GitHub/MotorolaMobilityLLC/kernel-slsi.git
14 years agoPM: PM QOS update fix
Mark Gross [Sun, 16 May 2010 22:21:03 +0000 (00:21 +0200)]
PM: PM QOS update fix

This update handles a use case where pm_qos update requests need to
silently fail if the update is being sent to a handle that is NULL.

The problem was that the original pm_qos silently fails when a request
update is passed to a parameter that has not been added to the list yet.
This update restores that behavior.

Signed-off-by: markgross <markgross@thegnar.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoFreezer / cgroup freezer: Update stale locking comments
Matt Helsley [Mon, 10 May 2010 21:18:47 +0000 (23:18 +0200)]
Freezer / cgroup freezer: Update stale locking comments

Update stale comments regarding locking order and add a little more detail
so it's easier to follow the locking between the cgroup freezer and the
power management freezer code.

Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / platform_bus: Allow runtime PM by default
Mark Brown [Mon, 10 May 2010 21:10:13 +0000 (23:10 +0200)]
PM / platform_bus: Allow runtime PM by default

Currently the default runtime PM callbacks for platform devices return
-ENOSYS, preventing the use of runtime PM platforms until they have
provided at least a default implementation. This hinders the use of
runtime PM by devices which work with many platforms such as memory
mapped devices, MFDs and on chip IPs shared by multiple architectures.

Change the default implementation to the standard pm_generic_runtime
one, allowing drivers to use runtime PM without per-architecture
changes.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoi2c: Fix bus-level power management callbacks
Rafael J. Wysocki [Mon, 10 May 2010 21:09:30 +0000 (23:09 +0200)]
i2c: Fix bus-level power management callbacks

There are three issues with the i2c bus type's power management
callbacks at the moment.  First, they don't include any hibernate
callbacks, although they should at least include the .restore()
callback (there's no guarantee that the driver will be present in
memory before loading the image kernel and we must restore the
pre-hibernation state of the device).  Second, the "legacy"
callbacks are not going to be invoked by the PM core since the bus
type's pm object is not NULL.  Finally, the system sleep PM
(ie. suspend/resume) callbacks don't check if the device has been
already suspended at run time, in which case they should skip
suspending it.  Also, it looks like the i2c bus type can use the
generic subsystem-level runtime PM callbacks.

For these reasons, rework the system sleep PM callbacks provided by
the i2c bus type to handle hibernation correctly and to invoke the
"legacy" callbacks for drivers that provide them.  In addition to
that make the i2c bus type use the generic subsystem-level runtime
PM callbacks.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
14 years agoPM QOS update
Mark Gross [Wed, 5 May 2010 23:59:26 +0000 (01:59 +0200)]
PM QOS update

This patch changes the string based list management to a handle base
implementation to help with the hot path use of pm-qos, it also renames
much of the API to use "request" as opposed to "requirement" that was
used in the initial implementation.  I did this because request more
accurately represents what it actually does.

Also, I added a string based ABI for users wanting to use a string
interface.  So if the user writes 0xDDDDDDDD formatted hex it will be
accepted by the interface.  (someone asked me for it and I don't think
it hurts anything.)

This patch updates some documentation input I got from Randy.

Signed-off-by: markgross <mgross@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / Hibernate: Fix block_io.c printk warning
Randy Dunlap [Mon, 3 May 2010 22:03:26 +0000 (00:03 +0200)]
PM / Hibernate: Fix block_io.c printk warning

Fix printk format warning in block_io.c:

kernel/power/block_io.c:41: warning: format '%ld' expects type 'long int', but argument 2 has type 'sector_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / Hibernate: Group swap ops
Jiri Slaby [Sat, 1 May 2010 21:54:02 +0000 (23:54 +0200)]
PM / Hibernate: Group swap ops

Move all the swap processing into one function. It will make swap
calls from a non-swap code easier.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / Hibernate: Move the first_sector out of swsusp_write
Jiri Slaby [Sat, 1 May 2010 21:53:02 +0000 (23:53 +0200)]
PM / Hibernate: Move the first_sector out of swsusp_write

The first sector knowledge is swap-only specific. Move it into the
swap handle. This will be needed for later non-swap specific code
moving into snapshot.c.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl>
14 years agoPM / Hibernate: Separate block_io
Jiri Slaby [Sat, 1 May 2010 21:52:34 +0000 (23:52 +0200)]
PM / Hibernate: Separate block_io

Move block I/O operations to a separate file. It is because it will
be used later not only by the swap writer.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / Hibernate: Snapshot cleanup
Jiri Slaby [Sat, 1 May 2010 21:52:02 +0000 (23:52 +0200)]
PM / Hibernate: Snapshot cleanup

Remove support of reads with offset. This means snapshot_read/write_next
now does not accept count parameter. It allows to clean up the functions
and snapshot handle which no longer needs to care about offsets.

/dev/snapshot handler is converted to simple_{read_from,write_to}_buffer
which take care of offsets.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoFS / libfs: Implement simple_write_to_buffer
Jiri Slaby [Sat, 1 May 2010 21:51:22 +0000 (23:51 +0200)]
FS / libfs: Implement simple_write_to_buffer

It will be used in suspend code and serves as an easy wrap around
copy_from_user. Similar to simple_read_from_buffer, it takes care
of transfers with proper lengths depending on available and count
parameters and advances ppos appropriately.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / Hibernate: document open(/dev/snapshot) side effects
Pavel Machek [Fri, 23 Apr 2010 18:32:29 +0000 (20:32 +0200)]
PM / Hibernate: document open(/dev/snapshot) side effects

Opening and closing /dev/snapshot causes the kernel to carry out
some hibernate preparations that should be documented.

[rjw: Added the changelog.]

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM / Runtime: Add sysfs debug files
Dominik Brodowski [Fri, 23 Apr 2010 18:32:23 +0000 (20:32 +0200)]
PM / Runtime: Add sysfs debug files

Add a few sysfs files relating to runtime power management for
advanced debug purposes:

runtime_enabled: is runtime PM enabled for this device? States
are "enabled", "disabled", "forbidden" or a combination
of the latter two.

runtime_status: what state is the device in currently? E.g., it
reports "suspended" for runtime-suspended devices, and
        "active" for active devices. NOTE: if runtime_enabled
returns "disabled", the value of this file may not
reflect its physical state.

runtime_usage: the runtime PM usage count of a device

runtime_active_kids: the runtime PM children usage count of a device, or
0 if the ignore_children flag is set.

