distinguish between the dropped and consumed skb, not assume the skb
is consumed always
Cc: Thomas Graf <tgraf@noironetworks.com>
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
here's a couple of display regression fixes for 3.17.
* tag 'drm-intel-fixes-2014-09-03' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix lock dropping in intel_tv_detect()
drm/i915: handle G45/GM45 pulse detection connected state.
Pull input subsystem updates from Dmitry Torokhov:
"A fix for MT breakage, enhancement to Elantech PS/2 driver and a
couple of assorted fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elantech - add support for trackpoint found on some v3 models
Input: elantech - reset the device when elantech probe fails
Input: ALPS - suppress message about 'Unknown touchpad'
Input: fix used slots detection breakage
Input: sparc - i8042-sparcio.h: fix unused kbd_res warning
Input: atmel_mxt_ts - improve description of gpio-keymap property
Several bug fixes for issues that have been lurking for a while:
- Check that devices haven't set the flag saying they only support
register at a time operation while we're doing cache syncs, otherwise
we fail to restore caches.
- Ensure that we don't mark all registers on devices using format_write()
as cacheable, avoiding adding a cache of things like reset registers
which we don't want to rewrite during cache sync.
- Make sure we create the debugfs files in the correct directory.
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Merge tag 'regmap-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"Several bug fixes for issues that have been lurking for a while:
- Check that devices haven't set the flag saying they only support
register at a time operation while we're doing cache syncs,
otherwise we fail to restore caches
- Ensure that we don't mark all registers on devices using
format_write() as cacheable, avoiding adding a cache of things like
reset registers which we don't want to rewrite during cache sync
- Make sure we create the debugfs files in the correct directory"
* tag 'regmap-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Don't attempt block writes when syncing cache on single_rw devices
regmap: Fix handling of volatile registers for format_write() chips
regmap: Fix regcache debugfs initialization
On the GP EVM, the ambient light sensor is limited to 100KHz on the
I2C bus.
So use 100kHz for I2C on the GP EVM due to this limitation on the
ambient light sensor.
Reported-by: Aparna Balasubramanian <aparnab@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The 8th NAND partition should be named "NAND.u-boot-env.backup1"
instead of "NAND.u-boot-env". This is to be consistent with other
TI boards as well as u-boot.
CC: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The I2C3 pins are taken from pads E21 (GPIO6_14) and
F20 (GPIO6_15). Use the right pinmux register and mode.
Also set the I2C3 bus frequency to a safer 400KHz than
3.4Mhz.
CC: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
There is a following AB-BA dependency between cpu_hotplug.lock and
cpuidle_lock:
1) cpu_hotplug.lock -> cpuidle_lock
enable_nonboot_cpus()
_cpu_up()
cpu_hotplug_begin()
LOCK(cpu_hotplug.lock)
cpu_notify()
...
acpi_processor_hotplug()
cpuidle_pause_and_lock()
LOCK(cpuidle_lock)
2) cpuidle_lock -> cpu_hotplug.lock
acpi_os_execute_deferred() workqueue
...
acpi_processor_cst_has_changed()
cpuidle_pause_and_lock()
LOCK(cpuidle_lock)
get_online_cpus()
LOCK(cpu_hotplug.lock)
Fix this by reversing the order acpi_processor_cst_has_changed() does
thigs -- let it first execute the protection against CPU hotplug by
calling get_online_cpus() and obtain the cpuidle lock only after that (and
perform the symmentric change when allowing CPUs hotplug again and
dropping cpuidle lock).
Spotted by lockdep.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The _SUN device indentification object is not guaranteed to return
the same value every time it is executed, so we should not cache its
return value, but rather execute it every time as needed. If it is
cached, an incorrect stale value may be used in some situations.
This issue was exposed by commit 202317a573 (ACPI / scan: Add
acpi_device objects for all device nodes in the namespace). Fix it
by avoiding to cache the return value of _SUN.
Fixes: 202317a573 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace)
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The current code just returns -EINVAL because mode can't be equal to
both 1 and 2.
Also this function is messy so I have cleaned it up:
1) Remove initializers like "int time = -1". Initializing variables to
garbage values turns off GCC's uninitialized variable warnings so it
can lead to bugs.
2) Use kstrtoint() instead of sscanf().
3) Use SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO instead of magic numbers 1
and 2.
4) Don't check for "mode == -1" because that can't happen.
