Commit Graph

286970 Commits

Author SHA1 Message Date
Rafael J. Wysocki 2ee619f948 PM / shmobile: Make TMU driver use pm_genpd_dev_always_on()
Make the TMU clocksource driver mark its device as "always on"
using pm_genpd_dev_always_on() to protect it from surprise power
removals and make sh7372_add_standard_devices() add TMU devices on
sh7372 to the A4R power domain so that their "always on" flags
are taken into account as appropriate.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: stable@vger.kernel.org
2012-03-16 21:45:06 +01:00
Rafael J. Wysocki 1e78a0c7fc PM / Domains: Introduce "always on" device flag
The TMU device on the Mackerel board belongs to the A4R power domain
and loses power when the domain is turned off.  Unfortunately, the
TMU driver is not prepared to cope with such situations and crashes
the system when that happens.  To work around this problem introduce
a new helper function, pm_genpd_dev_always_on(), allowing a device
driver to mark its device as "always on" in case it belongs to a PM
domain, which will make the generic PM domains core code avoid
powering off the domain containing the device, both at run time and
during system suspend.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: stable@vger.kernel.org
2012-03-16 21:44:59 +01:00
Rafael J. Wysocki 65533bbf63 PM / Domains: Fix hibernation restore of devices, v2
During resume from hibernation pm_genpd_restore_noirq() should only
power off domains whose suspend_power_off flags are set once and
not every time it is called for a device in the given domain.
Moreover, it shouldn't decrement genpd->suspended_count, because
that field is not touched during device freezing and therefore it is
always equal to 0 when pm_genpd_restore_noirq() runs for the first
device in the given domain.

This means pm_genpd_restore_noirq() may use genpd->suspended_count
to determine whether or not it it has been called for the domain in
question already in this cycle (it only needs to increment that
field every time it runs for this purpose) and whether or not it
should check if the domain needs to be powered off.  For that to
work, though, pm_genpd_prepare() has to clear genpd->suspended_count
when it runs for the first device in the given domain (in which case
that flag need not be cleared during domain initialization).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@vger.kernel.org
2012-03-16 21:44:48 +01:00
Rafael J. Wysocki cc85b20780 PM / Domains: Fix handling of wakeup devices during system resume
During system suspend pm_genpd_suspend_noirq() checks if the given
device is in a wakeup path (i.e. it appears to be needed for one or
more wakeup devices to work or is a wakeup device itself) and if it
needs to be "active" for wakeup to work.  If that is the case, the
function returns 0 without incrementing the device domain's counter
of suspended devices and without executing genpd_stop_dev() for the
device.  In consequence, the device is not stopped (e.g. its clock
isn't disabled) and power is always supplied to its domain in the
resulting system sleep state.

However, pm_genpd_resume_noirq() doesn't repeat that check and it
runs genpd_start_dev() and decrements the domain's counter of
suspended devices even for the wakeup device that weren't stopped by
pm_genpd_suspend_noirq().  As a result, the start callback may be run
unnecessarily for them and their domains' counters of suspended
devices may become negative.  Both outcomes aren't desirable, so fix
pm_genpd_resume_noirq() to look for wakeup devices that might not be
stopped by during system suspend.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Simon Horman <horms@verge.net.au>
Cc: stable@vger.kernel.org
2012-03-16 21:44:41 +01:00
Magnus Damm b642631d38 PM / Domains: Fix include for PM_GENERIC_DOMAINS=n case
Fix pm_genpd_init() arguments and make sure dev_gpd_data() and
simple_qos_governor exist regardless of CONFIG_PM_GENERIC_DOMAINS
setting.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-03-04 23:09:10 +01:00
Guennadi Liakhovetski 9b4f617b1c PM / Domains: Provide a dummy dev_gpd_data() when generic domains are not used
dev_gpd_data() is a generic macro, also useful for drivers. Hence it should
be available also when CONFIG_PM_GENERIC_DOMAINS is not selected. OTOH,
to_gpd_data() is so far unused outside of the generic PM domain code and
does not seem to be very useful without CONFIG_PM_GENERIC_DOMAINS.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-02-09 23:57:15 +01:00
Rafael J. Wysocki dcaad77a80 Merge branch 'v3.4-for-rafael' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into pm-domains
* 'v3.4-for-rafael' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Hook up power domains to generic power domain infrastructure
  PM / Domains: Add OF support
2012-02-01 22:18:43 +01:00
Rafael J. Wysocki 0496c8ae36 PM / Domains: Run late/early device suspend callbacks at the right time
After the introduction of the late/early phases of device
suspend/resume during system-wide power transitions it is possible
to make the generic PM domains code execute its default late/early
device suspend/resume callbacks during those phases instead of the
corresponding _noirq phases.  The _noirq device suspend/resume
phases were only used for executing those callbacks, because this
was the only way it could be done, but now we can do better.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-01-29 20:39:02 +01:00
Rafael J. Wysocki e470d06655 PM / Sleep: Introduce generic callbacks for new device PM phases
Introduce generic subsystem callbacks for the new phases of device
suspend/resume during system power transitions: "late suspend",
"early resume", "late freeze", "early thaw", "late poweroff",
"early restore".

