patch.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: Add Locking support
Hans de Goede [Tue, 22 May 2012 09:40:26 +0000 (11:40 +0200)]
watchdog: Add Locking support

This patch fixes some potential multithreading issues, despite only
allowing one process to open the /dev/watchdog device, we can still get
called multiple times at the same time, since a program could be using thread,
or could share the fd after a fork.

This causes 2 potential problems:
1) watchdog_start / open do an unlocked test_n_set / test_n_clear,
   if these 2 race, the watchdog could be stopped while the active
   bit indicates it is running or visa versa.

2) Most watchdog_dev drivers probably assume that only one
   watchdog-op will get called at a time, this is not necessary
   true atm.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: watchdog_dev: Rewrite wrapper code
Hans de Goede [Tue, 22 May 2012 09:40:26 +0000 (11:40 +0200)]
watchdog: watchdog_dev: Rewrite wrapper code

Rewrite and extend the wrapper code so that we can easily introduce
locking (this to be able to prevent potential multithreading issues).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: use dev_ functions
Alan Cox [Fri, 11 May 2012 10:00:22 +0000 (12:00 +0200)]
watchdog: use dev_ functions

While they are registered all our watchdogs now have a valid device object
so we can in turn use that to report problems nicely.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: create all the proper device files
Alan Cox [Fri, 11 May 2012 10:00:20 +0000 (12:00 +0200)]
watchdog: create all the proper device files

Create the watchdog class and it's associated devices.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: Add a flag to indicate the watchdog doesn't reboot things
Alan Cox [Fri, 11 May 2012 10:00:19 +0000 (12:00 +0200)]
watchdog: Add a flag to indicate the watchdog doesn't reboot things

Some watchdogs merely trigger external alarms and controls. In a managed
environment this is very useful but we want drivers to be able to figure
out which is which now multiple dogs can be loaded. Thus add an ALARMONLY
feature flag.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: Add multiple device support
Alan Cox [Thu, 10 May 2012 19:48:59 +0000 (21:48 +0200)]
watchdog: Add multiple device support

We keep the old /dev/watchdog interface file for the first watchdog via
miscdev. This is basically a cut and paste of the relevant interface code
from the rtc driver layer tweaked for watchdog.

Revised to fix problems noted by Hans de Goede

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: watchdog_core.h: make functions extern
Wim Van Sebroeck [Mon, 21 May 2012 13:33:05 +0000 (15:33 +0200)]
watchdog: watchdog_core.h: make functions extern

Make the functions in watchdog_core.h extern like it should.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: correct the name of the watchdog_core inlude file
Wim Van Sebroeck [Mon, 21 May 2012 13:31:06 +0000 (15:31 +0200)]
watchdog: correct the name of the watchdog_core inlude file

The watchdog_core include file should have been named
watchdog_core.h and not watchdog_dev.h . Correct this.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: Add watchdog_active() routine
Viresh Kumar [Mon, 12 Mar 2012 04:21:56 +0000 (09:51 +0530)]
watchdog: Add watchdog_active() routine

Some watchdog may need to check if watchdog is ACTIVE or not, for example in
their suspend/resume hooks.

This patch adds this routine and changes the core drivers to use it.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agowatchdog: watchdog_dev: include private header to pickup global symbol prototypes
H Hartley Sweeten [Fri, 20 Apr 2012 20:28:24 +0000 (13:28 -0700)]
watchdog: watchdog_dev: include private header to pickup global symbol prototypes

Include the private watchdog_dev.h header to pickup the prototypes for the
watchdog_dev_register/unregister functions.

This quiets the following sparse warnings:

warning: symbol 'watchdog_dev_register' was not declared. Should it be static?
warning: symbol 'watchdog_dev_unregister' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
7 years agoMerge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 30 May 2012 03:14:53 +0000 (20:14 -0700)]
Merge branch 'x86-trampoline-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 trampoline rework from H. Peter Anvin:
 "This code reworks all the "trampoline"/"realmode" code (various bits
  that need to live in the first megabyte of memory, most but not all of
  which runs in real mode at some point) in the kernel into a single
  object.  The main reason for doing this is that it eliminates the last
  place in the kernel where we needed pages to be mapped RWX.  This code
  separates all that code into proper R/RW/RX pages."

Fix up conflicts in arch/x86/kernel/Makefile (mca removed next to reboot
code), and arch/x86/kernel/reboot.c (reboot code moved around in one
branch, modified in this one), and arch/x86/tools/relocs.c (mostly same
code came in earlier due to working around the ld bugs just before the
3.4 release).

Also remove stale x86-relocs entry from scripts/.gitignore as per Peter
Anvin.

