Use of RCU api makes vxlan code easier to understand. It also
fixes bug due to missing ACCESS_ONCE() on sk_user_data dereference.
In rare case without ACCESS_ONCE() compiler might omit vs on
sk_user_data dereference.
Compiler can use vs as alias for sk->sk_user_data, resulting in
multiple sk_user_data dereference in rcu read context which
could change.
CC: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Quite a few fixes here, mostly small driver specific ones. The stand
out thing is a fix for errors generating the documentation from Randy
Dunlap, otherwise unless you're using the driver in question there
should be no impact.
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Merge tag 'regulator-v3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Quite a few fixes here, mostly small driver specific ones.
The stand out thing is a fix for errors generating the documentation
from Randy Dunlap, otherwise unless you're using the driver in
question there should be no impact"
* tag 'regulator-v3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: ti-abb: Fix bias voltage glitch in transition to bypass mode
regulator: wm831x-ldo: Fix max_uV for gp_ldo and aldo linear range settings
regulator: wm8350: correct the max_uV of LDO
regulator: fix fatal kernel-doc error
regulator: palmas: Remove wrong comment for the equation calculating num_voltages
regulator: da9063: Fix PTR_ERR/ERR_PTR mismatch
regulator: palmas: configure enable time for LDOs
regulator: palmas: fix the n_voltages for smps to 122
Pull apparmor fixes from James Morris:
"Bugfixes for the Apparmor code for regressions introduced in the 3.12
pull request"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
apparmor: fix suspicious RCU usage warning in policy.c/policy.h
apparmor: Use shash crypto API interface for profile hashes
Pull assorted vfs fixes from Al Viro:
"A couple of bug fixes + removal of dead code in afs ->d_revalidate()"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
afs: dget_parent() can't return a negative dentry
ocfs2: needs ->d_lock to poke in ->d_parent->d_inode from ->d_revalidate()
sysv: Add forgotten superblock lock init for v7 fs
Since the patch "cpufreq: cpufreq-cpu0: NULL is a valid regulator", cpu_reg
contains an error value if the regulator is not set, instead of NULL.
Accordingly, fix the remaining check for non-NULL cpu_reg.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
'clk_round_rate' returns a negative error code upon failure. This
will never get detected by unsigned 'newfreq'. Make it signed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Recent commit 8fd37a4 (PM / hibernate: Create memory bitmaps after
freezing user space) broke the resume part of the user space driven
hibernation (s2disk), because I forgot that the resume utility
loaded the image into memory without freezing user space (it still
freezes tasks after loading the image). This means that during user
space driven resume we need to create the memory bitmaps at the
"device open" time rather than at the "freeze tasks" time, so make
that happen (that's a special case anyway, so it needs to be treated
in a special way).
Reported-and-tested-by: Ronald <ronald645@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull AVR32 fixes from Hans-Christian Egtvedt.
Fix build warnings and use the Kbuild infrastructure for generic headers
rather than doing it by hand.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
avr32: cast syscall_return to silence compiler warning
avr32: fix clockevents kernel warning
avr32: use Kbuild infrastructure to handle the asm-generic headers
Pull S+core fixes from Lennox Wu:
"These updates include updating information of maintainers, fix some
trivial errors, and add a necessary function for supporting ipv6"
* tag 'for-linus-20130929' of git://github.com/sctscore/official-linux:
Score: Update the information of Score maintaners
Score: Modify the Makefile of Score, remove -mlong-calls for compiling
Score: Implement the function csum_ipv6_magic
Score: The commit is for compiling successfully
Like we are doing on DDR0 we need to cleanly shutdown DDR1 if it is
used before rebooting.
If DDR1 is not initialized, we check it and avoid dereferencing its address.
Even by adding two more instructions, we are able to complete the procedure
within a single cache line.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Change my email to kernel.org which is easier for me to catch.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Take more drivers into maintain list of CSR SiRF SoC machines.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
HWMOD removal for MMC is breaking edma_start as the events are being manually
triggered due to unused channel list not being clear.
