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If we leave the registers in a conflicting state then when we attempt
to teardown the active mode, we will not disable the pipes and planes
in the correct order -- leaving a plane reading from a disabled pipe and
possibly leading to undefined behaviour.
Reported-and-tested-by: Andy Whitcroft <apw@canonical.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32078
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
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This workaround only applies to Ironlake.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
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The pipe is always set to 8BPC, but here we were leaving whatever
previous bits were set by the BIOS in place.
Signed-off-by: Eric Anholt <eric@anholt.net>
Tested-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (27 commits)
Staging: rt2870: Add USB ID for Buffalo Airstation WLI-UC-GN
staging: easycap needs smp_lock.h, fixes build error
Staging: batman-adv: ensure that eth_type_trans gets linear memory
Staging: batman-adv: Don't remove interface with spinlock held
staging: brcm80211: updated maintainers contact information
staging: fix winbond build, needs delay.h
Staging: line6: fix up my fixup for some sysfs attribute permissions
Staging: zram: fix up my fixup for some sysfs attribute permissions
Staging: udlfb: fix up my fixup for some sysfs attribute permissions
Staging: samsung-laptop: fix up my fixup for some sysfs attribute permissions
Staging: iio: adis16220: fix up my fixup for some sysfs attribute permissions
Staging: frontier: fix up my fixup for some sysfs attribute permissions
Staging: asus_oled: fix up my fixup for some sysfs attribute permissions
staging: spectra: fix build error
Staging: intel_sst: fix memory leak
Staging: rtl8712: signedness bug in init
staging: rtl8187se: Change panic to warn when RF switch turned off
staging: comedi: fix memory leak
Staging: quickstart: free after input_unregister_device()
Staging: speakup: free after input_unregister_device()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
uio: Change mail address of Hans J. Koch
driver core: prune docs about device_interface
driver core: the development tree has switched to git
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
serial: mfd: adjust the baud rate setting
TTY: open/hangup race fixup
TTY: don't allow reopen when ldisc is changing
NET: wan/x25, fix ldisc->open retval
TTY: ldisc, fix open flag handling
serial8250: Mark console as CON_ANYTIME
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: fix autosuspend bug in usb-serial
USB: ehci: disable LPM and PPCD for nVidia MCP89 chips
USB: serial: ftdi_sio: Vardaan USB RS422/485 converter PID added
USB: yurex: add .llseek fop to file_operations
USB: ftdi_sio: Add ID for RT Systems USB-29B radio cable
usb: musb: do not use dma for control transfers
usb: musb: gadget: fix compilation warning
usb: musb: clear RXCSR_AUTOCLEAR before PIO read
usb: musb: unmap dma buffer when switching to PIO
xhci: Don't let the USB core disable SuperSpeed ports.
xhci: Setup array of USB 2.0 and USB 3.0 ports.
xhci: Fix reset-device and configure-endpoint commands
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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
watchdog: it8712f_wdt: add note to Kconfig
watchdog: gef_wdt: include fs.h
watchdog: bcm63xx_wdt: improve platform part.
watchdog: iTCO_wdt: TCO Watchdog patch for Intel Patsburg PCH
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB: Fix information leak in marshalling code
IB/pack: Remove some unused code added by the IBoE patches
IB/mlx4: Fix IBoE link state
IB/mlx4: Fix IBoE reported link rate
mlx4_core: Workaround firmware bug in query dev cap
IB/mlx4: Fix memory ordering of VLAN insertion control bits
MAINTAINERS: Update NetEffect entry
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: only run xfs_error_test if error injection is active
xfs: avoid moving stale inodes in the AIL
xfs: delayed alloc blocks beyond EOF are valid after writeback
xfs: push stale, pinned buffers on trylock failures
xfs: fix failed write truncation handling.
