12 years agofix build fail for hv_mouse indefine udelay
Youquan Song [Wed, 6 Apr 2011 06:35:12 +0000 (14:35 +0800)]
fix build fail for hv_mouse indefine udelay

Fix build failure issue for hv_mouse
When build 2.6.39-rc1 kernel, it will be blocked at build hv_mouse.

  drivers/staging/hv/hv_mouse.c: In function ‘ReleaseInputDevice’:
  drivers/staging/hv/hv_mouse.c:293: error: implicit declaration of function ‘udelay’

Signed-off-by: Youquan Song <>
Signed-off-by: Linus Torvalds <>
12 years agomm: avoid wrapping vm_pgoff in mremap()
Linus Torvalds [Thu, 7 Apr 2011 14:35:50 +0000 (07:35 -0700)]
mm: avoid wrapping vm_pgoff in mremap()

The normal mmap paths all avoid creating a mapping where the pgoff
inside the mapping could wrap around due to overflow.  However, an
expanding mremap() can take such a non-wrapping mapping and make it
bigger and cause a wrapping condition.

Noticed by Robert Swiecki when running a system call fuzzer, where it
caused a BUG_ON() due to terminally confusing the vma_prio_tree code.  A
vma dumping patch by Hugh then pinpointed the crazy wrapped case.

Reported-and-tested-by: Robert Swiecki <>
Acked-by: Hugh Dickins <>
Signed-off-by: Linus Torvalds <>
12 years agoLinux 2.6.39-rc2 v2.6.39-rc2
Linus Torvalds [Wed, 6 Apr 2011 01:30:43 +0000 (18:30 -0700)]
Linux 2.6.39-rc2

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Tue, 5 Apr 2011 22:29:01 +0000 (15:29 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/axboe/linux-2.6-block

* 'for-linus' of git://
  ide: always ensure that blk_delay_queue() is called if we have pending IO
  block: fix request sorting at unplug
  dm: improve block integrity support
  fs: export empty_aops
  ide: ide_requeue_and_plug() reinstate "always plug" behaviour
  blk-throttle: don't call xchg on bool
  ufs: remove unessecary blk_flush_plug
  block: make the flush insertion use the tail of the dispatch list
  block: get rid of elv_insert() interface
  block: dump request state on seeing a corrupted request completion

12 years agoinotify: fix double free/corruption of stuct user
Eric Paris [Tue, 5 Apr 2011 21:20:50 +0000 (17:20 -0400)]
inotify: fix double free/corruption of stuct user

On an error path in inotify_init1 a normal user can trigger a double
free of struct user.  This is a regression introduced by a2ae4cc9a16e
("inotify: stop kernel memory leak on file creation failure").

We fix this by making sure that if a group exists the user reference is
dropped when the group is cleaned up.  We should not explictly drop the
reference on error and also drop the reference when the group is cleaned

The new lifetime rules are that an inotify group lives from
inotify_new_group to the last fsnotify_put_group.  Since the struct user
and inotify_devs are directly tied to this lifetime they are only
changed/updated in those two locations.  We get rid of all special
casing of struct user or user->inotify_devs.

Signed-off-by: Eric Paris <>
Cc: (2.6.37 and up)
Signed-off-by: Linus Torvalds <>
12 years agoide: always ensure that blk_delay_queue() is called if we have pending IO
Jens Axboe [Tue, 5 Apr 2011 01:29:57 +0000 (03:29 +0200)]
ide: always ensure that blk_delay_queue() is called if we have pending IO

Just because we are not requeuing a request does not mean that
some aren't pending. So always issue a blk_delay_queue() if
either we are requeueing OR there's pending IO.

This fixes a boot problem for some IDE boxes.

Signed-off-by: Jens Axboe <>
12 years agoblock: fix request sorting at unplug
Konstantin Khlebnikov [Sun, 3 Apr 2011 22:15:02 +0000 (00:15 +0200)]
block: fix request sorting at unplug

Comparison function for list_sort() must be anticommutative,
otherwise it is not sorting in ordinary meaning.

But fortunately list_sort() always check ((*cmp)(priv, a, b) <= 0)
it not distinguish negative and zero, so comparison function can
implement only less-or-equal instead of full three-way comparison.

Signed-off-by: Konstantin Khlebnikov <>
Signed-off-by: Jens Axboe <>
12 years agodm: improve block integrity support
Mike Snitzer [Fri, 1 Apr 2011 19:02:31 +0000 (21:02 +0200)]
dm: improve block integrity support

The current block integrity (DIF/DIX) support in DM is verifying that
all devices' integrity profiles match during DM device resume (which
is past the point of no return).  To some degree that is unavoidable
(stacked DM devices force this late checking).  But for most DM
devices (which aren't stacking on other DM devices) the ideal time to
verify all integrity profiles match is during table load.

Introduce the notion of an "initialized" integrity profile: a profile
that was blk_integrity_register()'d with a non-NULL 'blk_integrity'
template.  Add blk_integrity_is_initialized() to allow checking if a
profile was initialized.

Update DM integrity support to:
- check all devices with _initialized_ integrity profiles match
  during table load; uninitialized profiles (e.g. for underlying DM
  device(s) of a stacked DM device) are ignored.
- disallow a table load that would result in an integrity profile that
  conflicts with a DM device's existing (in-use) integrity profile
- avoid clearing an existing integrity profile
- validate all integrity profiles match during resume; but if they
  don't all we can do is report the mismatch (during resume we're past
  the point of no return)

Signed-off-by: Mike Snitzer <>
Cc: Martin K. Petersen <>
Signed-off-by: Jens Axboe <>
12 years agofs: export empty_aops
Jens Axboe [Tue, 5 Apr 2011 21:51:48 +0000 (23:51 +0200)]
fs: export empty_aops

With the ->sync_page() hook gone, we have a few users that
add their own static address_space_operations without any
functions defined.

fs/inode.c already has an empty_aops that it uses for init
purposes. Lets export that and use it in the places where
an otherwise empty aops was defined.

Signed-off-by: Jens Axboe <>
12 years agoide: ide_requeue_and_plug() reinstate "always plug" behaviour
Jens Axboe [Wed, 30 Mar 2011 10:22:23 +0000 (12:22 +0200)]
ide: ide_requeue_and_plug() reinstate "always plug" behaviour

We see stalls if we don't always ensure that the queue gets run
again. Even if rq == NULL, we could have other pending requests
in the queue.

Signed-off-by: Jens Axboe <>
12 years agoblk-throttle: don't call xchg on bool
Andreas Schwab [Wed, 30 Mar 2011 10:21:56 +0000 (12:21 +0200)]
blk-throttle: don't call xchg on bool

xchg does not work portably with smaller than 32bit types.

Signed-off-by: Andreas Schwab <>
Signed-off-by: Jens Axboe <>
12 years agoufs: remove unessecary blk_flush_plug
Christoph Hellwig [Wed, 30 Mar 2011 10:17:43 +0000 (12:17 +0200)]
ufs: remove unessecary blk_flush_plug

We already flush the per-process plugging list when context switching,
so a blk_flush_plug call just before a yield() is not needed.

Signed-off-by: Christoph Hellwig <>
Signed-off-by: Jens Axboe <>
12 years agoblock: make the flush insertion use the tail of the dispatch list
Jens Axboe [Wed, 30 Mar 2011 11:27:09 +0000 (13:27 +0200)]
block: make the flush insertion use the tail of the dispatch list

It's not a preempt type request, in fact we have to insert it
behind requests that do specify INSERT_FRONT.

