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Dmitry Torokhov [Mon, 16 Feb 2015 00:07:18 +0000 (16:07 -0800)]
Merge branch 'bfin_rotary' into next
Merge bfin_rotary driver changes from Sonic Zhang.
Dmitry Torokhov [Fri, 6 Feb 2015 06:50:16 +0000 (22:50 -0800)]
Input: bfin_rotary - introduce open and close methods
Introduce open and close methods for the input device to postpone enabling
the device until it is needed.
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Sonic Zhang [Fri, 6 Feb 2015 05:42:42 +0000 (21:42 -0800)]
Input: bfin_rotary - convert to use managed resources
Use of managed resources simplifies error handling.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Sonic Zhang [Fri, 6 Feb 2015 05:32:59 +0000 (21:32 -0800)]
Input: bfin_rotary - use generic IO functions
Instead of using arch-specific accessors remap rotary register physical
address into kernel space in probe and use standard readw and writew to
access rotary MMRs.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Sonic Zhang [Fri, 6 Feb 2015 05:23:10 +0000 (21:23 -0800)]
Input: bfin_rotary - move pin lists into into platform data
Newer Blackfin boards use pinctrl API to manage pins and the legacy
peripherial lists are not useful on them. Let's move pin lists into
platform data so older boards can still use them and newer boards can use
the modern API.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Sonic Zhang [Wed, 4 Feb 2015 01:12:17 +0000 (17:12 -0800)]
Input: bfin_rotary - move platform header to linux/platform_data
The platform data definition of the rotary driver should be generic for all
architectures.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Fri, 6 Feb 2015 06:05:51 +0000 (22:05 -0800)]
Input: bfin_rotary - mark suspend and resume code as __maybe_unused
Instead of using #ifdef to guard potentially unused suspend and resume code
let's mark them as __maybe_unused so they still get discarded if they are
not used but we do not get warning. This allows for better compile coverage.
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Wed, 11 Feb 2015 01:47:04 +0000 (17:47 -0800)]
Input: bfin_rotary - fix potential oops in interrupt handler
The interrupt handler in the driver tries to fetch driver data from
platform device, unfortunately it is only set up after interrupt handler
is registered. Since interrupt handler does not really need to access
the platform device itself let's change it to get the driver data
instance instead.
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pali Rohár [Sun, 15 Feb 2015 23:58:08 +0000 (15:58 -0800)]
Input: ALPS - move v7 packet info to Documentation and v6 packet info
This patch move all packet info from driver source code to documentation
and adds info about v6 packet format (from driver source code).
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Sun, 15 Feb 2015 23:55:16 +0000 (15:55 -0800)]
Input: ALPS - fix confusing comment in protocol data
The comment about suspicions entry 0x20, 0x02, 0x0e has over time drifted
away and it become hard to figure out what it meant. Let's move it back so
it is clear.
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pali Rohár [Wed, 14 Jan 2015 21:18:30 +0000 (13:18 -0800)]
Input: ALPS - do not mix trackstick and external PS/2 mouse data
Previously dev2 device was used for both external PS/2 mouse and internal
trackstick device (if available). This change introduces dev3 device which
is used for external PS/2 mouse data and dev2 is now used only for
trackstick.
In case that trackstick is not present dev2 is not created, so userspace
does not see non existent device in system.
Because laptops with ALPS devices often do not use i8042 active
multiplexing all data (from touchpad, trackstick and external PS/2 mouse)
come to one port. So it is not possible to know if external PS/2 mouse is
connected or not. In most cases external PS/2 mouse is not connected so
driver will create dev3 input device after first bare PS/2 packet will be
received. So there will not be "ghost" input device.
This change also helps in identifying possible problems in future if driver
decides to report 6-bytes trackstick packets as 3-bytes bare PS/2 (data
will be reported to dev3 instead dev2).
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Wed, 14 Jan 2015 04:46:09 +0000 (20:46 -0800)]
Input: ALPS - fix trackstick detection on some Dell Latitudes
On some Dell Latitudes we fail to identify presence of trackstick unless we
reset the device. The issue is quite benign as we do perform reset in
alps_init(), so the trackstick ends up working, but mouse name reported to
userspace is not accurate.
In order to fix the issue while avoiding the additional lengthy reset we
move the resrt to alps_detect() and keep the discovered state to be used
later in alps_init().
