GitHub/MotorolaMobilityLLC/kernel-slsi.git
11 years agodm cache: optimize commit_if_needed
Heinz Mauelshagen [Mon, 14 Oct 2013 15:24:43 +0000 (17:24 +0200)]
dm cache: optimize commit_if_needed

Check commit_requested flag _before_ calling
dm_cache_changed_this_transaction() superfluously.

Also, be sure to set last_commit_jiffies _after_ dm_cache_commit()
completes.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm space map disk: optimise sm_disk_dec_block
Joe Thornber [Fri, 9 Aug 2013 13:19:32 +0000 (14:19 +0100)]
dm space map disk: optimise sm_disk_dec_block

Don't waste time spotting blocks that have been allocated and then freed
in the same transaction.

The extra lookup is expensive, and I don't think it really gives us much.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agoMAINTAINERS: add reference to device-mapper's linux-dm.git tree
Mike Snitzer [Tue, 5 Nov 2013 00:42:38 +0000 (19:42 -0500)]
MAINTAINERS: add reference to device-mapper's linux-dm.git tree

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm: fix Kconfig menu indentation
Mikulas Patocka [Fri, 8 Nov 2013 15:47:12 +0000 (10:47 -0500)]
dm: fix Kconfig menu indentation

The option DM_LOG_USERSPACE is sub-option of DM_MIRROR, so place it
right after DM_MIRROR.  Doing so fixes various other Device mapper
targets/features to be properly nested under "Device mapper support".

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm: allow remove to be deferred
Mikulas Patocka [Fri, 1 Nov 2013 22:27:41 +0000 (18:27 -0400)]
dm: allow remove to be deferred

This patch allows the removal of an open device to be deferred until
it is closed.  (Previously such a removal attempt would fail.)

The deferred remove functionality is enabled by setting the flag
DM_DEFERRED_REMOVE in the ioctl structure on DM_DEV_REMOVE or
DM_REMOVE_ALL ioctl.

On return from DM_DEV_REMOVE, the flag DM_DEFERRED_REMOVE indicates if
the device was removed immediately or flagged to be removed on close -
if the flag is clear, the device was removed.

On return from DM_DEV_STATUS and other ioctls, the flag
DM_DEFERRED_REMOVE is set if the device is scheduled to be removed on
closure.

A device that is scheduled to be deleted can be revived using the
message "@cancel_deferred_remove". This message clears the
DMF_DEFERRED_REMOVE flag so that the device won't be deleted on close.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm table: print error on preresume failure
Mike Snitzer [Thu, 24 Oct 2013 18:10:29 +0000 (14:10 -0400)]
dm table: print error on preresume failure

If preresume fails it is worth logging an error given that a device is
left suspended due to the failure.

This change was motivated by local preresume error logging that was
added to the cache target ("preresume failed").  Elevating this
target-agnostic context for the where the target-specific error occurred
relative to the DM core's callouts makes sense.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
11 years agodm crypt: add TCW IV mode for old CBC TCRYPT containers
Milan Broz [Mon, 28 Oct 2013 22:21:04 +0000 (23:21 +0100)]
dm crypt: add TCW IV mode for old CBC TCRYPT containers

dm-crypt can already activate TCRYPT (TrueCrypt compatible) containers
in LRW or XTS block encryption mode.

TCRYPT containers prior to version 4.1 use CBC mode with some additional
tweaks, this patch adds support for these containers.

This new mode is implemented using special IV generator named TCW
(TrueCrypt IV with whitening).  TCW IV only supports containers that are
encrypted with one cipher (Tested with AES, Twofish, Serpent, CAST5 and
TripleDES).

While this mode is legacy and is known to be vulnerable to some
watermarking attacks (e.g. revealing of hidden disk existence) it can
still be useful to activate old containers without using 3rd party
software or for independent forensic analysis of such containers.

(Both the userspace and kernel code is an independent implementation
based on the format documentation and it completely avoids use of
original source code.)

The TCW IV generator uses two additional keys: Kw (whitening seed, size
is always 16 bytes - TCW_WHITENING_SIZE) and Kiv (IV seed, size is
always the IV size of the selected cipher).  These keys are concatenated
at the end of the main encryption key provided in mapping table.

While whitening is completely independent from IV, it is implemented
inside IV generator for simplification.

The whitening value is always 16 bytes long and is calculated per sector
from provided Kw as initial seed, xored with sector number and mixed
with CRC32 algorithm.  Resulting value is xored with ciphertext sector
content.

IV is calculated from the provided Kiv as initial IV seed and xored with
sector number.

Detailed calculation can be found in the Truecrypt documentation for
version < 4.1 and will also be described on dm-crypt site, see:
http://code.google.com/p/cryptsetup/wiki/DMCrypt

The experimental support for activation of these containers is already
present in git devel brach of cryptsetup.

Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm crypt: properly handle extra key string in initialization
Milan Broz [Mon, 28 Oct 2013 22:21:03 +0000 (23:21 +0100)]
dm crypt: properly handle extra key string in initialization

Some encryption modes use extra keys (e.g. loopAES has IV seed) which
are not used in block cipher initialization but are part of key string
in table constructor.

This patch adds an additional field which describes the length of the
extra key(s) and substracts it before real key encryption setting.

The key_size always includes the size, in bytes, of the key provided
in mapping table.

The key_parts describes how many parts (usually keys) are contained in
the whole key buffer.  And key_extra_size contains size in bytes of
additional keys part (this number of bytes must be subtracted because it
is processed by the IV generator).

| K1 | K2 | .... | K64 |      Kiv       |
|----------- key_size ----------------- |
|                      |-key_extra_size-|
|     [64 keys]        |  [1 key]       | => key_parts = 65

Example where key string contains main key K, whitening key
Kw and IV seed Kiv:

|     K       |   Kiv   |       Kw      |
|--------------- key_size --------------|
|             |-----key_extra_size------|
|  [1 key]    | [1 key] |     [1 key]   | => key_parts = 3

Because key_extra_size is calculated during IV mode setting, key
initialization is moved after this step.

For now, this change has no effect to supported modes (thanks to ilog2
rounding) but it is required by the following patch.

Also, fix a sparse warning in crypt_iv_lmk_one().

Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache: log error message if dm_kcopyd_copy() fails
Heinz Mauelshagen [Mon, 14 Oct 2013 15:14:45 +0000 (17:14 +0200)]
dm cache: log error message if dm_kcopyd_copy() fails

A migration failure should be logged (albeit limited).

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache: use cell_defer() boolean argument consistently
Heinz Mauelshagen [Mon, 14 Oct 2013 15:10:47 +0000 (17:10 +0200)]
dm cache: use cell_defer() boolean argument consistently

Fix a few cell_defer() calls that weren't passing a bool.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache: return -EINVAL if the user specifies unknown cache policy
Mikulas Patocka [Tue, 1 Oct 2013 22:35:39 +0000 (18:35 -0400)]
dm cache: return -EINVAL if the user specifies unknown cache policy

Return -EINVAL when the specified cache policy is unknown rather than
returning -ENOMEM.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache metadata: return bool from __superblock_all_zeroes
Joe Thornber [Thu, 24 Oct 2013 18:10:28 +0000 (14:10 -0400)]
dm cache metadata: return bool from __superblock_all_zeroes

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache policy mq: a few small fixes
Joe Thornber [Thu, 24 Oct 2013 18:10:28 +0000 (14:10 -0400)]
dm cache policy mq: a few small fixes

Rename takeout_queue to concat_queue.