Signed-off-by: Jens Axboe <>
12 years agoblock: get rid of elv_insert() interface
Jens Axboe [Wed, 30 Mar 2011 07:52:30 +0000 (09:52 +0200)]
block: get rid of elv_insert() interface

Merge it with __elv_add_request(), it's pretty pointless to
have a function with only two callers. The main interface
is elv_add_request()/__elv_add_request().

Signed-off-by: Jens Axboe <>
12 years agoblock: dump request state on seeing a corrupted request completion
Jens Axboe [Wed, 30 Mar 2011 07:51:33 +0000 (09:51 +0200)]
block: dump request state on seeing a corrupted request completion

Currently we just dump a non-informative 'request botched' message.
Lets actually try and print something sane to help debug issues
around this.

Signed-off-by: Jens Axboe <>
12 years agoMerge branch 'drm-intel-fixes' of git://
Linus Torvalds [Tue, 5 Apr 2011 20:39:49 +0000 (13:39 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/keithp/linux-2.6

* 'drm-intel-fixes' of git://
  drm/i915/lvds: Remove 0xa0 DDC probe for LVDS
  drm/i915/crt: Remove 0xa0 probe for VGA

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Tue, 5 Apr 2011 19:35:29 +0000 (12:35 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://
  Input: rpckbd - fix a leak of the IRQ during init failure
  Input: wacom - add support for Lenovo tablet ID (0xE6)
  Input: i8042 - downgrade selftest error message to dbg()
  Input: synaptics - fix crash in synaptics_module_init()
  Input: spear-keyboard - fix inverted condition in interrupt handler
  Input: uinput - allow for 0/0 min/max on absolute axes.
  Input: sparse-keymap - report KEY_UNKNOWN for unknown scan codes
  Input: sparse-keymap - report scancodes with key events
  Input: h3600_ts_input - fix a spelling error
  Input: wacom - report resolution for pen devices
  Input: wacom - constify wacom_features for a new missed Bamboo models

12 years agoMerge branch 'merge' of git://
Linus Torvalds [Tue, 5 Apr 2011 19:29:43 +0000 (12:29 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://
  powerpc/pseries: Fix build without CONFIG_HOTPLUG_CPU
  powerpc: Set nr_cpu_ids early and use it to free PACAs
  powerpc/pseries: Don't register global initcall
  powerpc/kexec: Fix mismatched ifdefs for PPC64/SMP.
  edac/mpc85xx: Limit setting/clearing of HID1[RFXE] to e500v1/v2 cores
  powerpc/85xx: Update dts for PCIe memory maps to match u-boot of Px020RDB

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Tue, 5 Apr 2011 19:29:25 +0000 (12:29 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/btrfs-unstable

* 'for-linus' of git://
  Btrfs: don't warn in btrfs_add_orphan
  Btrfs: fix free space cache when there are pinned extents and clusters V2
  Btrfs: Fix uninitialized root flags for subvolumes
  btrfs: clear __GFP_FS flag in the space cache inode
  Btrfs: fix memory leak in start_transaction()
  Btrfs: fix memory leak in btrfs_ioctl_start_sync()
  Btrfs: fix subvol_sem leak in btrfs_rename()
  Btrfs: Fix oops for defrag with compression turned on
  Btrfs: fix /proc/mounts info.
  Btrfs: fix compiler warning in file.c

12 years agoMerge git://
Linus Torvalds [Tue, 5 Apr 2011 19:26:57 +0000 (12:26 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git:// (27 commits)
  ipv6: Don't pass invalid dst_entry pointer to dst_release().
  mlx4: fix kfree on error path in new_steering_entry()
  tcp: len check is unnecessarily devastating, change to WARN_ON
  sctp: malloc enough room for asconf-ack chunk
  sctp: fix auth_hmacs field's length of struct sctp_cookie
  net: Fix dev dev_ethtool_get_rx_csum() for forced NETIF_F_RXCSUM
  usbnet: use eth%d name for known ethernet devices
  starfire: clean up dma_addr_t size test
  iwlegacy: fix bugs in change_interface
  carl9170: Fix tx aggregation problems with some clients
  iwl3945: disable hw scan by default
  wireless: rt2x00: rt2800usb.c add and identify ids
  iwl3945: do not deprecate software scan
  mac80211: fix aggregation frame release during timeout
  cfg80211: fix BSS double-unlinking (continued)
  cfg80211:: fix possible NULL pointer dereference
  mac80211: fix possible NULL pointer dereference
  mac80211: fix NULL pointer dereference in ieee80211_key_alloc()
  ath9k: fix a chip wakeup related crash in ath9k_start
  mac80211: fix a crash in minstrel_ht in HT mode with no supported MCS rates

12 years agodrm/i915/lvds: Remove 0xa0 DDC probe for LVDS
Chris Wilson [Tue, 5 Apr 2011 15:04:40 +0000 (16:04 +0100)]
drm/i915/lvds: Remove 0xa0 DDC probe for LVDS

This is a revert of 428d2e828c0a68206e5158a42451487601dc9194.

This is broken in the same manner as for VGA: trying to write to an
invalid address on the (currently 7-bit) i2c bus.

One notable failure appears to be for MacBooks. The scary part was that
it gave the appearance of working (i.e. reporting the absence of the
panel) on various all-in-one machines with ghost LVDS panels and not
failing for laptops.

Signed-off-by: Chris Wilson <>
Acked-by: Dave Airlie <>
Signed-off-by: Keith Packard <>
12 years agodrm/i915/crt: Remove 0xa0 probe for VGA
Chris Wilson [Tue, 5 Apr 2011 15:04:39 +0000 (16:04 +0100)]
drm/i915/crt: Remove 0xa0 probe for VGA

This is a moral revert of 6ec3d0c0e9c0c605696e91048eebaca7b0c36695.

Following the fix to reset the GMBUS controller after a NAK, we finally
utilize the 0xa0 probe for a CRT connection. And discover that the code
is broken. Shock.

There are a number of issues, but following a key insight from Dave
Airlie, that 0xA0 is an invalid address on a 7-bit bus (though not if we
were to enable 10-bit addressing), and would look like the EDID port
0x50, it is possible to see where the confusion starts.

In short, a write to 0xA0 is accepted by the GMBUS controller which we
interpreted as meaning the existence of a connection (a slave on the
other end of the wire ACKing the write). That was false.

During testing with a broken GMBUS implementation, which never reset an
earlier NAK, this test always reported a NAK and so we proceeded on to
the next test.

Reported-and-tested-by: Sitsofe Wheeler <>
Reported-and-tested-by: Riccardo Magliocchetti <>
Signed-off-by: Chris Wilson <>
Acked-by: Dave Airlie <>
Signed-off-by: Keith Packard <>
12 years agopowerpc/pseries: Fix build without CONFIG_HOTPLUG_CPU
Matt Evans [Thu, 31 Mar 2011 19:33:08 +0000 (19:33 +0000)]
powerpc/pseries: Fix build without CONFIG_HOTPLUG_CPU

Signed-off-by: Matt Evans <>
Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc: Set nr_cpu_ids early and use it to free PACAs
Ryan Grimm [Thu, 31 Mar 2011 19:33:02 +0000 (19:33 +0000)]
powerpc: Set nr_cpu_ids early and use it to free PACAs

Without this, "holes" in the CPU numbering can cause us to
free too many PACAs

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/pseries: Don't register global initcall
Benjamin Herrenschmidt [Thu, 31 Mar 2011 18:49:45 +0000 (18:49 +0000)]
powerpc/pseries: Don't register global initcall

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/kexec: Fix mismatched ifdefs for PPC64/SMP.
Paul Gortmaker [Thu, 31 Mar 2011 07:27:20 +0000 (07:27 +0000)]
powerpc/kexec: Fix mismatched ifdefs for PPC64/SMP.

