Commit Graph

141115 Commits

Author SHA1 Message Date
nagalakshmi.nandigama@lsi.com
09da0b32d0 [SCSI] mpt2sas: Improvement were made to better protect the sas_device, raid_device, and expander_device lists
There were possible race conditions surrounding reading an object
from the link list while from another context in the driver was
removing it. The nature of this enhancement is to rearrange locking
so the link lists are better protected.

Change set:
(1) numerous routines were rearranged so spin locks are held through
the entire time a link list object is being read from or written to.
(2) added new routines for object deletion from link list.  Thus ensuring
lock was held during the deletion of the link list object, then and memory
for object freed outside the lock. The memory was freed outside the lock
so driver had access to device object info which was required for
notifying the scsi mid layer that a device was getting deleted.
(3) added the ioc->blocking_handles parameter.  This is a bitmask used
to identify which devices need blocking when there is device loss.  This was
introduced so that lock can be held for the entire time traversing the link
list objects, and the bitmask was set to indicate which device handles need
blocking. Oustide the lock the ioc->blocking_handles bitmask is traversed,
with the respective device handle the scsi mid layer is called for moving
devices into blocking state.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:27:15 +01:00
nagalakshmi.nandigama@lsi.com
acafc892b0 [SCSI] mpt2sas : Perform Target Reset instead of HBA reset when a SATA_PASSTHROUGH cmd timeout happens
Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:27:08 +01:00
nagalakshmi.nandigama@lsi.com
77a6edffdf [SCSI] mpt2sas: Added multisegment mode support for Linux BSG Driver
Added support for Block IO requests with multiple segments (vectors) in
the SMP handler of the SAS Transport Class. This is required by the
BSG driver. Multisegment support added for both, Request and Response.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:27:02 +01:00
nagalakshmi.nandigama@lsi.com
913809f6e7 [SCSI] mpt2sas: Removed redundant global mutex for IOCTLs
When the lock_kernel and unlock_kernel routines were removed in the
2.6.39 kernel, a global mutex was added on top of the existing mutex
which already existed. With this implementation, only one IOCTL
will be active at any time no matter how many ever controllers
are present. This causes poor performance.

Removed the global mutex so that the driver can work with the existing
semaphore that was already part of the existing code.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:26:56 +01:00
nagalakshmi.nandigama@lsi.com
609dc44b9a [SCSI] mpt2sas: MPI next revision header update
Changeset in MPI headers:
1) Bumped MPI2_HEADER_VERSION_UNIT
2) Added 4K sectors supported bit to CapabilitiesFlags field of IOC Page 6.
3) Added UEFIVersion field to BIOS Page 1 and defined additional
    BiosOptions bits to control UEFI behavior.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:26:49 +01:00
adam radford
e38a813ba9 [SCSI] megaraid_sas: Version and Changelog update
The following patch for megaraid_sas updates the driver version to
v00.00.06.15-rc1, and updates Documentation/scsi/ChangeLog.megaraid_sas.

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:26:41 +01:00
adam radford
c1529fa25e [SCSI] megaraid_sas: Add fpRead/WriteCapable, fpRead/WriteAcrossStripe checks
The following patch for megaraid_sas fixes the fastpath code decision
logic to use fpRead/WriteCapable, fpRead/WriteAcrossStripe flags
instead of the old logic.  This fixes a bug where fastpath writes
could be sent to a read only LD.

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:26:18 +01:00
adam radford
5738f99643 [SCSI] megaraid_sas: Optimize HostMSIxVectors setting
The following patch for megaraid_sas removes an incorrect comment and
optimizes the setting of HostMSIxVectors.  This was found during a
code review by Tomas Henzl @ RedHat.

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:26:10 +01:00
Santosh Nayak
fd00f7c103 [SCSI] pm8001: fix endian issue with code optimization.
Data type of the 'tag' field of 'fw_flash_Update_resp' should be __le32.

Data type of 'pHeader' should be __le32.  Remove 2nd cast to 'piomb'.

Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:25:50 +01:00
Linus Torvalds
19853301ef Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "It's like a grab bag of one liners:

  - core: fix page flip error path, reorder object teardown.
  - usb: fix the drm_usb module license.
  - i915: VT switch on SNB with non-native modes fix, and a regression
    fix from 3.3.
  - radeon: missing unreserve on SI, AGP/VRAM setup fix (fixes radeon on
    IA64, but its a generic bug), an rn50 regression from 3.3, turn off
    MSIs on rv515 (it loses rearms every so often)."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  nouveau: Set special lane map for the right chipset
  drm/radeon: fix load detect on rn50 with hardcoded EDIDs.
  drm: Releasing FBs before releasing GEM objects during drm_release
  drm/nouveau/pm: don't read/write beyond end of stack buffer
  drivers: gpu: drm: gma500: mdfld_dsi_output.h: Remove not unneeded include of version.h
  radeon: fix r600/agp when vram is after AGP (v3)
  drm: fix page_flip error handling
  drm/radeon/kms: fix the regression of DVI connector check
  drm/usb: fix module license on drm/usb layer.
  drm/i915: Do not set "Enable Panel Fitter" on SNB pageflips
  drm/i915: Hold mode_config lock whilst changing mode for lastclose()
  drm/radeon/si: add missing radeon_bo_unreserve in si_rlc_init() v2
  drm/radeon: disable MSI on RV515
  drm/i915: don't clobber the special upscaling lvds timings
2012-04-19 12:08:11 -07:00
Henrik Rydberg
273a50fbcd nouveau: Set special lane map for the right chipset
The refactoring of the nv50 logic, introduced in 8663bc7c, modified the
test for the special lane map used on some Apple computers with Nvidia
chipsets. The tested MBA3,1 would still boot, but resume from suspend
stopped working. This patch restores the old test, which fixes the problem.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 16:37:53 +01:00
Dave Airlie
a09d431f34 drm/radeon: fix load detect on rn50 with hardcoded EDIDs.
When the force changes went in back in 3.3.0, we ended up returning
disconnected in the !force case, and the connected in when forced,
as it hit the hardcoded check.

Fix it so all exits go via the hardcoded check and stop spurious
modesets on platforms with hardcoded EDIDs.

Reported-by: Evan McNabb (Red Hat)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 16:02:18 +01:00
Prathyush
4e47e02d1a drm: Releasing FBs before releasing GEM objects during drm_release
During DRM release, all the FBs and gem objects are released. If
a gem object is being used as a FB and set to a crtc, it must not
be freed before releasing the framebuffer first.

If FBs are released first, the crtc using the FB is disabled first
so now the GEM object can be freed safely. The CRTC will be enabled
again when the driver restores fbdev mode.

Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 14:40:41 +01:00
Jim Meyering
5799d9e2ea drm/nouveau/pm: don't read/write beyond end of stack buffer
NUL-terminate after strncpy.

If the parameter "profile" has length 16 or more, then strncpy
leaves "string" with no NUL terminator, so the following search
for '\n' may read beyond the end of that 16-byte buffer.
If it finds a newline there, then it will also write beyond the
end of that stack buffer.

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 14:38:54 +01:00
Marcos Paulo de Souza
5edaad8700 drivers: gpu: drm: gma500: mdfld_dsi_output.h: Remove not unneeded include of version.h
The output of "make versioncheck" points a incorrect include of
version.h in the drivers/gpu/drm/gma500/mdfld_dsi_output.h:

drivers/gpu/drm/gma500/mdfld_dsi_output.h: 32 linux/version.h not needed.

If we take a look in the file, we can agree to remove it.

Cc: David Airlie <airlied@linux.ie>
Cc: <dri-devel@lists.freedesktop.org>
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 14:38:02 +01:00
Jerome Glisse
dfc6ae5bd7 radeon: fix r600/agp when vram is after AGP (v3)
If AGP is placed in the middle, the size_af is off-by-one, it results
in VRAM being placed at 0x7fffffff instead of 0x8000000.

v2: fix the vram_start setup.
v3: also fix r7xx & newer ASIC

Reported-by: russiane39 on #radeon

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 14:37:42 +01:00
Joonyoung Shim
aef6a7eeac drm: fix page_flip error handling
Free event and restore event_space only when page_flip->flags has
DRM_MODE_PAGE_FLIP_EVENT if page_flip() is failed.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 14:36:51 +01:00
Dave Airlie
d6b8395262 Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: Do not set "Enable Panel Fitter" on SNB pageflips
  drm/i915: Hold mode_config lock whilst changing mode for lastclose()
  drm/i915: don't clobber the special upscaling lvds timings
2012-04-19 14:13:52 +01:00
Takashi Iwai
e363250718 drm/radeon/kms: fix the regression of DVI connector check
The check of the encoder type in the commit [e00e8b5e: drm/radeon/kms:
fix analog load detection on DVI-I connectors] is obviously wrong, and
it's the culprit of the regression on my workstation with DVI-analog
connection resulting in the blank output.