Fix a harmless bug in mq policies pop() function.  Currently pop()
always succeeds, with up coming changes this wont be the case.

Fix typo in comment above pre_cache_to_cache prototype.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache policy: remove return from void policy_remove_mapping
Joe Thornber [Thu, 24 Oct 2013 18:10:28 +0000 (14:10 -0400)]
dm cache policy: remove return from void policy_remove_mapping

No need to return from a void function.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache: improve efficiency of quiescing flag management
Joe Thornber [Wed, 30 Oct 2013 17:29:30 +0000 (17:29 +0000)]
dm cache: improve efficiency of quiescing flag management

Make the quiescing flag an atomic_t and stop protecting it with a spin
lock.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache: fix a race condition between queuing new migrations and quiescing for a...
Joe Thornber [Wed, 30 Oct 2013 17:11:58 +0000 (17:11 +0000)]
dm cache: fix a race condition between queuing new migrations and quiescing for a shutdown

The code that was trying to do this was inadequate.  The postsuspend
method (in ioctl context), needs to wait for the worker thread to
acknowledge the request to quiesce.  Otherwise the migration count may
drop to zero temporarily before the worker thread realises we're
quiescing.  In this case the target will be taken down, but the worker
thread may have issued a new migration, which will cause an oops when
it completes.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.9+
11 years agodm cache: io destined for the cache device can now serve as tick bios
Joe Thornber [Mon, 21 Oct 2013 11:51:45 +0000 (12:51 +0100)]
dm cache: io destined for the cache device can now serve as tick bios

Previously only origin bios could trigger ticks, which meant if all
the io was destined for the cache no ticks were generated.  If no ticks
are generated then multiple hits, and movements in general, are
attributed to the same tick.

Only a stop gap fix, we need a better solution.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm cache policy mq: protect residency method with existing mutex
Joe Thornber [Mon, 21 Oct 2013 10:44:57 +0000 (11:44 +0100)]
dm cache policy mq: protect residency method with existing mutex

It is safe to use a mutex in mq_residency() at this point since it is
only called from ioctl context.  But future-proof mq_residency() by
using might_sleep() to catch new contexts that cannot sleep.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm array: fix bug in growing array
Joe Thornber [Wed, 30 Oct 2013 11:19:59 +0000 (11:19 +0000)]
dm array: fix bug in growing array

Entries would be lost if the old tail block was partially filled.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.9+
11 years agodm mpath: requeue I/O during pg_init
Hannes Reinecke [Tue, 1 Oct 2013 09:49:56 +0000 (11:49 +0200)]
dm mpath: requeue I/O during pg_init

When pg_init is running no I/O can be submitted to the underlying
devices, as the path priority etc might change.  When using queue_io for
this, requests will be piling up within multipath as the block I/O
scheduler just sees a _very fast_ device.  All of this queued I/O has to
be resubmitted from within multipathing once pg_init is done.

This approach has the problem that it's virtually impossible to
abort I/O when pg_init is running, and we're adding heavy load
to the devices after pg_init since all of the queued I/O needs to be
resubmitted _before_ any requests can be pulled off of the request queue
and normal operation continues.

This patch will requeue the I/O that triggers the pg_init call, and
return 'busy' when pg_init is in progress.  With these changes the block
I/O scheduler will stop submitting I/O during pg_init, resulting in a
quicker path switch and less I/O pressure (and memory consumption) after
pg_init.

Signed-off-by: Hannes Reinecke <hare@suse.de>
[patch header edited for clarity and typos by Mike Snitzer]
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agodm mpath: fix race condition between multipath_dtr and pg_init_done
Shiva Krishna Merla [Wed, 30 Oct 2013 03:26:38 +0000 (03:26 +0000)]
dm mpath: fix race condition between multipath_dtr and pg_init_done

Whenever multipath_dtr() is happening we must prevent queueing any
further path activation work.  Implement this by adding a new
'pg_init_disabled' flag to the multipath structure that denotes future
path activation work should be skipped if it is set.  By disabling
pg_init and then re-enabling in flush_multipath_work() we also avoid the
potential for pg_init to be initiated while suspending an mpath device.

Without this patch a race condition exists that may result in a kernel
panic:

1) If after pg_init_done() decrements pg_init_in_progress to 0, a call
   to wait_for_pg_init_completion() assumes there are no more pending path
   management commands.
2) If pg_init_required is set by pg_init_done(), due to retryable
   mode_select errors, then process_queued_ios() will again queue the
   path activation work.
3) If free_multipath() completes before activate_path() work is called a
   NULL pointer dereference like the following can be seen when
   accessing members of the recently destructed multipath:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000090
RIP: 0010:[<ffffffffa003db1b>]  [<ffffffffa003db1b>] activate_path+0x1b/0x30 [dm_multipath]
[<ffffffff81090ac0>] worker_thread+0x170/0x2a0
[<ffffffff81096c80>] ? autoremove_wake_function+0x0/0x40

[switch to disabling pg_init in flush_multipath_work & header edits by Mike Snitzer]
Signed-off-by: Shiva Krishna Merla <shivakrishna.merla@netapp.com>
Reviewed-by: Krishnasamy Somasundaram <somasundaram.krishnasamy@netapp.com>
Tested-by: Speagle Andy <Andy.Speagle@netapp.com>
Acked-by: Junichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
11 years agodm: allocate buffer for messages with small number of arguments using GFP_NOIO
Mikulas Patocka [Thu, 31 Oct 2013 17:55:45 +0000 (13:55 -0400)]
dm: allocate buffer for messages with small number of arguments using GFP_NOIO

dm-mpath and dm-thin must process messages even if some device is
suspended, so we allocate argv buffer with GFP_NOIO. These messages have
a small fixed number of arguments.

On the other hand, dm-switch needs to process bulk data using messages
so excessive use of GFP_NOIO could cause trouble.

The patch also lowers the default number of arguments from 64 to 8, so
that there is smaller load on GFP_NOIO allocations.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
11 years agoLinux 3.12-rc5
Linus Torvalds [Sun, 13 Oct 2013 22:41:28 +0000 (15:41 -0700)]
Linux 3.12-rc5

11 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sun, 13 Oct 2013 18:41:26 +0000 (11:41 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fixes from Wim Van Sebroeck:
 "This will fix a deadlock on the ts72xx_wdt driver, fix bitmasks in the
  kempld_wdt driver and fix a section mismatch in the sunxi_wdt driver"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: sunxi: Fix section mismatch
  watchdog: kempld_wdt: Fix bit mask definition
  watchdog: ts72xx_wdt: locking bug in ioctl

11 years agowatchdog: sunxi: Fix section mismatch
Maxime Ripard [Sat, 5 Oct 2013 14:20:17 +0000 (16:20 +0200)]
watchdog: sunxi: Fix section mismatch

This driver has a section mismatch, for probe and remove functions,
leading to the following warning during the compilation.

