10 years agoblock: Stop using byte offsets
Martin K. Petersen [Mon, 11 Jan 2010 08:21:51 +0000]
block: Stop using byte offsets

All callers of the stacking functions use 512-byte sector units rather
than byte offsets.  Simplify the code so the stacking functions take
sectors when specifying data offsets.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: removed unused as_io_context
Kirill Afonshin [Fri, 8 Jan 2010 19:09:59 +0000]
block: removed unused as_io_context

It isn't used anymore, since AS was deleted.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoDM: Fix device mapper topology stacking
Martin K. Petersen [Mon, 11 Jan 2010 08:21:50 +0000]
DM: Fix device mapper topology stacking

Make DM use bdev_stack_limits() function so that partition offsets get
taken into account when calculating alignment.  Clarify stacking
warnings.

Also remove obsolete clearing of final alignment_offset and misalignment
flag.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: Alasdair G. Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: bdev_stack_limits wrapper
Martin K. Petersen [Mon, 11 Jan 2010 08:21:49 +0000]
block: bdev_stack_limits wrapper

DM does not want to know about partition offsets.  Add a partition-aware
wrapper that DM can use when stacking block devices.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Fix discard alignment calculation and printing
Martin K. Petersen [Mon, 11 Jan 2010 08:21:48 +0000]
block: Fix discard alignment calculation and printing

Discard alignment reporting for partitions was incorrect.  Update to
match the algorithm used elsewhere.

The alignment can be negative (misaligned).  Fix format string
accordingly.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Correct handling of bottom device misaligment
Martin K. Petersen [Mon, 11 Jan 2010 08:21:47 +0000]
block: Correct handling of bottom device misaligment

The top device misalignment flag would not be set if the added bottom
device was already misaligned as opposed to causing a stacking failure.

Also massage the reporting so that an error is only returned if adding
the bottom device caused the misalignment.  I.e. don't return an error
if the top is already flagged as misaligned.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'for-jens' of git://git.drbd.org/linux-2.6-drbd into for-linus
Jens Axboe [Thu, 31 Dec 2009 09:00:27 +0000]
Merge branch 'for-jens' of git://git.drbd.org/linux-2.6-drbd into for-linus

10 years agodrbd: Silenced an assert that could triggered after changing write ordering method
Philipp Reisner [Tue, 29 Dec 2009 14:56:01 +0000]
drbd: Silenced an assert that could triggered after changing write ordering method

Immediately after changing the write ordering method, the epoch can already
be finished at this point.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

10 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Thu, 31 Dec 2009 00:00:24 +0000]
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: introduce kernel parameter acpi_sleep=sci_force_enable
  ACPI: WMI: Survive BIOS with duplicate GUIDs
  dell-wmi - fix condition to abort driver loading
  wmi: check find_guid() return value to prevent oops
  dell-wmi, hp-wmi, msi-wmi: check wmi_get_event_data() return value
  ACPI: hp-wmi, msi-wmi: clarify that wmi_install_notify_handler() returns an acpi_status
  dell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should
  ACPI video: correct error-handling code
  ACPI video: no warning message if "acpi_backlight=vendor" is used
  ACPI: fix ACPI=n allmodconfig build
  thinkpad-acpi: improve Kconfig help text
  thinkpad-acpi: update volume subdriver documentation
  thinkpad-acpi: make volume subdriver optional
  thinkpad-acpi: don't fail to load the entire module due to ALSA problems
  thinkpad-acpi: don't take the first ALSA slot by default

10 years agoMerge branch 'resume-sci-force-bootparam' into release
Len Brown [Wed, 30 Dec 2009 23:32:32 +0000]
Merge branch 'resume-sci-force-bootparam' into release

10 years agoACPI: introduce kernel parameter acpi_sleep=sci_force_enable
Zhang Rui [Wed, 30 Dec 2009 07:36:42 +0000]
ACPI: introduce kernel parameter acpi_sleep=sci_force_enable

Introduce kernel parameter acpi_sleep=sci_force_enable

some laptop requires SCI_EN being set directly on resume,
or else they hung somewhere in the resume code path.

We already have a blacklist for these laptops but we still need
this option, especially when debugging some suspend/resume problems,
in case there are systems that need this workaround and are not yet
in the blacklist.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
Linus Torvalds [Wed, 30 Dec 2009 21:46:29 +0000]
Merge branch 'fixes' of git://git./linux/kernel/git/djbw/async_tx

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  drivers/dma: Correct use after free
  drivers/dma: drop unnecesary memset
  ioat2,3: put channel hardware in known state at init
  async_tx: expand async raid6 test to cover ioatdma corner case
  ioat3: fix p-disabled q-continuation
  sh: fix DMA driver's descriptor chaining and cookie assignment
  dma: at_hdmac: correct incompatible type for argument 1 of 'spin_lock_bh'

10 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Wed, 30 Dec 2009 21:25:56 +0000]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Patch up how we claim metadata blocks for quota purposes
  ext4: Ensure zeroout blocks have no dirty metadata
  ext4: return correct wbc.nr_to_write in ext4_da_writepages
  ext4: Update documentation to correct the inode_readahead_blks option name
  jbd2: don't use __GFP_NOFAIL in journal_init_common()
  ext4: flush delalloc blocks when space is low
  fs-writeback: Add helper function to start writeback if idle
  ext4: Eliminate potential double free on error path
  ext4: fix unsigned long long printk warning in super.c
  ext4, jbd2: Add barriers for file systems with exernal journals
  ext4: replace BUG() with return -EIO in ext4_ext_get_blocks
  ext4: add module aliases for ext2 and ext3
  ext4: Don't ask about supporting ext2/3 in ext4 if ext4 is not configured
  ext4: remove unused #include <linux/version.h>

10 years agoMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
Linus Torvalds [Wed, 30 Dec 2009 21:14:25 +0000]
Merge branch 'slab/urgent' of git://git./linux/kernel/git/penberg/slab-2.6

* 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  SLAB: Fix lockdep annotation breakage

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Wed, 30 Dec 2009 21:13:24 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI/cardbus: Add a fixup hook and fix powerpc
  PCI: change PCI nomenclature in drivers/pci/ (non-comment changes)
  PCI: change PCI nomenclature in drivers/pci/ (comment changes)
  PCI: fix section mismatch on update_res()
  PCI: add Intel 82599 Virtual Function specific reset method
  PCI: add Intel USB specific reset method
  PCI: support device-specific reset methods
  PCI: Handle case when no pci device can provide cache line size hint
  PCI/PM: Propagate wake-up enable for PCIe devices too
  vgaarbiter: fix a typo in the vgaarbiter Documentation