Fixed the typo now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 14:01:10 +01:00
Dave Airlie
b10c6d4b50 drm/usb: fix module license on drm/usb layer.
Allows this module to load correctly with certain debugging options on.

Reported on irc by scientes
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-19 09:33:32 +01:00
Linus Torvalds
743e89ebc0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
 "A couple of bug fixes, one of them is a TLB flush fix.  Included as
  well is one small coding style patch and a patch to update the default
  configuration."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  [S390] Fix compile error in swab.h
  [S390] Fix stfle() lowcore protection problem
  [S390] cpum_cf: get rid of compile warnings
  [S390] irq: simple coding style change
  [S390] update default configuration
  [S390] fix tlb flushing for page table pages
  [S390] kernel: Use local_irq_save() for memcpy_real()
  [S390] s390/char/vmur.c: fix memory leak
  [S390] drivers/s390/block/dasd_eckd.c: add missing dasd_sfree_request
2012-04-18 17:27:50 -07:00
Linus Torvalds
40df43a17f 1) Notable regression fix. Forbid dynamic runtime power management by
default, due to issues with suspend/resume and hotplug.
 
    To re-enable, use sysfs.
 
 2) make ata_print_id atomic, due to ref from multiple contexts
 
 3) sata_mv warning fix
 
 4) ata_piix new PCI ID
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Merge tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev

Pull libara fixes from Jeff Garzik:

 - Notable regression fix.  Forbid dynamic runtime power management by
   default, due to issues with suspend/resume and hotplug.

   To re-enable, use sysfs.

 - make ata_print_id atomic, due to ref from multiple contexts

 - sata_mv warning fix

 - ata_piix new PCI ID

* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: forbid port runtime pm by default, fixing regression
  libata: make ata_print_id atomic
  sata_mv: silence an uninitialized variable warning
  ata_piix: IDE-mode SATA patch for Intel DH89xxCC DeviceIDs
2012-04-18 12:58:29 -07:00
Lin Ming
0c8d32c27f libata: forbid port runtime pm by default, fixing regression
Forbid port runtime pm by default because it has known hotplug issue.
User can allow it by, for example

echo auto > /sys/devices/pci0000:00/0000:00:1f.2/ata2/power/control

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-04-18 14:33:25 -04:00
Thomas Gleixner
9ecf8c0d4f Revert "ACPI: Make ACPI interrupt threaded"
This reverts commit 6fe0d06282.

Paul bisected this regression.

The conversion was done blindly and is wrong, as it does not provide a
primary handler to disable the level type irq on the device level.
Neither does it set the IRQF_ONESHOT flag which handles that at the irq
line level.  This can't be done as the interrupt might be shared, though
we might extend the core to force it.

So an interrupt on this line will wake up the thread, but immediately
unmask the irq after that.  Due to the interrupt being level type the
hardware interrupt is raised over and over and prevents the irq thread
from handling it.  Fail.

request_irq() unfortunately does not refuse such a request and the patch
was obviously never tested with real interrupts.

Bisected-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-18 10:16:27 -07:00
Chris Wilson
99d9acdd0c drm/i915: Do not set "Enable Panel Fitter" on SNB pageflips
Not only do the pageflip work without it at non-native modes (i.e. with
the panel fitter enabled), it also causes normal (non-pageflipped)
modesets to fail.

Reported-by: Adam Jackson <ajax@redhat.com>
Tested-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Wanted-by-for-fixes: Dave Airlie <airlied@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-04-18 10:30:47 +02:00
Linus Torvalds
cdd5983063 virtio: fixes on top of 3.4-rc2
Here are some virtio fixes for 3.4:
 a test build fix, a patch by Ren fixing naming for systems with a massive
 number of virtio blk devices, and balloon fixes for powerpc
 by David Gibson.
 
 There was some discussion about Ren's patch for virtio disc naming: some people
 wanted to move the legacy name mangling function to the block core.  But
 there's no concensus on that yet, and we can always deduplicate later.
 Added comments in the hope that this will stop people from
 copying this legacy naming scheme into future drivers.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael S. Tsirkin:
 "Here are some virtio fixes for 3.4: a test build fix, a patch by Ren
  fixing naming for systems with a massive number of virtio blk devices,
  and balloon fixes for powerpc by David Gibson.