* commit '61f5446169046c217a5479517edac3a890c3bee7': (36 commits)
  x86, realmode: Move end signature into header.S
  x86, relocs: When printing an error, say relative or absolute
  x86, relocs: More relocations which may end up as absolute
  x86, relocs: Workaround for binutils 2.22.52.0.1 section bug
  xen-acpi-processor: Add missing #include <xen/xen.h>
  acpi, bgrd: Add missing <linux/io.h> to drivers/acpi/bgrt.c
  x86, realmode: Change EFER to a single u64 field
  x86, realmode: Move kernel/realmode.c to realmode/init.c
  x86, realmode: Move not-common bits out of trampoline_common.S
  x86, realmode: Mask out EFER.LMA when saving trampoline EFER
  x86, realmode: Fix no cache bits test in reboot_32.S
  x86, realmode: Make sure all generated files are listed in targets
  x86, realmode: build fix: remove duplicate build
  x86, realmode: read cr4 and EFER from kernel for 64-bit trampoline
  x86, realmode: fixes compilation issue in tboot.c
  x86, realmode: move relocs from scripts/ to arch/x86/tools
  x86, realmode: header for trampoline code
  x86, realmode: flattened rm hierachy
  x86, realmode: don't copy real_mode_header
  x86, realmode: fix 64-bit wakeup sequence
  ...

7 years agoperf ui browser: Stop using 'self'
Arnaldo Carvalho de Melo [Wed, 30 May 2012 01:42:18 +0000 (22:42 -0300)]
perf ui browser: Stop using 'self'

Stop using this python/OOP convention, doesn't really helps. Will do
more from time to time till we get it cleaned up in all of /perf.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-5dyxyb8o0gf4yndk27kafbd1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Linus Torvalds [Wed, 30 May 2012 01:32:37 +0000 (18:32 -0700)]
Merge git://git./linux/kernel/git/mchehab/linux-edac

Pull EDAC internal API changes from Mauro Carvalho Chehab:
 "This changeset is the first part of a series of patches that fixes the
  EDAC sybsystem.  On this set, it changes the Kernel EDAC API in order
  to properly represent the Intel i3/i5/i7, Xeon 3xxx/5xxx/7xxx, and
  Intel E5-xxxx memory controllers.

  The EDAC core used to assume that:

       - the DRAM chip select pin is directly accessed by the memory
         controller

       - when multiple channels are used, they're all filled with the
         same type of memory.

  None of the above premises is true on Intel memory controllers since
  2002, when RAMBUS and FB-DIMMs were introduced, and Advanced Memory
  Buffer or by some similar technologies hides the direct access to the
  DRAM pins.

  So, the existing drivers for those chipsets had to lie to the EDAC
  core, in general telling that just one channel is filled.  That
  produces some hard to understand error messages like:

       EDAC MC0: CE row 3, channel 0, label "DIMM1": 1 Unknown error(s): memory read error on FATAL area : cpu=0 Err=0008:00c2 (ch=2), addr = 0xad1f73480 => socket=0, Channel=0(mask=2), rank=1

  The location information there (row3 channel 0) is completely bogus:
  it has no physical meaning, and are just some random values that the
  driver uses to talk with the EDAC core.  The error actually happened
  at CPU socket 0, channel 0, slot 1, but this is not reported anywhere,
  as the EDAC core doesn't know anything about the memory layout.  So,
  only advanced users that know how the EDAC driver works and that tests
  their systems to see how DIMMs are mapped can actually benefit for
  such error logs.

  This patch series fixes the error report logic, in order to allow the
  EDAC to expose the memory architecture used by them to the EDAC core.
  So, as the EDAC core now understands how the memory is organized, it
  can provide an useful report:

       EDAC MC0: CE memory read error on DIMM1 (channel:0 slot:1 page:0x364b1b offset:0x600 grain:32 syndrome:0x0 - count:1 area:DRAM err_code:0001:0090 socket:0 channel_mask:1 rank:4)

  The location of the DIMM where the error happened is reported by "MC0"
  (cpu socket #0), at "channel:0 slot:1" location, and matches the
  physical location of the DIMM.

  There are two remaining issues not covered by this patch series:

       - The EDAC sysfs API will still report bogus values.  So,
         userspace tools like edac-utils will still use the bogus data;

       - Add a new tracepoint-based way to get the binary information
         about the errors.

  Those are on a second series of patches (also at -next), but will
  probably miss the train for 3.5, due to the slow review process."

Fix up trivial conflict (due to spelling correction of removed code) in
drivers/edac/edac_device.c

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (42 commits)
  i7core: fix ranks information at the per-channel struct
  i5000: Fix the fatal error handling
  i5100_edac: Fix a warning when compiled with 32 bits
  i82975x_edac: Test nr_pages earlier to save a few CPU cycles
  e752x_edac: provide more info about how DIMMS/ranks are mapped
  i5000_edac: Fix the logic that retrieves memory information
  i5400_edac: improve debug messages to better represent the filled memory
  edac: Cleanup the logs for i7core and sb edac drivers
  edac: Initialize the dimm label with the known information
  edac: Remove the legacy EDAC ABI
  x38_edac: convert driver to use the new edac ABI
  tile_edac: convert driver to use the new edac ABI
  sb_edac: convert driver to use the new edac ABI
  r82600_edac: convert driver to use the new edac ABI
  ppc4xx_edac: convert driver to use the new edac ABI
  pasemi_edac: convert driver to use the new edac ABI
  mv64x60_edac: convert driver to use the new edac ABI
  mpc85xx_edac: convert driver to use the new edac ABI
  i82975x_edac: convert driver to use the new edac ABI
  i82875p_edac: convert driver to use the new edac ABI
  ...