Commit b3df895aebe091b1657 "powerpc/kexec: Add support for FSL-BookE"
introduced the original PPC_STD_MMU_64 checks around the function
crash_kexec_wait_realmode().   Then commit c2be05481f61252
"powerpc: Fix default_machine_crash_shutdown #ifdef botch" changed
the ifdef around the calling site to add a check on SMP, but the
ifdef around the function itself was left unchanged, leaving an
unused function for PPC_STD_MMU_64=y and SMP=n

Rather than have two ifdefs that can get out of sync like this,
simply put the corrected conditional around the function and use
a stub to get rid of one set of ifdefs completely.

Signed-off-by: Paul Gortmaker <>
Signed-off-by: Benjamin Herrenschmidt <>
12 years agoMerge remote branch 'kumar/merge' into merge
Benjamin Herrenschmidt [Tue, 5 Apr 2011 06:20:22 +0000 (16:20 +1000)]
Merge remote branch 'kumar/merge' into merge

12 years agoBtrfs: don't warn in btrfs_add_orphan
Josef Bacik [Mon, 28 Mar 2011 13:43:25 +0000 (13:43 +0000)]
Btrfs: don't warn in btrfs_add_orphan

When I moved the orphan adding to btrfs_truncate I missed the fact that during
orphan cleanup we just add the orphan items to the orphan list without going
through btrfs_orphan_add, which results in lots of warnings on mount if you have
any orphan items that need to be truncated.  Just remove this warning since it's
ok, this will allow all of the normal space accounting take place.  Thanks,

Signed-off-by: Josef Bacik <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: fix free space cache when there are pinned extents and clusters V2
Josef Bacik [Fri, 1 Apr 2011 14:55:00 +0000 (14:55 +0000)]
Btrfs: fix free space cache when there are pinned extents and clusters V2

I noticed a huge problem with the free space cache that was presenting
as an early ENOSPC.  Turns out when writing the free space cache out I
forgot to take into account pinned extents and more importantly
clusters.  This would result in us leaking free space everytime we
unmounted the filesystem and remounted it.

I fix this by making sure to check and see if the current block group
has a cluster and writing out any entries that are in the cluster to the
cache, as well as writing any pinned extents we currently have to the
cache since those will be available for us to use the next time the fs

This patch also adds a check to the end of load_free_space_cache to make
sure we got the right amount of free space cache, and if not make sure
to clear the cache and re-cache the old fashioned way.

Signed-off-by: Josef Bacik <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: Fix uninitialized root flags for subvolumes
Li Zefan [Mon, 28 Mar 2011 02:01:25 +0000 (02:01 +0000)]
Btrfs: Fix uninitialized root flags for subvolumes

root_item->flags and root_item->byte_limit are not initialized when
a subvolume is created. This bug is not revealed until we added
readonly snapshot support - now you mount a btrfs filesystem and you
may find the subvolumes in it are readonly.

To work around this problem, we steal a bit from root_item->inode_item->flags,
and use it to indicate if those fields have been properly initialized.
When we read a tree root from disk, we check if the bit is set, and if
not we'll set the flag and initialize the two fields of the root item.

Reported-by: Andreas Philipp <>
Signed-off-by: Li Zefan <>
Tested-by: Andreas Philipp <>
Signed-off-by: Chris Mason <>
12 years agobtrfs: clear __GFP_FS flag in the space cache inode
Miao Xie [Thu, 31 Mar 2011 09:43:23 +0000 (09:43 +0000)]
btrfs: clear __GFP_FS flag in the space cache inode

the object id of the space cache inode's key is allocated from the relative
root, just like the regular file. So we can't identify space cache inode by
checking the object id of the inode's key, and we have to clear __GFP_FS flag
at the time we look up the space cache inode.

Signed-off-by: Miao Xie <>
Signed-off-by: Liu Bo <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: fix memory leak in start_transaction()
Yoshinori Sano [Sun, 3 Apr 2011 12:31:28 +0000 (12:31 +0000)]
Btrfs: fix memory leak in start_transaction()

Free btrfs_trans_handle when join_transaction() fails
in start_transaction()

Signed-off-by: Yoshinori Sano <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: fix memory leak in btrfs_ioctl_start_sync()
Tsutomu Itoh [Mon, 4 Apr 2011 01:52:13 +0000 (01:52 +0000)]
Btrfs: fix memory leak in btrfs_ioctl_start_sync()

Call btrfs_end_transaction() if btrfs_commit_transaction_async() fails.

Signed-off-by: Tsutomu Itoh <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: fix subvol_sem leak in btrfs_rename()
Johann Lombardi [Thu, 31 Mar 2011 13:23:47 +0000 (13:23 +0000)]
Btrfs: fix subvol_sem leak in btrfs_rename()

btrfs_rename() does not release the subvol_sem if the transaction failed to start.

Signed-off-by: Johann Lombardi <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: Fix oops for defrag with compression turned on
Li Zefan [Mon, 28 Mar 2011 08:30:38 +0000 (08:30 +0000)]
Btrfs: Fix oops for defrag with compression turned on

When we defrag a file, whose size can be fit into an inline extent,
with compression enabled, the compress type is set to be
fs_info->compress_type, which is 0 if the btrfs filesystem is mounted
without compress option. This leads to oops.

Reported-by: Daniel Blueman <>
Signed-off-by: Li Zefan <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: fix /proc/mounts info.
Tsutomu Itoh [Thu, 31 Mar 2011 00:44:29 +0000 (00:44 +0000)]
Btrfs: fix /proc/mounts info.

Some mount options are not displayed by /proc/mounts.
This patch displays the option such as compress_type by /proc/mounts.

    $ mount | grep sdc2
    /dev/sdc2 on /test12 type btrfs (rw,space_cache,compress=lzo)
    $ cat /proc/mounts | grep sdc2
    /dev/sdc2 /test12 btrfs rw,relatime,compress 0 0

    $ mount | grep sdc2
    /dev/sdc2 on /test12 type btrfs (rw,space_cache,compress=lzo)
    $ cat /proc/mounts | grep sdc2
    /dev/sdc2 /test12 btrfs rw,relatime,compress=lzo,space_cache 0 0

Signed-off-by: Tsutomu Itoh <>
Signed-off-by: Chris Mason <>
12 years agoBtrfs: fix compiler warning in file.c
Tsutomu Itoh [Wed, 30 Mar 2011 00:57:23 +0000 (00:57 +0000)]
Btrfs: fix compiler warning in file.c

While compiling Btrfs, I got following messages:

  CC [M]  fs/btrfs/file.o
fs/btrfs/file.c: In function '__btrfs_buffered_write':
fs/btrfs/file.c:909: warning: 'ret' may be used uninitialized in this function
  CC [M]  fs/btrfs/tree-defrag.o

This patch fixes compiler warning.

Signed-off-by: Tsutomu Itoh <>
Signed-off-by: Chris Mason <>
12 years agoMerge branch 'drm-fixes' of git://
Linus Torvalds [Tue, 5 Apr 2011 00:56:07 +0000 (17:56 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://
  drm: fix "persistant" typo
  drm/radeon/kms: add some new ontario pci ids
  drm/radeon/kms: pageflipping cleanup for avivo+
  drm/radeon/kms: Add support for tv-out dongle on G5 9600
  drm: export drm_find_cea_extension to drivers
  drm/radeon/kms: add some sanity checks to obj info record parsingi (v2)
  drm/i915: Reset GMBUS controller after NAK
  drm/i915: Busy-spin wait_for condition in atomic contexts
  drm/i915/lvds: Always return connected in the absence of better information

12 years agoMerge branch 'next' of git://
Linus Torvalds [Tue, 5 Apr 2011 00:54:46 +0000 (17:54 -0700)]
Merge branch 'next' of git://

* 'next' of git://
  microblaze: Fix ftrace
  microblaze: Wire up new syscalls
  microblaze: Fix level/edge irq sensibility

12 years agoDocumentation: update cgroups info user groups names
Geunsik Lim [Mon, 4 Apr 2011 22:10:45 +0000 (15:10 -0700)]
Documentation: update cgroups info user groups names

Update suitable words to explain / understand cgroups contents.