The above issue is fixed by reading the "dmas" property from the DT node if it
exists and clearing the bits in the unused channel list if the dma controller
used by any device is EDMA. For this purpose we use the of_* helpers to parse
the arguments in the dmas phandle list.
Also introduced is a minor clean up of a checkpatch error in old code.
Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Reported-by: Balaji T K <balajitk@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Nishanth Menon <nm@ti.com>
Cc: Pantel Antoniou <panto@antoniou-consulting.com>
Cc: Jason Kridner <jkridner@beagleboard.org>
Cc: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
On the TC2 testchip, when all CPUs in a cluster enter standbywfi
and commit a power down request, the power controller will wait
for standbywfil2 coming from L2 cache controller to shut the
cluster down.
By the time all CPUs in a cluster commit a power down request
and enter wfi, the power controller cannot backtrack, or put it
another way, a CPU must not be allowed to complete execution
independently of the power controller, the only way for it to
resume properly must be upon wake-up IRQ pending and subsequent
reset triggered from the power controller.
Current MCPM back-end for TC2 disables the GIC CPU IF only when
power down is committed through the tc2_pm_suspend() method, that
makes sense since a suspended CPU is still online and can receive
interrupts whereas a hotplugged CPU, since it is offline,
migrated all IRQs and shutdown the per-CPU peripherals, hence
their PPIs.
The flaw with this reasoning is the following. If all CPUs in
a clusters are entering a power down state either through CPU
idle or CPU hotplug, when the last man successfully completes
the MCPM power down sequence (and executes wfi), power controller
waits for L2 wfi signal to quiesce the cluster and shut it down.
If, when all CPUs are sitting in wfi, an online CPU hotplugs back
in one of the CPUs in the cluster being shutdown, that CPU
receives an IPI that causes wfi to complete (since tc2_pm_down()
method does not disable the GIC CPU IF in that case - CPU being
hotplugged out, not idle) and the power controller will never see
the stanbywfil2 signal coming from L2 that is required for
shutdown to happen and the system deadlocks.
Further to this issue, kexec hotplugs secondary CPUs out during
kernel reload/restart.
Because kexec may (deliberately) trash the old kernel text, it is
not OK for CPUs to follow the MCPM soft reboot path, since
instructions after the WFI may have been replaced by kexec.
If tc2_pm_down() does not disable the GIC cpu interface, there is a
race between CPU powerdown in the old kernel and the IPI from the
new kernel that triggers secondary boot, particularly if the
powerdown is slow (due to L2 cache cleaning for example). If the
new kernel wins the race, the affected CPU(s) will not really be
reset and may execute garbage after the WFI.
The only solution to this problem consists in disabling the GIC
CPU IF on a CPU committed to power down regardless of the power
down entry method (CPU hotplug or CPU idle). This way, CPU wake-up
is under power controller control, which prevents unexpected wfi
exit caused by a pending IRQ.
This patch moves the GIC CPU IF disable call in the TC2 MCPM
implementation from the tc2_pm_suspend() method to the
tc2_pm_down() method to fix the mentioned race condition(s).
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Tested-by: Dave Martin <Dave.Martin@arm.com> (for kexec)
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
* Remove unused #gpio-ranges-cells DT property
* Remove usage of deprecated #gpio-range-cells DT property
from GPIO R-Car
Property was deprecated in v3.11-rc2
* Correct ether pinctl naming for armadillo800eva board
Regression introduced in v3.10-rc5
* Add Micrel KSZ8041 PHY fixup to lager board
This resolves a problem that has been present since 3.11-rc2
* Update SDHI DT compatibility string to the <unit>-<soc> format
This makes compatibility strings consistent across all renesas
hardware which currently supports DT.
The bindings which are being updated where intorodiced on
a per-SoC basis starting in v3.8-rc7. They may have
been internally consistent when originally added.
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Merge tag 'renesas-fixes4-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
From Simon Horman:
Fourth Round of Renesas ARM based SoC fixes for v3.12
* Remove unused #gpio-ranges-cells DT property
* Remove usage of deprecated #gpio-range-cells DT property
from GPIO R-Car
Property was deprecated in v3.11-rc2
* Correct ether pinctl naming for armadillo800eva board
Regression introduced in v3.10-rc5
* Add Micrel KSZ8041 PHY fixup to lager board
This resolves a problem that has been present since 3.11-rc2
* Update SDHI DT compatibility string to the <unit>-<soc> format
This makes compatibility strings consistent across all renesas
hardware which currently supports DT.