7 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Wed, 30 May 2012 01:27:19 +0000 (18:27 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "The whole series has been sitting in -next for quite a while with no
  complaints.  The last change to the series was before the weekend the
  removal of an SPI patch which Grant - even though previously acked by
  himself - appeared to raise objections.  So I removed it until the
  situation is clarified.  Other than that all the patches have the acks
  from their respective maintainers, all MIPS and x86 defconfigs are
  building fine and I'm not aware of any problems introduced by this
  series.

  Among the key features for this patch series is a sizable patchset for
  Lantiq which among other things introduces support for Lantiq's
  flagship product, the FALCON SOC.  It also means that the opensource
  developers behind this patchset have overtaken Lantiq's competing
  inhouse development team that was working behind closed doors.

  Less noteworthy the ath79 patchset which adds support for a few more
  chip variants, cleanups and fixes.  Finally the usual dose of tweaking
  of generic code."

Fix up trivial conflicts in arch/mips/lantiq/xway/gpio_{ebu,stp}.c where
printk spelling fixes clashed with file move and eventual removal of the
printk.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (81 commits)
  MIPS: lantiq: remove orphaned code
  MIPS: Remove all -Wall and almost all -Werror usage from arch/mips.
  MIPS: lantiq: implement support for FALCON soc
  MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc
  MTD: MIPS: lantiq: implement OF support
  watchdog: MIPS: lantiq: implement OF support and minor fixes
  SERIAL: MIPS: lantiq: implement OF support
  GPIO: MIPS: lantiq: convert gpio-stp-xway to OF
  GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio
  GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder
  MIPS: pci: convert lantiq driver to OF
  MIPS: lantiq: convert dma to platform driver
  MIPS: lantiq: implement support for clkdev api
  MIPS: lantiq: drop ltq_gpio_request() and gpio_to_irq()
  OF: MIPS: lantiq: implement irq_domain support
  OF: MIPS: lantiq: implement OF support
  MIPS: lantiq: drop mips_machine support
  OF: PCI: const usage needed by MIPS
  MIPS: Cavium: Remove smp_reserve_lock.
  MIPS: Move cache setup to setup_arch().
  ...

7 years agoMerge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Wed, 30 May 2012 01:21:44 +0000 (18:21 -0700)]
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

Pull arm updates from Russell King:
 "This contains both some fixes found when trying to get the
  Assabet+neponset setup as a replacement firewall with a 3c589 PCMCIA
  card, and a bunch of changes from Al to fix up the ARM signal
  handling, particularly some of the restart behaviour."

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: neponset: make sure neponset_ncr_frob() is exported
  ARM: fix out[bwl]()
  arm: don't open-code ptrace_report_syscall()
  arm: bury unused _TIF_RESTORE_SIGMASK
  arm: remove unused restart trampoline
  arm: new way of handling ERESTART_RESTARTBLOCK
  arm: if we get into work_pending while returning to kernel mode, just go away
  arm: don't call try_to_freeze() from do_signal()
  arm: if there's no handler we need to restore sigmask, syscall or no syscall
  arm: trim _TIF_WORK_MASK, get rid of useless test and branch...
  arm: missing checks of __get_user()/__put_user() return values

7 years agoperf annotate browser: Read perf config file for settings
Arnaldo Carvalho de Melo [Wed, 30 May 2012 01:06:30 +0000 (22:06 -0300)]
perf annotate browser: Read perf config file for settings

The defaults are:

[annotate]

hide_src_code = false
use_offset = true
jump_arrows = true
show_nr_jumps = false

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-q4egci70rjgxh7bogbbfpcyf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoMerge branch 'akpm' (Andrew's patch-bomb)
Linus Torvalds [Wed, 30 May 2012 01:05:31 +0000 (18:05 -0700)]
Merge branch 'akpm' (Andrew's patch-bomb)

Merge patches through Andrew Morton:
 "180 patches - err 181 - listed below:

   - most of MM.  I held back the (large) "memcg: add hugetlb extension"
     series because a bunfight has recently broken out.