Signed-off-by: Geunsik Lim <>
Cc: Paul Menage <>
Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agoDocumentation: consolidate leds files to leds/ subdir
Antonio Ospite [Mon, 4 Apr 2011 22:08:46 +0000 (15:08 -0700)]
Documentation: consolidate leds files to leds/ subdir

leds: move leds-class documentation under the leds/ subdir.
Add also a leds/00-INDEX file describing the files under leds/

Signed-off-by: Antonio Ospite <>
Acked-by: Richard Purdie <>
Cc: Andrew Morton <>
Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agokemleak-test: build as module only
Daniel Baluta [Mon, 4 Apr 2011 22:06:44 +0000 (15:06 -0700)]
kemleak-test: build as module only

mm/kmemleak-test.c is used to provide an example of how kmemleak
tool works.

Memory is leaked at module unload-time, so building the test
in kernel (Y) makes the leaks impossible and the test useless.

Qualify DEBUG_KMEMLEAK_TEST config symbol with "depends on m",
to restrict module-only building.

Signed-off-by: Daniel Baluta <>
Acked-by: Pekka Enberg <>
Acked-by: Catalin Marinas <>
Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agoDocumentation: fix minor typos/spelling
Sylvestre Ledru [Mon, 4 Apr 2011 22:04:46 +0000 (15:04 -0700)]
Documentation: fix minor typos/spelling

Fix some minor typos:
 * informations => information
 * there own => their own
 * these => this

Signed-off-by: Sylvestre Ledru <>
Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agoDocumentation: update panic parameter info
Randy Dunlap [Mon, 4 Apr 2011 22:02:24 +0000 (15:02 -0700)]
Documentation: update panic parameter info

Add a little more info for some of the panic-related kernel parameters.
Fix "oops=panic" to fit in 80 columns.

Signed-off-by: Randy Dunlap <>
Reviewed-by: Jesper Juhl <>
Signed-off-by: Linus Torvalds <>
12 years agokernel/signal.c: add kernel-doc notation to syscalls
Randy Dunlap [Mon, 4 Apr 2011 22:00:26 +0000 (15:00 -0700)]
kernel/signal.c: add kernel-doc notation to syscalls

Add kernel-doc to syscalls in signal.c.

Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agokernel/signal.c: fix typos and coding style
Randy Dunlap [Mon, 4 Apr 2011 21:59:31 +0000 (14:59 -0700)]
kernel/signal.c: fix typos and coding style

General coding style and comment fixes; no code changes:

 - Use multi-line-comment coding style.
 - Put some function signatures completely on one line.
 - Hyphenate some words.
 - Spell Posix as POSIX.
 - Correct typos & spellos in some comments.
 - Drop trailing whitespace.
 - End sentences with periods.

Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agoDocumentation: update kmemleak arch. info
Daniel Baluta [Mon, 4 Apr 2011 21:58:03 +0000 (14:58 -0700)]
Documentation: update kmemleak arch. info

Besides x86 and arm, kmemleak now supports powerpc, sparc, sh,
microblaze and tile.

Signed-off-by: Daniel Baluta <>
Acked-by: Catalin Marinas <>
Signed-off-by: Randy Dunlap <>
Signed-off-by: Linus Torvalds <>
12 years agodrm: fix "persistant" typo
Jan Engelhardt [Sun, 3 Apr 2011 23:25:18 +0000 (01:25 +0200)]
drm: fix "persistant" typo

Signed-off-by: Jan Engelhardt <>
Signed-off-by: Dave Airlie <>
12 years agodrm/radeon/kms: add some new ontario pci ids
Alex Deucher [Mon, 4 Apr 2011 15:03:16 +0000 (11:03 -0400)]
drm/radeon/kms: add some new ontario pci ids

Signed-off-by: Alex Deucher <>
Signed-off-by: Dave Airlie <>
12 years agotty: fix endless work loop when the buffer fills up
Linus Torvalds [Mon, 4 Apr 2011 21:26:54 +0000 (14:26 -0700)]
tty: fix endless work loop when the buffer fills up

Commit f23eb2b2b285 ('tty: stop using "delayed_work" in the tty layer')
ended up causing hung machines on UP with no preemption, because the
work routine to flip the buffer data to the ldisc would endlessly re-arm
itself if the destination buffer had filled up.

With the delayed work, that only caused a timer-driving polling of the
tty state every timer tick, but without the delay we just ended up with
basically a busy loop instead.

Stop the insane polling, and instead make the code that opens up the
receive room re-schedule the buffer flip work.  That's what we should
have been doing anyway.

This same "poll for tty room" issue is almost certainly also the cause
of excessive kworker activity when idle reported by Dave Jones, who also
reported "flush_to_ldisc executing 2500 times a second" back in Nov 2010:

which is that silly flushing done every timer tick.  Wasting both power
and CPU for no good reason.

Reported-and-tested-by: Alexander Beregalov <>
Reported-and-tested-by: Sitsofe Wheeler <>
Cc: Greg KH <>
Cc: Alan Cox <>
Cc: Dave Jones <>
Signed-off-by: Linus Torvalds <>
12 years agoipv6: Don't pass invalid dst_entry pointer to dst_release().
Boris Ostrovsky [Mon, 4 Apr 2011 20:07:26 +0000 (13:07 -0700)]
ipv6: Don't pass invalid dst_entry pointer to dst_release().

Make sure dst_release() is not called with error pointer. This is
similar to commit 4910ac6c526d2868adcb5893e0c428473de862b5 ("ipv4:
Don't ip_rt_put() an error pointer in RAW sockets.").

Signed-off-by: Boris Ostrovsky <>
Signed-off-by: David S. Miller <>
12 years agoMerge branch 'x86-fixes-for-linus' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:37:45 +0000 (08:37 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://
  x86, UV: Fix kdump reboot
  x86, amd-nb: Rename CPU PCI id define for F4
  sound: Add delay.h to sound/soc/codecs/sn95031.c
  x86, mtrr, pat: Fix one cpu getting out of sync during resume
  x86, microcode: Unregister syscore_ops after microcode unloaded
  x86: Stop including <linux/delay.h> in two asm header files

12 years agoMerge branch 'sched-fixes-for-linus' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:36:58 +0000 (08:36 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://
  sched: Fix rebalance interval calculation
  sched, doc: Beef up load balancing description
  sched: Leave sched_setscheduler() earlier if possible, do not disturb SCHED_FIFO tasks

12 years agoMerge branch 'perf-fixes-for-linus' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:36:40 +0000 (08:36 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://
  perf: Fix task_struct reference leak
  perf: Fix task context scheduling
  perf: mmap 512 kiB by default
  perf: Rebase max unprivileged mlock threshold on top of page size
  perf tools: Fix NO_NEWT=1 python build error
  perf symbols: Properly align symbol_conf.priv_size
  perf tools: Emit clearer message for sys_perf_event_open ENOENT return
  perf tools: Fixup exit path when not able to open events
  perf symbols: Fix vsyscall symbol lookup
  oprofile, x86: Allow setting EDGE/INV/CMASK for counter events