5) Preserve the error code from toshiba_kbd_illum_status_set().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Pull f2fs bug fixes from Jaegeuk Kim:
"This series includes patches to:
- fix recovery routines
- fix bugs related to inline_data/xattr
- fix when casting the dentry names
- handle EIO or ENOMEM correctly
- fix memory leak
- fix lock coverage"
* tag 'for-f2fs-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (28 commits)
f2fs: reposition unlock_new_inode to prevent accessing invalid inode
f2fs: fix wrong casting for dentry name
f2fs: simplify by using a literal
f2fs: truncate stale block for inline_data
f2fs: use macro for code readability
f2fs: introduce need_do_checkpoint for readability
f2fs: fix incorrect calculation with total/free inode num
f2fs: remove rename and use rename2
f2fs: skip if inline_data was converted already
f2fs: remove rewrite_node_page
f2fs: avoid double lock in truncate_blocks
f2fs: prevent checkpoint during roll-forward
f2fs: add WARN_ON in f2fs_bug_on
f2fs: handle EIO not to break fs consistency
f2fs: check s_dirty under cp_mutex
f2fs: unlock_page when node page is redirtied out
f2fs: introduce f2fs_cp_error for readability
f2fs: give a chance to mount again when encountering errors
f2fs: trigger release_dirty_inode in f2fs_put_super
f2fs: don't skip checkpoint if there is no dirty node pages
...
Pull key subsystem fixes from James Morris:
"Fixes for the keys subsystem, one of which addresses a use-after-free
bug"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
PEFILE: Relax the check on the length of the PKCS#7 cert
KEYS: Fix use-after-free in assoc_array_gc()
KEYS: Fix public_key asymmetric key subtype name
KEYS: Increase root_maxkeys and root_maxbytes sizes
Another handful of arm64 fixes here:
- A few fixes for real issues found by smatch (after Dan's talk at KS)
- Revert the /proc/cpuinfo changes merged during the merge window.
We've opened a can of worms here, so we need to find out where we
stand before we change this interface.
- Implement KSTK_ESP for compat tasks, otherwise 32-bit Android gets
confused wondering where its [stack] has gone
- Misc fixes (fpsimd context handling, crypto, ...)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull more arm64 fixes from Will Deacon:
"Another handful of arm64 fixes here. They address some issues found
by running smatch on the arch code (ignoring the false positives) and
also stop 32-bit Android from losing track of its stack.
There's one additional irq migration fix in the pipeline, but it came
in after I'd tagged and tested this set.
- a few fixes for real issues found by smatch (after Dan's talk at KS)
- revert the /proc/cpuinfo changes merged during the merge window.
We've opened a can of worms here, so we need to find out where we
stand before we change this interface.
- implement KSTK_ESP for compat tasks, otherwise 32-bit Android gets
confused wondering where its [stack] has gone
- misc fixes (fpsimd context handling, crypto, ...)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
Revert "arm64: cpuinfo: print info for all CPUs"
arm64: fix bug for reloading FPSIMD state after cpu power off
arm64: report correct stack pointer in KSTK_ESP for compat tasks
arm64: Add brackets around user_stack_pointer()
arm64: perf: don't rely on layout of pt_regs when grabbing sp or pc
arm64: ptrace: fix compat reg getter/setter return values
arm64: ptrace: fix compat hardware watchpoint reporting
arm64: Remove unused variable in head.S
arm64/crypto: remove redundant update of data
Pull LED fix from Bryan Wu:
"Hugh, Jiri and many other people found a kernel oops due to a LED
change merged recently. Now the right fix might just revert it and
avoid the kernel oops"
* 'leds-fixes-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
Revert "leds: convert blink timer to workqueue"
A few more driver specific fixes on top of the currently pending fixes
(which are already in your tree but not Linus').
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Merge tag 'asoc-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.17
A few more driver specific fixes on top of the currently pending fixes
(which are already in your tree but not Linus').
Thanks to Dan Carpenter for extending smatch to find bugs like this.
(This was found using a development version of smatch.)
Fixes: 36de928641
Reported-by: Dan Carpenter <dan.carpenter@oracle.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Pull an RCU fix from Paul E. McKenney:
"This series contains a single commit fixing an initialization bug
reported by Amit Shah and fixed by Pranith Kumar (and tested by Amit).
This bug results in a boot-time hang in callback-offloaded configurations
where callbacks were posted before the offloading ('rcuo') kthreads
were created."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
fc95ca7284 introduces a memset in
kvmppc_alloc_hpt since the general CMA doesn't clear the memory it
allocates.
However, the size argument passed to memset is computed from a signed value
and its signed bit is extended by the cast the compiler is doing. This lead
to extremely large size value when dealing with order value >= 31, and
almost all the memory following the allocated space is cleaned. As a
consequence, the system is panicing and may even fail spawning the kdump
kernel.
This fix makes use of an unsigned value for the memset's size argument to
avoid sign extension. Among this fix, another shift operation which may
lead to signed extended value too is also fixed.