   - leds.  After this, Bryan Wu will be handling drivers/leds/

   - backlight

   - lib/

   - rtc"

* emailed from Andrew Morton <akpm@linux-foundation.org>: (181 patches)
  drivers/rtc/rtc-s3c.c: fix compiler warning
  drivers/rtc/rtc-tegra.c: clean up probe/remove routines
  drivers/rtc/rtc-pl031.c: remove RTC timer interrupt handling
  drivers/rtc/rtc-lpc32xx.c: add device tree support
  drivers/rtc/rtc-m41t93.c: don't let get_time() reset M41T93_FLAG_OF
  rtc: ds1307: add trickle charger support
  rtc: ds1307: remove superfluous initialization
  rtc: rename CONFIG_RTC_MXC to CONFIG_RTC_DRV_MXC
  drivers/rtc/Kconfig: place RTC_DRV_IMXDI and RTC_MXC under "on-CPU RTC drivers"
  drivers/rtc/rtc-pcf8563.c: add RTC_VL_READ/RTC_VL_CLR ioctl feature
  rtc: add ioctl to get/clear battery low voltage status
  drivers/rtc/rtc-ep93xx.c: convert to use module_platform_driver()
  rtc/spear: add Device Tree probing capability
  lib/vsprintf.c: "%#o",0 becomes '0' instead of '00'
  radix-tree: fix preload vector size
  spinlock_debug: print kallsyms name for lock
  vsprintf: fix %ps on non symbols when using kallsyms
  lib/bitmap.c: fix documentation for scnprintf() functions
  lib/string_helpers.c: make arrays static
  lib/test-kstrtox.c: mark const init data with __initconst instead of __initdata
  ...

7 years agoperf config: Allow '_' in config file variable names
Arnaldo Carvalho de Melo [Wed, 30 May 2012 00:59:02 +0000 (21:59 -0300)]
perf config: Allow '_' in config file variable names

For annotate I want to be able to have variables that are the same as
the ones representing feature toggles.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-7rhhf6m0a72p2wja4tgv1itg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf annotate browser: Make feature toggles global
Arnaldo Carvalho de Melo [Wed, 30 May 2012 00:24:05 +0000 (21:24 -0300)]
perf annotate browser: Make feature toggles global

So that when navigating to another function from a call site or when
going to another annotation browser thru the main report/top browser the
options (hide source code, jump arrows, jumpy lines, etc) remains the
last ones selected.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-0h0tah1zj59p01581snjufne@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf annotate browser: The idx_asm field should be used in asm only view
Arnaldo Carvalho de Melo [Tue, 29 May 2012 23:49:14 +0000 (20:49 -0300)]
perf annotate browser: The idx_asm field should be used in asm only view

When hide_src_view is true we can't use browser_disasm_line->idx, that
takes into account also non asm lines, we must use browser_disasm_line->idx_asm
instead, otherwise we may end up with an index after the number of
entries, oops, fix it.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-o1szpyjh3z87yi0n6x0cr8uu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agodrivers/rtc/rtc-s3c.c: fix compiler warning
Sachin Kamat [Tue, 29 May 2012 22:07:40 +0000 (15:07 -0700)]
drivers/rtc/rtc-s3c.c: fix compiler warning

rtc-s3c.c:673:32: warning: `s3c_rtc_drv_data_array' defined but not used [-Wunused-variable]

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/rtc-tegra.c: clean up probe/remove routines
Hannu Heikkinen [Tue, 29 May 2012 22:07:40 +0000 (15:07 -0700)]
drivers/rtc/rtc-tegra.c: clean up probe/remove routines

Use the devres managed resource functions in the probe routine.  Also
affects the remove routine where the previously used free and release
functions are not needed.

The devm_* functions eliminate the need for manual resource releasing and
simplify error handling.  Resources allocated by devm_* are freed
automatically on driver detach.

Signed-off-by: Hannu Heikkinen <ext-hannu.m.heikkinen@nokia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/rtc-pl031.c: remove RTC timer interrupt handling
Rajkumar Kasirajan [Tue, 29 May 2012 22:07:40 +0000 (15:07 -0700)]
drivers/rtc/rtc-pl031.c: remove RTC timer interrupt handling

Remove RTT interrupt handling, since PIE mode interrupts are now better
emulated in generic code via an hrtimer we have no need for this, and
there is no codepath in the driver that enables these periodic interrupts
anyway.

Signed-off-by: Rajkumar Kasirajan <rajkumar.kasirajan@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/rtc-lpc32xx.c: add device tree support
Roland Stigge [Tue, 29 May 2012 22:07:39 +0000 (15:07 -0700)]
drivers/rtc/rtc-lpc32xx.c: add device tree support

Adds device tree support for rtc-lpc32xx.c

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/rtc-m41t93.c: don't let get_time() reset M41T93_FLAG_OF
Nikolaus Voss [Tue, 29 May 2012 22:07:39 +0000 (15:07 -0700)]
drivers/rtc/rtc-m41t93.c: don't let get_time() reset M41T93_FLAG_OF

If the rtc reports the time might be invalid due to oscillator failure,
M41T93_FLAG_OF flag must not be reset by get_time() as the read operation
doesn't make the time valid.

Without this patch, only the first get_time() reported an invalid time,
the second get_time() reported a valid time althought the reported time is
probably wrong due to oscillator failure.

Instead of resetting in get_time(), with this patch M41T93_FLAG_OF is
reset in set_time() when a valid time is to be written.