12 years agoMerge branch 'core-fixes-for-linus' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:36:15 +0000 (08:36 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://
  rcu: create new rcu_access_index() and use in mce
  WARN_ON_SMP(): Add comment to explain ({0;})

12 years agousb/serial: fix function args warnings, dropping *filp
Randy Dunlap [Sun, 3 Apr 2011 18:42:00 +0000 (11:42 -0700)]
usb/serial: fix function args warnings, dropping *filp

Fix build warnings caused by removal of *filp arg in struct

These changes were missed somehow in commits 00a0d0d65b61 ("tty: remove
filp from the USB tty ioctls") and 60b33c133ca0b ("tiocmget: kill off
the passing of the struct file")

  drivers/usb/serial/mct_u232.c:159: warning: initialization from incompatible pointer type
  drivers/usb/serial/opticon.c:627: warning: initialization from incompatible pointer type

Signed-off-by: Randy Dunlap <>
Cc: Alan Cox <>
Signed-off-by: Linus Torvalds <>
12 years agoMerge branch 'v4l_for_linus' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:33:53 +0000 (08:33 -0700)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://
  [media] radio: wl128x: Update registration process with ST
  [media] staging: altera-jtag needs delay.h

12 years agoMerge branch 'unicore32' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:33:21 +0000 (08:33 -0700)]
Merge branch 'unicore32' of git://git./linux/kernel/git/epip/linux-2.6-unicore32

* 'unicore32' of git://
  unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable
  unicore32 core architecture: remove duplicated #include
  unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state
  unicore32 fix: remove arch-specific futex support
  unicore32 ldscript fix: add cacheline parameter to PERCPU() macro

12 years agoMerge branch 'hwmon-for-linus' of git://
Linus Torvalds [Mon, 4 Apr 2011 15:32:56 +0000 (08:32 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://
  hwmon: twl4030-madc-hwmon: add "platform:" prefix for platform modalias

12 years agontp: fix non privileged system time shifting
Richard Cochran [Mon, 4 Apr 2011 15:31:23 +0000 (08:31 -0700)]
ntp: fix non privileged system time shifting

The ADJ_SETOFFSET bit added in commit 094aa188 ("ntp: Add ADJ_SETOFFSET
mode bit") also introduced a way for any user to change the system time.
Sneaky or buggy calls to adjtimex() could set


which would result in a successful call to timekeeping_inject_offset().
This patch fixes the issue by adding the capability check.

Signed-off-by: Richard Cochran <>
Signed-off-by: Linus Torvalds <>
12 years agortc-mrst: Fix section types
Major Lee [Mon, 4 Apr 2011 10:32:12 +0000 (11:32 +0100)]
rtc-mrst: Fix section types

Fix the following section mismatch warning.

  WARNING: drivers/rtc/built-in.o(.data+0xa0): Section mismatch in reference from the variable vrtc_mrst_platform_driver to the function .init.text:vrtc_mrst_platform_probe()
  The variable vrtc_mrst_platform_driver references the function __init vrtc_mrst_platform_probe()
  If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable:
    *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,

Signed-off-by: Major Lee <>
Signed-off-by: Alan Cox <>
Signed-off-by: Linus Torvalds <>
12 years agoedac/mpc85xx: Limit setting/clearing of HID1[RFXE] to e500v1/v2 cores
Kumar Gala [Thu, 31 Mar 2011 22:11:39 +0000 (17:11 -0500)]
edac/mpc85xx: Limit setting/clearing of HID1[RFXE] to e500v1/v2 cores

Only the e500v1/v2 cores have HID1[RXFE] so we should attempt to set or
clear this register bit on them.  Otherwise we get crashes like:

NIP: c0579f84 LR: c006d550 CTR: c0579f84
REGS: ef857ec0 TRAP: 0700   Not tainted  (
MSR: 00021002 <ME,CE>  CR: 22044022  XER: 00000000
TASK = ef8559c0[1] 'swapper' THREAD: ef856000 CPU: 0
GPR00: c006d538 ef857f70 ef8559c0 00000000 00000004 00000000 00000000 00000000
GPR08: c0590000 c30170a8 00000000 c30170a8 00000001 0fffe000 00000000 00000000
GPR16: 00000000 7ffa0e60 00000000 00000000 7ffb0bd8 7ff3b844 c05be000 00000000
GPR24: 00000000 00000000 c05c28b0 c0579fac 00000000 00029002 00000000 c0579f84
NIP [c0579f84] mpc85xx_mc_clear_rfxe+0x0/0x28
LR [c006d550] on_each_cpu+0x34/0x50
Call Trace:
[ef857f70] [c006d538] on_each_cpu+0x1c/0x50 (unreliable)
[ef857f90] [c057a070] mpc85xx_mc_init+0xc4/0xdc
[ef857fa0] [c0001cd4] do_one_initcall+0x34/0x1a8
[ef857fd0] [c055d9d8] kernel_init+0x17c/0x218
[ef857ff0] [c000cda4] kernel_thread+0x4c/0x68
Instruction dump:
40be0018 3c60c052 3863c70c 4be9baad 3be0ffed 4bd7c99d 80010014 7fe3fb78
83e1000c 38210010 7c0803a6 4e800020 <7c11faa654290024 81290008
Oops: Exception in kernel mode, sig: 4 [#2]
---[ end trace 49ff3b8f93efde1a ]---

Also use the HID1_RFXE define rather than a magic number.

Signed-off-by: Kumar Gala <>
12 years agopowerpc/85xx: Update dts for PCIe memory maps to match u-boot of Px020RDB
Prabhakar Kushwaha [Fri, 25 Mar 2011 04:47:45 +0000 (10:17 +0530)]
powerpc/85xx: Update dts for PCIe memory maps to match u-boot of Px020RDB

PCIe memory address space is 1:1 mapped with u-boot.

Update dts of Px020RDB i.e. P1020RDB and P2020RDB to match the address map
changes in u-boot.

Signed-off-by: Prabhakar Kushwaha <>
Signed-off-by: Kumar Gala <>
12 years agomlx4: fix kfree on error path in new_steering_entry()
Mariusz Kozlowski [Mon, 4 Apr 2011 05:04:01 +0000 (22:04 -0700)]
mlx4: fix kfree on error path in new_steering_entry()

On error path kfree() should get pointer to memory allocated by
kmalloc() not the address of variable holding it (which is on stack).

Signed-off-by: Mariusz Kozlowski <>
Signed-off-by: David S. Miller <>
12 years agodrm/radeon/kms: pageflipping cleanup for avivo+
Alex Deucher [Sat, 2 Apr 2011 13:15:50 +0000 (09:15 -0400)]
drm/radeon/kms: pageflipping cleanup for avivo+

Avoid touching the flip setup regs while
acceleration is running.  Set them at modeset
rather than during pageflip.  Touching these
regs while acceleration is active caused hangs
on pre-avivo chips.  These chips do not seem
to be affected, but better safe than sorry,
plus it avoids repeatedly reprogramming the
regs every flip.

Signed-off-by: Alex Deucher <>
Signed-off-by: Dave Airlie <>
12 years agodrm/radeon/kms: Add support for tv-out dongle on G5 9600
Alex Deucher [Sat, 2 Apr 2011 13:09:08 +0000 (09:09 -0400)]
drm/radeon/kms: Add support for tv-out dongle on G5 9600

Signed-off-by: Alex Deucher <>
Signed-off-by: Dave Airlie <>
12 years agoInput: rpckbd - fix a leak of the IRQ during init failure
Axel Lin [Sun, 3 Apr 2011 04:20:24 +0000 (21:20 -0700)]
Input: rpckbd - fix a leak of the IRQ during init failure

In rpckbd_open prror path, free_irq() was using NULL rather than the
driver data as the data pointer so free_irq() wouldn't have matched.