10 years agoMerge branch 'kvm-updates/2.6.33' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 30 Dec 2009 20:56:17 +0000]
Merge branch 'kvm-updates/2.6.33' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.33' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: get rid of kvm_create_vm() unused label warning on s390
  KVM: powerpc: Fix mtsrin in book3s_64 mmu
  KVM: ia64: fix build breakage due to host spinlock change
  KVM: x86: Extend KVM_SET_VCPU_EVENTS with selective updates
  KVM: LAPIC: make sure IRR bitmap is scanned after vm load
  KVM: Fix possible circular locking in kvm_vm_ioctl_assign_device()
  KVM: MMU: remove prefault from invlpg handler

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 30 Dec 2009 20:55:10 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Fix Oops at reloading beep devices
  ALSA: hda - Don't cache beep controls
  ALSA: Fix a typo in Procfile.txt
  ALSA: sound/arm: Fix build failure caused by missing struct aaci definition
  ALSA: hda - use snd_hda_jack_detect() again in patch_sigmatel.c
  ALSA: hda - Disable tigger at pin-sensing on AD codecs
  ALSA: hda - HDMI sticky stream tag support
  ALSA: Fix indentation in pcm_native.c

10 years agokfifo: Fix typo in comment
Rolf Eike Beer [Sat, 26 Dec 2009 16:58:11 +0000]
kfifo: Fix typo in comment

It's DECLARE_KFIFO, not DECLARED_KFIFO.

Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 30 Dec 2009 20:43:21 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: blk_rq_err_sectors cleanup
  block: Honor the gfp_mask for alloc_page() in blkdev_issue_discard()
  block: Fix incorrect alignment offset reporting and update documentation
  cfq-iosched: don't regard requests with long distance as close
  aoe: switch to the new bio_flush_dcache_pages() interface
  drivers/block/mg_disk.c: use resource_size()
  drivers/block/DAC960.c: use DAC960_V2_Controller
  block: Fix topology stacking for data and discard alignment
  drbd: remove unused #include <linux/version.h>
  drbd: remove duplicated #include
  drbd: Fix test of unsigned in _drbd_fault_random()
  drbd: Constify struct file_operations
  cfq-iosched: Remove prio_change logic for workload selection
  cfq-iosched: Get rid of nr_groups
  cfq-iosched: Remove the check for same cfq group from allow_merge
  drbd: fix test of unsigned in _drbd_fault_random()
  block: remove Documentation/block/as-iosched.txt

10 years agodell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should follo...
Len Brown [Wed, 30 Dec 2009 06:21:42 +0000]
dell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should follow 0/-E convention

wmi_install_notify_handler() returns an acpi_error,
but dell_wmi_init() needs return a -errno style error.

Signed-off-by: Len Brown <len.brown@intel.com>
Tested-by: Paul Rolland <rol@as2917.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agowmi: check find_guid() return value to prevent oops
Paul Rolland [Wed, 30 Dec 2009 06:19:12 +0000]
wmi: check find_guid() return value to prevent oops

Signed-off-by: rol@as2917.net <Paul Rolland>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Wed, 30 Dec 2009 20:39:19 +0000]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: allow a resync that is waiting for other resync to complete, to be aborted.
  md: remove unnecessary code from do_md_run
  md: make recovery started by do_md_run() visible via sync_action
  md: fix small irregularity with start_ro module parameter
  md: Fix unfortunate interaction with evms

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Wed, 30 Dec 2009 20:37:35 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (74 commits)
  Revert "b43: Enforce DMA descriptor memory constraints"
  iwmc3200wifi: fix array out-of-boundary access
  wl1251: timeout one too soon in wl1251_boot_run_firmware()
  mac80211: fix propagation of failed hardware reconfigurations
  mac80211: fix race with suspend and dynamic_ps_disable_work
  ath9k: fix missed error codes in the tx status check
  ath9k: wake hardware during AMPDU TX actions
  ath9k: wake hardware for interface IBSS/AP/Mesh removal
  ath9k: fix suspend by waking device prior to stop
  cfg80211: fix error path in cfg80211_wext_siwscan
  wl1271_cmd.c: cleanup char => u8
  iwlwifi: Storage class should be before const qualifier
  ath9k: Storage class should be before const qualifier
  cfg80211: fix race between deauth and assoc response
  wireless: remove remaining qual code
  rt2x00: Add USB ID for Linksys WUSB 600N rev 2.
  ath5k: fix SWI calibration interrupt storm
  mac80211: fix ibss join with fixed-bssid
  libertas: Remove carrier signaling from the scan code
  orinoco: fix GFP_KERNEL in orinoco_set_key with interrupts disabled
  ...

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Wed, 30 Dec 2009 20:36:58 +0000]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  hwrng: core - Fix double unlock in rng_dev_read

10 years agogeneric_permission: MAY_OPEN is not write access
Serge E. Hallyn [Tue, 29 Dec 2009 20:50:19 +0000]
generic_permission: MAY_OPEN is not write access

generic_permission was refusing CAP_DAC_READ_SEARCH-enabled
processes from opening DAC-protected files read-only, because
do_filp_open adds MAY_OPEN to the open mask.

Ignore MAY_OPEN.  After this patch, CAP_DAC_READ_SEARCH is
again sufficient to open(fname, O_RDONLY) on a file to which
DAC otherwise refuses us read permission.

Reported-by: Mike Kazantsev <mk.fraggod@gmail.com>
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Mike Kazantsev <mk.fraggod@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agox86_64 SGI UV: Fix writes to led registers on remote uv hubs.
Mike Travis [Mon, 28 Dec 2009 21:28:25 +0000]
x86_64 SGI UV: Fix writes to led registers on remote uv hubs.

The wrong address was being used to write the SCIR led regs on remote
hubs.  Also, there was an inconsistency between how BIOS and the kernel
indexed these regs.  Standardize on using the lower 6 bits of the APIC
ID as the index.

This patch fixes the problem of writing to an errant address to a
cpu # >= 64.

Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Jack Steiner <steiner@sgi.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agomm: move sys_mmap_pgoff from util.c
Hugh Dickins [Wed, 30 Dec 2009 20:17:34 +0000]
mm: move sys_mmap_pgoff from util.c

Move sys_mmap_pgoff() from mm/util.c to mm/mmap.c and mm/nommu.c,
where we'd expect to find such code: especially now that it contains
the MAP_HUGETLB handling.  Revert mm/util.c to how it was in 2.6.32.

This patch just ignores MAP_HUGETLB in the nommu case, as in 2.6.32,
whereas 2.6.33-rc2 reported -ENOSYS.  Perhaps validate_mmap_request()
should reject it with -EINVAL?  Add that later if necessary.

Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agolibsrp: fix compile failure
James Bottomley [Wed, 30 Dec 2009 19:21:06 +0000]
libsrp: fix compile failure

commit 45465487897a1c6d508b14b904dc5777f7ec7e04 ("kfifo: move struct
kfifo in place") caused a compile failure in ibmvscsitgt.c because it
changed a pointer to kfifo in the libsrp.h structure to a direct
inclusion without including <linux/kfifo.h>.