WARNING: drivers/watchdog/built-in.o(.data+0x24): Section mismatch in
reference from the variable sunxi_wdt_driver to the function
.init.text:sunxi_wdt_probe()
The variable sunxi_wdt_driver references
the function __init sunxi_wdt_probe()

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
11 years agowatchdog: kempld_wdt: Fix bit mask definition
Jingoo Han [Mon, 23 Sep 2013 10:16:57 +0000 (19:16 +0900)]
watchdog: kempld_wdt: Fix bit mask definition

STAGE_CFG bits are defined as [5:4] bits. However, '(((x) & 0x30) << 4)'
handles [9:8] bits. Thus, it should be fixed in order to handle
[5:4] bits.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
11 years agowatchdog: ts72xx_wdt: locking bug in ioctl
Dan Carpenter [Fri, 23 Aug 2013 08:40:59 +0000 (11:40 +0300)]
watchdog: ts72xx_wdt: locking bug in ioctl

Calling the WDIOC_GETSTATUS & WDIOC_GETBOOTSTATUS and twice will cause a
interruptible deadlock.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
11 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sun, 13 Oct 2013 16:59:10 +0000 (09:59 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A small batch of fixes this week, mostly OMAP related.  Nothing stands
  out as particularly controversial.

  Also a fix for a 3.12-rc1 timer regression for Exynos platforms,
  including the Chromebooks"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: exynos: dts: Update 5250 arch timer node with clock frequency
  ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
  ARM: mach-omap2: board-generic: fix undefined symbol
  ARM: dts: Fix pinctrl mask for omap3
  ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
  ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT

11 years agoARM: exynos: dts: Update 5250 arch timer node with clock frequency
Yuvaraj Kumar C D [Wed, 18 Sep 2013 10:11:53 +0000 (15:41 +0530)]
ARM: exynos: dts: Update 5250 arch timer node with clock frequency

Without the "clock-frequency" property in arch timer node, could able
to see the below crash dump.

[<c0014e28>] (unwind_backtrace+0x0/0xf4) from [<c0011808>] (show_stack+0x10/0x14)
[<c0011808>] (show_stack+0x10/0x14) from [<c036ac1c>] (dump_stack+0x7c/0xb0)
[<c036ac1c>] (dump_stack+0x7c/0xb0) from [<c01ab760>] (Ldiv0_64+0x8/0x18)
[<c01ab760>] (Ldiv0_64+0x8/0x18) from [<c0062f60>] (clockevents_config.part.2+0x1c/0x74)
[<c0062f60>] (clockevents_config.part.2+0x1c/0x74) from [<c0062fd8>] (clockevents_config_and_register+0x20/0x2c)
[<c0062fd8>] (clockevents_config_and_register+0x20/0x2c) from [<c02b8e8c>] (arch_timer_setup+0xa8/0x134)
[<c02b8e8c>] (arch_timer_setup+0xa8/0x134) from [<c04b47b4>] (arch_timer_init+0x1f4/0x24c)
[<c04b47b4>] (arch_timer_init+0x1f4/0x24c) from [<c04b40d8>] (clocksource_of_init+0x34/0x58)
[<c04b40d8>] (clocksource_of_init+0x34/0x58) from [<c049ed8c>] (time_init+0x20/0x2c)
[<c049ed8c>] (time_init+0x20/0x2c) from [<c049b95c>] (start_kernel+0x1e0/0x39c)

THis is because the Exynos u-boot, for example on the Chromebooks, doesn't set
up the CNTFRQ register as expected by arch_timer. Instead, we have to specify
the frequency in the device tree like this.

Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
[olof: Changed subject, added comment, elaborated on commit message]
Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoMerge tag 'fixes-against-v3.12-rc3-take2' of git://git.kernel.org/pub/scm/linux/kerne...
Olof Johansson [Sun, 13 Oct 2013 16:33:32 +0000 (09:33 -0700)]
Merge tag 'fixes-against-v3.12-rc3-take2' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren:

Few fixes for omap3 related hangs and errors that people have
noticed now that people are actually using the device tree
based booting for omap3.

Also one regression fix for timer compile for dra7xx when
omap5 is not selected, and a LED regression fix for n900.

* tag 'fixes-against-v3.12-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
  ARM: mach-omap2: board-generic: fix undefined symbol
  ARM: dts: Fix pinctrl mask for omap3
  ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
  ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT

Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoMerge branch 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Sun, 13 Oct 2013 16:13:28 +0000 (09:13 -0700)]
Merge branch 'parisc-3.12' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "This patchset includes a bugfix to prevent a kernel crash when memory
  in page zero is accessed by the kernel itself, e.g.  via
  probe_kernel_read().

  Furthermore we now export flush_cache_page() which is needed
  (indirectly) by the lustre filesystem.  The other patches remove
  unused functions and optimizes the page fault handler to only evaluate
  variables if needed, which again protects against possible kernel
  crashes"

* 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: let probe_kernel_read() capture access to page zero
  parisc: optimize variable initialization in do_page_fault
  parisc: fix interruption handler to respect pagefault_disable()
  parisc: mark parisc_terminate() noreturn and cold.
  parisc: remove unused syscall_ipi() function.
  parisc: kill SMP single function call interrupt
  parisc: Export flush_cache_page() (needed by lustre)

11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sun, 13 Oct 2013 16:02:03 +0000 (09:02 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "Another week, time to send another fixes request taking time out of
  extended weekend for the festivities in this part of the world.

  We have two fixes from Sergei for rcar driver and one fixing memory
  leak of edma driver by Geyslan"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: edma.c: remove edma_desc leakage
  rcar-hpbdma: add parameter to set_slave() method
  rcar-hpbdma: remove shdma_free_irq() calls

11 years agoparisc: let probe_kernel_read() capture access to page zero
Helge Deller [Wed, 9 Oct 2013 21:47:03 +0000 (23:47 +0200)]
parisc: let probe_kernel_read() capture access to page zero

Signed-off-by: Helge Deller <deller@gmx.de>
11 years agoparisc: optimize variable initialization in do_page_fault
John David Anglin [Sat, 5 Oct 2013 14:55:36 +0000 (10:55 -0400)]
parisc: optimize variable initialization in do_page_fault

The attached change defers the initialization of the variables tsk, mm
and flags until they are needed. As a result, the code won't crash if a
kernel probe is done with a corrupt context and the code will be better
optimized.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
11 years agoparisc: fix interruption handler to respect pagefault_disable()
Helge Deller [Tue, 1 Oct 2013 19:54:46 +0000 (21:54 +0200)]
parisc: fix interruption handler to respect pagefault_disable()

Running an "echo t > /proc/sysrq-trigger" crashes the parisc kernel.  The
problem is, that in print_worker_info() we try to read the workqueue info via
the probe_kernel_read() functions which use pagefault_disable() to avoid
crashes like this:
    probe_kernel_read(&pwq, &worker->current_pwq, sizeof(pwq));
    probe_kernel_read(&wq, &pwq->wq, sizeof(wq));
    probe_kernel_read(name, wq->name, sizeof(name) - 1);

The problem here is, that the first probe_kernel_read(&pwq) might return zero
in pwq and as such the following probe_kernel_reads() try to access contents of
the page zero which is read protected and generate a kernel segfault.

With this patch we fix the interruption handler to call parisc_terminate()
directly only if pagefault_disable() was not called (in which case
preempt_count()==0).  Otherwise we hand over to the pagefault handler which
will try to look up the faulting address in the fixup tables.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v3.0+
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
11 years agoparisc: mark parisc_terminate() noreturn and cold.
Helge Deller [Wed, 9 Oct 2013 21:12:46 +0000 (23:12 +0200)]
parisc: mark parisc_terminate() noreturn and cold.

Signed-off-by: Helge Deller <deller@gmx.de>
11 years agoparisc: remove unused syscall_ipi() function.
Helge Deller [Wed, 9 Oct 2013 21:10:14 +0000 (23:10 +0200)]
parisc: remove unused syscall_ipi() function.