Also, CONFIG_PM_SLEEP_ADVANCED_DEBUG is not defined in any Kconfig
file, so replace it with CONFIG_PM_ADVANCED_DEBUG.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM: Improve device power management document
Alan Stern [Fri, 26 Mar 2010 22:53:55 +0000 (23:53 +0100)]
PM: Improve device power management document

Improve the device power management document after it's been
updated by the previous patch.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM: Update device power management document
Rafael J. Wysocki [Fri, 26 Mar 2010 22:53:42 +0000 (23:53 +0100)]
PM: Update device power management document

The device PM document, Documentation/power/devices.txt, is badly
outdated and requires total rework to fit the current design of the
PM framework.  Make it more up to date.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com>
14 years agoPM: Allow runtime_suspend methods to call pm_schedule_suspend()
Alan Stern [Mon, 22 Mar 2010 23:50:07 +0000 (00:50 +0100)]
PM: Allow runtime_suspend methods to call pm_schedule_suspend()

This patch (as1361) changes the runtime PM interface slightly; it
allows suspend requests to be scheduled while the runtime_suspend
method is running.  If the method succeeds then the scheduled request
is cancelled, whereas if the method fails then an idle notification is
sent only if no request was scheduled.

Being able to schedule suspend requests from within a runtime_suspend
method is useful for drivers that need to test for idleness and
suspend the device all while holding a single spinlock, or for drivers
that want to check for idleness by polling.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoPM: pm_wakeup - switch to using bool
Dmitry Torokhov [Mon, 15 Mar 2010 20:44:41 +0000 (21:44 +0100)]
PM: pm_wakeup - switch to using bool

Also change couple of stubs implemented as macros in !CONFIG_PM case
in statinc inline functions to provide proper typechecking of
arguments regardless of config.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
14 years agoMerge branch 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 10 May 2010 16:48:27 +0000 (09:48 -0700)]
Merge branch 'fix/hda' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: Revert "ALSA: hda/realtek: quirk for D945GCLF2 mainboard"
  ALSA: hda - add support for Lenovo ThinkPad X100e in conexant codec
  ALSA: hda - fix DG45ID SPDIF output

14 years agoautofs4-2.6.34-rc1 - fix link_count usage
Ian Kent [Mon, 10 May 2010 08:46:08 +0000 (16:46 +0800)]
autofs4-2.6.34-rc1 - fix link_count usage

After commit 1f36f774b2 ("Switch !O_CREAT case to use of do_last()") in
2.6.34-rc1 autofs direct mounts stopped working.  This is caused by
current->link_count being 0 when ->follow_link() is called from
do_filp_open().

I can't work out why this hasn't been seen before Als patch series.

This patch removes the autofs dependence on current->link_count.

Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Mon, 10 May 2010 16:44:53 +0000 (09:44 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: fix suspend crash by moving initializations earlier
  HID: sony: fix sony_set_operational_bt
  HID: ntrig: Remove unused macro, TripleTap and QuadTap
  HID: ntrig: TipSwitch for single touch mode touch.
  HID: hidraw: fix numbered reports
  HID: wacom: remove annoying non-error printk
  HID: ntrig: Emit TOUCH with DOUBLETAP for single touch
  HID: add support for cymotion master solar keyboard
  HID: ntrig: explain firmware quirk
  HID: fix N-trig touch panel with recent firmware

14 years agoALSA: Revert "ALSA: hda/realtek: quirk for D945GCLF2 mainboard"
Stefan Lippers-Hollmann [Mon, 10 May 2010 15:14:34 +0000 (17:14 +0200)]
ALSA: Revert "ALSA: hda/realtek: quirk for D945GCLF2 mainboard"

This reverts commit 7aee67466536bbf8bb44a95712c848a61c5a0acd.

As it doesn't seem to be universally valid for all mainboard revisions of
the D945GCLF2 and breaks snd-hda-intel/ snd-hda-codec-realtek on the Intel
Corporation "D945GCLF2" (LF94510J.86A.0229.2009.0729.0209) mainboard.

00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High Definition Audio Controller [8086:27d8] (rev 01)

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Cc: <stable@kernel.org> [2.6.33]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda - add support for Lenovo ThinkPad X100e in conexant codec
Andrej Gelenberg [Sun, 9 May 2010 20:10:41 +0000 (22:10 +0200)]
ALSA: hda - add support for Lenovo ThinkPad X100e in conexant codec

Ideapad quirks working for my ThinkPad X100e (microphone is not tested).

Signed-off-by: Andrej Gelenberg <andrej.gelenberg@udo.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoLinux 2.6.34-rc7
Linus Torvalds [Mon, 10 May 2010 01:36:28 +0000 (18:36 -0700)]
Linux 2.6.34-rc7

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Mon, 10 May 2010 01:35:53 +0000 (18:35 -0700)]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] Retry commands with UNIT_ATTENTION sense codes to fix ext3/ext4 I/O error
  [SCSI] Enable retries for SYNCRONIZE_CACHE commands to fix I/O error
  [SCSI] scsi_debug: virtual_gb ignores sector_size
  [SCSI] libiscsi: regression: fix header digest errors
  [SCSI] fix locking around blk_abort_request()
  [SCSI] advansys: fix narrow board error path

14 years agocpuidle: Fix incorrect optimization
Arjan van de Ven [Sat, 8 May 2010 22:47:37 +0000 (15:47 -0700)]
cpuidle: Fix incorrect optimization

commit 672917dcc78 ("cpuidle: menu governor: reduce latency on exit")
added an optimization, where the analysis on the past idle period moved
from the end of idle, to the beginning of the new idle.

Unfortunately, this optimization had a bug where it zeroed one key
variable for new use, that is needed for the analysis.  The fix is
simple, zero the variable after doing the work from the previous idle.

During the audit of the code that found this issue, another issue was
also found; the ->measured_us data structure member is never set, a
local variable is always used instead.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Corrado Zoccolo <czoccolo@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoHID: fix suspend crash by moving initializations earlier
Alan Stern [Fri, 7 May 2010 14:41:10 +0000 (10:41 -0400)]
HID: fix suspend crash by moving initializations earlier

Although the usbhid driver allocates its usbhid structure in the probe
routine, several critical fields in that structure don't get
initialized until usbhid_start().  However if report descriptor
parsing fails then usbhid_start() is never called.  This leads to
problems during system suspend -- the system will freeze.