  There was some discussion about Ren's patch for virtio disc naming:
  some people wanted to move the legacy name mangling function to the
  block core.  But there's no concensus on that yet, and we can always
  deduplicate later.  Added comments in the hope that this will stop
  people from copying this legacy naming scheme into future drivers."

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_balloon: fix handling of PAGE_SIZE != 4k
  virtio_balloon: Fix endian bug
  virtio_blk: helper function to format disk names
  tools/virtio: fix up vhost/test module build
2012-04-16 18:34:12 -07:00
Rafael J. Wysocki
a6cb9ee7ca PCI: Retry BARs restoration for Type 0 headers only
Some shortcomings introduced into pci_restore_state() by commit
26f41062f2 ("PCI: check for pci bar restore completion and retry")
have been fixed by recent commit ebfc5b802f ("PCI: Fix regression in
pci_restore_state(), v3"), but that commit treats all PCI devices as
those with Type 0 configuration headers.

That is not entirely correct, because Type 1 and Type 2 headers have
different layouts.  In particular, the area occupied by BARs in Type 0
config headers contains the secondary status register in Type 1 ones and
it doesn't make sense to retry the restoration of that register even if
the value read back from it after a write is not the same as the written
one (it very well may be different).

For this reason, make pci_restore_state() only retry the restoration
of BARs for Type 0 config headers.  This effectively makes it behave
as before commit 26f41062f2 for all header types except for Type 0.

Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-16 18:33:35 -07:00
Chris Wilson
c291be9dba drm/i915: Hold mode_config lock whilst changing mode for lastclose()
Upon lastclose(), we switch back to the fbcon configuration. This
requires taking the mode_config lock in order to serialise the change
with output probing elsewhere.

Reported-by: Oleksij Rempel <bug-track@fisher-privat.net>
References: https://bugs.freedesktop.org/show_bug.cgi?id=48652
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-04-16 20:37:38 +02:00
Alex Deucher
5273db706f drm/radeon/si: add missing radeon_bo_unreserve in si_rlc_init() v2
Forget to unreserve after pinning.  This can lead to problems in
soft reset and resume.

v2: rework patch as per Michel's suggestion.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-16 13:42:04 +01:00
Dave Airlie
16a5e32b83 drm/radeon: disable MSI on RV515
My rv515 card is very flaky with msi enabled. Every so often it loses a rearm
and never comes back, manually banging the rearm brings it back.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-04-16 13:40:04 +01:00
Daniel Vetter
f9bef081c3 drm/i915: don't clobber the special upscaling lvds timings
This regression has been introduced in

commit ca9bfa7eed
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sat Jan 28 14:49:20 2012 +0100

    drm/i915: fixup interlaced vertical timings confusion, part 1

Unfortunately that commit failed to take into account that the lvds
code does some special adjustements to the crtc timings for upscaling
an centering.

Fix this by explicitly computing crtc timings in the lvds mode fixup
function and setting a special flag in mode->private_flags if the crtc
timings have been adjusted.

v2: Add a comment to explain the new mode driver private flag,
suggested by Eugeni Dodonov.

v3: Kill the confusing and now redundant set_crtcinfo call in
intel_fixed_panel_mode, noticed by Chris Wilson.

Reported-and-Tested-by: Hans de Bruin <jmdebruin@xmsnet.nl>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43071
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-04-16 09:21:55 +02:00
Linus Torvalds
9a8e5d4112 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "Nothing too disasterous, the biggest thing being the removal of the
  regulator support for vcore in the AMBA driver; only one SoC was using
  this and it got broken during the last merge window, which then
  started causing problems for other people.  Mutual agreement was
  reached for it to be removed."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7386/1: jump_label: fixup for rename to static_key
  ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
  ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
  ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
  ARM: 7383/1: nommu: populate vectors page from paging_init
  ARM: 7381/1: nommu: fix typo in mm/Kconfig
  ARM: 7380/1: DT: do not add a zero-sized memory property
  ARM: 7379/1: DT: fix atags_to_fdt() second call site
  ARM: 7366/3: amba: Remove AMBA level regulator support
  ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler
  ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
2012-04-15 17:35:19 -07:00
Rafael J. Wysocki
ebfc5b802f PCI: Fix regression in pci_restore_state(), v3
Commit 26f41062f2 ("PCI: check for pci bar restore completion and
retry") attempted to address problems with PCI BAR restoration on
systems where FLR had not been completed before pci_restore_state() was
called, but it did that in an utterly wrong way.