Signed-off-by: Helge Deller <deller@gmx.de>
11 years agoparisc: kill SMP single function call interrupt
Jiang Liu [Wed, 11 Sep 2013 16:07:18 +0000 (00:07 +0800)]
parisc: kill SMP single function call interrupt

Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
11 years agoparisc: Export flush_cache_page() (needed by lustre)
Geert Uytterhoeven [Thu, 5 Sep 2013 09:33:15 +0000 (11:33 +0200)]
parisc: Export flush_cache_page() (needed by lustre)

ERROR: "flush_cache_page" [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined!

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Helge Deller <deller@gmx.de>
11 years agovfs: allow O_PATH file descriptors for fstatfs()
Linus Torvalds [Mon, 30 Sep 2013 15:35:10 +0000 (08:35 -0700)]
vfs: allow O_PATH file descriptors for fstatfs()

Olga reported that file descriptors opened with O_PATH do not work with
fstatfs(), found during further development of ksh93's thread support.

There is no reason to not allow O_PATH file descriptors here (fstatfs is
very much a path operation), so use "fdget_raw()".  See commit
55815f70147d ("vfs: make O_PATH file descriptors usable for 'fstat()'")
for a very similar issue reported for fstat() by the same team.

Reported-and-tested-by: ольга крыжановская <olga.kryzhanovska@gmail.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org # O_PATH introduced in 3.0+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 12 Oct 2013 19:55:15 +0000 (12:55 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4

Pull ext4 bugfixes from Ted Ts'o:
 "A bug fix and performance regression fix for ext4"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix memory leak in xattr
  ext4: fix performance regression in writeback of random writes

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sat, 12 Oct 2013 19:54:24 +0000 (12:54 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "We've got more bug fixes in my for-linus branch:

  One of these fixes another corner of the compression oops from last
  time.  Miao nailed down some problems with concurrent snapshot
  deletion and drive balancing.

  I kept out one of his patches for more testing, but these are all
  stable"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix oops caused by the space balance and dead roots
  Btrfs: insert orphan roots into fs radix tree
  Btrfs: limit delalloc pages outside of find_delalloc_range
  Btrfs: use right root when checking for hash collision

11 years agoMerge tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Sat, 12 Oct 2013 18:53:43 +0000 (11:53 -0700)]
Merge tag 'sound-3.12' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "All stable fixes except for a trivial headset mic fixup: the removal
  of bogus frame checks in snd-usb-usx2y driver that have regressed in
  the recent kernel versions, the HD-audio HDMI channel map fix, and a
  few HD-audio device-specific fixes"

* tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Sony VAIO Pro 13 (haswell) now has a working headset jack
  ALSA: hda - Add a headset mic model for ALC269 and friends
  ALSA: hda - Fix microphone for Sony VAIO Pro 13 (Haswell model)
  ALSA: hda - Add fixup for ASUS N56VZ
  ALSA: hda - hdmi: Fix channel map switch not taking effect
  ALSA: hda - Fix mono speakers and headset mic on Dell Vostro 5470
  ALSA: snd-usb-usx2y: remove bogus frame checks

11 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 12 Oct 2013 18:52:40 +0000 (11:52 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "We had various reports of problems with deferred probing in the I2C
  subsystem, so this pull requst is a little bigger than usual.

  Most issues should be addressed now so devices will be found
  correctly.  A few ususal driver bugfixes are in here, too"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i2c-mux-pinctrl: use deferred probe when adapter not found
  i2c: i2c-arb-gpio-challenge: use deferred probe when adapter not found
  i2c: i2c-mux-gpio: use deferred probing
  i2c: i2c-mux-gpio: don't ignore of_get_named_gpio errors
  i2c: omap: Clear ARDY bit twice
  i2c: Not all adapters have a parent
  i2c: i2c-stu300: replace platform_driver_probe to support deferred probing
  i2c: i2c-mxs: replace platform_driver_probe to support deferred probing
  i2c: i2c-imx: replace platform_driver_probe to support deferred probing
  i2c: i2c-designware-platdrv: replace platform_driver_probe to support deferred probing

11 years agoext4: fix memory leak in xattr
Dave Jones [Fri, 11 Oct 2013 00:05:35 +0000 (20:05 -0400)]
ext4: fix memory leak in xattr

If we take the 2nd retry path in ext4_expand_extra_isize_ea, we
potentionally return from the function without having freed these
allocations.  If we don't do the return, we over-write the previous
allocation pointers, so we leak either way.

Spotted with Coverity.

[ Fixed by tytso to set is and bs to NULL after freeing these
  pointers, in case in the retry loop we later end up triggering an
  error causing a jump to cleanup, at which point we could have a double
  free bug. -- Ted ]

Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable@vger.kernel.org
11 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 12 Oct 2013 18:06:18 +0000 (11:06 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull gcc "asm goto" miscompilation workaround from Ingo Molnar:
 "This is the fix for the GCC miscompilation discussed in the following
  lkml thread:

    [x86] BUG: unable to handle kernel paging request at 00740060

  The bug in GCC has been fixed by Jakub and the fix will be part of the
  GCC 4.8.2 release expected to be released next week - so the quirk's
  version test checks for <= 4.8.1.

  The quirk is only added to compiler-gcc4.h and not to the higher level
  compiler.h because all asm goto uses are behind a feature check"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  compiler/gcc4: Add quirk for 'asm goto' miscompilation bug

11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 12 Oct 2013 17:36:03 +0000 (10:36 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "A build fix and a reboot quirk"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/reboot: Add reboot quirk for Dell Latitude E5410
  x86, build, pci: Fix PCI_MSI build on !SMP

11 years agoMerge tag 'arc-fixes-for-3.12-part3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 12 Oct 2013 17:34:14 +0000 (10:34 -0700)]
Merge tag 'arc-fixes-for-3.12-part3' of git://git./linux/kernel/git/vgupta/arc

Pull ARC fix from Vineet Gupta:
 "Fix for broken gdb 'jump'"

* tag 'arc-fixes-for-3.12-part3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: Ignore ptrace SETREGSET request for synthetic register "stop_pc"

11 years agoARC: Ignore ptrace SETREGSET request for synthetic register "stop_pc"
Vineet Gupta [Thu, 10 Oct 2013 14:03:57 +0000 (19:33 +0530)]
ARC: Ignore ptrace SETREGSET request for synthetic register "stop_pc"

ARCompact TRAP_S insn used for breakpoints, commits before exception is
taken (updating architectural PC). So ptregs->ret contains next-PC and
not the breakpoint PC itself. This is different from other restartable
exceptions such as TLB Miss where ptregs->ret has exact faulting PC.
gdb needs to know exact-PC hence ARC ptrace GETREGSET provides for
@stop_pc which returns ptregs->ret vs. EFA depending on the
situation.

However, writing stop_pc (SETREGSET request), which updates ptregs->ret
doesn't makes sense stop_pc doesn't always correspond to that reg as
described above.

This was not an issue so far since user_regs->ret / user_regs->stop_pc
had same value and both writing to ptregs->ret was OK, needless, but NOT
broken, hence not observed.

With gdb "jump", they diverge, and user_regs->ret updating ptregs is
overwritten immediately with stop_pc, which this patch fixes.