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git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
regulator: fix kernel-doc for set_consumer_device_supply
regulator: enable supply regulator only when use count is zero
regulator: twl-regulator - fix twlreg_set_mode
regulator: lock supply in regulator enable
regulator: Return proper error for regulator_register()
regulator: Ensure enough delay time for enabling regulator
regulator: Remove a redundant device_remove_file call in create_regulator
regulator: Staticise mc13783_powermisc_rmw()
regulator: regulator disable supply fix
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
[media] v4l: Remove module_name argument to the v4l2_i2c_new_subdev* functions
[media] v4l: Remove hardcoded module names passed to v4l2_i2c_new_subdev* (2)
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'rbd-sysfs' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: replace the rbd sysfs interface
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* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: fix parsing of hostname in dfs referrals
cifs: display fsc in /proc/mounts
cifs: enable fscache iff fsc mount option is used explicitly
cifs: allow fsc mount option only if CONFIG_CIFS_FSCACHE is set
cifs: Handle extended attribute name cifs_acl to generate cifs acl blob (try #4)
cifs: Misc. cleanup in cifsacl handling [try #4]
cifs: trivial comment fix for cifs_invalidate_mapping
[CIFS] fs/cifs/Kconfig: CIFS depends on CRYPTO_HMAC
cifs: don't take extra tlink reference in initiate_cifs_search
cifs: Percolate error up to the caller during get/set acls [try #4]
cifs: fix another memleak, in cifs_root_iget
cifs: fix potential use-after-free in cifs_oplock_break_put
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On some motherboards the it8712f watchdog does not work unless
the game port was enabled. see Bug 13140. We therefor add a note
to Kconfig.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Add missing include "linux/fs.h".
This fixes compile failure.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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* fix devinit and devexit sections
* fix platform removal code so that the iounmap happens after the removal of the timer.
* changes the reboot_notifier by a platform shutdown method.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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This patch adds an additional LPC Controller DeviceID for the Intel Patsburg PCH for TCO Watchdog.
Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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ib_ucm_init_qp_attr() and ucma_init_qp_attr() pass struct ib_uverbs_qp_attr
with reserved, qp_state, {ah_attr,alt_ah_attr}{reserved,->grh.reserved}
fields uninitialized to copy_to_user(). This leads to leaking of
contents of kernel stack memory to userspace.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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Remove unused functions added by commit ff7f5aab354d ("IB/pack: IBoE UD
packet packing support").
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
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Use netif_running() and netif_carrier_ok() to report link state,
exactly as is done to report Ethernet link state in sysfs.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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The link rate is the product of the link speed in the link width. For
Etherent ports the rate is 10G, so we use 1 for the width and 4 for
speed to get the correct rate.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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ConnectX firmware is supposed to report the number blue flame
registers per page as log2 of the value. However, due to a firmware
bug, it reports actual number. This patch works around this by
checking if the number of registers calculated fits within a page. If
it does not, we use 8 registers per page.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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The new interface creates directories per mapped image
and under each it creates a subdir per available snapshot.
This allows keeping a cleaner interface within the sysfs
guidelines. The ABI documentation was updated too.
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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We must fully update the control segment before marking it as valid,
so that hardware doesn't start executing it before we're ready.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
[ Move VLAN control bit setting to before wmb(). - Roland ]
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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Correct web link as www.neteffect.com is no longer valid. Remove
Chien Tung as maintainer. I am moving on to other responsibilities at
Intel. Thanks for all the fish.
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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Recent tests writing lots of small files showed the flusher thread
being CPU bound and taking a long time to do allocations on a debug
kernel. perf showed this as the prime reason:
samples pcnt function DSO
_______ _____ ___________________________ _________________
224648.00 36.8% xfs_error_test [kernel.kallsyms]
86045.00 14.1% xfs_btree_check_sblock [kernel.kallsyms]
39778.00 6.5% prandom32 [kernel.kallsyms]
37436.00 6.1% xfs_btree_increment [kernel.kallsyms]
29278.00 4.8% xfs_btree_get_rec [kernel.kallsyms]
27717.00 4.5% random32 [kernel.kallsyms]
Walking btree blocks during allocation checking them requires each
block (a cache hit, so no I/O) call xfs_error_test(), which then
does a random32() call as the first operation. IOWs, ~50% of the
CPU is being consumed just testing whether we need to inject an
error, even though error injection is not active.
Kill this overhead when error injection is not active by adding a
global counter of active error traps and only calling into
xfs_error_test when fault injection is active.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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When an inode has been marked stale because the cluster is being
freed, we don't want to (re-)insert this inode into the AIL. There
is a race condition where the cluster buffer may be unpinned before
the inode is inserted into the AIL during transaction committed
processing. If the buffer is unpinned before the inode item has been
committed and inserted, then it is possible for the buffer to be
released and hence processthe stale inode callbacks before the inode
is inserted into the AIL.
In this case, we then insert a clean, stale inode into the AIL which
will never get removed by an IO completion. It will, however, get
reclaimed and that triggers an assert in xfs_inode_free()
complaining about freeing an inode still in the AIL.