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Mon, 12 Jan 2015 08:30:32 +0000 (00:30 -0800)]
Input: ALPS - consolidate setting protocol parameters
Move setting of all protocol properties into alps_set_protocol (former
alps_set_defaults) instead of having it split between several functions.
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Wed, 14 Jan 2015 05:08:00 +0000 (21:08 -0800)]
Input: ALPS - split protocol data from model info
In preparation of reworking the way we set protocol parameters let's
split certain protocol items from alps_model_info into a separate
structure.
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Wed, 14 Jan 2015 18:39:52 +0000 (10:39 -0800)]
Input: ALPS - make Rushmore a separate protocol
Even though Rushmore is very close to V3 protocol it is sufficiently
different to warrant it's own protocol name.
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Wed, 14 Jan 2015 04:53:22 +0000 (20:53 -0800)]
Input: ALPS - renumber protocol numbers
In order to accommodate new protocol number for Rushmore touchpads
let's shift protocol numbers by 8 bits (i.e. 1 -> 0x100) - this way
we keep protocol version reported in input device id the same as it
was, but add some holes in numbering.
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Markus Elfring [Wed, 11 Feb 2015 18:10:21 +0000 (10:10 -0800)]
Input: adi - remove an unnecessary check
The input_free_device() function tests whether its argument is NULL and
then returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dan Carpenter [Wed, 11 Feb 2015 17:34:03 +0000 (09:34 -0800)]
Input: pxa27x_keypad - remove an unneeded NULL check
Static checkers complain about this NULL check because we dereference it
without checking a couple lines later. This function is only called
when "keypad->pdata" is non-NULL so we can just delete the NULL test.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[Dmitry: remove the variable altogether given that it is used just once and
dereference directly.]
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Bastien Nocera [Tue, 10 Feb 2015 23:42:21 +0000 (15:42 -0800)]
Input: soc_button_array - use "Windows" key for "Home"
KEY_HOME is the key to go back to the beginning of the line, not the key to
get into an overview mode, as Windows does. GNOME can already make use of
the Windows key on multiple form factors, and other desktop environments
can use it depending on the form factor.
Using "Windows" as the emitted key also means that the keycode sent out
matches the symbol on the key itself.
So switch KEY_HOME to KEY_LEFTMETA ("Windows" key).
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linus Torvalds [Mon, 9 Feb 2015 02:54:22 +0000 (18:54 -0800)]
Linux 3.19
Linus Torvalds [Mon, 9 Feb 2015 02:45:16 +0000 (18:45 -0800)]
Merge tag 'nios2-fixes-v3.19-final' of git://git.rocketboards.org/linux-socfpga-next
Pull nios2 fix from Ley Foon Tan:
"This fixes incorrect behavior of some user programs"
* tag 'nios2-fixes-v3.19-final' of git://git.rocketboards.org/linux-socfpga-next:
nios2: fix unhandled signals
Linus Torvalds [Mon, 9 Feb 2015 02:27:58 +0000 (18:27 -0800)]
Merge git://git.kvack.org/~bcrl/aio-fixes
Pull aio nested sleep annotation from Ben LaHaise,
* git://git.kvack.org/~bcrl/aio-fixes:
aio: annotate aio_read_event_ring for sleep patterns
Linus Torvalds [Mon, 9 Feb 2015 02:08:14 +0000 (18:08 -0800)]
Merge tag 'trace-fixes-v3.19-rc7' of git://git./linux/kernel/git/rostedt/linux-trace
Pull ftrace fixes from Steven Rostedt:
"During testing Sedat Dilek hit a "suspicious RCU usage" splat that
pointed out a real bug. During suspend and resume the tlb_flush
tracepoint is called when the CPU is going offline. As the CPU has
been noted as offline, RCU is ignoring that CPU, which means that it
can not use RCU protected locks. When tracepoints are activated, they
require RCU locking, and if RCU is ignoring a CPU that runs a
tracepoint, there is a chance that the tracepoint could cause
corruption.
The solution was to change the tracepoint into a
TRACE_EVENT_CONDITION() which allows us to check a condition to
determine if the tracepoint should be called or not. If the condition
is not met, the rcu protected code will not be executed. By adding
the condition "cpu_online(smp_processor_id())", this will prevent the
RCU protected code from being executed if the CPU is marked offline.