This patch (as1378) fixes the bug by moving the initialization
statements up into usbhid_probe().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Tested-By: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
14 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Fri, 7 May 2010 21:11:40 +0000 (14:11 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: restore ability of spare drives to spin down.
  md/raid6: Fix raid-6 read-error correction in degraded state

14 years agoMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Fri, 7 May 2010 21:11:09 +0000 (14:11 -0700)]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6

* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: fix compilation after 16bit state locking changes
  pcmcia: order userspace suspend and resume requests
  pcmcia: avoid pccard_validate_cis failure in resume callpath

14 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Fri, 7 May 2010 21:07:20 +0000 (14:07 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  blk-cgroup: Fix an RCU warning in blkiocg_create()
  blk-cgroup: Fix RCU correctness warning in cfq_init_queue()
  drbd: don't expose failed local READ to upper layers

14 years agoMerge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Fri, 7 May 2010 21:02:01 +0000 (14:02 -0700)]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/ttm: Remove the ttm_bo_block_reservation() function.
  drm/ttm: Remove some leftover debug messages.
  drm/radeon: async event synchronization for drmWaitVblank

14 years agovirtio: initialize earlier
Stijn Tintel [Fri, 7 May 2010 04:58:34 +0000 (14:28 +0930)]
virtio: initialize earlier

Move initialization of the virtio framework before the initialization of
mtd, so that block2mtd can be used on virtio-based block devices.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=15644

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Fri, 7 May 2010 20:59:48 +0000 (13:59 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Fix RCU issues in the NFSv4 delegation code
  NFSv4: Fix the locking in nfs_inode_reclaim_delegation()

14 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Fri, 7 May 2010 20:59:22 +0000 (13:59 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: sleep: init_set_sci_en_on_resume for Dell Studio 155x
  ACPI: fix acpi_hest_firmware_first_pci() caused oops
  sbshc: acpi_device_class "smbus_host_controller" too long
  power_meter: acpi_device_class "power_meter_resource" too long
  acpi_pad: "processor_aggregator" name too long
  PNP: don't check for conflicts with bridge windows
  ACPI: DMI init_set_sci_en_on_resume for multiple Lenovo ThinkPads
  PNPACPI: compute Address Space length rather than using _LEN
  ACPI: silence kmemcheck false positive

14 years agoMerge branch 'v4l_for_2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/mcheha...
Linus Torvalds [Fri, 7 May 2010 20:58:56 +0000 (13:58 -0700)]
Merge branch 'v4l_for_2.6.34' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  V4L/DVB: pxa_camera: move fifo reset direct before dma start
  V4L/DVB: video: testing unsigned for less than 0
  V4L/DVB: mx1-camera: compile fix
  V4L/DVB: budget: Oops: "BUG: unable to handle kernel NULL pointer  dereference"
  V4L/DVB: ngene: Workaround for stuck DiSEqC pin
  V4L/DVB: saa7146: fix regression of the av7110/budget-av driver
  V4L/DVB: v4l: fix config dependencies: mxb and saa7191 are V4L2 drivers, not V4L1
  V4L/DVB: feature-removal: announce videotext.h removal
  V4L/DVB: V4L - vpfe capture - fix for kernel crash
  V4L/DVB: gspca: make usb id 0461:0815 get handled by the right driver
  V4L/DVB: gspca - stv06xx: Remove the 046d:08da from the stv06xx driver
  V4L/DVB: gspca - sn9c20x: Correct onstack wait_queue_head declaration
  V4L/DVB: saa7146: fix up bytesperline if it is an impossible value
  V4L/DVB: V4L: vpfe_capture - free ccdc_lock when memory allocation fails
  V4L/DVB: V4L - Makfile:Removed duplicate entry of davinci
  V4L/DVB: omap24xxcam: potential buffer overflow

14 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 7 May 2010 20:58:21 +0000 (13:58 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  rcu: create rcu_my_thread_group_empty() wrapper
  memcg: css_id() must be called under rcu_read_lock()
  cgroup: Check task_lock in task_subsys_state()
  sched: Fix an RCU warning in print_task()
  cgroup: Fix an RCU warning in alloc_css_id()
  cgroup: Fix an RCU warning in cgroup_path()
  KEYS: Fix an RCU warning in the reading of user keys
  KEYS: Fix an RCU warning

14 years agomd: restore ability of spare drives to spin down.
NeilBrown [Fri, 7 May 2010 09:44:26 +0000 (19:44 +1000)]
md: restore ability of spare drives to spin down.

Some time ago we stopped the clean/active metadata updates
from being written to a 'spare' device in most cases so that
it could spin down and say spun down.  Device failure/removal
etc are still recorded on spares.

However commit 51d5668cb2e3fd1827a55 broke this 50% of the time,
depending on whether the event count is even or odd.
The change log entry said:

   This means that the alignment between 'odd/even' and
    'clean/dirty' might take a little longer to attain,

how ever the code makes no attempt to create that alignment, so it
could take arbitrarily long.

So when we find that clean/dirty is not aligned with odd/even,
force a second metadata-update immediately.  There are already cases
where a second metadata-update is needed immediately (e.g. when a
device fails during the metadata update).  We just piggy-back on that.

Reported-by: Joe Bryant <tenminjoe@yahoo.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org
14 years agomd/raid6: Fix raid-6 read-error correction in degraded state
Gabriele A. Trombetti [Wed, 28 Apr 2010 01:51:17 +0000 (11:51 +1000)]
md/raid6: Fix raid-6 read-error correction in degraded state

Fix: Raid-6 was not trying to correct a read-error when in
singly-degraded state and was instead dropping one more device, going to
doubly-degraded state. This patch fixes this behaviour.

Tested-by: Janos Haar <janos.haar@netcenter.hu>
Signed-off-by: Gabriele A. Trombetti <g.trombetti.lkrnl1213@logicschema.com>
Reported-by: Janos Haar <janos.haar@netcenter.hu>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org
14 years agoALSA: hda - fix DG45ID SPDIF output
Wu Fengguang [Fri, 7 May 2010 00:47:54 +0000 (08:47 +0800)]
ALSA: hda - fix DG45ID SPDIF output

This reverts part of commit 52dc438606d1e, in order to fix a regression:
broken SPDIF output on Intel DG45FC motherboard (IDT 92HD73E1X5 codec).