The bindings which are being updated where intorodiced on
a per-SoC basis starting in v3.8-rc7. They may have
been internally consistent when originally added.
* tag 'renesas-fixes4-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: Remove #gpio-ranges-cells DT property
gpio: rcar: Remove #gpio-range-cells DT property usage
ARM: shmobile: armadillo: fixup ether pinctrl naming
ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup
ARM: shmobile: update SDHI DT compatibility string to the <unit>-<soc> format
Signed-off-by: Olof Johansson <olof@lixom.net>
the current dts is lacking interrupt and dma prop for video input
processor of prima2 and atlas6, this patch fixes it.
Signed-off-by: Renwei Wu <Renwei.Wu@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
we lost an address range <0x56000000 0x56000000 0x1b00000> for peri-iobg
of prima2.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Makefile missed to include atlas6-evb.dtb for ARCH_ATLAS6.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
sirf uart and usp-based uart driver with full dma support has
hit 3.12, here we fix the fifosize, dma channels for some HW
prop.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Currently, development on arm64 is aided by a Foundation_v8 emulator
distributed by ARM [1]. To run their kernels, users will execute:
$ ./Foundation_v8 --image linux-system.axf --block-device raring-rootfs
To mount the raring-rootfs filesystem, the kernel parameter should
typically include:
root=/dev/vda
For this device to be present, the kernel must be compiled with
VIRTIO_{MMIO,BLK}. To make this work out-of-the-box, make it part of the
default configuration.
[1]: https://silver.arm.com/browse/FM00A
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Most readily available root filesystems are formatted as EXT4 these
days. For example, see the raring rootfs that the Debian folk is
preparing [1].
[1]: http://people.debian.org/~wookey/bootstrap/rootfs/
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
It turns out the kernel relies on barrier() to force a reload of the
percpu offset value. Since we can't easily modify the definition of
barrier() to include "tp" as an output register, we instead provide a
definition of __my_cpu_offset as extended assembly that includes a fake
stack read to hazard against barrier(), forcing gcc to know that it
must reread "tp" and recompute anything based on "tp" after a barrier.
This fixes observed hangs in the slub allocator when we are looping
on a percpu cmpxchg_double.
A similar fix for ARMv7 was made in June in change 509eb76ebf.
Cc: stable@vger.kernel.org
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Without that fix, at the end of the shutdown process, the board is
still powered (led glowing, fan running, ...).
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
NETGEAR ReadyNAS 102 Power button definition in .dts file flags
associated GPIO active low instead of active high. This results
in reversed events reported by input subsystem (0 returned when
the button is pressed, 1 when released). This patch makes
associated GPIO active high to recover correct behaviour.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
__initdata tag should be placed between the variable name and equal
sign for the variable to be placed in the intended .init.data section.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5934/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
In the flexcan_chip_start() function first the flexcan core is going through
the soft reset sequence, then the RX FIFO is enabled.
With the hardware is put into FIFO mode, message buffers 1...7 are reserved by
the FIFO engine. The remaining message buffers are in reset default values.
This patch removes the bogus initialization of the message buffers, as it
causes an imprecise external abort on imx6.
Cc: linux-stable <stable@vger.kernel.org>
Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Tested-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Git commit 616498813b "s390: system call path micro optimization"
introduced a regression in regard to system call restarting and inferior
function calls via the ptrace interface. The pointer to the system call
table needs to be loaded in sysc_sigpending if do_signal returns with
TIF_SYSCALl set after it restored a system call context.
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Currently copy_from_oldmem() is not able to copy to virtual memory.
When using kexec pre-allocated ELF header, copy_from_oldmem()
is used to copy the ELF notes information to vmalloc buffers.
So fix this and use the new function copy_from_realmem() that allows
copying also to vmalloc memory.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
To detect a line mode console we need a message event type
for the receive mask and a command event type for the send mask.