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agortc: ds1307: add trickle charger support
Wolfram Sang [Tue, 29 May 2012 22:07:38 +0000 (15:07 -0700)]
rtc: ds1307: add trickle charger support

Some DS13XX devices have "trickle chargers".  Its configuration register
is at different locations, the setup is the same, though.  Since the
configuration is board specific, introduce a platform_data to this driver.
Tested with a DS1339 on a custom board.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Alessandro Zummo <alessandro.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agortc: ds1307: remove superfluous initialization
Wolfram Sang [Tue, 29 May 2012 22:07:38 +0000 (15:07 -0700)]
rtc: ds1307: remove superfluous initialization

ds1307 was kzalloced, so no need to zero members of the struct.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agortc: rename CONFIG_RTC_MXC to CONFIG_RTC_DRV_MXC
Fabio Estevam [Tue, 29 May 2012 22:07:37 +0000 (15:07 -0700)]
rtc: rename CONFIG_RTC_MXC to CONFIG_RTC_DRV_MXC

In order to keep consistency with other rtc drivers,rename CONFIG_RTC_MXC
to CONFIG_RTC_DRV_MXC.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
[akpm@linux-foundation.org: fix missed arch/arm/configs/imx_v6_v7_defconfig]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/Kconfig: place RTC_DRV_IMXDI and RTC_MXC under "on-CPU RTC drivers"
Fabio Estevam [Tue, 29 May 2012 22:07:37 +0000 (15:07 -0700)]
drivers/rtc/Kconfig: place RTC_DRV_IMXDI and RTC_MXC under "on-CPU RTC drivers"

RTC_DRV_IMXDI and RTC_MXC are on-chip RTC modules, so move them under
"on-CPU RTC drivers" selection menu.

While at it change the dependency of RTC_DRV_IMXDI from ARCH_MX25 to
SOC_IMX25.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/rtc-pcf8563.c: add RTC_VL_READ/RTC_VL_CLR ioctl feature
Alexander Stein [Tue, 29 May 2012 22:07:36 +0000 (15:07 -0700)]
drivers/rtc/rtc-pcf8563.c: add RTC_VL_READ/RTC_VL_CLR ioctl feature

Changes are based on arch/cris/arch-v10/drivers/pcf8563.c

[akpm@linux-foundation.org: fix sparse warning]
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Mikael Starvik <starvik@axis.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agortc: add ioctl to get/clear battery low voltage status
Alexander Stein [Tue, 29 May 2012 22:07:36 +0000 (15:07 -0700)]
rtc: add ioctl to get/clear battery low voltage status

Currently there is no generic way to get the RTC battery status within an
application.  So add an ioctl to read the status bit.  The idea is that
the bit is set once a low voltage is detected.  It stays there until it is
reset using the RTC_VL_CLR ioctl.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/rtc/rtc-ep93xx.c: convert to use module_platform_driver()
H Hartley Sweeten [Tue, 29 May 2012 22:07:36 +0000 (15:07 -0700)]
drivers/rtc/rtc-ep93xx.c: convert to use module_platform_driver()

Use module_platform_driver() to remove the boilerplate code.

Also, change the probe and remove functions to __devinit/__devexit.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agortc/spear: add Device Tree probing capability
Viresh Kumar [Tue, 29 May 2012 22:07:35 +0000 (15:07 -0700)]
rtc/spear: add Device Tree probing capability

SPEAr platforms now support DT and so must convert all drivers support DT.
This patch adds DT probing support for rtc and updates its documentation
too.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Cc: Rob Herring <robherring2@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agolib/vsprintf.c: "%#o",0 becomes '0' instead of '00'
Pierre Carrier [Tue, 29 May 2012 22:07:35 +0000 (15:07 -0700)]
lib/vsprintf.c: "%#o",0 becomes '0' instead of '00'

number()'s behaviour is slighly changed: 0 becomes "0" instead of "00"
when using the flag SPECIAL and base 8.

Before:
Number\Format  %o    %#o  %x    %#x
            0     0   00    0   0x0
            1     1   01    1   0x1
           16    20  020   10  0x10

After:
Number\Format  %o    %#o  %x    %#x
            0     0    0    0   0x0
            1     1   01    1   0x1
           16    20  020   10  0x10

Signed-off-by: Pierre Carrier <pierre@spotify.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoradix-tree: fix preload vector size
Nick Piggin [Tue, 29 May 2012 22:07:34 +0000 (15:07 -0700)]
radix-tree: fix preload vector size

We are not preallocating a sufficient number of nodes.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agospinlock_debug: print kallsyms name for lock
Stephen Boyd [Tue, 29 May 2012 22:07:34 +0000 (15:07 -0700)]
spinlock_debug: print kallsyms name for lock

When a spinlock warning is printed we usually get

 BUG: spinlock bad magic on CPU#0, modprobe/111
  lock: 0xdff09f38, .magic: 00000000, .owner: /0, .owner_cpu: 0

but it's nicer to print the symbol for the lock if we have it so that we
can avoid 'grep dff09f38 /proc/kallsyms' to find out which lock it was.
Use kallsyms to print the symbol name so we get something a bit easier to
read

 BUG: spinlock bad magic on CPU#0, modprobe/112
  lock: test_lock, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0

If the lock is not in kallsyms %ps will fall back to printing the address
directly.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agovsprintf: fix %ps on non symbols when using kallsyms
Stephen Boyd [Tue, 29 May 2012 22:07:33 +0000 (15:07 -0700)]
vsprintf: fix %ps on non symbols when using kallsyms

Using %ps in a printk format will sometimes fail silently and print the
empty string if the address passed in does not match a symbol that
kallsyms knows about.  But using %pS will fall back to printing the full
address if kallsyms can't find the symbol.  Make %ps act the same as %pS
by falling back to printing the address.