--- DG45FC-IDT-codec-2.6.32  (SPDIF OK)
+++ DG45FC-IDT-codec-2.6.33  (SPDIF broken)

 Node 0x22 [Pin Complex] wcaps 0x400301: Stereo Digital
   Pincap 0x00000010: OUT
-  Pin Default 0x40f000f0: [N/A] Other at Ext N/A
-    Conn = Unknown, Color = Unknown
-    DefAssociation = 0xf, Sequence = 0x0
-  Pin-ctls: 0x00:
+  Pin Default 0x014510a0: [Jack] SPDIF Out at Ext Rear
+    Conn = Optical, Color = Black
+    DefAssociation = 0xa, Sequence = 0x0
+  Pin-ctls: 0x40: OUT
   Connection: 3
      0x25* 0x20 0x21
 Node 0x23 [Pin Complex] wcaps 0x400301: Stereo Digital
   Pincap 0x00000010: OUT
-  Pin Default 0x01451140: [Jack] SPDIF Out at Ext Rear
+  Pin Default 0x074510b0: [Jack] SPDIF Out at Ext Rear Panel
     Conn = Optical, Color = Black
-    DefAssociation = 0x4, Sequence = 0x0
-    Misc = NO_PRESENCE
-  Pin-ctls: 0x40: OUT
+    DefAssociation = 0xb, Sequence = 0x0
+  Pin-ctls: 0x00:
   Connection: 3
      0x26* 0x20 0x21

Cc: <stable@kernel.org>
Cc: Alexey Fisher <bug-track@fisher-privat.net>
Tested-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoblk-cgroup: Fix an RCU warning in blkiocg_create()
Li Zefan [Fri, 7 May 2010 06:57:00 +0000 (08:57 +0200)]
blk-cgroup: Fix an RCU warning in blkiocg_create()

with CONFIG_PROVE_RCU=y, a warning can be triggered:

  # mount -t cgroup -o blkio xxx /mnt
  # mkdir /mnt/subgroup

...
kernel/cgroup.c:4442 invoked rcu_dereference_check() without protection!
...

To fix this, we avoid caling css_depth() here, which is a bit simpler
than the original code.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoMerge branches 'bugzilla-14337', 'bugzilla-14998', 'bugzilla-15407', 'bugzilla-15903...
Len Brown [Fri, 7 May 2010 02:04:31 +0000 (22:04 -0400)]
Merge branches 'bugzilla-14337', 'bugzilla-14998', 'bugzilla-15407', 'bugzilla-15903' and 'misc-2.6.34' into release

14 years agodrm/ttm: Remove the ttm_bo_block_reservation() function.
Thomas Hellstrom [Wed, 28 Apr 2010 09:33:25 +0000 (11:33 +0200)]
drm/ttm: Remove the ttm_bo_block_reservation() function.

It's unused and buggy in its current form, since it can place a bo
in the reserved state without removing it from lru lists.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/ttm: Remove some leftover debug messages.
Thomas Hellstrom [Wed, 28 Apr 2010 09:33:24 +0000 (11:33 +0200)]
drm/ttm: Remove some leftover debug messages.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon: async event synchronization for drmWaitVblank
Jerome Glisse [Thu, 6 May 2010 16:52:14 +0000 (18:52 +0200)]
drm/radeon: async event synchronization for drmWaitVblank

Bring radeon up to speed with the async event synchronization for
drmWaitVblank. See c9a9c5e02aedc1a2815877b0268f886d2640b771 for
more information. Without this patch event never get delivered
to userspace client.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoV4L/DVB: pxa_camera: move fifo reset direct before dma start
Stefan Herbrechtsmeier [Tue, 20 Apr 2010 06:51:29 +0000 (03:51 -0300)]
V4L/DVB: pxa_camera: move fifo reset direct before dma start

Move the fifo reset from pxa_camera_start_capture to pxa_camera_irq direct
before the dma start after an end of frame interrupt to prevent images from
shifting because of old data at the begin of the frame.

Signed-off-by: Stefan Herbrechtsmeier <hbmeier@hni.uni-paderborn.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Tested-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: video: testing unsigned for less than 0
Dan Carpenter [Wed, 7 Apr 2010 09:41:14 +0000 (06:41 -0300)]
V4L/DVB: video: testing unsigned for less than 0

soc_mbus_bytes_per_line() returns -EINVAL on error but we store it in an
unsigned int so the test for less than zero doesn't work.  I think it
always returns "small" positive values so we can just cast it to int
here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: mx1-camera: compile fix
Uwe Kleine-König [Sat, 27 Mar 2010 21:42:13 +0000 (18:42 -0300)]
V4L/DVB: mx1-camera: compile fix

This fixes a regression of

7d58289 (mx1: prefix SOC specific defines with MX1_ and deprecate old names)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: budget: Oops: "BUG: unable to handle kernel NULL pointer dereference"
Bjørn Mork [Wed, 24 Mar 2010 10:57:57 +0000 (07:57 -0300)]
V4L/DVB: budget: Oops: "BUG: unable to handle kernel NULL pointer  dereference"

Never call dvb_frontend_detach if we failed to attach a frontend. This fixes
the following oops, which will be triggered by a missing stv090x module:

[    8.172997] DVB: registering new adapter (TT-Budget S2-1600 PCI)
[    8.209018] adapter has MAC addr = 00:d0:5c:cc:a7:29
[    8.328665] Intel ICH 0000:00:1f.5: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    8.328753] Intel ICH 0000:00:1f.5: setting latency timer to 64
[    8.562047] DVB: Unable to find symbol stv090x_attach()
[    8.562117] BUG: unable to handle kernel NULL pointer dereference at 000000ac
[    8.562239] IP: [<e08b04a3>] dvb_frontend_detach+0x4/0x67 [dvb_core]

Ref http://bugs.debian.org/575207

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: ngene: Workaround for stuck DiSEqC pin
Oliver Endriss [Sun, 21 Mar 2010 14:48:47 +0000 (11:48 -0300)]
V4L/DVB: ngene: Workaround for stuck DiSEqC pin

Send one DiSEqC byte to make sure that the pin is set to low level.

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Reviewed-by: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: saa7146: fix regression of the av7110/budget-av driver
Hans Verkuil [Wed, 24 Mar 2010 22:09:55 +0000 (19:09 -0300)]
V4L/DVB: saa7146: fix regression of the av7110/budget-av driver

An earlier regression fix for the mxb driver (V4L/DVB: saa7146_vv: fix
regression where v4l2_device was registered too late) caused a new
regression in the av7110 driver.