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-01-29 20:38:41 +01:00
Rafael J. Wysocki cf579dfb82 PM / Sleep: Introduce "late suspend" and "early resume" of devices
The current device suspend/resume phases during system-wide power
transitions appear to be insufficient for some platforms that want
to use the same callback routines for saving device states and
related operations during runtime suspend/resume as well as during
system suspend/resume.  In principle, they could point their
.suspend_noirq() and .resume_noirq() to the same callback routines
as their .runtime_suspend() and .runtime_resume(), respectively,
but at least some of them require device interrupts to be enabled
while the code in those routines is running.

It also makes sense to have device suspend-resume callbacks that will
be executed with runtime PM disabled and with device interrupts
enabled in case someone needs to run some special code in that
context during system-wide power transitions.

Apart from this, .suspend_noirq() and .resume_noirq() were introduced
as a workaround for drivers using shared interrupts and failing to
prevent their interrupt handlers from accessing suspended hardware.
It appears to be better not to use them for other porposes, or we may
have to deal with some serious confusion (which seems to be happening
already).

For the above reasons, introduce new device suspend/resume phases,
"late suspend" and "early resume" (and analogously for hibernation)
whose callback will be executed with runtime PM disabled and with
device interrupts enabled and whose callback pointers generally may
point to runtime suspend/resume routines.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2012-01-29 20:38:29 +01:00
Rafael J. Wysocki 181e9bdef3 PM / Hibernate: Fix s2disk regression related to freezing workqueues
Commit 2aede851dd

  PM / Hibernate: Freeze kernel threads after preallocating memory

introduced a mechanism by which kernel threads were frozen after
the preallocation of hibernate image memory to avoid problems with
frozen kernel threads not responding to memory freeing requests.
However, it overlooked the s2disk code path in which the
SNAPSHOT_CREATE_IMAGE ioctl was run directly after SNAPSHOT_FREE,
which caused freeze_workqueues_begin() to BUG(), because it saw
that worqueues had been already frozen.

Although in principle this issue might be addressed by removing
the relevant BUG_ON() from freeze_workqueues_begin(), that would
reintroduce the very problem that commit 2aede851dd
attempted to avoid into that particular code path.  For this reason,
to fix the issue at hand, introduce thaw_kernel_threads() and make
the SNAPSHOT_FREE ioctl execute it.

Special thanks to Srivatsa S. Bhat for detailed analysis of the
problem.

Reported-and-tested-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: stable@kernel.org
2012-01-29 20:35:52 +01:00
Linus Torvalds 0a96265754 Here are some patches for the 3.3-rc1 tree.
It contains the removal of the sysdev code, now that all users of it are
 gone, as well as some sysfs bugfixes that have been reported by users.
 There are also some documentation updates here as well.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.18 (GNU/Linux)
 
 iEYEABECAAYFAk8jKW4ACgkQMUfUDdst+ynAUwCfVWwHJxpb4DSSMVZhGOnHMQrL
 ZjIAn00gPeSs5u8y1nPvFrFikbon4FDs
 =bzVy
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Here are some patches for the 3.3-rc1 tree.

It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.

* tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
  stable: update documentation to ask for kernel version
  base/core.c:fix typo in comment in function device_add
  Documentation: devres: add allocation functions to list of supported calls
  Documentation update for the driver model core
  kernel-doc: fix new warnings in driver-core
  kernel-doc: fix new warnings in debugfs
  kernel-doc: fix new warnings in device.h
  driver core: remove drivers/base/sys.c and include/linux/sysdev.h
2012-01-28 18:20:48 -08:00
Linus Torvalds e3b8369ca8 Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJPIxnHAAoJENkgDmzRrbjx7IoP/3lxnNaXxPMYToKf3V2A0h6d
 RuSzol3nFa9Na7d4XbrEEZwqVTx+FhGQc1ACH2Ol+/NpK0paHKYlFufuZ1HoSjqr
 QGCP8RvGvtPFTBBTlHUigK4auPQVDdajVByt2B16oR+ESTWRqW4Irt9vDU1xnQhR
 HU1hP6Zp8jDeH8sqvsAZwOcpZ3O+cwYbccGU2Q6mjLJ3dpyosyrXtMjgPC4PPCDt
 NusDZxOXxn6cMk5d5aSQINhfNpTLOCJTLL+VWVlhlep/NwAwE9THLYY6cGQWm2UU
 iHlbPbu2Zp8C0DEaptnc1+zLUgQ0jrNi7w+mkf/RV8ZNqsWxMhSnGjVhBtlv9Yyp
 2n5piCLFda3VFe0mMgsEpAR7r8meYnK36B/1+2tjgTC2c3TkdSdXcQODRG+EN88g
 +hEi9wGm1N6OGzJcYOYlq3l0XKgfe3Gmkl7TgQenJR/BJQM3AljDI5qrB6kbxyIF
 csjXmhtKgvnN5Znz2Wd3cSJL49aYxsKBokzrzdBERdSP3tS1x6W/TjAu083hc9az
 miTuLUvmKhX4dkw9WkGzsMspJ4x9gbidSKsuiROeE4eNCR9eJ8dU440i5HUMRJAX
 OzxSaP9S5TWD6LSOupl1J0AE2OjfMOh+Qdpmn6az6uiJa5JdaPTU0qwhBY7ysbxJ
 H0Af61Lm3vcTVc92XxzT
 =ZXPe
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://github.com/rustyrussell/linux

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  lguest: remove reference from Documentation/virtual/00-INDEX
  virtio: correct the memory barrier in virtqueue_kick_prepare()
  virtio: fix typos of memory barriers
2012-01-28 18:16:09 -08:00
Linus Torvalds 6c334f4f6a Merge branch 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/granttable: Disable grant v2 for HVM domains.
  x86: xen: size struct xen_spinlock to always fit in arch_spinlock_t
2012-01-28 18:15:33 -08:00
Linus Torvalds 67d2433ee7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix reservations in btrfs_page_mkwrite
  Btrfs: advance window_start if we're using a bitmap
  btrfs: mask out gfp flags in releasepage
  Btrfs: fix enospc error caused by wrong checks of the chunk
  Btrfs: do not defrag a file partially
  Btrfs: fix warning for 32-bit build of fs/btrfs/check-integrity.c
  Btrfs: use cluster->window_start when allocating from a cluster bitmap
  Btrfs: Check for NULL page in extent_range_uptodate
  btrfs: Fix busyloops in transaction waiting code
  Btrfs: make sure a bitmap has enough bytes
  Btrfs: fix uninit warning in backref.c
2012-01-28 17:00:19 -08:00
Linus Torvalds 1c36ab1a31 Merge git://www.linux-watchdog.org/linux-watchdog
* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs
  watchdog: via_wdt: Set min_timeout and max_timeout for wdt_dev
  watchdog: Fix typo "unexpectdly"
  watchdog: wafer5823wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
  watchdog: wm8350_wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
  watchdog: Return proper error in nuc900wdt_probe if misc_register fails
  watchdog: Staticise nuc900_wdt
  watchdog: via_wdt: Staticise wdt_pci_table
  watchdog: omap_wdt.c: Fix the mismatch of pm_runtime enable and disable
  watchdog: dw_wdt.c: use devm_request_and_ioremap
  watchdog: imx2_wdt.c: use devm_request_and_ioremap
2012-01-28 16:57:15 -08:00
Linus Torvalds deb9b4ce97 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm: (31 commits)
  ARM: 7304/1: ioremap: fix boundary check when reusing static mapping
  ARM: 7301/1: Rename the T() macro to TUSER() to avoid namespace conflicts
  ARM: 7299/1: ftrace: clear zero bit in reported IPs for Thumb-2
  ARM: 7298/1: realview: fix mapping of MPCore private memory region
  PCMCIA: fix sa1111 oops on remove
  ARM: 7288/1: mach-sa1100: add missing module_init() call
  ARM: 7297/1: smp_twd: make sure timer is stopped before registering it
  ARM: 7296/1: proc-v7.S: remove HARVARD_CACHE preprocessor guards
  ARM: 7295/1: cortex-a7: move proc_info out of !CONFIG_ARM_LPAE block
  ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
  ARM: 7291/1: cache: assume 64-byte L1 cachelines for ARMv7 CPUs
  ARM: 7290/1: vmlinux.lds.S: align the exception fixup table to a 4-byte boundary
  ARM: 7289/1: vmlinux.lds.S: do not hardcode cacheline size as 32 bytes
  MFD: ucb1x00-ts: fix resume failure
  MFD: ucb1x00-core: fix gpiolib direction_output handling
  MFD: ucb1x00-core: fix missing restore of io output data on resume
  MFD: mcp-core: fix mcp_priv() to be more type safe
  MFD: mcp-core: fix complaints from the genirq layer
  Revert "ARM: sa11x0: Implement autoloading of codec and codec pdata for mcp bus."
  Revert "ARM: sa1100: Refactor mcp-sa11x0 to use platform resources."
  ...