While we're here also make %ps print the module that a symbol comes from
so that it matches what %pS already does.  Take this simple function for
example (in a module):

static void test_printk(void)
{
int test;
pr_info("with pS: %pS\n", &test);
pr_info("with ps: %ps\n", &test);
}

Before this patch:

 with pS: 0xdff7df44
 with ps:

After this patch:

 with pS: 0xdff7df44
 with ps: 0xdff7df44

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agolib/bitmap.c: fix documentation for scnprintf() functions
Andrew Morton [Tue, 29 May 2012 22:07:32 +0000 (15:07 -0700)]
lib/bitmap.c: fix documentation for scnprintf() functions

The code comments for bscnl_emit() and bitmap_scnlistprintf() are
describing snprintf() return semantics, but these functions use
scnprintf() return semantics.  Fix that, and document the
bitmap_scnprintf() return value as well.

Cc: Ryota Ozaki <ozaki.ryota@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agolib/string_helpers.c: make arrays static
Andrew Morton [Tue, 29 May 2012 22:07:32 +0000 (15:07 -0700)]
lib/string_helpers.c: make arrays static

Moving these arrays into static storage shrinks the kernel a bit:

   text    data     bss     dec     hex filename
    723     112      64     899     383 lib/string_helpers.o
    516     272      64     852     354 lib/string_helpers.o

Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agolib/test-kstrtox.c: mark const init data with __initconst instead of __initdata
Uwe Kleine-König [Tue, 29 May 2012 22:07:31 +0000 (15:07 -0700)]
lib/test-kstrtox.c: mark const init data with __initconst instead of __initdata

As long as there is no other non-const variable marked __initdata in the
same compilation unit it doesn't hurt.  If there were one however
compilation would fail with

error: $variablename causes a section type conflict

because a section containing const variables is marked read only and so
cannot contain non-const variables.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agolist_debug: WARN for adding something already in the list
Chris Metcalf [Tue, 29 May 2012 22:07:31 +0000 (15:07 -0700)]
list_debug: WARN for adding something already in the list

We were bitten by this at one point and added an additional sanity test
for DEBUG_LIST.  You can't validly add a list_head to a list where either
prev or next is the same as the thing you're adding.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: add LM3533 LED driver
Johan Hovold [Tue, 29 May 2012 22:07:31 +0000 (15:07 -0700)]
leds: add LM3533 LED driver

Add sub-driver for the LEDs on National Semiconductor / TI LM3533 lighting
power chips.

The chip provides 256 brightness levels, hardware accelerated blinking as
well as ambient-light-sensor and pwm input control.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Rob Landley <rob@landley.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/leds/leds-pca955x.c: fix race condition while setting brightness on several...
Alexander Stein [Tue, 29 May 2012 22:07:30 +0000 (15:07 -0700)]
drivers/leds/leds-pca955x.c: fix race condition while setting brightness on several LEDs

When issuing the following command:

  for I in 0 1 2 3 4 5 6 7; do
    echo 0 > /sys/class/leds/pca955x\:${I}/brightness;
  done

It is possible that all the pca955x_read_ls calls are done sequentially
before any pca955x_write_ls call is done.  This updates the LS only to
the last LED update in its set.

Fix this by using a global lock for the pca995x device during
pca955x_led_work.  Also used a struct for shared data betreen all LEDs.

[akpm@linux-foundation.org: revert unintentional rename of pca955x_ledsel()]
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: add new transient trigger for one shot timer activation
Shuah Khan [Tue, 29 May 2012 22:07:30 +0000 (15:07 -0700)]
leds: add new transient trigger for one shot timer activation

The leds timer trigger does not currently have an interface to activate a
one shot timer.  The current support allows for setting two timers, one
for specifying how long a state to be on, and the second for how long the
state to be off.  The delay_on value specifies the time period an LED
should stay in on state, followed by a delay_off value that specifies how
long the LED should stay in off state.  The on and off cycle repeats until
the trigger gets deactivated.  There is no provision for one time
activation to implement features that require an on or off state to be
held just once and then stay in the original state forever.

Without one shot timer interface, user space can still use timer trigger
to set a timer to hold a state, however when user space application
crashes or goes away without deactivating the timer, the hardware will be
left in that state permanently.