After adding this, another bug was discovered. As RCU checks rcu
callers, if a rcu call is not done, there is no check (obviously). We
found that tracepoints could be added in RCU ignored locations and not
have lockdep complain until the tracepoint is activated. This missed
places where tracepoints were added in places they should not have
been. To fix this, code was added in 3.18 that if lockdep is enabled,
any tracepoint will still call the rcu checks even if the tracepoint
is not enabled. The bug here, is that the check does not take the
CONDITION into account. As the condition may prevent tracepoints from
being activated in RCU ignored areas (as the one patch does), we get
false positives when we enable lockdep and hit a tracepoint that the
condition prevents it from being called in a RCU ignored location.
The fix for this is to add the CONDITION to the rcu checks, even if
the tracepoint is not enabled"
* tag 'trace-fixes-v3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
x86/tlb/trace: Do not trace on CPU that is offline
tracing: Add condition check to RCU lockdep checks
Chung-Ling Tang [Mon, 9 Feb 2015 01:40:50 +0000 (09:40 +0800)]
nios2: fix unhandled signals
Follow other architectures for user fault handling.
Signed-off-by: Chung-Ling Tang <cltang@codesourcery.com>
Acked-by: Ley Foon Tan <lftan@altera.com>
Steven Rostedt (Red Hat) [Fri, 6 Feb 2015 19:18:19 +0000 (14:18 -0500)]
x86/tlb/trace: Do not trace on CPU that is offline
When taking a CPU down for suspend and resume, a tracepoint may be called
when the CPU has been designated offline. As tracepoints require RCU for
protection, they must not be called if the current CPU is offline.
Unfortunately, trace_tlb_flush() is called in this scenario as was noted
by LOCKDEP:
...
Disabling non-boot CPUs ...
intel_pstate CPU 1 exiting
===============================
smpboot: CPU 1 didn't die...
[ INFO: suspicious RCU usage. ]
3.19.0-rc7-next-
20150204.1-iniza-small #1 Not tainted
-------------------------------
include/trace/events/tlb.h:35 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
RCU used illegally from offline CPU!
rcu_scheduler_active = 1, debug_locks = 0
no locks held by swapper/1/0.
stack backtrace:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.19.0-rc7-next-
20150204.1-iniza-small #1
Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013
0000000000000001 ffff88011a44fe18 ffffffff817e370d 0000000000000011
ffff88011a448290 ffff88011a44fe48 ffffffff810d6847 ffff8800c66b9600
0000000000000001 ffff88011a44c000 ffffffff81cb3900 ffff88011a44fe78
Call Trace:
[<
ffffffff817e370d>] dump_stack+0x4c/0x65
[<
ffffffff810d6847>] lockdep_rcu_suspicious+0xe7/0x120
[<
ffffffff810b71a5>] idle_task_exit+0x205/0x2c0
[<
ffffffff81054c4e>] play_dead_common+0xe/0x50
[<
ffffffff81054ca5>] native_play_dead+0x15/0x140
[<
ffffffff8102963f>] arch_cpu_idle_dead+0xf/0x20
[<
ffffffff810cd89e>] cpu_startup_entry+0x37e/0x580
[<
ffffffff81053e20>] start_secondary+0x140/0x150
intel_pstate CPU 2 exiting
...
By converting the tlb_flush tracepoint to a TRACE_EVENT_CONDITION where the
condition is cpu_online(smp_processor_id()), we can avoid calling RCU protected
code when the CPU is offline.
Link: http://lkml.kernel.org/r/CA+icZUUGiGDoL5NU8RuxKzFjoLjEKRtUWx=JB8B9a0EQv-eGzQ@mail.gmail.com
Cc: stable@vger.kernel.org # 3.17+
Fixes:
d17d8f9dedb9 "x86/mm: Add tracepoints for TLB flushes"
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Suggested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Hansen <dave@sr71.net>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Steven Rostedt (Red Hat) [Fri, 6 Feb 2015 19:30:50 +0000 (14:30 -0500)]
tracing: Add condition check to RCU lockdep checks
The trace_tlb_flush() tracepoint can be called when a CPU is going offline.
When a CPU is offline, RCU is no longer watching that CPU and since the
tracepoint is protected by RCU, it must not be called. To prevent the
tlb_flush tracepoint from being called when the CPU is offline, it was
converted to a TRACE_EVENT_CONDITION where the condition checks if the
CPU is online before calling the tracepoint.