Reported-by: Anton Kolesov <akolesov@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
11 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Fri, 11 Oct 2013 18:24:58 +0000 (11:24 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fix from Ralf Baechle:
 "Just one fix.  The stack protector was loading the value of the canary
  instead of its address"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: stack protector: Fix per-task canary switch

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 11 Oct 2013 17:41:21 +0000 (10:41 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "All over the map..

   - nouveau:
     disable MSI, needs more work, will try again next merge window
   - radeon:
      audio + uvd regression fixes, dpm fixes, reset fixes
   - i915:
     the dpms fix might fix your haswell

  And one pain in the ass revert, so we have VGA arbitration that when
  implemented 4-5 years ago really hoped that GPUs could remove
  themselves from arbitration completely once they had a kernel driver.

  It seems Intel hw designers decided that was too nice a facility to
  allow us to have so they removed it when they went on-die (so since
  Ironlake at least).  Now Alex Williamson added support for VGA
  arbitration for newer GPUs however this now exposes itself to
  userspace as requireing arbitration of GPU VGA regions and the X
  server gets involved and disables things that it can't handle when VGA
  access is possibly required around every operation.

  So in order to not break userspace we just reverted things back to the
  old known broken status so maybe we can try and design out way out.

  Ville also had a patch to use stop machine for the two times Intel
  needs to access VGA space, that might be acceptable with some rework,
  but for now myself and Daniel agreed to just go back"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (23 commits)
  Revert "i915: Update VGA arbiter support for newer devices"
  Revert "drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff is done"
  drm/radeon: re-enable sw ACR support on pre-DCE4
  drm/radeon/dpm: disable bapm on TN asics
  drm/radeon: improve soft reset on CIK
  drm/radeon: improve soft reset on SI
  drm/radeon/dpm: off by one in si_set_mc_special_registers()
  drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()
  drm/radeon: forever loop on error in radeon_do_test_moves()
  drm/radeon: fix hw contexts for SUMO2 asics
  drm/radeon: fix typo in CP DMA register headers
  drm/radeon/dpm: disable multiple UVD states
  drm/radeon: use hw generated CTS/N values for audio
  drm/radeon: fix N/CTS clock matching for audio
  drm/radeon: use 64-bit math to calculate CTS values for audio (v2)
  drm/edid: catch kmalloc failure in drm_edid_to_speaker_allocation
  Revert "drm/fb-helper: don't sleep for screen unblank when an oops is in progress"
  drm/gma500: fix things after get/put page helpers
  drm/nouveau/mc: disable msi support by default, it's busted in tons of places
  drm/i915: Only apply DPMS to the encoder if enabled
  ...

11 years agoALSA: hda - Sony VAIO Pro 13 (haswell) now has a working headset jack
David Henningsson [Fri, 11 Oct 2013 11:46:04 +0000 (13:46 +0200)]
ALSA: hda - Sony VAIO Pro 13 (haswell) now has a working headset jack

Just got the positive confirmation from a tester:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1227093/comments/28

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: hda - Add a headset mic model for ALC269 and friends
David Henningsson [Fri, 11 Oct 2013 08:18:46 +0000 (10:18 +0200)]
ALSA: hda - Add a headset mic model for ALC269 and friends

Using the headset mic model will cause the headset mic to be labeled
"headset mic" instead of just "mic".

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoALSA: hda - Fix microphone for Sony VAIO Pro 13 (Haswell model)
David Henningsson [Fri, 11 Oct 2013 08:18:45 +0000 (10:18 +0200)]
ALSA: hda - Fix microphone for Sony VAIO Pro 13 (Haswell model)

The external mic showed up with a precense detect of "always present",
essentially disabling the internal mic. Therefore turn off presence
detection for this pin.

Note: The external mic seems not yet working, but an internal mic is
certainly better than no mic at all.

Cc: stable@vger.kernel.org
BugLink: https://bugs.launchpad.net/bugs/1227093
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agocompiler/gcc4: Add quirk for 'asm goto' miscompilation bug
Ingo Molnar [Thu, 10 Oct 2013 08:16:30 +0000 (10:16 +0200)]
compiler/gcc4: Add quirk for 'asm goto' miscompilation bug

Fengguang Wu, Oleg Nesterov and Peter Zijlstra tracked down
a kernel crash to a GCC bug: GCC miscompiles certain 'asm goto'
constructs, as outlined here:

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670

Implement a workaround suggested by Jakub Jelinek.

Reported-and-tested-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Suggested-by: Jakub Jelinek <jakub@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoRevert "i915: Update VGA arbiter support for newer devices"
Dave Airlie [Fri, 11 Oct 2013 05:12:04 +0000 (15:12 +1000)]
Revert "i915: Update VGA arbiter support for newer devices"

This reverts commit 81b5c7bc8de3e6f63419139c2fc91bf81dea8a7d.

Adding drm/i915 into the vga arbiter chain means that X (in a piece of
well-meant paranoia) will do a get/put on the vga decoding around
_every_ accel call down into the ddx. Which results in some nice
performance disasters [1]. This really breaks userspace, by disabling
DRI for everyone, and stops OpenGL from working, this isn't limited
to just the i915 but both the integrated and discrete GPUs on
multi-gpu systems, in other words this causes untold worlds of pain,

Ville tried to come up with a Great Hack to fiddle the required VGA
I/O ops behind everyone's back using stop_machine, but that didn't
really work out [2]. Given that we're fairly late in the -rc stage for
such games let's just revert this all.

One thing we might want to keep is to delay the disabling of the vga
decoding until the fbdev emulation and the fbcon screen is set up. If
we kill vga mem decoding beforehand fbcon can end up with a white
square in the top-left corner it tried to save from the vga memory for
a seamless transition. And we have bug reports on older platforms
which seem to match these symptoms.

But again that's something to play around with in -next.

References: [1] http://lists.x.org/archives/xorg-devel/2013-September/037763.html
References: [2] http://www.spinics.net/lists/intel-gfx/msg34062.html
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agoRevert "drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff is done"
Dave Airlie [Fri, 11 Oct 2013 05:11:52 +0000 (15:11 +1000)]
Revert "drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff is done"

This reverts commit 6e1b4fdad5157bb9e88777d525704aba24389bee.

This is part of a revert due to a userspace breakage, better explained in the revert of 1a1a4cbf4906a13c0c377f708df5d94168e7b582.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agoMerge branch 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 11 Oct 2013 03:07:15 +0000 (13:07 +1000)]
Merge branch 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Regression fixes for audio and UVD, several hang fixes,
some DPM fixes.

* 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: re-enable sw ACR support on pre-DCE4
  drm/radeon/dpm: disable bapm on TN asics
  drm/radeon: improve soft reset on CIK
  drm/radeon: improve soft reset on SI
  drm/radeon/dpm: off by one in si_set_mc_special_registers()
  drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()
  drm/radeon: forever loop on error in radeon_do_test_moves()
  drm/radeon: fix hw contexts for SUMO2 asics
  drm/radeon: fix typo in CP DMA register headers
  drm/radeon/dpm: disable multiple UVD states
  drm/radeon: use hw generated CTS/N values for audio
  drm/radeon: fix N/CTS clock matching for audio
  drm/radeon: use 64-bit math to calculate CTS values for audio (v2)
  drm/edid: catch kmalloc failure in drm_edid_to_speaker_allocation

11 years agodma: edma.c: remove edma_desc leakage
Geyslan G. Bem [Mon, 7 Oct 2013 22:19:58 +0000 (19:19 -0300)]
dma: edma.c: remove edma_desc leakage

Free memory allocated to edma_desc when failing to allocate slot.

Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agorcar-hpbdma: add parameter to set_slave() method
Sergei Shtylyov [Wed, 25 Sep 2013 22:31:37 +0000 (02:31 +0400)]
rcar-hpbdma: add parameter to set_slave() method

Commit 4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb (DMA: shdma: switch DT mode to
use configuration data from a match table) added a new parameter to set_slave()
method but unfortunately got merged later than commit c4f6c41ba790bbbfcebb4c47a
(dma: add driver for R-Car HPB-DMAC), so that the HPB-DMAC driver retained the
old prototype which caused this warning:

drivers/dma/sh/rcar-hpbdma.c:485: warning: initialization from incompatible
pointer type

The newly added parameter  is used to override DMA slave address from 'struct
hpb_dmae_slave_config', so we have to add the 'slave_addr' field to 'struct
hpb_dmae_chan', conditionally assign it in set_slave() method, and return in
slave_addr() method.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agorcar-hpbdma: remove shdma_free_irq() calls
Sergei Shtylyov [Wed, 25 Sep 2013 22:28:37 +0000 (02:28 +0400)]
rcar-hpbdma: remove shdma_free_irq() calls

Commit c1c63a14f4f2419d093acd7164eccdff315baa86 (DMA: shdma: switch to managed
resource allocation) got rid of shdma_free_irq() but  unfortunately got merged
later than commit c4f6c41ba790bbbfcebb4c47a709ac8ff1fe1af9 (dma: add driver for
R-Car HPB-DMAC), so that the HPB-DMAC driver retained the calls and got broken:

drivers/dma/sh/rcar-hpbdma.c: In function `hpb_dmae_alloc_chan_resources':
drivers/dma/sh/rcar-hpbdma.c:435: error: implicit declaration of function
`shdma_free_irq'

Fix this compilation error by removing the remaining shdma_free_irq() calls.

Reported-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoBtrfs: fix oops caused by the space balance and dead roots
Miao Xie [Wed, 25 Sep 2013 13:47:44 +0000 (21:47 +0800)]
Btrfs: fix oops caused by the space balance and dead roots

When doing space balance and subvolume destroy at the same time, we met
the following oops:

kernel BUG at fs/btrfs/relocation.c:2247!
RIP: 0010: [<ffffffffa04cec16>] prepare_to_merge+0x154/0x1f0 [btrfs]
Call Trace:
 [<ffffffffa04b5ab7>] relocate_block_group+0x466/0x4e6 [btrfs]
 [<ffffffffa04b5c7a>] btrfs_relocate_block_group+0x143/0x275 [btrfs]
 [<ffffffffa0495c56>] btrfs_relocate_chunk.isra.27+0x5c/0x5a2 [btrfs]
 [<ffffffffa0459871>] ? btrfs_item_key_to_cpu+0x15/0x31 [btrfs]
 [<ffffffffa048b46a>] ? btrfs_get_token_64+0x7e/0xcd [btrfs]
 [<ffffffffa04a3467>] ? btrfs_tree_read_unlock_blocking+0xb2/0xb7 [btrfs]
 [<ffffffffa049907d>] btrfs_balance+0x9c7/0xb6f [btrfs]
 [<ffffffffa049ef84>] btrfs_ioctl_balance+0x234/0x2ac [btrfs]
 [<ffffffffa04a1e8e>] btrfs_ioctl+0xd87/0x1ef9 [btrfs]
 [<ffffffff81122f53>] ? path_openat+0x234/0x4db
 [<ffffffff813c3b78>] ? __do_page_fault+0x31d/0x391
 [<ffffffff810f8ab6>] ? vma_link+0x74/0x94
 [<ffffffff811250f5>] vfs_ioctl+0x1d/0x39
 [<ffffffff811258c8>] do_vfs_ioctl+0x32d/0x3e2
 [<ffffffff811259d4>] SyS_ioctl+0x57/0x83
 [<ffffffff813c3bfa>] ? do_page_fault+0xe/0x10
 [<ffffffff813c73c2>] system_call_fastpath+0x16/0x1b

It is because we returned the error number if the reference of the root was 0
when doing space relocation. It was not right here, because though the root
was dead(refs == 0), but the space it held still need be relocated, or we
could not remove the block group. So in this case, we should return the root
no matter it is dead or not.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
11 years agoBtrfs: insert orphan roots into fs radix tree
Miao Xie [Wed, 25 Sep 2013 13:47:43 +0000 (21:47 +0800)]
Btrfs: insert orphan roots into fs radix tree

Now we don't drop all the deleted snapshots/subvolumes before the space
balance. It means we have to relocate the space which is held by the dead
snapshots/subvolumes. So we must into them into fs radix tree, or we would
forget to commit the change of them when doing transaction commit, and it
would corrupt the metadata.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
11 years agoBtrfs: limit delalloc pages outside of find_delalloc_range
Josef Bacik [Tue, 8 Oct 2013 02:11:09 +0000 (22:11 -0400)]
Btrfs: limit delalloc pages outside of find_delalloc_range

Liu fixed part of this problem and unfortunately I steered him in slightly the
wrong direction and so didn't completely fix the problem.  The problem is we
limit the size of the delalloc range we are looking for to max bytes and then we
try to lock that range.  If we fail to lock the pages in that range we will
shrink the max bytes to a single page and re loop.  However if our first page is
inside of the delalloc range then we will end up limiting the end of the range
to a period before our first page.  This is illustrated below

[0 -------- delalloc range --------- 256mb]
                                  [page]

So find_delalloc_range will return with delalloc_start as 0 and end as 128mb,
and then we will notice that delalloc_start < *start and adjust it up, but not
adjust delalloc_end up, so things go sideways.  To fix this we need to not limit
the max bytes in find_delalloc_range, but in find_lock_delalloc_range and that
way we don't end up with this confusion.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
11 years agoBtrfs: use right root when checking for hash collision
Josef Bacik [Wed, 9 Oct 2013 16:24:04 +0000 (12:24 -0400)]
Btrfs: use right root when checking for hash collision

btrfs_rename was using the root of the old dir instead of the root of the new
dir when checking for a hash collision, so if you tried to move a file into a
subvol it would freak out because it would see the file you are trying to move
in its current root.  This fixes the bug where this would fail

btrfs subvol create test1
btrfs subvol create test2
mv test1 test2.

Thanks to Chris Murphy for catching this,

Cc: stable@vger.kernel.org
Reported-by: Chris Murphy <lists@colorremedies.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
11 years agobcache: Fix a null ptr deref regression
Kent Overstreet [Fri, 11 Oct 2013 00:31:15 +0000 (17:31 -0700)]
bcache: Fix a null ptr deref regression

Commit c0f04d88e46d ("bcache: Fix flushes in writeback mode") was fixing
a reported data corruption bug, but it seems some last minute
refactoring or rebasing introduced a null pointer deref.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v3.10
Reported-by: Gabriel de Perthuis <g2p.code@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Fri, 11 Oct 2013 01:16:02 +0000 (18:16 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fix from Guenter Roeck:
 "Fix root cause of crash/error seen in applesmc driver"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (applesmc) Always read until end of data

11 years agoMerge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Fri, 11 Oct 2013 01:15:23 +0000 (18:15 -0700)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild

Pull kbuild fix from Michal Marek:
 "Here is an ARM Makefile fix that you even acked.  After nobody wanted
  to take it, it ended up in the kbuild tree"

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  arm, kbuild: make "make install" not depend on vmlinux

11 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Thu, 10 Oct 2013 20:57:10 +0000 (13:57 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fix from Wim Van Sebroeck:
 "Make sure that the hpwdt driver will not load auxilary iLO devices"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: hpwdt: Patch to ignore auxilary iLO devices

11 years agokobject: show debug info on delayed kobject release
Fengguang Wu [Wed, 9 Oct 2013 01:26:21 +0000 (09:26 +0800)]
kobject: show debug info on delayed kobject release

Useful for locating buggy drivers on kernel oops.