Reverted the old fix and fixed the problem in the mxb driver instead.
Tested on mxb and budget-av cards.

The real problem is that the saa7146 framework has separate probe()
and attach() driver callbacks which should be rolled into one. This
is now done for the mxb driver, but others should do the same. Lack
of hardware makes this hard to do, though. I hope to get hold of some
hexium cards and then I can try to improve the framework to prevent
this from happening again.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: v4l: fix config dependencies: mxb and saa7191 are V4L2 drivers, not V4L1
Hans Verkuil [Mon, 22 Mar 2010 06:14:22 +0000 (03:14 -0300)]
V4L/DVB: v4l: fix config dependencies: mxb and saa7191 are V4L2 drivers, not V4L1

v4l: fix config dependencies: mxb and saa7191 are V4L2 drivers, not V4L1

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: feature-removal: announce videotext.h removal
Hans Verkuil [Mon, 22 Mar 2010 08:43:08 +0000 (05:43 -0300)]
V4L/DVB: feature-removal: announce videotext.h removal

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: V4L - vpfe capture - fix for kernel crash
Muralidharan Karicheri [Thu, 18 Mar 2010 14:44:12 +0000 (11:44 -0300)]
V4L/DVB: V4L - vpfe capture - fix for kernel crash

As part of upstream merge, set_params() function was removed from isif.c.
This requires removal of BUG_ON() and check for set_params ptr in
vpfe_capture.c. Without this kernel crash dump is seen while bootup on DM365

Also made following changes:-

 1) converted error messages to debug messages since it is not right to flood
    the console with error messages for user mistakes.
 2) returns -EINVAL if ioctl is not supported

Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: gspca: make usb id 0461:0815 get handled by the right driver
John Ellson [Wed, 17 Mar 2010 13:22:58 +0000 (10:22 -0300)]
V4L/DVB: gspca: make usb id 0461:0815 get handled by the right driver

The 0461:0815 camera is spca561 based not spca508

Signed-off-by: John Ellson <john.ellson@comcast.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: gspca - stv06xx: Remove the 046d:08da from the stv06xx driver
Erik Andrén [Mon, 8 Mar 2010 20:16:00 +0000 (17:16 -0300)]
V4L/DVB: gspca - stv06xx: Remove the 046d:08da from the stv06xx driver

The 046d:08da usb id shouldn't be associated with the stv06xx driver as they're
not compatible with each other.
This fixes a bug where Quickcam Messenger cams fail to use its proper driver
(gspca-zc3xx), rendering the camera inoperable.

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Tested-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: gspca - sn9c20x: Correct onstack wait_queue_head declaration
Yong Zhang [Fri, 5 Feb 2010 13:52:39 +0000 (10:52 -0300)]
V4L/DVB: gspca - sn9c20x: Correct onstack wait_queue_head declaration

Use DECLARE_WAIT_QUEUE_HEAD_ONSTACK to make lockdep happy

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
CC: Brian Johnson <brijohn@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: saa7146: fix up bytesperline if it is an impossible value
Michael Hunold [Sat, 13 Mar 2010 14:45:46 +0000 (11:45 -0300)]
V4L/DVB: saa7146: fix up bytesperline if it is an impossible value

xawtv using DGA on a Radeon graphics card provides bogus
values to S_FBUF, which will then screw up overlay video:

https://bugs.launchpad.net/ubuntu/+source/xawtv/+bug/499734

This fixes the bytesperline value if it is off completely.

Signed-off-by: Michael Hunold <michael@mihu.de>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: V4L: vpfe_capture - free ccdc_lock when memory allocation fails
Murali Karicheri [Mon, 1 Mar 2010 22:54:02 +0000 (19:54 -0300)]
V4L/DVB: V4L: vpfe_capture - free ccdc_lock when memory allocation fails

This patch fixes a bug in vpfe_probe() that doesn't call mutex_unlock() if memory
allocation for ccdc_cfg fails. See also the smatch warning report from Dan
Carpenter that shows this as an issue.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: V4L - Makfile:Removed duplicate entry of davinci
Vaibhav Hiremath [Sat, 13 Mar 2010 13:58:39 +0000 (10:58 -0300)]
V4L/DVB: V4L - Makfile:Removed duplicate entry of davinci

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB: omap24xxcam: potential buffer overflow
Dan Carpenter [Wed, 10 Mar 2010 10:57:03 +0000 (07:57 -0300)]
V4L/DVB: omap24xxcam: potential buffer overflow

The previous loop goes until last == VIDEO_MAX_FRAME, so this could
potentially go one past the end of the loop.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoACPI: sleep: init_set_sci_en_on_resume for Dell Studio 155x
Kamal Mostafa [Tue, 27 Apr 2010 21:02:40 +0000 (14:02 -0700)]
ACPI: sleep: init_set_sci_en_on_resume for Dell Studio 155x

Add Dell Studio models (1558, 1557, 1555) to the 'set_sci_en_on_resume'
list to fix hang on resume.

BugLink: http://bugs.launchpad.net/bugs/553498
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Alex Chiang <achiang@canonical.com>
Cc: stable@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agorcu: create rcu_my_thread_group_empty() wrapper
Paul E. McKenney [Thu, 6 May 2010 16:28:41 +0000 (09:28 -0700)]
rcu: create rcu_my_thread_group_empty() wrapper

Some RCU-lockdep splat repairs need to know whether they are running
in a single-threaded process.  Unfortunately, the thread_group_empty()
primitive is defined in sched.h, and can induce #include hell.  This
commit therefore introduces a rcu_my_thread_group_empty() wrapper that
is defined in rcupdate.c, thus avoiding the need to include sched.h
everywhere.