First off, instead of retrying the writes for the BAR registers only, it
did that for all of the PCI config space of the device, including the
status register (whose value after the write quite obviously need not be
the same as the written one).  Second, it added arbitrary delay to
pci_restore_state() even for systems where the PCI config space
restoration was successful at first attempt.  Finally, the mdelay(10) it
added to every iteration of the writing loop was way too much of a delay
for any reasonable device.

All of this actually caused resume failures for some devices on Mikko's
system.

To fix the regression, make pci_restore_state() only retry the writes
for BAR registers and only wait if the first read from the register
doesn't return the written value.  Additionaly, make it wait for 1 ms,
instead of 10 ms, after every failing attempt to write into config
space.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-15 13:06:29 -07:00
Linus Torvalds
6c23b8e933 ARM: a few more SoC fixes for 3.4-rc
* A handful of warning and build fixes for Qualcomm MSM
 * Build/warning and bug fixes for Samsung Exynos
 * A fix from Rob Herring that removes misplaced interrupt-parent
   properties from a few device trees
 * A fix to OMAP dealing with cpufreq build errors, removing some of the
   offending code since it was redundant anyway
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: a few more SoC fixes for 3.4-rc" from Olof Johansson:
 - A handful of warning and build fixes for Qualcomm MSM
 - Build/warning and bug fixes for Samsung Exynos
 - A fix from Rob Herring that removes misplaced interrupt-parent
   properties from a few device trees
 - A fix to OMAP dealing with cpufreq build errors, removing some of the
   offending code since it was redundant anyway

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors
  ARM: dts: remove blank interrupt-parent properties
  ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
  ARM: EXYNOS: Remove broken config values for touchscren for NURI board
  ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
  ARM: EXYNOS: fix regulator name for NURI board
  ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
  ARM: msm: Fix section mismatches in proc_comm.c
  video: msm: Fix section mismatches in mddi.c
  arm: msm: trout: fix compile failure
  arm: msm: halibut: remove unneeded fixup
  ARM: EXYNOS: Add PDMA and MDMA physical base address defines
  ARM: S5PV210: Fix compiler warning in dma.c file
  ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c
  ARM: EXYNOS: Add missing definition for IRQ_I2S0
  ARM: S5PV210: fix unused LDO supply field from wm8994_pdata
2012-04-15 11:14:54 -07:00
Martin K. Petersen
919f797a4c SCSI: Fix error handling when no ULD is attached
Commit 18a4d0a22e ("[SCSI] Handle disk devices which can not process
medium access commands") introduced a bug in which we would attempt to
dereference the scsi driver even when the device had no ULD attached.

Ensure that a driver is registered and make the driver accessor function
more resilient to errors during device discovery.

Reported-by: Elric Fu <elricfu1@gmail.com>
Reported-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-15 11:08:53 -07:00
Michael S. Tsirkin
3ccc9372ed virtio_balloon: fix handling of PAGE_SIZE != 4k
As reported by David Gibson, current code handles PAGE_SIZE != 4k
completely wrong which can lead to guest memory corruption errors:

- page_to_balloon_pfn is wrong: e.g. on system with 64K page size
 it gives the same pfn value for 16 different pages.

- we also need to convert back to linux pfns when we free.

- for each linux page we need to tell host about multiple balloon
  pages, but code only adds one pfn to the array.

This patch fixes all that, tested with a 64k ppc64 kernel.

Reported-by: David Gibson <david@gibson.dropbear.id.au>
Tested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-04-15 11:51:06 +03:00
David Gibson
1a87228f5f virtio_balloon: Fix endian bug
Although virtio config space fields are usually in guest-native endian,
the spec for the virtio balloon device explicitly states that both fields
in its config space are little-endian.