It may add dozens of new lines to boot dmesg. DEBUG_KOBJECT_RELEASE is
hopefully only enabled in debug kernels (like maybe the Fedora rawhide
one, or at developers), so being a bit more verbose is likely ok.

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agowatchdog: hpwdt: Patch to ignore auxilary iLO devices
Mingarelli, Thomas [Fri, 9 Aug 2013 16:31:09 +0000 (16:31 +0000)]
watchdog: hpwdt: Patch to ignore auxilary iLO devices

This patch is to prevent hpwdt from loading on any auxilary iLO devices defined
after the initial (or main) iLO device. All auxilary iLO devices will have a
subsystem device ID set to 0x1979 in order for hpwdt to differentiate between
the two types.

Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Tested-by: Lisa Mitchell <lisa.mitchell@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
11 years agoMerge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
Linus Torvalds [Thu, 10 Oct 2013 19:31:43 +0000 (12:31 -0700)]
Merge tag 'random_for_linus' of git://git./linux/kernel/git/tytso/random

Pull /dev/random changes from Ted Ts'o:
 "These patches are designed to enable improvements to /dev/random for
  non-x86 platforms, in particular MIPS and ARM"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: allow architectures to optionally define random_get_entropy()
  random: run random_int_secret_init() run after all late_initcalls

11 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 10 Oct 2013 18:33:48 +0000 (11:33 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Fixes for 3.12-rc5: two old PPC bugs and one new (3.12-rc2) x86 bug"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: ppc: booke: check range page invalidation progress on page setup
  KVM: PPC: Book3S HV: Fix typo in saving DSCR
  KVM: nVMX: fix shadow on EPT

11 years agoMerge tag 'spi-v3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Thu, 10 Oct 2013 18:33:02 +0000 (11:33 -0700)]
Merge tag 'spi-v3.12-rc4' of git://git./linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "This is all driver updates, mostly fixes for error handling paths
  except for the s3c64xx and hspi fixes for trying to use runtime PM
  before it is enabled and the pxa2xx fix for interactions between power
  management and interrupt handling"

* tag 'spi-v3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: atmel: Fix incorrect error path
  spi/hspi: fixup Runtime PM enable timing
  spi/s3c64xx: Ensure runtime PM is enabled prior to registration
  spi/clps711x: drop clk_put for devm_clk_get in spi_clps711x_probe()
  spi: fix return value check in dspi_probe()
  spi: mpc512x: fix error return code in mpc512x_psc_spi_do_probe()
  spi: clps711x: Don't call kfree() after spi_master_put/spi_unregister_master
  spi/pxa2xx: check status register as well to determine if the device is off

11 years agorandom: allow architectures to optionally define random_get_entropy()
Theodore Ts'o [Sat, 21 Sep 2013 17:58:22 +0000 (13:58 -0400)]
random: allow architectures to optionally define random_get_entropy()

Allow architectures which have a disabled get_cycles() function to
provide a random_get_entropy() function which provides a fine-grained,
rapidly changing counter that can be used by the /dev/random driver.

For example, an architecture might have a rapidly changing register
used to control random TLB cache eviction, or DRAM refresh that
doesn't meet the requirements of get_cycles(), but which is good
enough for the needs of the random driver.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
11 years agoMerge tag 'for-linus-20131008' of git://git.infradead.org/linux-mtd
Linus Torvalds [Thu, 10 Oct 2013 18:30:33 +0000 (11:30 -0700)]
Merge tag 'for-linus-20131008' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Brian Norris:
 - fix a small memory leak in some new ONFI code
 - account for additional odd variations of Micron SPI flash

Acked by David Woodhouse.

* tag 'for-linus-20131008' of git://git.infradead.org/linux-mtd:
  mtd: m25p80: Fix 4 byte addressing mode for Micron devices.
  mtd: nand: fix memory leak in ONFI extended parameter page

11 years agodrm/radeon: re-enable sw ACR support on pre-DCE4
Alex Deucher [Thu, 10 Oct 2013 15:47:01 +0000 (11:47 -0400)]
drm/radeon: re-enable sw ACR support on pre-DCE4

HW ACR support may have issues on some older chips, so
use SW ACR for now until we've tested further.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
CC: Rafał Miłecki <zajec5@gmail.com>
11 years agokvm: ppc: booke: check range page invalidation progress on page setup
Bharat Bhushan [Wed, 7 Aug 2013 10:03:46 +0000 (15:33 +0530)]
kvm: ppc: booke: check range page invalidation progress on page setup

When the MM code is invalidating a range of pages, it calls the KVM
kvm_mmu_notifier_invalidate_range_start() notifier function, which calls
kvm_unmap_hva_range(), which arranges to flush all the TLBs for guest pages.
However, the Linux PTEs for the range being flushed are still valid at
that point.  We are not supposed to establish any new references to pages
in the range until the ...range_end() notifier gets called.
The PPC-specific KVM code doesn't get any explicit notification of that;
instead, we are supposed to use mmu_notifier_retry() to test whether we
are or have been inside a range flush notifier pair while we have been
referencing a page.

This patch calls the mmu_notifier_retry() while mapping the guest
page to ensure we are not referencing a page when in range invalidation.

This call is inside a region locked with kvm->mmu_lock, which is the
same lock that is called by the KVM MMU notifier functions, thus
ensuring that no new notification can proceed while we are in the
locked region.

Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Acked-by: Alexander Graf <agraf@suse.de>
[Backported to 3.12 - Paolo]
Reviewed-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
11 years agoKVM: PPC: Book3S HV: Fix typo in saving DSCR
Paul Mackerras [Fri, 20 Sep 2013 23:53:28 +0000 (09:53 +1000)]
KVM: PPC: Book3S HV: Fix typo in saving DSCR

This fixes a typo in the code that saves the guest DSCR (Data Stream
Control Register) into the kvm_vcpu_arch struct on guest exit.  The
effect of the typo was that the DSCR value was saved in the wrong place,
so changes to the DSCR by the guest didn't persist across guest exit
and entry, and some host kernel memory got corrupted.

Cc: stable@vger.kernel.org [v3.1+]
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
11 years agoKVM: nVMX: fix shadow on EPT
Gleb Natapov [Wed, 9 Oct 2013 16:13:19 +0000 (19:13 +0300)]
KVM: nVMX: fix shadow on EPT

72f857950f6f19 broke shadow on EPT. This patch reverts it and fixes PAE
on nEPT (which reverted commit fixed) in other way.