The fix is simple, just add the include, but how did this happen? This
change, introduced at -rc2, hardly looks like a bug fix, and it clearly
didn't go through linux-next, which would have picked up this compile
failure (it only occurs on ppc because of the ibm virtual scsi target).

[ Apparently all of -mm wasn't in linux-next.. ]

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoext4: Patch up how we claim metadata blocks for quota purposes
Theodore Ts'o [Wed, 30 Dec 2009 19:20:45 +0000]
ext4: Patch up how we claim metadata blocks for quota purposes

As reported in Kernel Bugzilla #14936, commit d21cd8f triggered a BUG
in the function ext4_da_update_reserve_space() found in
fs/ext4/inode.c.  The root cause of this BUG() was caused by the fact
that ext4_calc_metadata_amount() can severely over-estimate how many
metadata blocks will be needed, especially when using direct
block-mapped files.

In addition, it can also badly *under* estimate how much space is
needed, since ext4_calc_metadata_amount() assumes that the blocks are
contiguous, and this is not always true.  If the application is
writing blocks to a sparse file, the number of metadata blocks
necessary can be severly underestimated by the functions
ext4_da_reserve_space(), ext4_da_update_reserve_space() and
ext4_da_release_space().  This was the cause of the dq_claim_space
reports found on kerneloops.org.

Unfortunately, doing this right means that we need to massively
over-estimate the amount of free space needed.  So in some cases we
may need to force the inode to be written to disk asynchronously in
to avoid spurious quota failures.

http://bugzilla.kernel.org/show_bug.cgi?id=14936

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

10 years agoMerge branch 'video-error-case' into release
Len Brown [Wed, 30 Dec 2009 07:51:38 +0000]
Merge branch 'video-error-case' into release

10 years agoMerge branch 'bugzilla-13671' into release
Len Brown [Wed, 30 Dec 2009 07:51:31 +0000]
Merge branch 'bugzilla-13671' into release

10 years agoMerge branch 'thinkpad' into release
Len Brown [Wed, 30 Dec 2009 07:51:05 +0000]
Merge branch 'thinkpad' into release

10 years agoMerge branch 'wmi' into release
Len Brown [Wed, 30 Dec 2009 07:51:01 +0000]
Merge branch 'wmi' into release

10 years agoACPI: WMI: Survive BIOS with duplicate GUIDs
Carlos Corbacho [Sat, 26 Dec 2009 19:14:59 +0000]
ACPI: WMI: Survive BIOS with duplicate GUIDs

It would appear that in BIOS's with nVidia hooks, the GUID
05901221-D566-11D1-B2F0-00A0C9062910 is duplicated. For now, the simplest
solution is to just ignore any duplicate GUIDs. These particular hooks are not
currently supported/ used in the kernel, so whoever does that can figure out
what the 'right' solution should be (if there's a better one).

http://bugzilla.kernel.org/show_bug.cgi?id=14846

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-by: Oldřich Jedlička <oldium.pro@seznam.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agodell-wmi - fix condition to abort driver loading
Dmitry Torokhov [Fri, 25 Dec 2009 19:49:35 +0000]
dell-wmi - fix condition to abort driver loading

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

The commit 1fdd407f4e3f2ecb453954cbebb6c22491c61853 incorrectly made driver
abort loading when known GUID is present when it should have done exactly
the opposite.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agowmi: check find_guid() return value to prevent oops
Paul Rolland [Wed, 30 Dec 2009 06:07:40 +0000]
wmi: check find_guid() return value to prevent oops

Signed-off-by: Paul Rolland <rol@as2917.net>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agodell-wmi, hp-wmi, msi-wmi: check wmi_get_event_data() return value
Len Brown [Sun, 27 Dec 2009 04:02:24 +0000]
dell-wmi, hp-wmi, msi-wmi: check wmi_get_event_data() return value

When acpi_evaluate_object() is passed ACPI_ALLOCATE_BUFFER,
the caller must kfree the returned buffer if AE_OK is returned.

The callers of wmi_get_event_data() pass ACPI_ALLOCATE_BUFFER,
and thus must check its return value before accessing
or kfree() on the buffer.

Signed-off-by: Len Brown <len.brown@intel.com>

10 years agoACPI: hp-wmi, msi-wmi: clarify that wmi_install_notify_handler() returns an acpi_status
Len Brown [Sun, 27 Dec 2009 03:04:03 +0000]
ACPI: hp-wmi, msi-wmi: clarify that wmi_install_notify_handler() returns an acpi_status

Emphasize that that wmi_install_notify_handler() returns an acpi_status
rather than -errno by by testing ACPI_SUCCESS(), ACPI_FAILURE().

No functional change in this patch, but this confusion caused a bug in dell-wmi.

Signed-off-by: Len Brown <len.brown@intel.com>

10 years agodell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should
Len Brown [Sun, 27 Dec 2009 02:51:38 +0000]
dell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should
follow 0/-E convention

wmi_install_notify_handler() returns an acpi_error,
but dell_wmi_init() needs return a -errno style error.

Tested-by: Paul Rolland <rol@as2917.net>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agoblock: blk_rq_err_sectors cleanup
Gui Jianfeng [Wed, 30 Dec 2009 07:41:07 +0000]
block: blk_rq_err_sectors cleanup

blk_rq_err_sectors() seems useless, get rid of it.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoACPI video: correct error-handling code
Zhang Rui [Wed, 29 Jul 2009 00:53:29 +0000]
ACPI video: correct error-handling code

backlight_device_register may return an ERR_PTR
value rather than a valid pointer.

Problem found by Julia Lawall, properly fixed by Zhang Rui.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agoACPI video: no warning message if "acpi_backlight=vendor" is used
Zhang Rui [Mon, 13 Jul 2009 02:33:24 +0000]
ACPI video: no warning message if "acpi_backlight=vendor" is used

AML code always sends notifications to ACPI video device,
even if we disable the ACPI backlight control by using
boot option "acpi_backlight=vendor".