Checking for a MSG event in the sclp send mask was wrong and
might result in line mode consoles not being detected.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
"execute relative long" may have all sorts of side effects dependend on
the instructions it executes.
Therefore prohibit setting a kprobe on exrl just like we do for the
regular execute instruction.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
In case of error, the function tty3270_alloc_screen() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
TCP packets hitting the SYN proxy through the SYNPROXY target are not
validated by TCP conntrack. When th->doff is below 5, an underflow happens
when calculating the options length, causing skb_header_pointer() to
return NULL and triggering the BUG_ON().
Handle this case gracefully by checking for NULL instead of using BUG_ON().
Reported-by: Martin Topholm <mph@one.com>
Tested-by: Martin Topholm <mph@one.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acer Aspire 3830TG seems requiring GPIO bit 0 as the primary mute
control. When a machine is booted after Windows 8, the GPIO pin is
turned off and it results in the silent output.
This patch adds the manual fixup of GPIO bit 0 for this model.
Reported-by: Christopher <DIDI2002@web.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Add 0x54584e03 ID for TI TLV320AIC27 AC'97 codec according to datasheet:
http://www.ti.com/lit/ds/slas253a/slas253a.pdf
The weird thing is that the chip is physically marked 320AD91.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Nothing too exciting here, all driver specific except for the fix from
Liam for DPCM systems which have both front and back end DAIs which is
not yet used by anything in mainline.
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Merge tag 'asoc-v3.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.12
Nothing too exciting here, all driver specific except for the fix from
Liam for DPCM systems which have both front and back end DAIs which is
not yet used by anything in mainline.
The patch fixes the following compiler warning:
CC arch/avr32/kernel/process.o
arch/avr32/kernel/process.c: In function 'copy_thread':
arch/avr32/kernel/process.c:292: warning: assignment makes integer \
from pointer without a cast
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Since commit 01426478df
(avr32: Use generic idle loop) the kernel throws the
following warning on avr32:
WARNING: at 900322e4 [verbose debug info unavailable]
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc2 #117
task: 901c3ecc ti: 901c0000 task.ti: 901c0000
PC is at cpu_idle_poll_ctrl+0x1c/0x38
LR is at comparator_mode+0x3e/0x40
pc : [<900322e4>] lr : [<90014882>] Not tainted
sp : 901c1f74 r12: 00000000 r11: 901c74a0
r10: 901d2510 r9 : 00000001 r8 : 901db4de
r7 : 901c74a0 r6 : 00000001 r5 : 00410020 r4 : 901db574
r3 : 00410024 r2 : 90206fe0 r1 : 00000000 r0 : 007f0000
Flags: qvnzc
Mode bits: hjmde....G
CPU Mode: Supervisor
Call trace:
[<90039ede>] clockevents_set_mode+0x16/0x2e
[<90039f00>] clockevents_shutdown+0xa/0x1e
[<9003a078>] clockevents_exchange_device+0x58/0x70
[<9003a78c>] tick_check_new_device+0x38/0x54
[<9003a1a2>] clockevents_register_device+0x32/0x90
[<900035c4>] time_init+0xa8/0x108
[<90000520>] start_kernel+0x128/0x23c
When the 'avr32_comparator' clockevent device is registered,
the clockevent core sets the mode of that clockevent device
to CLOCK_EVT_MODE_SHUTDOWN. Due to this, the 'comparator_mode'
function calls the 'cpu_idle_poll_ctrl' to disables idle poll.
This results in the aforementioned warning because the polling
is not enabled yet.
Change the code to only disable idle poll if it is enabled by
the same function to avoid the warning.
Cc: stable@vger.kernel.org
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Use kbuild to add asm-generic headers that do nothing, also remove the arch
specific wrapper headers.
This only affects headers that do nothing but include the generic
equivalent. It does not touch any header that does a little more.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Superblock lock was replaced with (un)lock_super() removal, but left
uninitialized for Seventh Edition UNIX filesystem in the following commit (3.7):
c07cb01 sysv: drop lock/unlock super
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