Unfortunately, this was not enough to stop lockdep from complaining about
it. Even though the RCU protected code of the tracepoint will never be
called, the condition is hidden within the tracepoint, and even though the
condition prevents RCU code from being called, the lockdep checks are
outside the tracepoint (this is to test tracepoints even when they are not
enabled).
Even though tracepoints should be checked to be RCU safe when they are not
enabled, the condition should still be considered when checking RCU.
Link: http://lkml.kernel.org/r/CA+icZUUGiGDoL5NU8RuxKzFjoLjEKRtUWx=JB8B9a0EQv-eGzQ@mail.gmail.com
Fixes:
3a630178fd5f "tracing: generate RCU warnings even when tracepoints are disabled"
Cc: stable@vger.kernel.org # 3.18+
Acked-by: Dave Hansen <dave@sr71.net>
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Linus Torvalds [Sat, 7 Feb 2015 19:10:40 +0000 (11:10 -0800)]
Merge tag 'rdma-for-linus' of git://git./linux/kernel/git/roland/infiniband
Pull one more infiniband revert from Roland Dreier:
"One more last-second RDMA change for 3.19: Yann realized that the
previous revert of new userspace ABI did not go far enough, and we're
still exposing a change that we don't want. Revert even closer to
3.18 interface to make sure we get things right in the long run"
Yann Droneaud pipes up:
"I hope this could go in v3.19 as, at this stage, we don't want to
expose any bits of this ABI in a released kernel"
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
Revert "IB/core: Add support for extended query device caps"
Linus Torvalds [Sat, 7 Feb 2015 19:04:48 +0000 (11:04 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fix from Chris Mason:
"Forrest Liu tracked down a missing blk_finish_plug in the btrfs
logging code. This isn't a new bug, and it's hard to hit. But, it's
safe enough for inclusion now, and in my for-linus branch"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: add missing blk_finish_plug in btrfs_sync_log()
Rasmus Villemoes [Fri, 6 Feb 2015 16:39:20 +0000 (08:39 -0800)]
Input: elan_i2c - fix wrong %p extension
There's no %px extension. From the context I think the intention was to
dump the five bytes which were not as expected, and for that one should use
%ph.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linus Torvalds [Fri, 6 Feb 2015 21:56:02 +0000 (13:56 -0800)]
Merge branches 'timers-urgent-for-linus' and 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull timer and x86 fix from Ingo Molnar:
"A CLOCK_TAI early expiry fix and an x86 microcode driver oops fix"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hrtimer: Fix incorrect tai offset calculation for non high-res timer systems
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, microcode: Return error from driver init code when loader is disabled
Linus Torvalds [Fri, 6 Feb 2015 21:34:26 +0000 (13:34 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Misc fixes"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Fix deadline parameter modification handling
sched/wait: Remove might_sleep() from wait_event_cmd()
sched: Fix crash if cpuset_cpumask_can_shrink() is passed an empty cpumask
sched/fair: Avoid using uninitialized variable in preferred_group_nid()
Linus Torvalds [Fri, 6 Feb 2015 21:06:10 +0000 (13:06 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull core kernel fixes from Ingo Molnar:
"Two liblockdep fixes and a CPU hotplug race fix"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/liblockdep: don't include host headers
tools/liblockdep: ignore generated .so file
smpboot: Add missing get_online_cpus() in smpboot_register_percpu_thread()
Linus Torvalds [Fri, 6 Feb 2015 20:50:37 +0000 (12:50 -0800)]
Merge tag 'sound-3.19' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Hopefully the final pull request for 3.19: this ended up with a
slightly higher volume than wished, but I put them all as they are
either stable or 3.19 regression fixes.