This race can be avoided by not moving stale inodes forward in the AIL
during transaction commit completion processing. This closes the
race condition by ensuring we never insert clean stale inodes into
the AIL. It is safe to do this because a dirty stale inode, by
definition, must already be in the AIL.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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There is an assumption in the parts of XFS that flushing a dirty
file will make all the delayed allocation blocks disappear from an
inode. That is, that after calling xfs_flush_pages() then
ip->i_delayed_blks will be zero.
This is an invalid assumption as we may have specualtive
preallocation beyond EOF and they are recorded in
ip->i_delayed_blks. A flush of the dirty pages of an inode will not
change the state of these blocks beyond EOF, so a non-zero
deeelalloc block count after a flush is valid.
The bmap code has an invalid ASSERT() that needs to be removed, and
the swapext code has a bug in that while it swaps the data forks
around, it fails to swap the i_delayed_blks counter associated with
the fork and hence can get the block accounting wrong.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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As reported by Nick Piggin, XFS is suffering from long pauses under
highly concurrent workloads when hosted on ramdisks. The problem is
that an inode buffer is stuck in the pinned state in memory and as a
result either the inode buffer or one of the inodes within the
buffer is stopping the tail of the log from being moved forward.
The system remains in this state until a periodic log force issued
by xfssyncd causes the buffer to be unpinned. The main problem is
that these are stale buffers, and are hence held locked until the
transaction/checkpoint that marked them state has been committed to
disk. When the filesystem gets into this state, only the xfssyncd
can cause the async transactions to be committed to disk and hence
unpin the inode buffer.
This problem was encountered when scaling the busy extent list, but
only the blocking lock interface was fixed to solve the problem.
Extend the same fix to the buffer trylock operations - if we fail to
lock a pinned, stale buffer, then force the log immediately so that
when the next attempt to lock it comes around, it will have been
unpinned.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Since the move to the new truncate sequence we call xfs_setattr to
truncate down excessively instanciated blocks. As shown by the testcase
in kernel.org BZ #22452 that doesn't work too well. Due to the confusion
of the internal inode size, and the VFS inode i_size it zeroes data that
it shouldn't.
But full blown truncate seems like overkill here. We only instanciate
delayed allocations in the write path, and given that we never released
the iolock we can't have converted them to real allocations yet either.
The only nasty case is pre-existing preallocation which we need to skip.
We already do this for page discard during writeback, so make the delayed
allocation block punching a generic function and call it from the failed
write path as well as xfs_aops_discard_page. The callers are
responsible for ensuring that partial blocks are not truncated away,
and that they hold the ilock.
Based on a fix originally from Christoph Hellwig. This version used
filesystem blocks as the range unit.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms: add workaround for dce3 ddc line vbios bug
drm/radeon/kms: fix interlaced and doublescan handling
drm/radeon/kms: fix typos in disabled vbios code
Revert "drm/i915/dp: use VBT provided eDP params if available"
drm/i915: Clear pfit registers when not used by any outputs
drm: record monitor status in output_poll_execute
drm: Set connector DPMS status to ON in drm_crtc_helper_set_config
drm/i915: fix regression due to ba3d8d749b01548b9
Revert "drm/radeon/kms: fix typo in r600 cs checker"
drm/i915/sdvo: Always add a 30ms delay to make SDVO TV detection reliable
MAINTAINERS: INTEL DRM DRIVERS list (intel-gfx) is subscribers-only
drm/i915/sdvo: Always fallback to querying the shared DDC line
drm/i915: Handle pagefaults in execbuffer user relocations
drm/i915/sdvo: Only enable HDMI encodings only if the commandset is supported
drm/radeon/kms: fix resume regression for some r5xx laptops
drm/radeon/kms: fix regression in rs4xx i2c setup
drm/i915: Only save/restore cursor regs if !KMS
drm/i915: Prevent integer overflow when validating the execbuffer
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fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=23752
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc:stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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6xx/7xx was hitting the wrong BUS_CNTL reg and bits.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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* 'intel/drm-intel-fixes' of /ssd/git/drm-next:
Revert "drm/i915/dp: use VBT provided eDP params if available"
drm/i915: Clear pfit registers when not used by any outputs
drm/i915: fix regression due to ba3d8d749b01548b9
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* 'for_linus' of git://github.com/at91linux/linux-2.6-at91:
at91/board-yl-9200: fix typo in video support
atmel_spi: fix warning In function 'atmel_spi_dma_map_xfer'
at91/picotux200: remove commenting usb device and dataflash support
at91: rename rm9200ek and rm9200dk board file name
at91rm9200ek: fix warning: 'ek_mmc_data' defined but not used
at91rm9200dk: fix warning: 'dk_mmc_data' defined but not used
at91: Convert remaining boards to new-style UART initialization
at91: merge all at91rm9200 defconfig in one single file
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Note: this patch targets 2.6.37 and tries to be as simple as possible.