Signed-off-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
14 years agoMerge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Thu, 6 May 2010 15:38:20 +0000 (08:38 -0700)]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze

* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Defconfig update
  microblaze: Optimize CACHE_LOOP_LIMITS and CACHE_RANGE_LOOP macros
  microblaze: Fix consistent-sync code
  microblaze: Define correct L1_CACHE_SHIFT value
  microblaze: cpuinfo shows cache line length
  microblaze: Fix kmalloc alignment on non-coherent DMA platforms
  microblaze: Fix typo fault in cache code
  microblaze: Fix consistent code
  microblaze: pci-dma: use include/linux/dma-mapping.h
  microblaze: page.h: Remove get_user_page and free_user_page
  microblaze: Remove "cache" optimized copy_page function
  microblaze: invoke oom-killer from page fault
  microblaze: fix divide by zero exception message
  microblaze: Add isa_dma_bridge_buggy to dma.h
  microblaze: Remove ancient code
  microblaze: Quiet section mismatch warnings for MMU version
  microblaze: Quiet section mismatch warnings
  microblaze: Fix IRQ entry/exit ftracing
  microblaze: resource/PCI: align functions now return start of resource
  microblaze: PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs

14 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Thu, 6 May 2010 15:38:03 +0000 (08:38 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] pxa/colibri: fix missing #include <mach/mfp.h> in colibri.h
  [ARM] pxa/spitz: fix On/off key name to fix warning during boot
  [ARM] pxa: fix the incorrect cpu_is_pxa950()
  [ARM] pxa: update cpuid pattern for pxa9xx in head.S
  [ARM] pxa/viper: fix timeout usage for I2C
  [ARM] pxa/raumfeld: fix button name
  [ARM] pxa/imote2: Fix iMote2 defconfig
  [ARM] pxa: add missing new line to regs-u2d.h
  ARM: 6093/1: Fix kernel memory printing for sparsemem
  arch/arm/include/asm/elf.h: forward-declare the task-struct
  arch/arm/plat-pxa/dma.c: correct NULL test
  ARM: 6076/1: SA1100: add processor check to sa1110-cpufreq driver
  ARM: 6075/1: SA1100: fix wrong CPU type for h3100 and h3600
  ARM: Update mach-types
  ARM: 6066/1: Fix "BUG: scheduling while atomic: swapper/0/0x00000002
  ARM: 6068/1: Fix build break with KPROBES enabled
  mx5: Fix build error for mx51_defconfig

14 years agoMerge branch 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Thu, 6 May 2010 15:37:39 +0000 (08:37 -0700)]
Merge branch 'sh/for-2.6.34' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: fix a number of Oopses and leaks in SH framebuffer driver
  SH: fix error paths in DMA driver
  sh: sh7751 pci controller io port fix
  sh: Fix maximum number of SCIF ports in R2D defconfigs
  SH: fix TS field shift calculation for DMA drivers

14 years agomicroblaze: Defconfig update
Michal Simek [Thu, 6 May 2010 09:37:42 +0000 (11:37 +0200)]
microblaze: Defconfig update

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Optimize CACHE_LOOP_LIMITS and CACHE_RANGE_LOOP macros
Michal Simek [Mon, 26 Apr 2010 06:54:13 +0000 (08:54 +0200)]
microblaze: Optimize CACHE_LOOP_LIMITS and CACHE_RANGE_LOOP macros

1. Remove CACHE_ALL_LOOP2 macro because it is identical to CACHE_ALL_LOOP
2. Change BUG_ON to WARN_ON
3. Remove end aligned from CACHE_LOOP_LIMITS.
C implementation do not need aligned end address and ASM code do aligned
in their macros
4. ASM optimized  CACHE_RANGE_LOOP_1/2 macros needs to get aligned end address.
Because end address is compound from start + size, end address is the first address
which is exclude.

Here is the corresponding code which describe it.
+       int align = ~(line_length - 1);
+       end = ((end & align) == end) ? end - line_length : end & align;

a) end is aligned:
it is necessary to subtruct line length because we don't want to work with
next cacheline
b) end address is not aligned:
Just align it to be ready for ASM code.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Fix consistent-sync code
Michal Simek [Thu, 29 Apr 2010 11:02:17 +0000 (13:02 +0200)]
microblaze: Fix consistent-sync code

PCI_DMA_FROMDEVICE should call invalidation not flushing.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Define correct L1_CACHE_SHIFT value
Michal Simek [Mon, 26 Apr 2010 11:43:23 +0000 (13:43 +0200)]
microblaze: Define correct L1_CACHE_SHIFT value

Microblaze cacheline length is configurable and current cpu
uses two cacheline length 4 and 8.

We are taking conservative maximum value to be sure that cacheline
alignment is satisfied for all cases.

Here is the calculation for cacheline lenght 8  32bit=4Byte values
which is corresponding with SHIFT 5.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: cpuinfo shows cache line length
Michal Simek [Mon, 26 Apr 2010 11:53:04 +0000 (13:53 +0200)]
microblaze: cpuinfo shows cache line length

Show cache line length in /proc/cpuinfo.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Fix kmalloc alignment on non-coherent DMA platforms
Michal Simek [Mon, 26 Apr 2010 11:49:01 +0000 (13:49 +0200)]
microblaze: Fix kmalloc alignment on non-coherent DMA platforms

Based on PowerPC patche 52142e756e9bf6485d3d53596e8aff2e816a7253

PowerPC description:
On platforms doing non-coherent DMA (4xx, 8xx, ...), it's important
that the kmalloc minimum alignment is set to the cache line size, to
avoid sharing cache lines between different objects, so that DMA to
one of the objects doesn't corrupt the other.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Fix typo fault in cache code
Michal Simek [Fri, 23 Apr 2010 09:38:43 +0000 (11:38 +0200)]
microblaze: Fix typo fault in cache code

Copy & paste error.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Fix consistent code
Michal Simek [Sat, 10 Apr 2010 15:34:06 +0000 (17:34 +0200)]
microblaze: Fix consistent code

This patch fix consistent code which had problems with consistent_free
function.
I am not sure if we need to call flush_tlb_all after it but it keeps
tlbs synced.
I added noMMU and MMU version together.

Uncached shadow feature is not tested.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: pci-dma: use include/linux/dma-mapping.h
Michal Simek [Fri, 16 Apr 2010 07:13:27 +0000 (09:13 +0200)]
microblaze: pci-dma: use include/linux/dma-mapping.h

Based on af407c6db16aa9ca63559076dbe620220a822580
and f41b177157718abe9a93868bb76e47d4a6f3681d

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: page.h: Remove get_user_page and free_user_page
Michal Simek [Thu, 22 Apr 2010 06:07:46 +0000 (08:07 +0200)]
microblaze: page.h: Remove get_user_page and free_user_page

Remove ancient macros which are here from Linux-2.4

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Remove "cache" optimized copy_page function
Michal Simek [Thu, 22 Apr 2010 05:28:48 +0000 (07:28 +0200)]
microblaze: Remove "cache" optimized copy_page function

Current implementation doesn't handle dcache_line_length
correctly that's why is better to use generic memcpy.