Most of commits are from ASoC, and have been stewed for a while in
linux-next. The only change in the common code is the regression
fixes for ASoC AC97 stuff wrt device registrations. The rest are
device-specific, mostly small fixes in various ASoC drivers and ak411x
on ice1724 boards"
* tag 'sound-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: Intel: fix sst firmware path for cht-bsw-rt5672
ARM: dts: Fix I2S1, I2S2 compatible for exynos4 SoCs
ASoC: sgtl5000: add delay before first I2C access
MAINTAINERS: ASoC: add maintainer for Intel BDW/HSW ASoC driver
ASoC: atmel_ssc_dai: fix the setting for DSP mode
ASoC: sgtl5000: Use shift mask when setting codec mode
ASoC: tlv320aic3x: Fix data delay configuration
ALSA: ak411x: Fix stall in work callback
ASoC: Intel: Used lock version to update shim registers
ASoC: wm8731: init mutex in i2c init path
ASoC: atmel_ssc_dai: fix start event for I2S mode
ASoC: rt5640: Add RT5642 ACPI ID for Intel Baytrail
ASoC: wm97xx: Reset AC'97 device before registering it
ASoC: Add support for allocating AC'97 device before registering it
Linus Torvalds [Fri, 6 Feb 2015 16:52:53 +0000 (08:52 -0800)]
Merge branch 'akpm' (patches from Andrew Morton)
Merge misc fixes from Andrew Morton:
"7 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm/debug_pagealloc: fix build failure on ppc and some other archs
nilfs2: fix deadlock of segment constructor over I_SYNC flag
MAINTAINERS: remove SUPERH website
memcg, shmem: fix shmem migration to use lrucare
mm: export "high_memory" symbol on !MMU
.mailmap: update Konstantin Khlebnikov's email address
mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range
Linus Torvalds [Fri, 6 Feb 2015 16:28:54 +0000 (08:28 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"The pending MIPS fixes for 3.19. All across the field and nothing
particularly severe or dramatic"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (23 commits)
IRQCHIP: mips-gic: Avoid rerouting timer IRQs for smp-cmp
MIPS: Fix syscall_get_nr for the syscall exit tracing.
MIPS: elf2ecoff: Ignore PT_MIPS_ABIFLAGS program headers.
MIPS: elf2ecoff: Rewrite main processing loop to switch.
MIPS: fork: Fix MSA/FPU/DSP context duplication race
MIPS: Fix C0_Pagegrain[IEC] support.
MIPS: traps: Fix inline asm ctc1 missing .set hardfloat
MIPS: mipsregs.h: Add write_32bit_cp1_register()
MIPS: Fix kernel lockup or crash after CPU offline/online
MIPS: OCTEON: fix kernel crash when offlining a CPU
MIPS: ARC: Fix build error.
MIPS: IRQ: Fix disable_irq on CPU IRQs
MIPS: smp-mt,smp-cmp: Enable all HW IRQs on secondary CPUs
MIPS: Fix restart of indirect syscalls
MIPS: ELF: fix loading o32 binaries on 64-bit kernels
MIPS: mips-cm: Fix sparse warnings
MIPS: Kconfig: Fix recursive dependency.
MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.
MIPS: JZ4740: Fixup #include's (sparse)
MIPS: Wire up execveat(2).
...
Yann Droneaud [Thu, 5 Feb 2015 21:10:18 +0000 (22:10 +0100)]
Revert "IB/core: Add support for extended query device caps"
While commit
7e36ef8205ff ("IB/core: Temporarily disable
ex_query_device uverb") is correct as it makes the extended
QUERY_DEVICE uverb (which came as part of commit
5a77abf9a97a
("IB/core: Add support for extended query device caps") and commit
860f10a799c8 ("IB/core: Add flags for on demand paging support")) not
available to userspace, it doesn't address the initial issue regarding
ib_copy_to_udata() [1][2].
Additionally, further discussions around this new uverb seems to
conclude it would require a different data structure than the one
currently described in <rdma/ib_user_verbs.h> [3].
Both of these issues require a revert of the changes, so this patch
partially reverts commit
8cdd312cfed7 ("IB/mlx5: Implement the ODP
capability query verb") and commit
860f10a799c8 ("IB/core: Add flags
for on demand paging support") and fully reverts commit
5a77abf9a97a
("IB/core: Add support for extended query device caps").
[1] "Re: [PATCH v3 06/17] IB/core: Add support for extended query device caps"
http://mid.gmane.org/
1418733236.2779.26.camel@opteya.com
[2] "Re: [PATCH] IB/core: Temporarily disable ex_query_device uverb"
http://mid.gmane.org/
1423067503.3030.83.camel@opteya.com
[3] "RE: [PATCH v1 1/5] IB/uverbs: ex_query_device: answer must not depend on request's comp_mask"
http://mid.gmane.org/
2807E5FD2F6FDA4886F6618EAC48510E0CC12C30@CRSMSX101.amr.corp.intel.com
Cc: Eli Cohen <eli@mellanox.com>
Cc: Haggai Eran <haggaie@mellanox.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Shachar Raindel <raindel@mellanox.com>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Dmitry Torokhov [Thu, 5 Feb 2015 23:56:28 +0000 (15:56 -0800)]
Input: evdev - do not queue SYN_DROPPED if queue is empty
There is no point in queueing EV_SYN/SYN_DROPPED on clock type change when
there are no events in the client's queue and doing so confuses tests in
libinput package, so let's not do that.