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Two vmwgfx fixes, marked for stable as well
* 'vmwgfx-fixes-3.17' of git://people.freedesktop.org/~thomash/linux:
drm/vmwgfx: Fix a potential infinite spin waiting for fifo idle
drm/vmwgfx: Fix an incorrect OOM return value
Relax the check on the length of the PKCS#7 cert as it appears that the PE
file wrapper size gets rounded up to the nearest 8.
The debugging output looks like this:
PEFILE: ==> verify_pefile_signature()
PEFILE: ==> pefile_parse_binary()
PEFILE: checksum @ 110
PEFILE: header size = 200
PEFILE: cert = 968 @547be0 [68 09 00 00 00 02 02 00 30 82 09 56 ]
PEFILE: sig wrapper = { 968, 200, 2 }
PEFILE: Signature data not PKCS#7
The wrapper is the first 8 bytes of the hex dump inside []. This indicates a
length of 0x968 bytes, including the wrapper header - so 0x960 bytes of
payload.
The ASN.1 wrapper begins [ ... 30 82 09 56 ]. That indicates an object of size
0x956 - a four byte discrepency, presumably just padding for alignment
purposes.
So we just check that the ASN.1 container is no bigger than the payload and
reduce the recorded size appropriately.
Whilst we're at it, allow shorter PKCS#7 objects that manage to squeeze within
127 or 255 bytes. It's just about conceivable if no X.509 certs are included
in the PKCS#7 message.
Reported-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Peter Jones <pjones@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
An edit script should be considered inaccessible by a function once it has
called assoc_array_apply_edit() or assoc_array_cancel_edit().
However, assoc_array_gc() is accessing the edit script just after the
gc_complete: label.
Reported-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
cc: shemming@brocade.com
cc: paulmck@linux.vnet.ibm.com
Cc: stable@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
The length of the name of an asymmetric key subtype must be stored in struct
asymmetric_key_subtype::name_len so that it can be matched by a search for
"<subkey_name>:<partial_fingerprint>". Fix the public_key subtype to have
name_len set.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Now that NFS client uses the kernel key ring facility to store the NFSv4
id/gid mappings, the defaults for root_maxkeys and root_maxbytes need to be
substantially increased.
These values have been soak tested:
https://bugzilla.redhat.com/show_bug.cgi?id=1033708#c73
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
It should have been removed with commit d1b6848590
("cpufreq / intel_pstate: Optimize intel_pstate_set_policy")
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Many CPUs do not support complete set of RAPL domains, as a
result this detection failed message is very misleading and
can be annoying.
[ 5.082632] intel_rapl: RAPL domain core detection failed
[ 5.088370] intel_rapl: RAPL domain uncore detection failed
So lower the warning message to info and only print out the RAPL
domains that are supported.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
I've confirmed that monitoring the package power usage as well as setting power
limits appear to be working as expected. Supports the package and dram domains.
Tested aginst cpu:
Intel(R) Xeon(R) CPU E5-2650 v3 @ 2.30GHz
Signed-off-by: Jason Baron <jbaron@akamai.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
After commit d431cbc53c (PM / sleep: Simplify sleep states sysfs
interface code) the pm_states[] array is not populated initially,
which causes setup_test_suspend() to always fail and the suspend
testing during boot doesn't work any more.
Fix the problem by using pm_labels[] instead of pm_states[] in
setup_test_suspend() and storing a pointer to the label of the
sleep state to test rather than the number representing it,
because the connection between the state numbers and labels is
only established by suspend_set_ops().
Fixes: d431cbc53c (PM / sleep: Simplify sleep states sysfs interface code)
Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
On the Toshiba Tecra Z40, after a suspend-to-disk, some FN hotkeys
driven by toshiba_acpi are not functional.
Calling the ACPI object ENAB on resume makes them back alive.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This is a follow-up patch to commit 49458e8308 ("ideapad-laptop:
Constify DMI table and other r/o variables") to do what its commit
message says. The actual commit differs from the patch posted at
https://www.mail-archive.com/platform-driver-x86@vger.kernel.org/msg05340.html
significantly, probably due to a bad merge conflict resolution. Fix up
the mess and constify the DMI table for real and fix the bogus
double-const of ideapad_rfk_data[].
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
During allocation and initialization of the network driver structures,
the wrong pointer is used to initialize a spin lock. Fix the spin lock
initialization by using the proper pointer.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The user_skb maybe be leaked if the operation on it failed and codes
skipped into the label "out:" without calling genlmsg_unicast.