However, the current virtio_balloon driver does not have a suitable endian
swap for the 'num_pages' field, although it does have one for the 'actual'
field.  This patch corrects the bug, adding sparse annotation while we're
at it.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-04-15 11:51:05 +03:00
Linus Torvalds
a1c0cad352 fbdev fixes for 3.4
It includes:
 - a compile fix for au1*fb
 - a fix to make kyrofb usable on x86_64
 - a fix for uvesafb to prevent an oops due to NX-protection
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Merge tag 'fbdev-fixes-for-3.4-1' of git://github.com/schandinat/linux-2.6

Pull fbdev fixes from Florian Tobias Schandinat:
 - a compile fix for au1*fb
 - a fix to make kyrofb usable on x86_64
 - a fix for uvesafb to prevent an oops due to NX-protection

 "The fix for kyrofb is a bit large but it's just replacing "unsigned
  long" by "u32" for 64 bit compatibility."

* tag 'fbdev-fixes-for-3.4-1' of git://github.com/schandinat/linux-2.6:
  video:uvesafb: Fix oops that uvesafb try to execute NX-protected page
  fbdev: fix au1*fb builds
  kyrofb: fix on x86_64
2012-04-13 19:42:56 -07:00
Linus Torvalds
c104f1fa1e Merge branch 'for-3.4/drivers' of git://git.kernel.dk/linux-block
Pull block driver bits from Jens Axboe:

 - A series of fixes for mtip32xx.  Most from Asai at Micron, but also
   one from Greg, getting rid of the dependency on PCIE_HOTPLUG.

 - A few bug fixes for xen-blkfront, and blkback.

 - A virtio-blk fix for Vivek, making resize actually work.

 - Two fixes from Stephen, making larger transfers possible on cciss.
   This is needed for tape drive support.

* 'for-3.4/drivers' of git://git.kernel.dk/linux-block:
  block: mtip32xx: remove HOTPLUG_PCI_PCIE dependancy
  mtip32xx: dump tagmap on failure
  mtip32xx: fix handling of commands in various scenarios
  mtip32xx: Shorten macro names
  mtip32xx: misc changes
  mtip32xx: Add new sysfs entry 'status'
  mtip32xx: make setting comp_time as common
  mtip32xx: Add new bitwise flag 'dd_flag'
  mtip32xx: fix error handling in mtip_init()
  virtio-blk: Call revalidate_disk() upon online disk resize
  xen/blkback: Make optional features be really optional.
  xen/blkback: Squash the discard support for 'file' and 'phy' type.
  mtip32xx: fix incorrect value set for drv_cleanup_done, and re-initialize and start port in mtip_restart_port()
  cciss: Fix scsi tape io with more than 255 scatter gather elements
  cciss: Initialize scsi host max_sectors for tape drive support
  xen-blkfront: make blkif_io_lock spinlock per-device
  xen/blkfront: don't put bdev right after getting it
  xen-blkfront: use bitmap_set() and bitmap_clear()
  xen/blkback: Enable blkback on HVM guests
  xen/blkback: use grant-table.c hypercall wrappers
2012-04-13 18:45:13 -07:00
Kevin Hilman
2d59dcfb54 cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS
The OMAP driver needs a 'depends on ARCH_OMAP2PLUS' since it only
builds for OMAP2+ platforms.

This 'depends on' was in the original patch from Russell King, but was
erroneously removed by me when making this option user-selectable in
commit b09db45c (cpufreq: OMAP driver depends CPUfreq tables.)  This
patch remedies that.

Apologies to Russell King for breaking his originally working patch.

Also, thanks to Grazvydas Ignotas for reporting the same problem.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-13 17:57:40 -07:00
Linus Torvalds
6e1173399d hwmon patches for 3.4-rc3
Fix build warnings in four drivers
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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon patches from Guenter Roeck:
 "Fix build warnings in four drivers"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (pmbus_core) Fix compiler warning
  hwmon: (smsc47m1) Fix compiler warning
  hwmon: (acpi_power_meter) Fix compiler warning seen in some configurations
  hwmon: (smsc47b397) Fix compiler warning
2012-04-13 12:19:41 -07:00
Linus Torvalds
461c14917e GPIO bug fixes on top of v3.4-rc2
Miscellaneous bug fixes to GPIO drivers and for a corner case in the
 gpio device tree parsing code.
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull GPIO bug fixes from Grant Likely:
 "Miscellaneous bug fixes to GPIO drivers and for a corner case in the
  gpio device tree parsing code."