As a specific example of this use-case, let's look at vibrate feature on
phones.  Vibrate function on phones is implemented using PWM pins on SoC
or PMIC.  There is a need to activate one shot timer to control the
vibrate feature, to prevent user space crashes leaving the phone in
vibrate mode permanently causing the battery to drain.

This trigger exports three properties, activate, state, and duration When
transient trigger is activated these properties are set to default values.

- duration allows setting timer value in msecs. The initial value is 0.
- activate allows activating and deactivating the timer specified by
  duration as needed. The initial and default value is 0.  This will allow
  duration to be set after trigger activation.
- state allows user to specify a transient state to be held for the specified
  duration.

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: NeilBrown <neilb@suse.de>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: heartbeat: stop on shutdown
Alexander Holler [Tue, 29 May 2012 22:07:29 +0000 (15:07 -0700)]
leds: heartbeat: stop on shutdown

A halted kernel should not show a heartbeat.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Cc: Shuah Khan <shuahkhan@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/leds/leds-lm3530.c: simplify als configuration on initialization
Kim, Milo [Tue, 29 May 2012 22:07:29 +0000 (15:07 -0700)]
drivers/leds/leds-lm3530.c: simplify als configuration on initialization

For better code readability, ALS code is moved to new a function -
lm3530_als_configure()

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoinclude/linux/led-lm3530.h: comment correction about the range of brightness
Kim, Milo [Tue, 29 May 2012 22:07:28 +0000 (15:07 -0700)]
include/linux/led-lm3530.h: comment correction about the range of brightness

max brightness is 127, so the range of brt_val should be from 0 to 127

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: change ledtrig-timer to use activated flag
Shuah Khan [Tue, 29 May 2012 22:07:28 +0000 (15:07 -0700)]
leds: change ledtrig-timer to use activated flag

Change existing timer trigger to use the new ->activated flag to set
activate successful status in activate routine and check it in deactivate
routine to do cleanup.

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: change existing triggers to use activated flag
Shuah Khan [Tue, 29 May 2012 22:07:28 +0000 (15:07 -0700)]
leds: change existing triggers to use activated flag

Change existing triggers backlight, gpio, and heartbeat to use the new
->activated flag to set activate successful status in their activate
routines and check it in their deactivate routines to do cleanup.

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: add new field to led_classdev struct to save activation state
Shuah Khan [Tue, 29 May 2012 22:07:27 +0000 (15:07 -0700)]
leds: add new field to led_classdev struct to save activation state

Add a new field to led_classdev to save activattion state after activate
routine is successful.  This saved state is used in deactivate routine to
do cleanup such as removing device files, and free memory allocated during
activation.  Currently trigger_data not being null is used for this
purpose.

Existing triggers will need changes to use this new field.

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: Use kcalloc instead of kzalloc to allocate array
Thomas Meyer [Tue, 29 May 2012 22:07:27 +0000 (15:07 -0700)]
leds: Use kcalloc instead of kzalloc to allocate array

The advantage of kcalloc is that will prevent integer overflows which
could result from the multiplication of number of elements and size and it
is also a bit nicer to read.

The semantic patch that makes this change is available
in https://lkml.org/lkml/2011/11/25/107

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: simple_strtoul() cleanup
Shuah Khan [Tue, 29 May 2012 22:07:26 +0000 (15:07 -0700)]
leds: simple_strtoul() cleanup

led-class.c and ledtrig-timer.c still use simple_strtoul().  Change them
to use kstrtoul() instead of obsolete simple_strtoul().

Also fix the existing int ret declaration to be ssize_t to match the
return type for _store functions in ledtrig-timer.c.

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoleds: driver for DA9052/53 PMIC v2
David Dajun Chen [Tue, 29 May 2012 22:07:26 +0000 (15:07 -0700)]
leds: driver for DA9052/53 PMIC v2

LED Driver for Dialog Semiconductor DA9052/53 PMICs.

[akpm@linux-foundation.org: make led_reg static]
Signed-off-by: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/leds/leds-lp5521.c: fix lp5521_read() error handling
Dan Carpenter [Tue, 29 May 2012 22:07:26 +0000 (15:07 -0700)]
drivers/leds/leds-lp5521.c: fix lp5521_read() error handling

Gcc 4.6.2 complains that:

  drivers/leds/leds-lp5521.c: In function `lp5521_load_program':
  drivers/leds/leds-lp5521.c:214:21: warning: `mode' may be used uninitialized in this function [-Wuninitialized]
  drivers/leds/leds-lp5521.c: In function `lp5521_probe':
  drivers/leds/leds-lp5521.c:788:5: warning: `buf' may be used uninitialized in this function [-Wuninitialized]
  drivers/leds/leds-lp5521.c:740:6: warning: `ret' may be used uninitialized in this function [-Wuninitialized]