Fix up conflict due to arch/arm/mach-mx5/Kconfig having been merged into
mach-imx5 (commit 784a90c0a7d8: "ARM i.MX: Merge i.MX5 support into
mach-imx"), but the ARM_L1_CACHE_SHIFT_6 entry was moved to be driven by
the CPU_V7 logic from it in the old location in rmk's branch (commit
a092f2b15399: "ARM: 7291/1: cache: assume 64-byte L1 cachelines for
ARMv7 CPUs").
2012-01-28 13:27:10 -08:00
Linus Torvalds 81bc3009e0 arm-soc fixes for 3.3-rc:
AT91 needed reset fixes which resulted in some minor code refactoring,
 it also adds a feature-removal for one of their platforms for 3.4.
 The USB patches have been acked by Greg K-H.
 
 i.MX and ux500 both have some minor fixes, nothing controversial.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJPIlhOAAoJEIwa5zzehBx3l+UP/1LcalLOTEU0bthHNBUoQYEQ
 drDqaFlnBsDryuOzbtGGO41jRySqQWQfQTiVThrEpE3ZUH+NLih5cDRk2sUIzdMd
 8tFWMN7HJnvaA0LT6ODcnC4HoRUBWieYLrPnjA+rlUPFCY/vJQ5010xFhZs2nGBo
 Y5AOQ6Fun/1z5P4V5u+6GzKPPsJZPaCqEPwLJoc5yCJgvfO6RnAFuICv0F183lMh
 TYVkZISF3GYdD/wWQZuytYJRj6IB3mV1GCe0q1fRD9E49929mOnC4SZ3gwa3nF4D
 9IAJviVq+YtEIwTw4H+DJ+k7NXS7GR+F6hxcCrWygEYlOgFqHlRYIL35pxXWq+Sm
 s0jMxC3RdyXmbfhuwi4o607OwMQkwVyNM+N5xUGaww4Inn3Lw6VPaqyQRtW6Bhiz
 o/fyuOALFt7FDoLII02BJgFMdoeEV1gfXlTTdiz7yEekE0h9ng0A3VSRQRph3kLn
 CScQZyOFGrFFm9UNM0T0FrWlshd+ZU1yQGAdZHIX/Fv/euLNhXDnF2bKxAx7CiTh
 wcFezf7vjXjs/iTV+ZsDBe0oKWGmdvxVJksDV6X74DlMfZd9AYi+ntvXzvWrcHdp
 C6wmTtePlSbEMem3RhWEQD8EeTy/qwzPRwLVNqlyT7QURhqCgJlbx133gMEt6113
 wd95I9VZjKE6KSKh7BsS
 =nS4F
 -----END PGP SIGNATURE-----

Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

arm-soc fixes for 3.3-rc:

AT91 needed reset fixes which resulted in some minor code refactoring,
it also adds a feature-removal for one of their platforms for 3.4.
The USB patches have been acked by Greg K-H.

i.MX and ux500 both have some minor fixes, nothing controversial.