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  gpio/exynos: Fix compiler warning in gpio-samsung.c file
  gpio: Fix range check in of_gpio_simple_xlate()
  gpio: Fix uninitialized variable bit in adp5588_irq_handler
  gpio/sodaville: Convert sodaville driver to new irqdomain API
2012-04-13 12:18:20 -07:00
Linus Torvalds
cf7d8a5550 SPI bug fixes on top of v3.4-rc2
Miscellaneous driver bug fixes.  No major changes in this branch.
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Merge tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull SPI bug fixes from Grant Likely:
 "Miscellaneous driver bug fixes.  No major changes in this branch."

* tag 'spi-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  spi/imx: prevent NULL pointer dereference in spi_imx_probe()
  spi/imx: mark base member in spi_imx_data as __iomem
  spi/mpc83xx: fix NULL pdata dereference bug
  spi/davinci: Fix DMA API usage in davinci
  spi/pL022: include types.h to remove compilation warnings
2012-04-13 12:17:45 -07:00
David Brown
e89c0e4377 video: msm: Fix section mismatches in mddi.c
The change
    commit 461cbe77d0
    Author: Gregory Bean <gbean@codeaurora.org>
    Date:   Wed Jul 28 10:22:13 2010 -0700

        video: msm: Fix section mismatch in mddi.c.

fixes a section mismatch between the board file and the driver's probe
function, however, it misses the additional mismatches between the
probe function and some routines it calls.  Fix these up as well.

Signed-off-by: David Brown <davidb@codeaurora.org>
2012-04-13 10:23:17 -07:00
Mark Brown
1e45860f54 ARM: 7366/3: amba: Remove AMBA level regulator support
The AMBA bus regulator support is being used to model on/off switches
for power domains which isn't terribly idiomatic for modern kernels with
the generic power domain code and creates integration problems on platforms
which don't use regulators for their power domains as it's hard to tell
the difference between a regulator that is needed but failed to be provided
and one that isn't supposed to be there (though DT does make that easier).

Platforms that wish to use the regulator API to manage their power domains
can indirect via the power domain interface.

This feature is only used with the vape supply of the db8500 PRCMU
driver which supplies the UARTs and MMC controllers, none of which have
support for managing vcore at runtime in mainline (only pl022 SPI
controller does).  Update that supply to have an always_on constraint
until the power domain support for the system is updated so that it is
enabled for these users, this is likely to have no impact on practical
systems as probably at least one of these devices will be active and
cause AMBA to hold the supply on anyway.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-13 14:04:08 +01:00
Linus Torvalds
4166fb6459 Add a fix for a bug hit by Alexey Shvetsov in ib_srtp that hits on
non-mlx4 hardware.
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Merge tag 'srpt-srq-type' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband fix from Roland Dreier:
 "Add a fix for a bug hit by Alexey Shvetsov in ib_srtp that hits on
  non-mlx4 hardware."

* tag 'srpt-srq-type' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/srpt: Set srq_type to IB_SRQT_BASIC
2012-04-12 18:51:32 -07:00
Linus Torvalds
7c427f4550 USB fixes for 3.4-rc2
Here are a number of fixes for the USB core and drivers for 3.4-rc2
 
 Lots of tiny xhci fixes here, a few usb-serial driver fixes and new device ids,
 and a smattering of other minor fixes in different USB drivers.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of fixes for the USB core and drivers for 3.4-rc2

  Lots of tiny xhci fixes here, a few usb-serial driver fixes and new
  device ids, and a smattering of other minor fixes in different USB
  drivers.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'usb-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (30 commits)
  USB: update usbtmc api documentation
  xHCI: Correct the #define XHCI_LEGACY_DISABLE_SMI
  xHCI: use gfp flags from caller instead of GFP_ATOMIC
  xHCI: add XHCI_RESET_ON_RESUME quirk for VIA xHCI host
  USB: fix bug of device descriptor got from superspeed device
  xhci: Fix register save/restore order.
  xhci: Restore event ring dequeue pointer on resume.
  xhci: Don't write zeroed pointers to xHC registers.
  xhci: Warn when hosts don't halt.
  xhci: don't re-enable IE constantly
  usb: xhci: fix section mismatch in linux-next
  xHCI: correct to print the true HSEE of USBCMD
  USB: serial: fix race between probe and open
  UHCI: hub_status_data should indicate if ports are resuming
  EHCI: keep track of ports being resumed and indicate in hub_status_data
  USB: fix race between root-hub suspend and remote wakeup
  USB: sierra: add support for Sierra Wireless MC7710
  USB: ftdi_sio: fix race condition in TIOCMIWAIT, and abort of TIOCMIWAIT when the device is removed
  USB: ftdi_sio: fix status line change handling for TIOCMIWAIT and TIOCGICOUNT
  USB: don't ignore suspend errors for root hubs
  ...
2012-04-12 15:37:21 -07:00
Linus Torvalds
f4f9c1ac78 tty and serial fixes for 3.4-rc2
Here are some tty and serial fixes for 3.4-rc2.
 