These are real problems if lp5521_read() returns an error.  When that
happens we should handle it, instead of ignoring it or doing a bitwise
OR with all the other error codes and continuing.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Milo <Milo.Kim@ti.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: tosa_lcd: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:25 +0000 (15:07 -0700)]
backlight: tosa_lcd: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: tosa_bl: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:25 +0000 (15:07 -0700)]
backlight: tosa_bl: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: tdo24m: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:24 +0000 (15:07 -0700)]
backlight: tdo24m: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: s6e63m0: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:24 +0000 (15:07 -0700)]
backlight: s6e63m0: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: InKi Dae <inki.dae@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: ltv350qv: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:24 +0000 (15:07 -0700)]
backlight: ltv350qv: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: lms283gf05: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:23 +0000 (15:07 -0700)]
backlight: lms283gf05: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: ld9040: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:23 +0000 (15:07 -0700)]
backlight: ld9040: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Donghwa Lee <dh09.lee@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: l4f00242t03: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:23 +0000 (15:07 -0700)]
backlight: l4f00242t03: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Alberto Panizzo <alberto@amarulasolutions.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: ili9320: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:22 +0000 (15:07 -0700)]
backlight: ili9320: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: corgi_lcd: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:22 +0000 (15:07 -0700)]
backlight: corgi_lcd: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: ams369fg06: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:21 +0000 (15:07 -0700)]
backlight: ams369fg06: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: adp8870: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:21 +0000 (15:07 -0700)]
backlight: adp8870: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: adp8860: use devm_ functions
Jingoo Han [Tue, 29 May 2012 22:07:21 +0000 (15:07 -0700)]
backlight: adp8860: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: initialize struct backlight_properties properly
Corentin Chary [Tue, 29 May 2012 22:07:20 +0000 (15:07 -0700)]
backlight: initialize struct backlight_properties properly

In all these files, the .power field was never correctly initialized.

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agodrivers/video/backlight/l4f00242t03.c: use pr_fmt
Jingoo Han [Tue, 29 May 2012 22:07:20 +0000 (15:07 -0700)]
drivers/video/backlight/l4f00242t03.c: use pr_fmt

This driver uses pr_debug(), so provide it with the appropriate prefixing.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Alberto Panizzo <alberto@amarulasolutions.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: progear: use pr_err() instead of printk()
Jingoo Han [Tue, 29 May 2012 22:07:19 +0000 (15:07 -0700)]
backlight: progear: use pr_err() instead of printk()

Use pr_err() instead of printk() to allow dynamic debugging.  The pr_fmt
prefix for pr_ macros is used.  Also fix checkpatch warnings as below:

WARNING: printk() should include KERN_ facility level

[akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Marcin Juszkiewicz <openembedded@haerwu.biz>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: omap1: use pr_info() instead of printk()
Jingoo Han [Tue, 29 May 2012 22:07:19 +0000 (15:07 -0700)]
backlight: omap1: use pr_info() instead of printk()

Use pr_info() instead of printk() to allow dynamic debugging.  The pr_fmt
prefix for pr_ macros is used.  Also fix checkpatch warning as below:

WARNING: Prefer pr_info(... to printk(KERN_INFO, ...

[akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: jornada720: use pr_err()/pr_info() instead of printk()
Jingoo Han [Tue, 29 May 2012 22:07:18 +0000 (15:07 -0700)]
backlight: jornada720: use pr_err()/pr_info() instead of printk()

Use pr_err()/pr_info() instead of printk() to allow dynamic debugging.
The pr_fmt prefix for pr_ macros is used.  Also fix checkpatch warnings as
below:

WARNING: Prefer pr_err(... to printk(KERN_ERR, ...
WARNING: Prefer pr_info(... to printk(KERN_INFO, ...

[akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: generic_bl: use pr_info() instead of printk()
Jingoo Han [Tue, 29 May 2012 22:07:18 +0000 (15:07 -0700)]
backlight: generic_bl: use pr_info() instead of printk()

Use pr_info() instead of printk() to allow dynamic debugging.  The pr_fmt
prefix for pr_ macros is used.  Also fix checkpatch warnings as below:

WARNING: printk() should include KERN_ facility level

[akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: cr_bllcd: use pr_err()/pr_info() instead of printk()
Jingoo Han [Tue, 29 May 2012 22:07:17 +0000 (15:07 -0700)]
backlight: cr_bllcd: use pr_err()/pr_info() instead of printk()

Use pr_err()/pr_info() instead of printk() to allow dynamic debugging.
The pr_fmt prefix for pr_ macros is used.  Also fix checkpatch warnings as
below:

WARNING: printk() should include KERN_ facility level
WARNING: Prefer pr_err(... to printk(KERN_ERR, ...

[akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobacklight: apple_bl: use pr_debug()/pr_err() instead of printk()
Jingoo Han [Tue, 29 May 2012 22:07:16 +0000 (15:07 -0700)]
backlight: apple_bl: use pr_debug()/pr_err() instead of printk()

Use pr_debug()/pr_err() instead of printk() to allow dynamic debugging.
The pr_fmt prefix for pr_ macros is used.  Also fix checkpatch warnings as
below:

WARNING: Prefer pr_debug(... to printk(KERN_DEBUG, ...
WARNING: Prefer pr_err(... to printk(KERN_ERR, ...

[akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe]
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>