Cache optimized function could be good way howto improve
performance but must be based on benchmarking not blind
function like this.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: invoke oom-killer from page fault
Nick Piggin [Thu, 22 Apr 2010 16:06:21 +0000 (02:06 +1000)]
microblaze: invoke oom-killer from page fault

As explained in commit 1c0fe6e3bd, we want to call the architecture independent
oom killer when getting an unexplained OOM from handle_mm_fault, rather than
simply killing current.

Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Michal Simek <monstr@monstr.eu>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: fix divide by zero exception message
Randy Dunlap [Wed, 21 Apr 2010 21:11:34 +0000 (14:11 -0700)]
microblaze: fix divide by zero exception message

Fix divide exception message to say "divide by zero".

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Add isa_dma_bridge_buggy to dma.h
Michal Simek [Tue, 20 Apr 2010 17:02:13 +0000 (19:02 +0200)]
microblaze: Add isa_dma_bridge_buggy to dma.h

It is necessary for several drivers.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Remove ancient code
Michal Simek [Fri, 16 Apr 2010 07:41:07 +0000 (09:41 +0200)]
microblaze: Remove ancient code

I found several function which we don't use that's why I am removing them.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Quiet section mismatch warnings for MMU version
Michal Simek [Tue, 13 Apr 2010 06:59:37 +0000 (08:59 +0200)]
microblaze: Quiet section mismatch warnings for MMU version

Remove section mismatch - based on ppc aproach.

WARNING: vmlinux.o(.text+0x64834): Section mismatch in reference
from the function __pte_alloc_kernel() to the function .init.text:early_get_page()
The function __pte_alloc_kernel() references
the function __init early_get_page().
This is often because __pte_alloc_kernel lacks a __init
annotation or the annotation of early_get_page is wrong.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Quiet section mismatch warnings
Steven J. Magnani [Sat, 10 Apr 2010 03:03:37 +0000 (22:03 -0500)]
microblaze: Quiet section mismatch warnings

_start is located in .text, which causes mismatch warnings with
machine_early_init() and start_kernel() in .init.text.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Fix IRQ entry/exit ftracing
Steven J. Magnani [Mon, 12 Apr 2010 21:01:36 +0000 (16:01 -0500)]
microblaze: Fix IRQ entry/exit ftracing

Function traces on Microblaze don't include IRQ entry and exit arrows,
i.e.

 0)               |                            memcpy_toiovec() {
 0)   ==========> |
 0)               |                              do_IRQ() {
 ...
 0)   <========== |
 0) ! 5414.000 us |                            }

...because do_IRQ() doesn't have the proper attributes.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: resource/PCI: align functions now return start of resource
Michal Simek [Fri, 16 Apr 2010 07:04:51 +0000 (09:04 +0200)]
microblaze: resource/PCI: align functions now return start of resource

This change should be part of b26b2d494b659f988b4d75eb394dfa0ddac415c9

Origin description:

resource/PCI: align functions now return start of resource

As suggested by Linus, align functions should return the start
of a resource, not void. An update of "res->start" is no longer
necessary.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
Michal Simek [Fri, 16 Apr 2010 07:03:00 +0000 (09:03 +0200)]
microblaze: PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs

This change should be part of 89a74ecccd1f78e51faf6287e5c0e93a92ac096e

Origin description:

PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs

No functional change; this converts loops that iterate from 0 to
PCI_BUS_NUM_RESOURCES through pci_bus resource[] table to use the
pci_bus_for_each_resource() iterator instead.

This doesn't change the way resources are stored; it merely removes
dependencies on the fact that they're in a table.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agoMerge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Russell King [Thu, 6 May 2010 07:16:34 +0000 (08:16 +0100)]
Merge branch 'fix' of git://git./linux/kernel/git/ycmiao/pxa-linux-2.6

14 years agoblk-cgroup: Fix RCU correctness warning in cfq_init_queue()
Vivek Goyal [Thu, 22 Apr 2010 15:54:52 +0000 (11:54 -0400)]
blk-cgroup: Fix RCU correctness warning in cfq_init_queue()

It is necessary to be in an RCU read-side critical section when invoking
css_id(), so this patch adds one to blkiocg_add_blkio_group().  This is
actually a false positive, because this is called at initialization time
and hence always refers to the root cgroup, which cannot go away.

[  103.790505] ===================================================
[  103.790509] [ INFO: suspicious rcu_dereference_check() usage. ]
[  103.790511] ---------------------------------------------------
[  103.790514] kernel/cgroup.c:4432 invoked rcu_dereference_check() without protection!
[  103.790517]
[  103.790517] other info that might help us debug this:
[  103.790519]
[  103.790521]
[  103.790521] rcu_scheduler_active = 1, debug_locks = 1
[  103.790524] 4 locks held by bash/4422:
[  103.790526]  #0:  (&buffer->mutex){+.+.+.}, at: [<ffffffff8114befa>] sysfs_write_file+0x3c/0x144
[  103.790537]  #1:  (s_active#102){.+.+.+}, at: [<ffffffff8114bfa5>] sysfs_write_file+0xe7/0x144
[  103.790544]  #2:  (&q->sysfs_lock){+.+.+.}, at: [<ffffffff812263b1>] queue_attr_store+0x49/0x8f
[  103.790552]  #3:  (&(&blkcg->lock)->rlock){......}, at: [<ffffffff8122e4db>] blkiocg_add_blkio_group+0x2b/0xad
[  103.790560]
[  103.790561] stack backtrace:
[  103.790564] Pid: 4422, comm: bash Not tainted 2.6.34-rc4-blkio-second-crash #81
[  103.790567] Call Trace:
[  103.790572]  [<ffffffff81068f57>] lockdep_rcu_dereference+0x9d/0xa5
[  103.790577]  [<ffffffff8107fac1>] css_id+0x44/0x57
[  103.790581]  [<ffffffff8122e503>] blkiocg_add_blkio_group+0x53/0xad
[  103.790586]  [<ffffffff81231936>] cfq_init_queue+0x139/0x32c
[  103.790591]  [<ffffffff8121f2d0>] elv_iosched_store+0xbf/0x1bf
[  103.790595]  [<ffffffff812263d8>] queue_attr_store+0x70/0x8f
[  103.790599]  [<ffffffff8114bfa5>] ? sysfs_write_file+0xe7/0x144
[  103.790603]  [<ffffffff8114bfc6>] sysfs_write_file+0x108/0x144
[  103.790609]  [<ffffffff810f527f>] vfs_write+0xae/0x10b
[  103.790612]  [<ffffffff81069863>] ? trace_hardirqs_on_caller+0x10c/0x130
[  103.790616]  [<ffffffff810f539c>] sys_write+0x4a/0x6e
[  103.790622]  [<ffffffff81002b5b>] system_call_fastpath+0x16/0x1b
[  103.790625]