 Most important here is the pl011 fix, which has been reported by about
 100 different people, which means more people use it than I expected :)
 
 There are also some 8250 driver reverts due to some problems reported by
 them.  And other minor fixes as well.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty and serial fixes from Greg KH:
 "Here are some tty and serial fixes for 3.4-rc2.

  Most important here is the pl011 fix, which has been reported by about
  100 different people, which means more people use it than I expected
  :)

  There are also some 8250 driver reverts due to some problems reported
  by them.  And other minor fixes as well.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'tty-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  pch_uart: Add Kontron COMe-mTT10 uart clock quirk
  pch_uart: Fix MSI setting issue
  serial/8250_pci: add a "force background timer" flag and use it for the "kt" serial port
  Revert "serial/8250_pci: setup-quirk workaround for the kt serial controller"
  Revert "serial/8250_pci: init-quirk msi support for kt serial controller"
  tty/serial/omap: console can only be built-in
  serial: samsung: fix omission initialize ulcon in reset port fn()
  printk(): add KERN_CONT where needed in hpet and vt code
  tty/serial: atmel_serial: fix RS485 half-duplex problem
  tty: serial: altera_uart: Check for NULL platform_data in probe.
  isdn/gigaset: use gig_dbg() for debugging output
  omap-serial: Fix the error handling in the omap_serial probe
  serial: PL011: move interrupt clearing
2012-04-12 15:36:33 -07:00
Linus Torvalds
3dbc35a339 Staging tree fixes for 3.4-rc2
Here are a number of bugfixes for the drivers/staging/ portion of the kernel
 that have been reported recently.
 Nothing major here, with maybe the exception of the ramster code can now be
 built so it is enabled in the build again, and lots of memory leaks that people
 like to have fixed on their systems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging tree fixes from Greg KH:
 "Here are a number of bugfixes for the drivers/staging/ portion of the
  kernel that have been reported recently.

  Nothing major here, with maybe the exception of the ramster code can
  now be built so it is enabled in the build again, and lots of memory
  leaks that people like to have fixed on their systems.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'staging-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: android: fix mem leaks in __persistent_ram_init()
  staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl()
  staging: iio: hmc5843: Fix crash in probe function.
  staging/xgifb: fix display on XGI Volari Z11m cards
  Staging: android: timed_gpio: Fix resource leak in timed_gpio_probe error paths
  android: make persistent_ram based drivers depend on HAVE_MEMBLOCK
  staging: iio: ak8975: Remove i2c client data corruption
  staging: drm/omap: move where DMM driver is registered
  staging: zsmalloc: fix memory leak
  Staging: rts_pstor: off by one in for loop
  staging: ozwpan: Added new maintainer for ozwpan
  staging:rts_pstor:Avoid "Bad target number" message when probing driver
  staging:rts_pstor:Fix possible panic by NULL pointer dereference
  Staging: vt6655-6: check keysize before memcpy()
  staging/media/as102: Don't call release_firmware() on uninitialized variable
  staging:iio:core add missing increment of loop index in iio_map_array_unregister()
  staging: ramster: unbreak my heart
  staging/vme: Fix module parameters
  staging: sep: Fix sign of error
2012-04-12 15:35:12 -07:00
Linus Torvalds
f5ad501006 Driver core and kobject fixes for 3.4-rc2
Here are some minor fixes for the driver core and kobjects that people have
 reported recently.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and kobject fixes from Greg KH:
 "Here are some minor fixes for the driver core and kobjects that people
  have reported recently.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'driver-core-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kobject: provide more diagnostic info for kobject_add_internal() failures
  sysfs: handle 'parent deleted before child added'
  sysfs: Prevent crash on unset sysfs group attributes
  sysfs: Update the name hash for an entry after changing the namespace
  drivers/base: fix compiler warning in SoC export driver - idr should be ida
  drivers/base: Remove unneeded spin_lock_init call for soc_lock
2012-04-12 15:34:33 -07:00