Signed-off-by: Axel Lin <>
Signed-off-by: Dmitry Torokhov <>
12 years agounicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable
Guan Xuetao [Fri, 1 Apr 2011 08:38:59 +0000 (16:38 +0800)]
unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable

1. get videomemory by __get_free_pages() in fb-puv3.c
2. remove resource reservation for old fixed UNIGFX_MMAP & UVC_MMAP space
4. remove unused header linux/vmalloc.h in fb-puv3.h

Signed-off-by: Guan Xuetao <>
Acked-by: Arnd Bergmann <>
12 years agounicore32 core architecture: remove duplicated #include
Huang Weiyi [Sun, 20 Mar 2011 08:56:55 +0000 (16:56 +0800)]
unicore32 core architecture: remove duplicated #include

Remove duplicated #include('s) in

Signed-off-by: Huang Weiyi <>
Acked-by: Guan Xuetao <>
12 years agounicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state
Guan Xuetao [Tue, 29 Mar 2011 12:38:51 +0000 (20:38 +0800)]
unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state

Signed-off-by: Guan Xuetao <>
12 years agounicore32 fix: remove arch-specific futex support
Guan Xuetao [Tue, 29 Mar 2011 14:17:42 +0000 (22:17 +0800)]
unicore32 fix: remove arch-specific futex support

The futex functions in unicore32 are not used and verified,
so just replaced by asm-generic version.

Signed-off-by: Guan Xuetao <>
Acked-by: Arnd Bergmann <>
12 years agounicore32 ldscript fix: add cacheline parameter to PERCPU() macro
Guan Xuetao [Tue, 29 Mar 2011 13:30:04 +0000 (21:30 +0800)]
unicore32 ldscript fix: add cacheline parameter to PERCPU() macro

Also, adjust cacheline parameter of RW_DATA_SECTION and EXCEPTION_TABLE

Signed-off-by: Guan Xuetao <>
Acked-by: Arnd Bergmann <>
12 years agotcp: len check is unnecessarily devastating, change to WARN_ON
Ilpo Järvinen [Sat, 2 Apr 2011 04:47:41 +0000 (21:47 -0700)]
tcp: len check is unnecessarily devastating, change to WARN_ON

All callers are prepared for alloc failures anyway, so this error
can safely be boomeranged to the callers domain without super
bad consequences. ...At worst the connection might go into a state
where each RTO tries to (unsuccessfully) re-fragment with such
a mis-sized value and eventually dies.

Signed-off-by: Ilpo Järvinen <>
Signed-off-by: David S. Miller <>
12 years agosctp: malloc enough room for asconf-ack chunk
Wei Yongjun [Thu, 31 Mar 2011 23:42:55 +0000 (23:42 +0000)]
sctp: malloc enough room for asconf-ack chunk

Sometime the ASCONF_ACK parameters can equal to the fourfold of
ASCONF parameters, this only happend in some special case:

  ASCONF parameter is :
    Unrecognized Parameter (4 bytes)
  ASCONF_ACK parameter should be:
    Error Cause Indication parameter (8 bytes header)
     + Error Cause (4 bytes header)
       + Unrecognized Parameter (4bytes)

Four 4bytes Unrecognized Parameters in ASCONF chunk will cause panic.

Pid: 0, comm: swapper Not tainted 2.6.38-next+ #22 Bochs Bochs
EIP: 0060:[<c0717eae>] EFLAGS: 00010246 CPU: 0
EIP is at skb_put+0x60/0x70
EAX: 00000077 EBX: c09060e2 ECX: dec1dc30 EDX: c09469c0
ESI: 00000000 EDI: de3c8d40 EBP: dec1dc58 ESP: dec1dc2c
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process swapper (pid: 0, ti=dec1c000 task=c09aef20 task.ti=c0980000)
 c09469c0 e1894fa4 00000044 00000004 de3c8d00 de3c8d00 de3c8d44 de3c8d40
 c09060e2 de25dd80 de3c8d40 dec1dc7c e1894fa4 dec1dcb0 00000040 00000004
 00000000 00000800 00000004 00000004 dec1dce0 e1895a2b dec1dcb4 de25d960
Call Trace:
 [<e1894fa4>] ? sctp_addto_chunk+0x4e/0x89 [sctp]
 [<e1894fa4>] sctp_addto_chunk+0x4e/0x89 [sctp]
 [<e1895a2b>] sctp_process_asconf+0x32f/0x3d1 [sctp]
 [<e188d554>] sctp_sf_do_asconf+0xf8/0x173 [sctp]
 [<e1890b02>] sctp_do_sm+0xb8/0x159 [sctp]
 [<e18a2248>] ? sctp_cname+0x0/0x52 [sctp]
 [<e189392d>] sctp_assoc_bh_rcv+0xac/0xe3 [sctp]
 [<e1897d76>] sctp_inq_push+0x2d/0x30 [sctp]
 [<e18a21b2>] sctp_rcv+0x7a7/0x83d [sctp]
 [<c077a95c>] ? ipv4_confirm+0x118/0x125
 [<c073a970>] ? nf_iterate+0x34/0x62
 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194
 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194
 [<c0747992>] ip_local_deliver_finish+0xf5/0x194
 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194
 [<c0747a6e>] NF_HOOK.clone.1+0x3d/0x44
 [<c0747ab3>] ip_local_deliver+0x3e/0x44
 [<c074789d>] ? ip_local_deliver_finish+0x0/0x194
 [<c074775c>] ip_rcv_finish+0x29f/0x2c7
 [<c07474bd>] ? ip_rcv_finish+0x0/0x2c7
 [<c0747a6e>] NF_HOOK.clone.1+0x3d/0x44
 [<c0747cae>] ip_rcv+0x1f5/0x233
 [<c07474bd>] ? ip_rcv_finish+0x0/0x2c7
 [<c071dce3>] __netif_receive_skb+0x310/0x336
 [<c07221f3>] netif_receive_skb+0x4b/0x51
 [<e0a4ed3d>] cp_rx_poll+0x1e7/0x29c [8139cp]
 [<c072275e>] net_rx_action+0x65/0x13a
 [<c0445a54>] __do_softirq+0xa1/0x149
 [<c04459b3>] ? __do_softirq+0x0/0x149
 [<c0445891>] ? irq_exit+0x37/0x72
 [<c040a7e9>] ? do_IRQ+0x81/0x95
 [<c07b3670>] ? common_interrupt+0x30/0x38
 [<c0428058>] ? native_safe_halt+0xa/0xc
 [<c040f5d7>] ? default_idle+0x58/0x92
 [<c0408fb0>] ? cpu_idle+0x96/0xb2
 [<c0797989>] ? rest_init+0x5d/0x5f
 [<c09fd90c>] ? start_kernel+0x34b/0x350
 [<c09fd0cb>] ? i386_start_kernel+0xba/0xc1

Signed-off-by: Wei Yongjun <>
Signed-off-by: David S. Miller <>
12 years agosctp: fix auth_hmacs field's length of struct sctp_cookie
Wei Yongjun [Thu, 31 Mar 2011 23:38:54 +0000 (23:38 +0000)]
sctp: fix auth_hmacs field's length of struct sctp_cookie

auth_hmacs field of struct sctp_cookie is used for store
Requested HMAC Algorithm Parameter, and each HMAC Identifier
is 2 bytes, so the length should be:
  SCTP_AUTH_NUM_HMACS * sizeof(__u16) + 2

Signed-off-by: Wei Yongjun <>
Signed-off-by: David S. Miller <>
12 years agonet: Fix dev dev_ethtool_get_rx_csum() for forced NETIF_F_RXCSUM
Michał Mirosław [Wed, 30 Mar 2011 23:58:08 +0000 (23:58 +0000)]
net: Fix dev dev_ethtool_get_rx_csum() for forced NETIF_F_RXCSUM

dev_ethtool_get_rx_csum() won't report rx checksumming when it's not
changeable and driver is converted to hw_features and friends. Fix this.