In this case we should not print any warning message.
http://bugzilla.kernel.org/show_bug.cgi?id=13671#c14

Sigend-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agoACPI: fix ACPI=n allmodconfig build
Ingo Molnar [Thu, 17 Dec 2009 07:50:25 +0000]
ACPI: fix ACPI=n allmodconfig build

Today's -tip failed to build because commit
9e368fa011d4e0aa050db348d69514900520e40b ("ipmi: add PNP discovery (ACPI
namespace via PNPACPI)") from today's upstream kernel causes the following
build failure on x86, for CONFIG_ACPI=n && CONFIG_IPMI_SI=y:

 drivers/char/ipmi/ipmi_si_intf.c:3208: error: 'ipmi_pnp_driver' undeclared (first use in this function)
 drivers/char/ipmi/ipmi_si_intf.c:3208: error: (Each undeclared identifier is reported only once
 drivers/char/ipmi/ipmi_si_intf.c:3208: error: for each function it appears in.)
 drivers/char/ipmi/ipmi_si_intf.c:3334: error: 'ipmi_pnp_driver' undeclared (first use in this function)

The reason is that the ipmi_pnp_driver depends on ACPI facilities and is only
made available under ACPI - while the registration and unregistration is made
dependent on CONFIG_PNP:

 #ifdef CONFIG_PNP
  pnp_register_driver(&ipmi_pnp_driver);
 #endif

The solution is to only register this driver under ACPI. (Also, the CONFIG_PNP
dependency is not needed because pnp_register_driver() is stubbed out in the
!CONFIG_PNP case.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Myron Stowe <myron.stowe@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agoext4: Ensure zeroout blocks have no dirty metadata
Aneesh Kumar K.V [Wed, 30 Dec 2009 04:39:06 +0000]
ext4: Ensure zeroout blocks have no dirty metadata

This fixes a bug (found by Curt Wohlgemuth) in which new blocks
returned from an extent created with ext4_ext_zeroout() can have dirty
metadata still associated with them.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

10 years agomd: allow a resync that is waiting for other resync to complete, to be aborted.
NeilBrown [Wed, 30 Dec 2009 04:25:23 +0000]
md: allow a resync that is waiting for other resync to complete, to be aborted.

If two arrays share a device, then they will not both resync at the
same time.  One will wait for the other to complete.
While waiting, the MD_RECOVERY_INTR flag is not checked so a device
failure, which would make the resync pointless, does not cause the
resync to abort, so the failed device cannot be removed (as it cannot
be remove while a resync is happening).

So add a test for MD_RECOVERY_INTR.

Reported-by: Brett Russ <bruss@netezza.com>
Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd: remove unnecessary code from do_md_run
NeilBrown [Wed, 30 Dec 2009 04:19:08 +0000]
md: remove unnecessary code from do_md_run

Since commit dfc7064500061677720fa26352963c772d3ebe6b,
->hot_remove_disks has not removed non-failed devices from
an array until recovery is no longer possible.
So the code in do_md_run to get around the fact that
md_check_recovery (which calls ->hot_remove_disks) would
remove partially-in-sync devices is no longer needed.

So remove it.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd: make recovery started by do_md_run() visible via sync_action
Dan Williams [Tue, 22 Dec 2009 01:18:36 +0000]
md: make recovery started by do_md_run() visible via sync_action

By default md_do_sync() will perform recovery if no other actions are
specified.  However, action_show() relies on MD_RECOVERY_RECOVER to be
set otherwise it returns 'idle'.  So, add a missing set
MD_RECOVERY_RECOVER when starting recovery.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd: fix small irregularity with start_ro module parameter
NeilBrown [Wed, 30 Dec 2009 01:08:50 +0000]
md: fix small irregularity with start_ro module parameter

The start_ro modules parameter can be used to force arrays to be
started in 'auto-readonly' in which they are read-only until the first
write.  This ensures that no resync/recovery happens until something
else writes to the device.  This is important for resume-from-disk
off an md array.

However if an array is started 'readonly' (by writing 'readonly' to
the 'array_state' sysfs attribute) we want it to be really 'readonly',
not 'auto-readonly'.

So strengthen the condition to only set auto-readonly if the
array is not already read-only.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Wed, 30 Dec 2009 03:44:25 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

10 years agomd: Fix unfortunate interaction with evms
NeilBrown [Wed, 30 Dec 2009 01:08:49 +0000]
md: Fix unfortunate interaction with evms

evms configures md arrays by:
  open device
  send ioctl
  close device

for each different ioctl needed.
Since 2.6.29, the device can disappear after the 'close'
unless a significant configuration has happened to the device.
The change made by "SET_ARRAY_INFO" can too minor to stop the device
from disappearing, but important enough that losing the change is bad.

So: make sure SET_ARRAY_INFO sets mddev->ctime, and keep the device
active as long as ctime is non-zero (it gets zeroed with lots of other
things when the array is stopped).

This is suitable for -stable kernels since 2.6.29.

Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org

10 years agoRevert "b43: Enforce DMA descriptor memory constraints"
John W. Linville [Tue, 29 Dec 2009 19:07:42 +0000]
Revert "b43: Enforce DMA descriptor memory constraints"

This reverts commit 9bd568a50c446433038dec2a5186c5c57c3dbd23.

That commit is shown to cause allocation failures during initialization
on some machines.

http://bugzilla.kernel.org/show_bug.cgi?id=14844

Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agodrbd: Kconfig fix
Johannes Thoma [Tue, 29 Dec 2009 15:38:04 +0000]
drbd: Kconfig fix

!CONFIG_OPT evalues to FALSE if CONFIG_OPT='m'. Do not display the
"DRBD disabled..." message if the dependencies are compiled as module.

Signed-off-by: Johannes Thoma <johannes.thoma@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>

10 years agodrbd: Fix for a race between IO and a detach operation [Bugz 262]
Philipp Reisner [Mon, 28 Dec 2009 15:58:38 +0000]
drbd: Fix for a race between IO and a detach operation [Bugz 262]

In D_DISKLESS we do not hand out any new references to ldev (local_cnt)
therefore waiting until all previously handed out refereces got returned
is sufficient before actually freeing mdev->ldev.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

10 years agodrbd: Use drbd_crypto_is_hash() instead of an open coded check
Philipp Reisner [Mon, 28 Dec 2009 15:58:38 +0000]
drbd: Use drbd_crypto_is_hash() instead of an open coded check

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

10 years agoblock: Honor the gfp_mask for alloc_page() in blkdev_issue_discard()
OGAWA Hirofumi [Tue, 29 Dec 2009 07:53:54 +0000]
block: Honor the gfp_mask for alloc_page() in blkdev_issue_discard()

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: Fix incorrect alignment offset reporting and update documentation
Martin K. Petersen [Tue, 29 Dec 2009 07:35:35 +0000]
block: Fix incorrect alignment offset reporting and update documentation

queue_sector_alignment_offset returned the wrong value which caused
partitions to report an incorrect alignment_offset.  Since offset
alignment calculation is needed several places it has been split into a
separate helper function.  The topology stacking function has been
updated accordingly.

Furthermore, comments have been added to clarify how the stacking
function works.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Tested-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoiwmc3200wifi: fix array out-of-boundary access
Zhu Yi [Mon, 28 Dec 2009 06:23:11 +0000]
iwmc3200wifi: fix array out-of-boundary access

Allocate priv->rx_packets[IWM_RX_ID_HASH + 1] because the max array
index is IWM_RX_ID_HASH according to IWM_RX_ID_GET_HASH().