Reported-and-tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Joonsoo Kim [Thu, 5 Feb 2015 20:25:23 +0000 (12:25 -0800)]
mm/debug_pagealloc: fix build failure on ppc and some other archs
Kim Phillips reported following build failure.
LD init/built-in.o
mm/built-in.o: In function `free_pages_prepare':
mm/page_alloc.c:770: undefined reference to `.kernel_map_pages'
mm/built-in.o: In function `prep_new_page':
mm/page_alloc.c:933: undefined reference to `.kernel_map_pages'
mm/built-in.o: In function `map_pages':
mm/compaction.c:61: undefined reference to `.kernel_map_pages'
make: *** [vmlinux] Error 1
Reason for this problem is that commit
031bc5743f15
("mm/debug-pagealloc: make debug-pagealloc boottime configurable")
forgot to remove the old declaration of kernel_map_pages() for some
architectures. This patch removes them to fix build failure.
Reported-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: David Miller <davem@davemloft.net>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ryusuke Konishi [Thu, 5 Feb 2015 20:25:20 +0000 (12:25 -0800)]
nilfs2: fix deadlock of segment constructor over I_SYNC flag
Nilfs2 eventually hangs in a stress test with fsstress program. This
issue was caused by the following deadlock over I_SYNC flag between
nilfs_segctor_thread() and writeback_sb_inodes():
nilfs_segctor_thread()
nilfs_segctor_thread_construct()
nilfs_segctor_unlock()
nilfs_dispose_list()
iput()
iput_final()
evict()
inode_wait_for_writeback() * wait for I_SYNC flag
writeback_sb_inodes()
* set I_SYNC flag on inode->i_state
__writeback_single_inode()
do_writepages()
nilfs_writepages()
nilfs_construct_dsync_segment()
nilfs_segctor_sync()
* wait for completion of segment constructor
inode_sync_complete()
* clear I_SYNC flag after __writeback_single_inode() completed
writeback_sb_inodes() calls do_writepages() for dirty inodes after
setting I_SYNC flag on inode->i_state. do_writepages() in turn calls
nilfs_writepages(), which can run segment constructor and wait for its
completion. On the other hand, segment constructor calls iput(), which
can call evict() and wait for the I_SYNC flag on
inode_wait_for_writeback().
Since segment constructor doesn't know when I_SYNC will be set, it
cannot know whether iput() will block or not unless inode->i_nlink has a
non-zero count. We can prevent evict() from being called in iput() by
implementing sop->drop_inode(), but it's not preferable to leave inodes
with i_nlink == 0 for long periods because it even defers file
truncation and inode deallocation. So, this instead resolves the
deadlock by calling iput() asynchronously with a workqueue for inodes
with i_nlink == 0.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sudip Mukherjee [Thu, 5 Feb 2015 20:25:17 +0000 (12:25 -0800)]
MAINTAINERS: remove SUPERH website
The mentioned website only displays information about buying and selling
domains.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Thu, 5 Feb 2015 20:25:14 +0000 (12:25 -0800)]
memcg, shmem: fix shmem migration to use lrucare
It has been reported that 965GM might trigger
VM_BUG_ON_PAGE(!lrucare && PageLRU(oldpage), oldpage)
in mem_cgroup_migrate when shmem wants to replace a swap cache page
because of shmem_should_replace_page (the page is allocated from an
inappropriate zone). shmem_replace_page expects that the oldpage is not
on LRU list and calls mem_cgroup_migrate without lrucare. This is
obviously incorrect because swapcache pages might be on the LRU list
(e.g. swapin readahead page).
Fix this by enabling lrucare for the migration in shmem_replace_page.
Also clarify that lrucare should be used even if one of the pages might
be on LRU list.
The BUG_ON will trigger only when CONFIG_DEBUG_VM is enabled but even
without that the migration code might leave the old page on an
inappropriate memcg' LRU which is not that critical because the page
would get removed with its last reference but it is still confusing.