(dev->hw_features & NETIF_F_RXCSUM) check is dropped - if the
ethtool_ops->get_rx_csum is set, then driver is not coverted, yet.

Signed-off-by: Michał Mirosław <>
Signed-off-by: David S. Miller <>
12 years agousbnet: use eth%d name for known ethernet devices
Arnd Bergmann [Sat, 2 Apr 2011 03:12:02 +0000 (20:12 -0700)]
usbnet: use eth%d name for known ethernet devices

The documentation for the USB ethernet devices suggests that
only some devices are supposed to use usb0 as the network interface
name instead of eth0. The logic used there, and documented in
Kconfig for CDC is that eth0 will be used when the mac address
is a globally assigned one, but usb0 is used for the locally
managed range that is typically used on point-to-point links.

Unfortunately, this has caused a lot of pain on the smsc95xx
device that is used on the popular pandaboard without an
EEPROM to store the MAC address, which causes the driver to
call random_ether_address().

Obviously, there should be a proper MAC addressed assigned to
the device, and discussions are ongoing about how to solve
this, but this patch at least makes sure that the default
interface naming gets a little saner and matches what the
user can expect based on the documentation, including for
new devices.

The approach taken here is to flag whether a device might be a
point-to-point link with the new FLAG_POINTTOPOINT setting in
the usbnet driver_info. A driver can set both FLAG_POINTTOPOINT
and FLAG_ETHER if it is not sure (e.g. cdc_ether), or just one
of the two.  The usbnet framework only looks at the MAC address
for device naming if both flags are set, otherwise it trusts the

Signed-off-by: Arnd Bergmann <>
Tested-by: Andy Green <>
Signed-off-by: David S. Miller <>
12 years agostarfire: clean up dma_addr_t size test
FUJITA Tomonori [Fri, 1 Apr 2011 05:27:51 +0000 (05:27 +0000)]
starfire: clean up dma_addr_t size test

Now we have CONFIG_ARCH_DMA_ADDR_T_64BIT. We can fix the hacky
dma_addr_t size test cleanly.

Signed-off-by: FUJITA Tomonori <>
Signed-off-by: David S. Miller <>
12 years agoMerge branch 'master' of git://
David S. Miller [Sat, 2 Apr 2011 00:15:25 +0000 (17:15 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

12 years agoMerge branch 'release' of git://
Linus Torvalds [Fri, 1 Apr 2011 20:29:22 +0000 (13:29 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://
  [IA64] fix build warning: argument 1 of 'irqd_irq_disabled'

12 years agoMerge branch 'rcu/urgent' of git://
Ingo Molnar [Fri, 1 Apr 2011 19:14:04 +0000 (21:14 +0200)]
Merge branch 'rcu/urgent' of git://git./linux/kernel/git/paulmck/linux-2.6-rcu into core/urgent

12 years ago[IA64] fix build warning: argument 1 of 'irqd_irq_disabled'
Tony Luck [Fri, 1 Apr 2011 17:56:03 +0000 (10:56 -0700)]
[IA64] fix build warning: argument 1 of 'irqd_irq_disabled'

In commit f5e5bf088bd3d30990efb7429aaf9f1e5134ffd6
  ia64: Use irqd_irq_disabled() instead of desc->status access

Thomas forgot to convert from irq to *irq_data.

Add a call to irq_get_irq_data() to fix that.

Signed-off-by: Tony Luck <>
12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Fri, 1 Apr 2011 16:14:52 +0000 (09:14 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://
  ALSA: pcm: fix infinite loop in snd_pcm_update_hw_ptr0()
  ALSA: HDA: Add dock mic quirk for Lenovo Thinkpad X220
  ALSA: ens1371: fix Creative Ectiva support
  ALSA: firewire-speakers: fix hang when unplugging a running device
  ASoC: Fix CODEC device name for Corgi
  ALSA: hda - Fix pin-config of Gigabyte mobo
  ASoC: imx: fix burstsize for DMA
  ASoC: imx: set watermarks for mx2-dma
  ASoC: twl6040: Return -ENOMEM if create_singlethread_workqueue fails
  ASoC: tlv320dac33: Restore L/R DAC power control register
  ASoC: Explicitly say registerless widgets have no register
  ASoC: tlv320dac33: Fix inconsistent spinlock usage

12 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Fri, 1 Apr 2011 16:02:23 +0000 (18:02 +0200)]
Merge branch 'fix/asoc' into for-linus

12 years agoALSA: pcm: fix infinite loop in snd_pcm_update_hw_ptr0()
Kelly Anderson [Fri, 1 Apr 2011 09:58:25 +0000 (11:58 +0200)]
ALSA: pcm: fix infinite loop in snd_pcm_update_hw_ptr0()

When period interrupts are disabled, snd_pcm_update_hw_ptr0() compares
the current time against the time estimated for the current hardware
pointer to detect xruns.  The somewhat fuzzy threshold in the while loop
makes it possible that hdelta becomes negative; the comparison being
done with unsigned types then makes the loop go through the entire 263
negative range, and, depending on the value, never reach an unsigned
value that is small enough to stop the loop.  Doing this with interrupts
disabled results in the machine locking up.

To prevent this, ensure that the loop condition uses signed types for
both operands so that the comparison is correctly done.

Many thanks to Kelly Anderson for debugging this.

Reported-by: Nix <>
Reported-by: "Christopher K." <>
Reported-and-tested-by: Kelly Anderson <>
Signed-off-by: Kelly Anderson <>
[cl: remove unneeded casts; use a temp variable]
Signed-off-by: Clemens Ladisch <>
Cc: 2.6.38 <>
Signed-off-by: Takashi Iwai <>
12 years agoMerge branch 'merge' of git://
Linus Torvalds [Fri, 1 Apr 2011 15:57:02 +0000 (08:57 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://
  kdump: Allow shrinking of kdump region to be overridden
  powerpc/pmac/smp: Remove no-longer needed preempt workaround
  powerpc/smp: Increase vdso_data->processorCount, not just decrease it
  powerpc/smp: Create idle threads on demand and properly reset them
  powerpc/smp: Don't expose per-cpu "cpu_state" array
  powerpc/pmac/smp: Fix CPU hotplug crashes on some machines
  powerpc/smp: Add a smp_ops->bringup_up() done callback
  powerpc/pmac: Rename cpu_state in therm_pm72 to avoid collision
  powerpc/pmac/smp: Properly NAP offlined CPU on G5
  powerpc/pmac/smp: Remove HMT changes for PowerMac offline code
  powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one file
  powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bit
  powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32
  powerpc/pmac/smp: Fix 32-bit PowerMac cpu_die
  powerpc/smp: Remove unused smp_ops->cpu_enable()
  powerpc/smp: Remove unused generic_cpu_enable()
  powerpc/smp: Fix generic_mach_cpu_die()
  powerpc/smp: soft-replugged CPUs must go back to start_secondary
  powerpc: Make decrementer interrupt robust against offlined CPUs

12 years agoMerge git://
Linus Torvalds [Fri, 1 Apr 2011 15:54:14 +0000 (08:54 -0700)]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://
  sparc32: Pass task_struct to schedule_tail() in ret_from_fork
  apbuart: Depend upon sparc.
  sparc64: Fix section mis-match errors.
  sparc32,leon: Fixed APBUART frequency detection
  sparc32, leon: APBUART driver must use archdata to get IRQ number
  sparc: Hook up syncfs system call.