Cc: stable@kernel.org
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agowl1251: timeout one too soon in wl1251_boot_run_firmware()
Roel Kluin [Sat, 26 Dec 2009 19:31:59 +0000]
wl1251: timeout one too soon in wl1251_boot_run_firmware()

`loop' reaches INIT_LOOP + 1 after the loop. so if ACX_INTR_INIT_COMPLETE
occurs in the last iteration the write occurs but also the error out as if a
timeout occurred. This is probably very unlikely to ever occur.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agomac80211: fix propagation of failed hardware reconfigurations
Luis R. Rodriguez [Thu, 24 Dec 2009 20:38:22 +0000]
mac80211: fix propagation of failed hardware reconfigurations

mac80211 does not propagate failed hardware reconfiguration
requests. For suspend and resume this is important due to all
the possible issues that can come out of the suspend <-> resume
cycle. Not propagating the error means cfg80211 will assume
the resume for the device went through fine and mac80211 will
continue on trying to poke at the hardware, enable timers,
queue work, and so on for a device which is completley
unfunctional.

The least we can do is to propagate device start issues and
warn when this occurs upon resume. A side effect of this patch
is we also now propagate the start errors upon harware
reconfigurations (non-suspend), but this should also be desirable
anyway, there is not point in continuing to reconfigure a
device if mac80211 was unable to start the device.

For further details refer to the thread:

http://marc.info/?t=126151038700001&r=1&w=2

Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agomac80211: fix race with suspend and dynamic_ps_disable_work
Luis R. Rodriguez [Thu, 24 Dec 2009 20:26:09 +0000]
mac80211: fix race with suspend and dynamic_ps_disable_work

When mac80211 suspends it calls a driver's suspend callback
as a last step and after that the driver assumes no calls will
be made to it until we resume and its start callback is kicked.
If such calls are made, however, suspend can end up throwing
hardware in an unexpected state and making the device unusable
upon resume.

Fix this by preventing mac80211 to schedule dynamic_ps_disable_work
by checking for when mac80211 starts to suspend and starts
quiescing. Frames should be allowed to go through though as
that is part of the quiescing steps and we do not flush the
mac80211 workqueue since it was already done towards the
beginning of suspend cycle.

The other mac80211 issue will be hanled in the next patch.

For further details see refer to the thread:

http://marc.info/?t=126144866100001&r=1&w=2

Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath9k: fix missed error codes in the tx status check
Felix Fietkau [Thu, 24 Dec 2009 13:04:32 +0000]
ath9k: fix missed error codes in the tx status check

My previous change added in:

 commit 815833e7ecf0b9a017315cae6aef4d7cd9517681
    ath9k: fix tx status reporting

was not checking all possible tx error conditions. This could possibly
lead to throughput issues due to slow rate control adaption or missed
retransmissions of failed A-MPDU frames.

This patch adds a mask for all possible error conditions and uses it
in the xmit ok check.

Cc: stable@kernel.org
Reported-by: Björn Smedman <bjorn.smedman@venatech.se>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath9k: wake hardware during AMPDU TX actions
Luis R. Rodriguez [Thu, 24 Dec 2009 01:03:29 +0000]
ath9k: wake hardware during AMPDU TX actions

AMDPDU actions poke hardware for TX operation, as such
we want to turn hardware on for these actions. AMDPU RX operations
do not require hardware on as nothing is done in hardware for
those actions. Without this we cannot guarantee hardware has
been programmed correctly for each AMPDU TX action.

Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath9k: wake hardware for interface IBSS/AP/Mesh removal
Luis R. Rodriguez [Thu, 24 Dec 2009 01:03:28 +0000]
ath9k: wake hardware for interface IBSS/AP/Mesh removal

When we remove a IBSS/AP/Mesh interface we stop DMA
but to do this we should ensure hardware is on. Awaken
the device prior to these calls. This should ensure
DMA is stopped upon suspend and plain device removal.

Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath9k: fix suspend by waking device prior to stop
Sujith [Thu, 24 Dec 2009 01:03:27 +0000]
ath9k: fix suspend by waking device prior to stop

Ensure the device is awake prior to trying to tell hardware
to stop it. Impact of not doing this is we can likely leave
the device in an undefined state likely causing issues with
suspend and resume. This patch ensures harware is where it
should be prior to suspend.

Cc: stable@kernel.org
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agocfg80211: fix error path in cfg80211_wext_siwscan
Johannes Berg [Wed, 23 Dec 2009 14:33:35 +0000]
cfg80211: fix error path in cfg80211_wext_siwscan

If there's an invalid channel or SSID, the code leaks
the scan request. Always free the scan request, unless
it was successfully given to the driver.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agowl1271_cmd.c: cleanup char => u8
Dan Carpenter [Wed, 23 Dec 2009 13:23:19 +0000]
wl1271_cmd.c: cleanup char => u8

This is just a clean up and doesn't make a functional difference.  It keeps the
lint checkers happy.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoiwlwifi: Storage class should be before const qualifier
Tobias Klauser [Wed, 23 Dec 2009 13:18:11 +0000]
iwlwifi: Storage class should be before const qualifier

The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath9k: Storage class should be before const qualifier
Tobias Klauser [Wed, 23 Dec 2009 13:04:43 +0000]
ath9k: Storage class should be before const qualifier

The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agocfg80211: fix race between deauth and assoc response
Johannes Berg [Wed, 23 Dec 2009 12:12:05 +0000]
cfg80211: fix race between deauth and assoc response

Joseph Nahmias reported, in http://bugs.debian.org/562016,
that he was getting the following warning (with some log
around the issue):

  ath0: direct probe to AP 00:11:95:77:e0:b0 (try 1)
  ath0: direct probe responded
  ath0: authenticate with AP 00:11:95:77:e0:b0 (try 1)
  ath0: authenticated
  ath0: associate with AP 00:11:95:77:e0:b0 (try 1)
  ath0: deauthenticating from 00:11:95:77:e0:b0 by local choice (reason=3)
  ath0: direct probe to AP 00:11:95:77:e0:b0 (try 1)
  ath0: RX AssocResp from 00:11:95:77:e0:b0 (capab=0x421 status=0 aid=2)
  ath0: associated
  ------------[ cut here ]------------
  WARNING: at net/wireless/mlme.c:97 cfg80211_send_rx_assoc+0x14d/0x152 [cfg80211]()
  Hardware name: 7658CTO
  ...
  Pid: 761, comm: phy0 Not tainted 2.6.32-trunk-686 #1
  Call Trace:
   [<c1030a5d>] ? warn_slowpath_common+0x5e/0x8a
   [<c1030a93>] ? warn_slowpath_null+0xa/0xc
   [<f86cafc7>] ? cfg80211_send_rx_assoc+0x14d/0x152
  ...
  ath0: link becomes ready
  ath0: deauthenticating from 00:11:95:77:e0:b0 by local choice (reason=3)
  ath0: no IPv6 routers present
  ath0: link is not ready
  ath0: direct probe to AP 00:11:95:77:e0:b0 (try 1)
  ath0: direct probe responded
  ath0: authenticate with AP 00:11:95:77:e0:b0 (try 1)
  ath0: authenticated
  ath0: associate with AP 00:11:95:77:e0:b0 (try 1)
  ath0: RX ReassocResp from 00:11:95:77:e0:b0 (capab=0x421 status=0 aid=2)
  ath0: associated

It is not clear to me how the first "direct probe" here
happens, but this seems to be a race condition, if the
user requests to deauth after requesting assoc, but before
the assoc response is received. In that case, it may
happen that mac80211 tries to report the assoc success to
cfg80211, but gets blocked on the wdev lock that is held
because the user is requesting the deauth.