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
make defconfig reports:
warning: (NETFILTER_XT_TARGET_LOG) selects NF_LOG_IPV6 which has unmet direct dependencies (NET && INET && IPV6 && NETFILTER && NETFILTER_ADVANCED)
Fixes: d79a61d netfilter: NETFILTER_XT_TARGET_LOG selects NF_LOG_*
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
pull request: Netfilter/IPVS fixes for net
The following patchset contains seven Netfilter fixes for your net
tree, they are:
1) Make the NAT infrastructure independent of x_tables, some users are
already starting to test nf_tables with NAT without enabling x_tables.
Without this patch for Kconfig, there's a superfluous dependency
between NAT and x_tables.
2) Allow to use 0 in the cgroup match, the kernel rejects with -EINVAL
with no good reason. From Daniel Borkmann.
3) Select CONFIG_NF_NAT from the nf_tables NAT expression, this also
resolves another NAT dependency with x_tables.
4) Use HAVE_JUMP_LABEL instead of CONFIG_JUMP_LABEL in the Netfilter hook
code as elsewhere in the kernel to resolve toolchain problems, from
Zhouyi Zhou.
5) Use iptunnel_handle_offloads() to set up tunnel encapsulation
depending on the offload capabilities, reported by Alex Gartrell
patch from Julian Anastasov.
6) Fix wrong family when registering the ip_vs_local_reply6() hook,
also from Julian.
7) Select the NF_LOG_* symbols from NETFILTER_XT_TARGET_LOG. Rafał
Miłecki reported that when jumping from 3.16 to 3.17-rc, his log
target is not selected anymore due to changes in the previous
development cycle to accomodate the full logging support for
nf_tables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Some hosts can be both little and big endian.
In certain scenarios a big endian kernel can kexec a little endian kernel.
This patch fixes this case from both ends:
1) Return endianity to original values on shutdown (in case little endian kernel boots after we shutdown).
2) Do not rely on HW reset values when loading driver in little endian kernel
but configure them explicitly (in case previous kernel was big endian and did not reset the HW).
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When qeth device is queried for ethtool data, hardware operation
is performed to extract the necessary information from the card.
If the card is not online at the moment (e.g. it is undergoing
recovery), this operation produces undesired effects like
temporarily freezing the system. This patch prevents execution
of the hardware query operation when the card is not online.
In such case, ioctl() operation returns error with errno ENODEV.
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Calxeda 1G/10G XGMAC Ethernet support should be available only on
Calxeda ECX-1000/2000 (Highbank/Midway) platforms.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Renesas SuperH Ethernet support should be available only on
Renesas ARM SoCs and SuperH architecture.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a link is already up, the following sequence makes the kernel
block completely:
ip link set dev eth0 down
ip link set dev eth0 up
This is because on suspended phy, the following lines
__lpc_eth_reset(pldat);
__lpc_eth_init(pldat);
make the LPC ethernet core block (see LPC32x0 manual). The PHY needs to be
(re-)activated low-level first.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch fixes race conditions between PCI error recovery callbacks and
potential ifup/ifdown.
First, if ifup (tg3_open) is called between tg3_io_error_detected() and
tg3_io_resume() then tp->timer is armed twice before expiry. Once during
tg3_open() and again during tg3_io_resume(). This results in BUG
at kernel/time/timer.c:945.
Second, if ifdown (tg3_close) is called between tg3_io_error_detected()
and tg3_io_resume() then tg3_napi_disable() is called twice without
a tg3_napi_enable between. Once during tg3_io_error_detected() and again
during tg3_close(). The tg3_io_resume() then hangs on rtnl_lock().
v2: Added logging messages per Prashant's request
Cc: Prashant Sreedharan <prashant@broadcom.com>
Cc: Michael Chan <mchan@broadcom.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We ran into a case on ppc64 running mariadb where io_getevents would
return zeroed out I/O events. After adding instrumentation, it became
clear that there was some missing synchronization between reading the
tail pointer and the events themselves. This small patch fixes the
problem in testing.
Thanks to Zach for helping to look into this, and suggesting the fix.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Cc: stable@vger.kernel.org
Analogous to commit 8858d88a25
that fixed commit 70b41abc15
"ARM: ux500: move MSP pin control to the device tree"
accidentally activated MSP2, giving rise to a boot scroll
scream as the kernel attempts to probe a driver for it and
fails to obtain DMA channel 14.
For some reason I forgot to fix this on the Snowball. Fix
this up by marking the node disabled again.
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
The driver was not bound checking the received length byte to ensure it was within the
the buffer size that is allocated for SMBus blocks. This resulted in buffer overflows
whenever an invalid length byte was received.
It also failed to ensure the length byte was not zero. If it received zero, it would end up
in an infinite loop as the at91_twi_read_next_byte function returned immediately without
allowing RHR to be read to clear the RXRDY interrupt.
Tested agaisnt a SMBus compliant battery.
Signed-off-by: Marek Roszko <mark.roszko@gmail.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