Shadow on EPT is now broken because while L1 builds shadow page table
for L2 (which is PAE while L2 is in real mode) it never loads L2's
GUEST_PDPTR[0-3].  They do not need to be loaded because without nested
virtualization HW does this during guest entry if EPT is disabled,
but in our case L0 emulates L2's vmentry while EPT is enables, so we
cannot rely on vmcs12->guest_pdptr[0-3] to contain up-to-date values
and need to re-read PDPTEs from L2 memory. This is what kvm_set_cr3()
is doing, but by clearing cache bits during L2 vmentry we drop values
that kvm_set_cr3() read from memory.

So why the same code does not work for PAE on nEPT? kvm_set_cr3()
reads pdptes into vcpu->arch.walk_mmu->pdptrs[]. walk_mmu points to
vcpu->arch.nested_mmu while nested guest is running, but ept_load_pdptrs()
uses vcpu->arch.mmu which contain incorrect values. Fix that by using
walk_mmu in ept_(load|save)_pdptrs.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
11 years agoi2c: i2c-mux-pinctrl: use deferred probe when adapter not found
Wolfram Sang [Thu, 10 Oct 2013 08:19:13 +0000 (10:19 +0200)]
i2c: i2c-mux-pinctrl: use deferred probe when adapter not found

If it is not there yet, it might appear later.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-arb-gpio-challenge: use deferred probe when adapter not found
Wolfram Sang [Thu, 10 Oct 2013 08:19:13 +0000 (10:19 +0200)]
i2c: i2c-arb-gpio-challenge: use deferred probe when adapter not found

If it is not there yet, it might appear later.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-mux-gpio: use deferred probing
Ionut Nicu [Wed, 9 Oct 2013 09:50:45 +0000 (11:50 +0200)]
i2c: i2c-mux-gpio: use deferred probing

If the i2c-parent bus driver is not loaded, returning
-ENODEV will force people to unload and then reload the
module again to get it working.

Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-mux-gpio: don't ignore of_get_named_gpio errors
Ionut Nicu [Tue, 8 Oct 2013 13:51:53 +0000 (15:51 +0200)]
i2c: i2c-mux-gpio: don't ignore of_get_named_gpio errors

of_get_named_gpio could return -E_PROBE_DEFER or another
error code. This error should be passed further instead
of being ignored.

Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: omap: Clear ARDY bit twice
Taras Kondratiuk [Mon, 7 Oct 2013 10:41:59 +0000 (13:41 +0300)]
i2c: omap: Clear ARDY bit twice

Initially commit cb527ede1bf6ff2008a025606f25344b8ed7b4ac
"i2c-omap: Double clear of ARDY status in IRQ handler"
added a workaround for undocumented errata ProDB0017052.
But then commit 1d7afc95946487945cc7f5019b41255b72224b70
"i2c: omap: ack IRQ in parts" refactored code and missed
one of ARDY clearings. So current code violates errata.
It causes often i2c bus timeouts on my Pandaboard.

This patch adds a second clearing in place.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
11 years agoi2c: Not all adapters have a parent
Jean Delvare [Thu, 10 Oct 2013 06:04:06 +0000 (08:04 +0200)]
i2c: Not all adapters have a parent

The code in acpi_i2c_register_devices() assumes that all i2c adapters
have a parent. This is not necessarily the case, for example the
i2c-stub driver instantiate a virtual i2c adapter without a parent.
Check for this to avoid a NULL pointer deference.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-stu300: replace platform_driver_probe to support deferred probing
Wolfram Sang [Tue, 8 Oct 2013 20:35:36 +0000 (22:35 +0200)]
i2c: i2c-stu300: replace platform_driver_probe to support deferred probing

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-mxs: replace platform_driver_probe to support deferred probing
Wolfram Sang [Tue, 8 Oct 2013 20:35:35 +0000 (22:35 +0200)]
i2c: i2c-mxs: replace platform_driver_probe to support deferred probing

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.

Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-imx: replace platform_driver_probe to support deferred probing
Wolfram Sang [Tue, 8 Oct 2013 20:35:34 +0000 (22:35 +0200)]
i2c: i2c-imx: replace platform_driver_probe to support deferred probing

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agoi2c: i2c-designware-platdrv: replace platform_driver_probe to support deferred probing
Wolfram Sang [Tue, 8 Oct 2013 20:35:33 +0000 (22:35 +0200)]
i2c: i2c-designware-platdrv: replace platform_driver_probe to support deferred probing

Subsystems like pinctrl and gpio rightfully make use of deferred probing at
core level. Now, deferred drivers won't be retried if they don't have a .probe
function specified in the driver struct. Fix this driver to have that, so the
devices it supports won't get lost in a deferred probe.

Reported-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
11 years agodrm/radeon/dpm: disable bapm on TN asics
Alex Deucher [Tue, 8 Oct 2013 01:25:39 +0000 (21:25 -0400)]
drm/radeon/dpm: disable bapm on TN asics

Causes hangs on certain boards.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=70053

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agodrm/radeon: improve soft reset on CIK
Alex Deucher [Wed, 2 Oct 2013 18:54:44 +0000 (14:54 -0400)]
drm/radeon: improve soft reset on CIK

Disable CG/PG before resetting.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agodrm/radeon: improve soft reset on SI
Alex Deucher [Wed, 2 Oct 2013 18:50:57 +0000 (14:50 -0400)]
drm/radeon: improve soft reset on SI

Disable CG/PG and stop the rlc before resetting.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon/dpm: off by one in si_set_mc_special_registers()
Dan Carpenter [Sat, 28 Sep 2013 09:35:31 +0000 (12:35 +0300)]
drm/radeon/dpm: off by one in si_set_mc_special_registers()

These checks should be ">=" instead of ">".  j is used as an offset into
the table->mc_reg_address[] array and that has
SMC_SISLANDS_MC_REGISTER_ARRAY_SIZE (16) elements.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()
Dan Carpenter [Fri, 27 Sep 2013 20:18:39 +0000 (23:18 +0300)]
drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()

It should be ">=" instead of ">" here.  The table->mc_reg_address[]
array has SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE (16) elements.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon: forever loop on error in radeon_do_test_moves()
Dan Carpenter [Mon, 1 Jul 2013 16:39:34 +0000 (19:39 +0300)]
drm/radeon: forever loop on error in radeon_do_test_moves()

The error path does this:

for (--i; i >= 0; --i) {

which is a forever loop because "i" is unsigned.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon: fix hw contexts for SUMO2 asics
wojciech kapuscinski [Tue, 1 Oct 2013 23:54:33 +0000 (19:54 -0400)]
drm/radeon: fix hw contexts for SUMO2 asics

They have 4 rather than 8.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63599

Signed-off-by: wojciech kapuscinski <wojtask9@wp.pl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon: fix typo in CP DMA register headers
Alex Deucher [Tue, 1 Oct 2013 20:40:45 +0000 (16:40 -0400)]
drm/radeon: fix typo in CP DMA register headers

Wrong bit offset for SRC endian swapping.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
11 years agodrm/radeon/dpm: disable multiple UVD states
Alex Deucher [Mon, 30 Sep 2013 23:11:24 +0000 (19:11 -0400)]
drm/radeon/dpm: disable multiple UVD states

Always use the regular UVD state for now.  This fixes
a performance regression with UVD playback on certain APUs.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
11 years agodrm/radeon: use hw generated CTS/N values for audio
Alex Deucher [Fri, 27 Sep 2013 22:22:15 +0000 (18:22 -0400)]
drm/radeon: use hw generated CTS/N values for audio

Use the hw generated values rather than calculating
them in the driver.  There may be some older r6xx
asics where this doesn't work correctly.  This remains
to be seen.

See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=69675

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>