The result is that we run into a warning. This is mostly
harmless, but maybe cause an unexpected event to be sent
to userspace; we'd send an assoc success event although
userspace was no longer expecting that.

To fix this, remove the warning and check whether the
race happened and in that case abort processing.

Reported-by: Joseph Nahmias <joe@nahmias.net>
Cc: stable@kernel.org
Cc: 562016-quiet@bugs.debian.org
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agowireless: remove remaining qual code
Johannes Berg [Wed, 23 Dec 2009 12:12:04 +0000]
wireless: remove remaining qual code

This removes the remaining users of the rx status
'qual' field and the field itself.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agort2x00: Add USB ID for Linksys WUSB 600N rev 2.
Gertjan van Wingerde [Tue, 22 Dec 2009 23:03:21 +0000]
rt2x00: Add USB ID for Linksys WUSB 600N rev 2.

This is a rt2870 based device.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath5k: fix SWI calibration interrupt storm
Bob Copeland [Tue, 22 Dec 2009 03:26:48 +0000]
ath5k: fix SWI calibration interrupt storm

The calibration period is now invoked by triggering a software
interrupt from within the ISR by ath5k_hw_calibration_poll()
instead of via a timer.

However, the calibration interval isn't initialized before
interrupts are enabled, so we can have a situation where an
interrupt occurs before the interval is assigned, so the
interval is actually negative.  As a result, the ISR will
arm a software interrupt to schedule the tasklet, and then
rearm it when the SWI is processed, and so on, leading to a
softlockup at modprobe time.

Move the initialization order around so the calibration interval
is set before interrupts are active.  Another possible fix
is to schedule the tasklet directly from the poll routine,
but I think there are additional plans for the SWI.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agomac80211: fix ibss join with fixed-bssid
Felix Fietkau [Sun, 20 Dec 2009 18:07:09 +0000]
mac80211: fix ibss join with fixed-bssid

When fixed bssid is requested when joining an ibss network, incoming
beacons that match the configured bssid cause mac80211 to create new
sta entries, even before the ibss interface is in joined state.
When that happens, it fails to bring up the interface entirely, because
it checks for existing sta entries before joining.
This patch fixes this bug by refusing to create sta info entries before
the interface is fully operational.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agolibertas: Remove carrier signaling from the scan code
Samuel Ortiz [Fri, 18 Dec 2009 10:36:49 +0000]
libertas: Remove carrier signaling from the scan code

There is no reason to signal a carrier off when doing a 802.11 scan.

Cc: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoorinoco: fix GFP_KERNEL in orinoco_set_key with interrupts disabled
Andrey Borzenkov [Tue, 22 Dec 2009 18:38:44 +0000]
orinoco: fix GFP_KERNEL in orinoco_set_key with interrupts disabled

orinoco_set_key is called from two places both with interrupts disabled
(under orinoco_lock). Use GFP_ATOMIC instead of GFP_KERNEL. Fixes following
warning:

[   77.254109] WARNING: at /home/bor/src/linux-git/kernel/lockdep.c:2465 lockdep_trace_alloc+0x9a/0xa0()
[   77.254109] Hardware name: PORTEGE 4000
[   77.254109] Modules linked in: af_packet irnet ppp_generic slhc ircomm_tty ircomm binfmt_misc dm_mirror dm_region_hash dm_log dm_round_robin dm_multipath dm_mod loop nvram toshiba cryptomgr aead pcompress crypto_blkcipher michael_mic crypto_hash crypto_algapi orinoco_cs orinoco cfg80211 smsc_ircc2 pcmcia irda toshiba_acpi yenta_socket video i2c_ali1535 backlight rsrc_nonstatic ali_agp pcmcia_core psmouse output crc_ccitt i2c_core alim1535_wdt rfkill sg evdev ohci_hcd agpgart usbcore pata_ali libata reiserfs [last unloaded: scsi_wait_scan]
[   77.254109] Pid: 2296, comm: wpa_supplicant Not tainted 2.6.32-1avb #1
[   77.254109] Call Trace:
[   77.254109]  [<c011f0ad>] warn_slowpath_common+0x6d/0xa0
[   77.254109]  [<c014206a>] ? lockdep_trace_alloc+0x9a/0xa0
[   77.254109]  [<c014206a>] ? lockdep_trace_alloc+0x9a/0xa0
[   77.254109]  [<c011f0f5>] warn_slowpath_null+0x15/0x20
[   77.254109]  [<c014206a>] lockdep_trace_alloc+0x9a/0xa0
[   77.254109]  [<c018d296>] __kmalloc+0x36/0x130
[   77.254109]  [<dffcb6a8>] ? orinoco_set_key+0x48/0x1c0 [orinoco]
[   77.254109]  [<dffcb6a8>] orinoco_set_key+0x48/0x1c0 [orinoco]
[   77.254109]  [<dffcb9fc>] orinoco_ioctl_set_encodeext+0x1dc/0x2d0 [orinoco]
[   77.254109]  [<c035b117>] ioctl_standard_call+0x207/0x3b0
[   77.254109]  [<dffcb820>] ? orinoco_ioctl_set_encodeext+0x0/0x2d0 [orinoco]
[   77.254109]  [<c0307f1f>] ? rtnl_lock+0xf/0x20
[   77.254109]  [<c0307f1f>] ? rtnl_lock+0xf/0x20
[   77.254109]  [<c02fb115>] ? __dev_get_by_name+0x85/0xb0
[   77.254109]  [<c035b616>] wext_handle_ioctl+0x176/0x200
[   77.254109]  [<dffcb820>] ? orinoco_ioctl_set_encodeext+0x0/0x2d0 [orinoco]
[   77.254109]  [<c030020f>] dev_ioctl+0x6af/0x730
[   77.254109]  [<c02eec65>] ? move_addr_to_kernel+0x55/0x60
[   77.254109]  [<c02eed59>] ? sys_sendto+0xe9/0x130
[   77.254109]  [<c02ed77e>] sock_ioctl+0x7e/0x250
[   77.254109]  [<c02ed700>] ? sock_ioctl+0x0/0x250
[   77.254109]  [<c019cf4c>] vfs_ioctl+0x1c/0x70
[   77.254109]  [<c019d1fa>] do_vfs_ioctl+0x6a/0x590
[   77.254109]  [<c0178e50>] ? might_fault+0x90/0xa0
[   77.254109]  [<c0178e0a>] ? might_fault+0x4a/0xa0
[   77.254109]  [<c02ef90e>] ? sys_socketcall+0x17e/0x280
[   77.254109]  [<c019d759>] sys_ioctl+0x39/0x60
[   77.254109]  [<c0102e3b>] sysenter_do_call+0x12/0x32
[   77.254109] ---[ end trace 95ef563548d21efd ]---

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoSLAB: Fix lockdep annotation breakage
Pekka Enberg [Sun, 27 Dec 2009 12:33:14 +0000]
SLAB: Fix lockdep annotation breakage

Commit ce79ddc8e2376a9a93c7d42daf89bfcbb9187e62 ("SLAB: Fix lockdep annotations
for CPU hotplug") broke init_node_lock_keys() off-slab logic which causes
lockdep false positives.