Fixes:
0a31bc97c80c ("mm: memcontrol: rewrite uncharge API")
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Dave Airlie <airlied@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org> [3.17+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Thu, 5 Feb 2015 20:25:12 +0000 (12:25 -0800)]
mm: export "high_memory" symbol on !MMU
The symbol 'high_memory' is provided on both MMU- and NOMMU-kernels, but
only one of them is exported, which leads to module build errors in
drivers that work fine built-in:
ERROR: "high_memory" [drivers/net/virtio_net.ko] undefined!
ERROR: "high_memory" [drivers/net/ppp/ppp_mppe.ko] undefined!
ERROR: "high_memory" [drivers/mtd/nand/nand.ko] undefined!
ERROR: "high_memory" [crypto/tcrypt.ko] undefined!
ERROR: "high_memory" [crypto/cts.ko] undefined!
This exports the symbol to get these to work on NOMMU as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kim Phillips [Thu, 5 Feb 2015 20:25:09 +0000 (12:25 -0800)]
.mailmap: update Konstantin Khlebnikov's email address
get_maintainer.pl returns k.khlebnikov@samsung.com via git history, for
which emails get rejected:
RCPT TO:<k.khlebnikov@samsung.com>
550 5.1.1 Recipient address rejected: User unknown
Use his other address that passes vger's mxverify:
RCPT TO:<koct9i@gmail.com>
250 2.1.5 OK ir10si13843754pbc.62 - gsmtp
and add his old email address in the wrong email address field.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Acked-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Shiraz Hashim [Thu, 5 Feb 2015 20:25:06 +0000 (12:25 -0800)]
mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range
walk_page_range() silently skips vma having VM_PFNMAP set, which leads
to undesirable behaviour at client end (who called walk_page_range).
Userspace applications get the wrong data, so the effect is like just
confusing users (if the applications just display the data) or sometimes
killing the processes (if the applications do something with
misunderstanding virtual addresses due to the wrong data.)
For example for pagemap_read, when no callbacks are called against
VM_PFNMAP vma, pagemap_read may prepare pagemap data for next virtual
address range at wrong index.
Eventually userspace may get wrong pagemap data for a task.
Corresponding to a VM_PFNMAP marked vma region, kernel may report
mappings from subsequent vma regions. User space in turn may account
more pages (than really are) to the task.
In my case I was using procmem, procrack (Android utility) which uses
pagemap interface to account RSS pages of a task. Due to this bug it
was giving a wrong picture for vmas (with VM_PFNMAP set).
Fixes:
a9ff785e4437 ("mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas")
Signed-off-by: Shiraz Hashim <shashim@codeaurora.org>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org> [3.10+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Takashi Iwai [Thu, 5 Feb 2015 20:31:19 +0000 (21:31 +0100)]
Merge tag 'asoc-fix-ac97-v3.19-rc7' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: AC'97 fixes
These are rather too large for this late in the release cycle but
they're clear, well understood and have been tested to fix a regression
which was introduced for v3.19. The details are all in Lars' changelog
and they've been cooking in -next for a while, to a large extent out
of conservatism about the size.
Takashi Iwai [Thu, 5 Feb 2015 20:30:43 +0000 (21:30 +0100)]
Merge tag 'asoc-fix-intel-v3.19-rc7' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: Fix for Intel firmware name
Another one liner that arrived after the earlier pull request. There's
a trivial conflict with my -next branch, I'll send a pull request with
that resolution and some other new stuff before Monday.
Takashi Iwai [Thu, 5 Feb 2015 20:29:33 +0000 (21:29 +0100)]
Merge tag 'asoc-fix-v3.19-rc7' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.19
A few last minute fixes for v3.19, all driver specific. None of them
stand out particularly - it's all the standard people who are affected
will care stuff.
The Samsung fix is a DT only fix for the audio controller, it's being
merged via the ASoC tree due to process messups (the submitter sent it
at the end of a tangentally related series rather than separately to the
ARM folks) in order to make sure that it gets to people sooner.
Kevin Strasser [Thu, 5 Feb 2015 20:12:07 +0000 (12:12 -0800)]
ASoC: Intel: fix sst firmware path for cht-bsw-rt5672
All sst firmware is provided under the intel directory of the linux-firmware
tree. By default this directory structure is kept when installing on a target
system. Change the path to expect a default linux-firmware installation.