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arch/arm/mach-imx/mach-mx53_ard.c: add missing iounmap
  ARM: imx: iomux-v1.h: Fix build error due to __init annotation
  ARM: at91: Fix at91sam9g45 and at91cap9 reset
  ARM: at91: make rstc soc independent
  ARM: at91: introduce AT91_SAM9_ALT_RESET to select the at91sam9 alternative reset
  ARM: at91: merge at91cap9_ddrsdr.h in at91sam9_ddrsdr.h
  ARM: at91: fix cap9 ddrsdr register
  ARM/USB: at91/ohci-at91: rename vbus_pin_inverted to vbus_pin_active_low
  USB: at91: fix clk_get error handling
  ARM: at91: removal of CAP9 SoC family
  ARM: at91: fix at91rm9200 soc subtype handling
  mach-ux500: no MMC_CAP_SD_HIGHSPEED on Snowball
  mach-ux500: enable ARM errata 764369
  mach-ux500: do not override outer.inv_all
  mach-ux500: musb: now musb is always in OTG mode
  ARM: imx6: add missing twd_clk for imx6q clock
2012-01-28 13:21:54 -08:00
Rusty Russell 13289d5f2b lguest: remove reference from Documentation/virtual/00-INDEX
We're in tools/lguest now.

Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-28 08:10:23 +10:30
Jason Wang a72caae218 virtio: correct the memory barrier in virtqueue_kick_prepare()
Use virtio_mb() to make sure the available index to be exposed before
checking the the avail event. Otherwise we may get stale value of
avail event in guest and never kick the host after.

Note: this fixes a bug introduced by ee7cd8981e.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
2012-01-28 08:10:23 +10:30
Jason Wang 4dbc5d9f4f virtio: fix typos of memory barriers
Note: this fixes a bug introduced recently in
7b21e34fd1.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-28 08:10:22 +10:30
Pawel Moll 3c424f3598 ARM: 7304/1: ioremap: fix boundary check when reusing static mapping
Since commit 576d2f2525 "ARM: add
generic ioremap optimization by reusing static mappings" ioremap()
is trying to reuse existing static mapping when possible.

The condition checking boundaries of the requested and existing
mappings didn't take in-page offset into consideration though,
which lead to obscure and hard to debug problems when requested
mapping crossed end of the static one.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-27 21:26:38 +00:00
Konrad Rzeszutek Wilk 69e8f430e2 xen/granttable: Disable grant v2 for HVM domains.
As proper scaffolding for supporting error status is not yet
implemented.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000400
IP: [<ffffffff81375ae9>] gnttab_end_foreign_access_ref_v2+0x29/0x40
PGD 32aa3067 PUD 32a87067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
CPU 0
Modules linked in: sg sr_mod cdrom ata_generic ata_piix libata scsi_mod xen_blkfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront
cmd

Pid: 2307, comm: ip Not tainted 3.3.0-rc1 #1 Xen HVM domU
RIP: 0010:[<ffffffff81375ae9>]  [<ffffffff81375ae9>] gnttab_end_foreign_access_ref_v2+0x29/0x40
RSP: 0018:ffff88003be03d38  EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff880033210640 RCX: 0000000000000040
RDX: 0000000000002000 RSI: 0000000000000000 RDI: 0000000000000200
RBP: ffff88003be03d38 R08: 0000000000000101 R09: 0000000000000000
R10: dead000000100100 R11: 0000000000000000 R12: ffff88003be03e48
R13: 0000000000000001 R14: ffff880039461c00 R15: 0000000000000200
FS:  00007fb1f84ec700(0000) GS:ffff88003be00000(0000) knlGS:0000000000000000
...