Fix that up by reverting the logic back to original while keeping CPU hotplug
fixes intact.

Reported-and-tested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reported-and-tested-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

10 years agocfq-iosched: don't regard requests with long distance as close
Shaohua Li [Mon, 28 Dec 2009 12:18:44 +0000]
cfq-iosched: don't regard requests with long distance as close

seek_mean could be very big sometimes, using it as close criteria is meaningless
as this doen't improve any performance. So if it's big, let's fallback to
default value.

Reviewed-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoKVM: get rid of kvm_create_vm() unused label warning on s390
Heiko Carstens [Fri, 18 Dec 2009 08:41:43 +0000]
KVM: get rid of kvm_create_vm() unused label warning on s390

arch/s390/kvm/../../../virt/kvm/kvm_main.c: In function 'kvm_create_vm':
arch/s390/kvm/../../../virt/kvm/kvm_main.c:409: warning: label 'out_err' defined but not used

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoKVM: powerpc: Fix mtsrin in book3s_64 mmu
Alexander Graf [Sat, 19 Dec 2009 17:07:39 +0000]
KVM: powerpc: Fix mtsrin in book3s_64 mmu

We were shifting the Ks/Kp/N bits one bit too far on mtsrin. It took
me some time to figure that out, so I also put in some debugging and a
comment explaining the conversion.

This fixes current OpenBIOS boot on PPC64 KVM.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoKVM: ia64: fix build breakage due to host spinlock change
Luck, Tony [Fri, 18 Dec 2009 01:05:03 +0000]
KVM: ia64: fix build breakage due to host spinlock change

Len Brown pointed out that allmodconfig is broken for
ia64 because of:

arch/ia64/kvm/vmm.c: In function 'vmm_spin_unlock':
arch/ia64/kvm/vmm.c:70: error: 'spinlock_t' has no member named 'raw_lock'

KVM has it's own spinlock routines. It should not depend on the base kernel
spinlock_t type (which changed when ia64 switched to ticket locks).  Define
its own vmm_spinlock_t type.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoKVM: x86: Extend KVM_SET_VCPU_EVENTS with selective updates
Jan Kiszka [Sun, 6 Dec 2009 17:24:15 +0000]
KVM: x86: Extend KVM_SET_VCPU_EVENTS with selective updates

User space may not want to overwrite asynchronously changing VCPU event
states on write-back. So allow to skip nmi.pending and sipi_vector by
setting corresponding bits in the flags field of kvm_vcpu_events.

[avi: advertise the bits in KVM_GET_VCPU_EVENTS]

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoKVM: LAPIC: make sure IRR bitmap is scanned after vm load
Marcelo Tosatti [Mon, 14 Dec 2009 19:37:35 +0000]
KVM: LAPIC: make sure IRR bitmap is scanned after vm load

The vcpus are initialized with irr_pending set to false, but
loading the LAPIC registers with pending IRR fails to reset
the irr_pending variable.

Cc: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoKVM: Fix possible circular locking in kvm_vm_ioctl_assign_device()
Sheng Yang [Tue, 15 Dec 2009 02:28:07 +0000]
KVM: Fix possible circular locking in kvm_vm_ioctl_assign_device()

One possible order is:

KVM_CREATE_IRQCHIP ioctl(took kvm->lock) -> kvm_iobus_register_dev() ->
down_write(kvm->slots_lock).

The other one is in kvm_vm_ioctl_assign_device(), which take kvm->slots_lock
first, then kvm->lock.

Update the comment of lock order as well.

Observe it due to kernel locking debug warnings.

Cc: stable@kernel.org
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoKVM: MMU: remove prefault from invlpg handler
Marcelo Tosatti [Sat, 5 Dec 2009 14:34:11 +0000]
KVM: MMU: remove prefault from invlpg handler

The invlpg prefault optimization breaks Windows 2008 R2 occasionally.

The visible effect is that the invlpg handler instantiates a pte which
is, microseconds later, written with a different gfn by another vcpu.

The OS could have other mechanisms to prevent a present translation from
being used, which the hypervisor is unaware of.

While the documentation states that the cpu is at liberty to prefetch tlb
entries, it looks like this is not heeded, so remove tlb prefetch from
invlpg.

Cc: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

10 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Sun, 27 Dec 2009 12:36:25 +0000]
Merge branch 'fix/hda' into for-linus

10 years agoALSA: hda - Fix Oops at reloading beep devices
Takashi Iwai [Sun, 27 Dec 2009 12:27:39 +0000]
ALSA: hda - Fix Oops at reloading beep devices

The recent change for supporting dynamic beep device allocation caused
a problem resulting in Oops at reloading the driver.  Also, it ignores
the error from input device registration.

This patch fixes the wrong check in snd_hda_detach_beep_device(), and
returns an error when the input device registration fails properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agoALSA: hda - Don't cache beep controls
Takashi Iwai [Sun, 27 Dec 2009 09:25:58 +0000]
ALSA: hda - Don't cache beep controls

The beep control verbs don't need to be cached for resume.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agoNET: XFRM: Fix spelling of neighbour.
Ralf Baechle [Fri, 25 Dec 2009 23:30:02 +0000]
NET: XFRM: Fix spelling of neighbour.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 net/xfrm/xfrm_policy.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobond_3ad.c avoid possible null deref
Dan Carpenter [Wed, 23 Dec 2009 03:27:10 +0000]
bond_3ad.c avoid possible null deref

A few lines earlier we assume that best->slave could be either null or non-null so
we should check it here as well.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoFix MAC address access in 3c507, ibmlana, pcnet32 and libertas
Daniel Drake [Thu, 24 Dec 2009 08:11:24 +0000]
Fix MAC address access in 3c507, ibmlana, pcnet32 and libertas

Commit f001fde5eadd915f4858d22ed70d7040f48767cf changed
net_device.dev_addr from a 32-byte array to a pointer.

I found 4 ethernet drivers which rely on sizeof(dev_addr), which are now
only copying 4 bytes of the address information on 32bit systems.