That is why it adds more copy-and-paste horror into fs/compat.c and
uglifies fs/exec.c, this will be cleanuped later.
compat_copy_strings() plays with bprm->vma/mm directly and thus has
two problems: it lacks the RLIMIT_STACK check and argv/envp memory
is not visible to oom killer.
Export acct_arg_size() and get_arg_page(), change compat_copy_strings()
to use get_arg_page(), change compat_do_execve() to do acct_arg_size(0)
as do_execve() does.
Add the fatal_signal_pending/cond_resched checks into compat_count() and
compat_copy_strings(), this matches the code in fs/exec.c and certainly
makes sense.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Brad Spengler published a local memory-allocation DoS that
evades the OOM-killer (though not the virtual memory RLIMIT):
http://www.grsecurity.net/~spender/64bit_dos.c
execve()->copy_strings() can allocate a lot of memory, but
this is not visible to oom-killer, nobody can see the nascent
bprm->mm and take it into account.
With this patch get_arg_page() increments current's MM_ANONPAGES
counter every time we allocate the new page for argv/envp. When
do_execve() succeds or fails, we change this counter back.
Technically this is not 100% correct, we can't know if the new
page is swapped out and turn MM_ANONPAGES into MM_SWAPENTS, but
I don't think this really matters and everything becomes correct
once exec changes ->mm or fails.
Reported-by: Brad Spengler <spender@grsecurity.net>
Reviewed-and-discussed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Previous baud rate setting code only has been tested with 3.5M/9600/
115200/230400/460800 bps, and recently we got a 3M bps device to test,
which needs to modify current MUL register setting, and with this
patch 2.5M/2M/1.5M/1M/0.5M should also work as they just use a MUL
value scale down from 3M's.
Also got some reference register setting from silicon guys for
different baud rates, which tries to keep the pre-scalar register value
to 16.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into work
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The DFS referral parsing code does a memchr() call to find the '\\'
delimiter that separates the hostname in the referral UNC from the
sharename. It then uses that value to set the length of the hostname via
pointer subtraction. Instead of subtracting the start of the hostname
however, it subtracts the start of the UNC, which causes the code to
pass in a hostname length that is 2 bytes too long.
Regression introduced in commit 1a4240f4.
Reported-and-Tested-by: Robbert Kouprie <robbert@exx.nl>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: Wang Lei <wang840925@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Steve French <sfrench@us.ibm.com>
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This patch (as1437) fixes a bug in the usb-serial autosuspend
handling. Since the usb-serial core now has autosuspend support, it
must set the .supports_autosuspend member in every serial driver it
registers. Otherwise the usb_autopm_get_interface() call won't work.
This fixes Bugzilla #23012.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: stable@kernel.org
Reported-by: Kevin Smith <thirdwiggin@gmail.com>
Reported-and-tested-by: Simon Gerber <gesimu@gmail.com>
Reported-and-tested-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Tested on MacBookAir3,1. Without this, we get EPROTO errors when
fetching device config descriptors.
Signed-off-by: Brian Tarricone <brian@tarricone.org>
Reported-by: Benoit Gschwind <gschwind@gnu-log.net>
Tested-by: Edgar Hucek <gimli@dark-green.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add the PID for the Vardaan Enterprises VEUSB422R3 USB to RS422/485
converter. It uses the same chip as the FTDI_8U232AM_PID 0x6001.
This should also work with the stable branches for:
2.6.31, 2.6.32, 2.6.33, 2.6.34, 2.6.35, 2.6.36
Signed-off-by: Jacques Viviers <jacques.viviers@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Default llseek operation behavior was changed by the patch named
"vfs: make no_llseek the default" after the yurex driver had been merged,
so the llseek to yurex is now ignored.
This patch add llseek fop with default_llseek to yurex driver
to catch up to the change.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Another variant of the RT Systems programming cable for ham radios.
Signed-off-by: Michael Stuermer <ms@mallorn.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When comparing filehandles in the helper nfs_same_file(), we should not be
using 'strncmp()': filehandles are not null terminated strings.
Instead, we should just use the existing helper nfs_compare_fh().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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