Located-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoACPI: fix acpi_hest_firmware_first_pci() caused oops
Shaohua Li [Thu, 8 Apr 2010 03:16:15 +0000 (11:16 +0800)]
ACPI: fix acpi_hest_firmware_first_pci() caused oops

acpi_hest_firmware_first_pci() could be called when acpi is disabled
and cause system oops.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agosbshc: acpi_device_class "smbus_host_controller" too long
Dan Carpenter [Tue, 27 Apr 2010 21:06:05 +0000 (14:06 -0700)]
sbshc: acpi_device_class "smbus_host_controller" too long

acpi_device_class can only be 19 characters and a NULL terminator.

With the current name we get a buffer overflow in acpi_smbus_hc_add()
when we do:
strcpy(acpi_device_class(device), ACPI_SMB_HC_CLASS);

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agopower_meter: acpi_device_class "power_meter_resource" too long
Dan Carpenter [Tue, 27 Apr 2010 21:01:07 +0000 (14:01 -0700)]
power_meter: acpi_device_class "power_meter_resource" too long

acpi_device_class can only be 19 characters and a NULL terminator.

The current code has a buffer overflow in acpi_power_meter_add():
       strcpy(acpi_device_class(device), ACPI_POWER_METER_CLASS);

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Len Brown <lenb@kernel.org>
Cc: "Darrick J. Wong" <djwong@us.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agoacpi_pad: "processor_aggregator" name too long
Dan Carpenter [Tue, 27 Apr 2010 21:06:05 +0000 (14:06 -0700)]
acpi_pad: "processor_aggregator" name too long

cpi_device_class can only be 19 characters and a NULL terminator.

With the current name we get a buffer overflow in acpi_pad_add()
strcpy(acpi_device_class(device), ACPI_PROCESSOR_AGGREGATOR_CLASS);

[akpm@linux-foundation.org: call it acpi_pad, per Shaohua Li]
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: walter harms <wharms@bfs.de>
Acked-by: Shaohua Li <shaohua.li@intel.com>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agoPNP: don't check for conflicts with bridge windows
Bjorn Helgaas [Mon, 3 May 2010 16:47:21 +0000 (10:47 -0600)]
PNP: don't check for conflicts with bridge windows

With fa35b4926, I broke a lot of PNP resource assignment.  That commit made
PNPACPI include bridge windows as PNP resources, and PNP resource assignment
treats any enabled overlapping PNP resources as conflicts.  Since PCI host
bridge windows typically include most of the I/O port space, this makes PNP
port assigments fail.

The PCI host bridge driver will eventually use those PNP window resources,
so we should make PNP ignore them when checking for conflicts.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=15903

Reported-and-tested-by: Pavel Kysilka <goldenfish@linuxsoft.cz>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
14 years agosh: fix a number of Oopses and leaks in SH framebuffer driver
Guennadi Liakhovetski [Fri, 30 Apr 2010 16:07:00 +0000 (16:07 +0000)]
sh: fix a number of Oopses and leaks in SH framebuffer driver

Fix a number of Oopses, memory leaks and unbalanced calls on error paths in
sh_mobile_lcdcfb.c.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years ago[ARM] pxa/colibri: fix missing #include <mach/mfp.h> in colibri.h
Jakob Viketoft [Wed, 5 May 2010 10:25:27 +0000 (18:25 +0800)]
[ARM] pxa/colibri: fix missing #include <mach/mfp.h> in colibri.h

The use of mfp_cfg_t causes build errors without including <mach/mfp.h>.

CC: stable@kernel.org
CC: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Jakob Viketoft <jakob.viketoft@bitsim.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa/spitz: fix On/off key name to fix warning during boot
Pavel Machek [Wed, 5 May 2010 07:03:12 +0000 (15:03 +0800)]
[ARM] pxa/spitz: fix On/off key name to fix warning during boot

On/Off contains slash in the name, which causes warning during boot.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa: fix the incorrect cpu_is_pxa950()
Haojian Zhuang [Fri, 12 Mar 2010 13:51:54 +0000 (08:51 -0500)]
[ARM] pxa: fix the incorrect cpu_is_pxa950()

Fix the wrong variable used in cpu_is_pxa950().

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa: update cpuid pattern for pxa9xx in head.S
Haojian Zhuang [Fri, 12 Mar 2010 10:47:55 +0000 (05:47 -0500)]
[ARM] pxa: update cpuid pattern for pxa9xx in head.S

Update CPUID pattern of PXA9xx in head.S and fix the duplicate
entries for pxa935.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa/viper: fix timeout usage for I2C
Wolfram Sang [Sun, 18 Apr 2010 11:48:29 +0000 (13:48 +0200)]
[ARM] pxa/viper: fix timeout usage for I2C

The timeout value is in jiffies, so it should be using HZ, not a plain
number. Assume with HZ=100 '100' means 1s here and adapt accordingly.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Marc Zyngier <maz@misterjones.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Paul Shen <paul.shen@marvell.com>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa/raumfeld: fix button name
Daniel Mack [Sun, 18 Apr 2010 07:35:29 +0000 (09:35 +0200)]
[ARM] pxa/raumfeld: fix button name

"on/off button" was recently renamed to remove the slash character.
Follow that change in the pin polarity detection as well.

While at it, fix another cosmetic coding style flaw as well.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa/imote2: Fix iMote2 defconfig
Stefan Schmidt [Thu, 8 Apr 2010 14:03:25 +0000 (16:03 +0200)]
[ARM] pxa/imote2: Fix iMote2 defconfig

- Bring in a CMDLINE that actually works and prints to the right tty
- Compile-in JFFS2 to boot into rootfs
- Remove unneeded options for Bluetooth and radio
- Disable CPU_FREQ as it makes the flash driver fail

Thanks Jonathan for spotting what I messed up.

Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
14 years ago[ARM] pxa: add missing new line to regs-u2d.h
Igor Grinberg [Wed, 7 Apr 2010 08:40:37 +0000 (11:40 +0300)]
[ARM] pxa: add missing new line to regs-u2d.h

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>