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-01-27 11:14:16 -05:00
Konrad Rzeszutek Wilk 6c02b7b161 Merge commit 'v3.3-rc1' into stable/for-linus-fixes-3.3
* commit 'v3.3-rc1': (9775 commits)
  Linux 3.3-rc1
  x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits
  qnx4: don't leak ->BitMap on late failure exits
  qnx4: reduce the insane nesting in qnx4_checkroot()
  qnx4: di_fname is an array, for crying out loud...
  KEYS: Permit key_serial() to be called with a const key pointer
  keys: fix user_defined key sparse messages
  ima: fix cred sparse warning
  uml: fix compile for x86-64
  MPILIB: Add a missing ENOMEM check
  tpm: fix (ACPI S3) suspend regression
  nvme: fix merge error due to change of 'make_request_fn' fn type
  xen: using EXPORT_SYMBOL requires including export.h
  gpio: tps65910: Use correct offset for gpio initialization
  acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
  intel_idle: Split up and provide per CPU initialization func
  ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
  tg3: Fix single-vector MSI-X code
  openvswitch: Fix multipart datapath dumps.
  ipv6: fix per device IP snmp counters
  ...
2012-01-27 11:14:02 -05:00
Linus Torvalds acb42a3b61 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
  gma500: Fix suspend/resume functions
  drm/exynos: fixed pm feature for fimd module.
  MAINTAINERS: added maintainer entry for Exynos DRM Driver.
  drm/exynos: fixed build dependency for DRM_EXYNOS_FIMD
  drm/exynos: fix build dependency for DRM_EXYNOS_HDMI
  drm/exynos: use release_mem_region instead of release_resource
  agp: fix scratch page cleanup
  drm/i915: fixup forcewake spinlock fallout in drpc debugfs function
  drm/i915: debugfs: show semaphore registers also on gen7
  drm/i915: allow userspace forcewake references also on gen7
  drm/i915: Re-enable gen7 RC6 and GPU turbo after resume.
  drm/i915: Correct debugfs printout for RC1e.
  Revert "drm/i915: Work around gen7 BLT ring synchronization issues."
  drm/i915: rip out the HWSTAM missed irq workaround
  drm/i915: paper over missed irq issues with force wake voodoo
  drm/i915: Hold gt_lock across forcewake register reads
  drm/i915: Hold gt_lock during reset
  drm/i915: Move reset forcewake processing to gen6_do_reset
  drm/i915: protect force_wake_(get|put) with the gt_lock
  drm/i915: convert force_wake_get to func pointer in the gpu reset code
  ...
2012-01-27 07:56:25 -08:00
Linus Torvalds ea9f7a67a2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix silent output on Haier W18 laptop
  ALSA: hda: set mute led polarity for laptops with buggy BIOS based on SSID
  ALSA: hda - Fix silent output on ASUS A6Rp
  ALSA: Fix memory leak on error in snd_compr_set_params()
  ALSA: ymfpci - Don't create invalid PCM & mixers when AC97 doesn't support
2012-01-27 07:53:06 -08:00
Chris Mason 9998eb7034 Btrfs: fix reservations in btrfs_page_mkwrite
Josef fixed btrfs_page_mkwrite to properly release reserved
extents if there was an error.  But if we fail to get a reservation
and we fail to dirty the inode (for ENOSPC reasons), we'll end up
trying to release a reservation we never had.

This makes sure we only release if we were able to reserve.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-01-27 10:44:44 -05:00
Ryan Mallon 2d8357e66d gma500: Fix suspend/resume functions
Both the suspend and resume functions incorrectly set psbfb =
to_psb_fb(NULL) outside of the loop over all of the framebuffers. Fix
this by moving the assignment of psbfb inside the loop and removing the
initialisation of fb.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-27 11:52:07 +00:00
Seth Heasley 84e83c2846 watchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs
This patch adds the TCO Watchdog DeviceIDs for the Intel Lynx Point PCH.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 10:01:16 +01:00
Axel Lin f6dd94f819 watchdog: via_wdt: Set min_timeout and max_timeout for wdt_dev
Let the watchdog core to check the valid value range of min_timeout/max_timeout.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 10:00:53 +01:00
Masanari Iida b1785dfd4f watchdog: Fix typo "unexpectdly"
Correct typo "unexpectdly" to "unexpectedly" in pnx4008_wdt.c
and stmp3xxx_wdt.c

Signed-off-by: Masanari Iida<standby24x7@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 10:00:15 +01:00
Axel Lin 8a062ac693 watchdog: wafer5823wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
While receiving WDIOS_DISABLECARD option for WDIOC_SETOPTIONS command,
call wafwdt_stop() to disable watchdog.
Call wafwdt_start() while receiving WDIOS_ENABLECARD option.