Fix them to use ETH_ALEN.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agogianfar: Fix gianfar select_queue bogosity
Sandeep Gopalpet [Thu, 24 Dec 2009 03:13:06 +0000]
gianfar: Fix gianfar select_queue bogosity

The gfar_select_queue() function was used to set queue mapping
only for forwarding/bridging applications and the condition
for locally generated packets was completely ignored.

The solution is to remove the gfar_select_queue() function and
use skb_record_rx_queue to set queue mapping for
forwarding/bridging applications. This will ensure that in case of
forwarding/bridging applications txq = rxq will be selected and
skb_tx_hash will be used to pick up a txq for locally generated packets.

Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotun: use tun_sk instead container_of
Vitaliy Gusev [Fri, 25 Dec 2009 07:17:43 +0000]
tun: use tun_sk instead container_of

Using macro tun_sk is more clear and shorter. However tun.c has tun_sk,
but doesn't use it.

Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoucc_geth: Don't needlessly change MAC settings in adjust_link()
Anton Vorontsov [Thu, 24 Dec 2009 05:31:20 +0000]
ucc_geth: Don't needlessly change MAC settings in adjust_link()

If PHY doesn't have an IRQ, phylib would poll for link changes, and
would call adjust_link() every second. In that case we disable and
enable the controller every second.

Let's better check if there is actually anything changed, and, if so,
change the MAC settings.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoucc_geth: Fix netdev watchdog triggering on link changes
Anton Vorontsov [Thu, 24 Dec 2009 05:31:05 +0000]
ucc_geth: Fix netdev watchdog triggering on link changes

Since commit 864fdf884e82bacbe8ca5e93bd43393a61d2e2b4 ("ucc_geth:
Fix hangs after switching from full to half duplex") ucc_geth driver
disables the controller during MAC configuration changes. Though,
disabling the controller might take quite awhile, and so the netdev
watchdog might get upset:

 NETDEV WATCHDOG: eth2 (ucc_geth): transmit queue 0 timed out
 ------------[ cut here ]------------
 Badness at c02729a8 [verbose debug info unavailable]
 NIP: c02729a8 LR: c02729a8 CTR: c01b6088
 REGS: c0451c40 TRAP: 0700   Not tainted  (2.6.32-trunk-8360e)
 [...]
 NIP [c02729a8] dev_watchdog+0x280/0x290
 LR [c02729a8] dev_watchdog+0x280/0x290
 Call Trace:
 [c0451cf0] [c02729a8] dev_watchdog+0x280/0x290 (unreliable)
 [c0451d50] [c00377c4] run_timer_softirq+0x164/0x224
 [c0451da0] [c0032a38] __do_softirq+0xb8/0x13c
 [c0451df0] [c00065cc] do_softirq+0xa0/0xac
 [c0451e00] [c003280c] irq_exit+0x7c/0x9c
 [c0451e10] [c00640c4] __ipipe_sync_stage+0x248/0x24c
 [...]

This patch fixes the issue by detaching the netdev during the
time we change the configuration.

Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Tested-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Stable <stable@vger.kernel.org> [2.6.32]
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoucc_geth: Fix empty TX queue processing
Anton Vorontsov [Thu, 24 Dec 2009 05:31:03 +0000]
ucc_geth: Fix empty TX queue processing

Following oops was seen with the ucc_geth driver:

 Unable to handle kernel paging request for data at address 0x00000058
 Faulting instruction address: 0xc024f2fc
 Oops: Kernel access of bad area, sig: 11 [#1]
 [...]
 NIP [c024f2fc] skb_recycle_check+0x14/0x100
 LR [e30aa0a4] ucc_geth_poll+0xd8/0x4e0 [ucc_geth_driver]
 Call Trace:
 [df857d50] [c000b03c] __ipipe_grab_irq+0x3c/0xa4 (unreliable)
 [df857d60] [e30aa0a4] ucc_geth_poll+0xd8/0x4e0 [ucc_geth_driver]
 [df857dd0] [c0258cf8] net_rx_action+0xf8/0x1b8
 [df857e10] [c0032a38] __do_softirq+0xb8/0x13c
 [df857e60] [c00065cc] do_softirq+0xa0/0xac
 [...]

This is because ucc_geth_tx() tries to process an empty queue when
queues are logically stopped. Stopping the queues doesn't disable
polling, and since nowadays ucc_geth_tx() is actually called from
the polling routine, the oops above might pop up.

Fix this by removing 'netif_queue_stopped() == 0' check.

Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Tested-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Stable <stable@vger.kernel.org> [2.6.32]
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agothinkpad-acpi: improve Kconfig help text
Henrique de Moraes Holschuh [Sun, 27 Dec 2009 00:52:17 +0000]
thinkpad-acpi: improve Kconfig help text

Document that rfkill and ALSA functionality exists, but requires the
subsystems to be available, and not modular if thinkpad-acpi is not
modular.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agothinkpad-acpi: update volume subdriver documentation
Henrique de Moraes Holschuh [Sun, 27 Dec 2009 00:52:16 +0000]
thinkpad-acpi: update volume subdriver documentation

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agothinkpad-acpi: make volume subdriver optional
Henrique de Moraes Holschuh [Sun, 27 Dec 2009 00:52:15 +0000]
thinkpad-acpi: make volume subdriver optional

Allow the user to choose through Kconfig if the Console Audio Control
interface (aka "volume subdriver") should be available or not.

This not only saves some memory, but also allows the thinkpad-acpi
driver to be built-in even if ALSA is modular when the console audio
control interface is not wanted.

This change fixes a build problem that is causing some annoyances, in
a way that doesn't disable the entire driver on kernels without ALSA
support.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Amerigo Wang <amwang@redhat.com>
Cc: Helight Xu <helight.xu@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agothinkpad-acpi: don't fail to load the entire module due to ALSA problems
Henrique de Moraes Holschuh [Sun, 27 Dec 2009 00:52:14 +0000]
thinkpad-acpi: don't fail to load the entire module due to ALSA problems

If we cannot create the ALSA mixer, it is a good reason to fail to
load the volume subdriver, and not to fail to load the entire module.

While at it, add more debugging messages, as the error paths are being
used a lot more than I'd expect, and it is failing to set up the ALSA
mixer on a number of ThinkPads.

Reported-by: Peter Jordan <usernetwork@gmx.info>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

10 years agothinkpad-acpi: don't take the first ALSA slot by default
Henrique de Moraes Holschuh [Sun, 27 Dec 2009 00:52:13 +0000]
thinkpad-acpi: don't take the first ALSA slot by default

We don't want to be the first soundcard.  We don't want to shift other
soundcards out of the way either, even if they load much later.

Ask ALSA to (by default) load us in one of the last three slots.  This
can be overriden at will using the "index" parameter.

Reported-by: Whoopie <whoopie79@gmx.net>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>