12 years agoMerge git://
Linus Torvalds [Fri, 1 Apr 2011 15:53:50 +0000 (08:53 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://
  appletalk: Fix OOPS in atalk_release().
  mlx4: Fixing bad size of event queue buffer
  mlx4: Fixing use after free
  bonding:typo in comment
  sctp: Pass __GFP_NOWARN to hash table allocation attempts.
  connector: convert to synchronous netlink message processing
  fib: add rtnl locking in ip_fib_net_exit
  atm/solos-pci: Don't flap VCs when carrier state changes
  atm/solos-pci: Don't include frame pseudo-header on transmit hex-dump
  atm/solos-pci: Use VPI.VCI notation uniformly.
  Atheros, atl2: Fix mem leaks in error paths of atl2_set_eeprom
  netdev: fix mtu check when TSO is enabled
  net/usb: Ethernet quirks for the LG-VL600 4G modem
  phylib: phy_attach_direct: phy_init_hw can fail, add cleanup
  bridge: mcast snooping, fix length check of snooped MLDv1/2
  via-ircc: Pass PCI device pointer to dma_{alloc, free}_coherent()
  via-ircc: Use pci_{get, set}_drvdata() instead of static pointer variable
  net: gre: provide multicast mappings for ipv4 and ipv6
  bridge: Fix compilation warning in function br_stp_recalculate_bridge_id()
  net: Fix warnings caused by MAX_SKB_FRAGS change.

12 years agorcu: create new rcu_access_index() and use in mce
Paul E. McKenney [Fri, 1 Apr 2011 14:15:14 +0000 (07:15 -0700)]
rcu: create new rcu_access_index() and use in mce

The MCE subsystem needs to sample an RCU-protected index outside of
any protection for that index.  If this was a pointer, we would use
rcu_access_pointer(), but there is no corresponding rcu_access_index().
This commit therefore creates an rcu_access_index() and applies it
to MCE.

Signed-off-by: Paul E. McKenney <>
Tested-by: Zdenek Kabelac <>
12 years agomicroblaze: Fix ftrace
Michal Simek [Fri, 18 Mar 2011 12:52:27 +0000 (13:52 +0100)]
microblaze: Fix ftrace

- Do not trace idle loop which takes a lot time
- Fix cache handling in generic ftrace code
- Do not trace lib functions ashldi3, ashrdi3, lshrdi3
  Functions are called from generic ftrace code which
  can't be traced

Signed-off-by: Michal Simek <>
12 years agomicroblaze: Wire up new syscalls
Michal Simek [Thu, 31 Mar 2011 06:11:47 +0000 (08:11 +0200)]
microblaze: Wire up new syscalls

Hook up name_to_handle_at, open_by_handle_at, clock_adjtime, syncfs

Signed-off-by: Michal Simek <>
12 years agomicroblaze: Fix level/edge irq sensibility
Michal Simek [Wed, 30 Mar 2011 11:13:38 +0000 (13:13 +0200)]
microblaze: Fix level/edge irq sensibility

"microblaze: Convert to new irq function names"
sha (4adc192ec7d977c74c750320f289af9d61c1caca)
"microblaze: Use generic show_interrupts()"

should also setup edge/level in irq_set_chip_and_handler_name
name parameter.

Error log:
~ # cat /proc/interrupts
  2:          2  Xilinx INTC-Xilinx INTC  eth0
  3:          2  Xilinx INTC-Xilinx INTC  eth0
  4:        241  Xilinx INTC-Xilinx INTC  timer
  6:        108  Xilinx INTC-Xilinx INTC  serial

~ # cat /proc/interrupts
  2:          2  Xilinx INTC-level     eth0
  3:          2  Xilinx INTC-level     eth0
  4:        238  Xilinx INTC-edge      timer
  6:        108  Xilinx INTC-level     serial

Signed-off-by: Michal Simek <>
Acked-by: Thomas Gleixner <>

v2: Fix exchanged edge and level

12 years agoInput: wacom - add support for Lenovo tablet ID (0xE6)
Manoj Iyer [Fri, 1 Apr 2011 05:39:43 +0000 (22:39 -0700)]
Input: wacom - add support for Lenovo tablet ID (0xE6)

Signed-off-by: Manoj Iyer <>
Acked-by: Ping Cheng <>
Signed-off-by: Dmitry Torokhov <>
12 years agokdump: Allow shrinking of kdump region to be overridden
Anton Blanchard [Wed, 25 Aug 2010 00:22:58 +0000 (10:22 +1000)]
kdump: Allow shrinking of kdump region to be overridden

On ppc64 the crashkernel region almost always overlaps an area of firmware.
This works fine except when using the sysfs interface to reduce the kdump
region. If we free the firmware area we are guaranteed to crash.

Rename free_reserved_phys_range to crash_free_reserved_phys_range and make
it a weak function so we can override it.

Signed-off-by: Anton Blanchard <>
Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/pmac/smp: Remove no-longer needed preempt workaround
Benjamin Herrenschmidt [Tue, 8 Mar 2011 03:57:26 +0000 (14:57 +1100)]
powerpc/pmac/smp: Remove no-longer needed preempt workaround

The generic code properly re-initializes the preempt count in the
idle thread now

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/smp: Increase vdso_data->processorCount, not just decrease it
Benjamin Herrenschmidt [Tue, 8 Mar 2011 03:49:33 +0000 (14:49 +1100)]
powerpc/smp: Increase vdso_data->processorCount, not just decrease it

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/smp: Create idle threads on demand and properly reset them
Benjamin Herrenschmidt [Tue, 8 Mar 2011 03:40:04 +0000 (14:40 +1100)]
powerpc/smp: Create idle threads on demand and properly reset them

Instead of creating idle threads at boot for all possible CPUs, we
create them on demand, like x86 or ARM, and we properly call init_idle
to re-initialize an idle thread when a CPU was unplugged and is now

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/smp: Don't expose per-cpu "cpu_state" array
Benjamin Herrenschmidt [Thu, 31 Mar 2011 22:23:37 +0000 (09:23 +1100)]
powerpc/smp: Don't expose per-cpu "cpu_state" array

Instead, keep it static, expose an accessor and use that from
the PowerMac code. Avoids easy namespace collisions and will
make it easier to consolidate with other implementations.

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/pmac/smp: Fix CPU hotplug crashes on some machines
Benjamin Herrenschmidt [Tue, 8 Mar 2011 02:54:50 +0000 (13:54 +1100)]
powerpc/pmac/smp: Fix CPU hotplug crashes on some machines

On some machines that use i2c to synchronize the timebases (such
as PowerMac7,2/7,3 G5 machines), hotplug CPU would crash when
putting back a new CPU online due to the underlying i2c bus being

This uses the newly added bringup_done() callback to move the close
along with other housekeeping calls, and adds a CPU notifier to
re-open the i2c bus around subsequent hotplug operations

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc/smp: Add a smp_ops->bringup_up() done callback
Benjamin Herrenschmidt [Tue, 8 Mar 2011 02:50:37 +0000 (13:50 +1100)]
powerpc/smp: Add a smp_ops->bringup_up() done callback

This allows us to stop abusing smp_ops->setup_cpu() for cleanup
tasks that have to take place after the initial boot time CPU

Signed-off-by: Benjamin Herrenschmidt <>