Current code has reverse behavior.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:55:13 +01:00
Axel Lin ebe06e826f watchdog: wm8350_wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
While receiving WDIOS_DISABLECARD option for WDIOC_SETOPTIONS command,
call wm8350_wdt_stop() to disable watchdog.
Call wm8350_wdt_start() while receiving WDIOS_ENABLECARD option.

Current code has reverse behavior.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:55:04 +01:00
Axel Lin 2865e770c9 watchdog: Return proper error in nuc900wdt_probe if misc_register fails
Return proper error instead of 0 if misc_register fails

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:54:51 +01:00
Axel Lin e352829a67 watchdog: Staticise nuc900_wdt
It is only used in this driver, so no need to make the symbol global.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:54:41 +01:00
Axel Lin 0318e286f9 watchdog: via_wdt: Staticise wdt_pci_table
It is only used in this driver, so no need to make the symbol global.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Marc Vertes <marc.vertes@sigfox.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:54:12 +01:00
Shubhrajyoti D 12c583d8dc watchdog: omap_wdt.c: Fix the mismatch of pm_runtime enable and disable
Currently the watchdog driver calls the pm_runtime_enable and never
the disable. This may cause a warning when pm_runtime_enable
checks for the count match.

Also fixes the error

/build/watchdog # insmod omap_wdt.ko
[   44.999389] omap_wdt omap_wdt: Unbalanced pm_runtime_enable!
[   45.011047] OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
/build/watchdog #

Attempting to fix the same by calling pm_runtime_disable.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:53:53 +01:00
Julia Lawall 52ea9a7d79 watchdog: dw_wdt.c: use devm_request_and_ioremap
Reimplement a call to devm_request_mem_region followed by a call to ioremap
or ioremap_nocache by a call to devm_request_and_ioremap.

The semantic patch that makes this transformation is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@nm@
expression myname;
identifier i;
@@

struct platform_driver i = { .driver = { .name = myname } };

@@
expression dev,res,size;
expression nm.myname;
@@

-if (!devm_request_mem_region(dev, res->start, size,
-                              \(res->name\|dev_name(dev)\|myname\))) {
-   ...
-   return ...;
-}
... when != res->start
(
-devm_ioremap(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
|
-devm_ioremap_nocache(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
)
... when any
    when != res->start
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:53:28 +01:00
Julia Lawall 5d32d4868a watchdog: imx2_wdt.c: use devm_request_and_ioremap
Reimplement a call to devm_request_mem_region followed by a call to ioremap
or ioremap_nocache by a call to devm_request_and_ioremap.

The variable res_size is then no longer needed.

The semantic patch that makes this transformation is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@nm@
expression myname;
identifier i;
@@

struct platform_driver i = { .driver = { .name = myname } };

@@
expression dev,res,size;
expression nm.myname;
@@

-if (!devm_request_mem_region(dev, res->start, size,
-                              \(res->name\|dev_name(dev)\|myname\))) {
-   ...
-   return ...;
-}
... when != res->start
(
-devm_ioremap(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
|
-devm_ioremap_nocache(dev,res->start,size)
+devm_request_and_ioremap(dev,res)
)
... when any
    when != res->start
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-01-27 09:53:19 +01:00
Dave Airlie 24a7eb7954 Merge branch 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-samsung into drm-fixes
* 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-samsung:
  drm/exynos: fixed pm feature for fimd module.
  MAINTAINERS: added maintainer entry for Exynos DRM Driver.
  drm/exynos: fixed build dependency for DRM_EXYNOS_FIMD
  drm/exynos: fix build dependency for DRM_EXYNOS_HDMI
  drm/exynos: use release_mem_region instead of release_resource
2012-01-27 07:16:27 +00:00
Olof Johansson 5e96386431 Merge branch 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
* 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6:
  arch/arm/mach-imx/mach-mx53_ard.c: add missing iounmap
  ARM: imx: iomux-v1.h: Fix build error due to __init annotation
2012-01-26 23:15:11 -08:00
Olof Johansson d8c4cd7463 Merge branch 'fixes-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into fixes
* 'fixes-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  mach-ux500: no MMC_CAP_SD_HIGHSPEED on Snowball
  mach-ux500: enable ARM errata 764369
  mach-ux500: do not override outer.inv_all
  mach-ux500: musb: now musb is always in OTG mode
2012-01-26 23:13:20 -08:00
Olof Johansson 3c8cee3b40 Merge branch 'imx6/fixes' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
* 'imx6/fixes' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: imx6: add missing twd_clk for imx6q clock
2012-01-26 23:12:17 -08:00
Olof Johansson d1a8c54b70 Merge branch 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
* 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91: Fix at91sam9g45 and at91cap9 reset
  ARM: at91: make rstc soc independent
  ARM: at91: introduce AT91_SAM9_ALT_RESET to select the at91sam9 alternative reset
  ARM: at91: merge at91cap9_ddrsdr.h in at91sam9_ddrsdr.h
  ARM: at91: fix cap9 ddrsdr register
  ARM/USB: at91/ohci-at91: rename vbus_pin_inverted to vbus_pin_active_low
  USB: at91: fix clk_get error handling
  ARM: at91: removal of CAP9 SoC family
  ARM: at91: fix at91rm9200 soc subtype handling
2012-01-26 23:06:52 -08:00
Thomas Abraham 91cfbd4ee0 ARM: EXYNOS: Hook up power domains to generic power domain infrastructure
Add support for generic power domain for Exynos4 platforms and remove the
Samsung specific power domain control for Exynos4.

The generic power domain infrastructure is used to control the power domains
available on Exynos4. For non-dt platforms, the power domains are statically
instantiated. For dt platforms, the power domain nodes found in the device
tree are instantiated.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-01-27 15:25:49 +09:00
Thomas Abraham c8aa130b74 PM / Domains: Add OF support
A device node pointer is added to generic pm domain structure to associate
the domain with a node in the device tree. The platform code parses the
device tree to find available nodes representing the generic power domain,
instantiates the available domains and initializes them by calling
pm_genpd_init().

Nodes representing the devices include a phandle of the power domain to
which it belongs. As these devices get instantiated, the driver code
checkes for availability of a power domain phandle, converts the phandle
to a device node and uses the new pm_genpd_of_add_device() api to
associate the device with a power domain.

pm_genpd_of_add_device() runs through its list of registered power domains
and matches the OF node of the domain with the one specified as the
parameter. If a match is found, the device is associated with the matched
domain.

Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-01-27 15:22:07 +09:00
Inki Dae 373af0c0c5 drm/exynos: fixed pm feature for fimd module.
this patch separates fimd specific power on/off function from pm function
and the pm interfaces will call that function for power on or off.
and also removes unnecessary codes of resume function.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-01-27 13:03:59 +09:00
Inki Dae f15013033e MAINTAINERS: added maintainer entry for Exynos DRM Driver.
I'd like to add my colleagues who dedicated to developing and
improving our driver to maintainer entry.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-01-27 10:43:26 +09:00
Inki Dae a4b42dab29 drm/exynos: fixed build dependency for DRM_EXYNOS_FIMD
FB based FIMD and DRM based FIMD drivers use same hardware
so with this patch, only one of them would be selected.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-01-27 10:43:25 +09:00
Seung-Woo Kim 2363dc636d drm/exynos: fix build dependency for DRM_EXYNOS_HDMI
DRM_EXYNOS_HDMI driver and VIDEO_SAMSUNG_S5P_TV driver should be
not enabled at once because they use same HW blocks. So dependency
for DRM_EXYNOS_HDMI is fixed to check VIDEO_SAMSUNG_S5P_TV=n.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-01-27 10:43:24 +09:00