Signed-off-by: Kevin Strasser <kevin.strasser@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Mark Brown [Thu, 5 Feb 2015 19:36:29 +0000 (19:36 +0000)]
Merge remote-tracking branch 'asoc/fix/samsung' into asoc-linus
Sylwester Nawrocki [Tue, 3 Feb 2015 14:06:22 +0000 (15:06 +0100)]
ARM: dts: Fix I2S1, I2S2 compatible for exynos4 SoCs
I2S1, I2S2 on Exynos4 SoC series have limited functionality compared
to I2S0, "samsung,s3c6410-i2s" compatible should be used for them.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Mark Brown [Thu, 5 Feb 2015 19:34:53 +0000 (19:34 +0000)]
Merge remote-tracking branch 'asoc/fix/wm8731' into asoc-linus
Mark Brown [Thu, 5 Feb 2015 19:34:46 +0000 (19:34 +0000)]
Merge remote-tracking branch 'asoc/fix/tlv320aic3x' into asoc-linus
Mark Brown [Thu, 5 Feb 2015 19:34:40 +0000 (19:34 +0000)]
Merge remote-tracking branch 'asoc/fix/sgtl5000' into asoc-linus
Mark Brown [Thu, 5 Feb 2015 19:34:34 +0000 (19:34 +0000)]
Merge remote-tracking branch 'asoc/fix/rt5640' into asoc-linus
Mark Brown [Thu, 5 Feb 2015 19:34:10 +0000 (19:34 +0000)]
Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus
Mark Brown [Thu, 5 Feb 2015 19:33:44 +0000 (19:33 +0000)]
Merge remote-tracking branch 'asoc/fix/atmel' into asoc-linus
Linus Torvalds [Thu, 5 Feb 2015 19:23:45 +0000 (11:23 -0800)]
MMerge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Stretch ACKs can kill performance with Reno and CUBIC congestion
control, largely due to LRO and GRO. Fix from Neal Cardwell.
2) Fix userland breakage because we accidently emit zero length netlink
messages from the bridging code. From Roopa Prabhu.
3) Carry handling in generic csum_tcpudp_nofold is broken, fix from
Karl Beldan.
4) Remove bogus dev_set_net() calls from CAIF driver, from Nicolas
Dichtel.
5) Make sure PPP deflation never returns a length greater then the
output buffer, otherwise we overflow and trigger skb_over_panic().
Fix from Florian Westphal.
6) COSA driver needs VIRT_TO_BUS Kconfig dependencies, from Arnd
Bergmann.
7) Don't increase route cached MTU on datagram too big ICMPs. From Li
Wei.
8) Fix error path leaks in nf_tables, from Pablo Neira Ayuso.
9) Fix bitmask handling regression in netlink that broke things like
acpi userland tools. From Pablo Neira Ayuso.
10) Wrong header pointer passed to param_type2af() in SCTP code, from
Saran Maruti Ramanara.
11) Stacked vlans not handled correctly by vlan_get_protocol(), from
Toshiaki Makita.
12) Add missing DMA memory barrier to xgene driver, from Iyappan
Subramanian.
13) Fix crash in rate estimators, from Eric Dumazet.
14) We've been adding various workarounds, one after another, for the
change which added the per-net tcp_sock. It was meant to reduce
socket contention but added lots of problems.
Reduce this instead to a proper per-cpu socket and that rids us of
all the daemons.
From Eric Dumazet.
15) Fix memory corruption and OOPS in mlx4 driver, from Jack
Morgenstein.
16) When we disabled UFO in the virtio_net device, it introduces some
serious performance regressions. The orignal problem was IPV6
fragment ID generation, so fix that properly instead. From Vlad
Yasevich.
17) sr9700 driver build breaks on xtensa because it defines macros with
the same name as those used by the arch code. Use more unique
names. From Chen Gang.
18) Fix endianness in new virio 1.0 mode of the vhost net driver, from
Michael S Tsirkin.
19) Several sysctls were setting the maxlen attribute incorrectly, from
Sasha Levin.
20) Don't accept an FQ scheduler quantum of zero, that leads to crashes.
From Kenneth Klette Jonassen.
21) Fix dumping of non-existing actions in the packet scheduler
classifier. From Ignacy Gawędzki.
22) Return the write work_done value when doing TX work in the qlcnic
driver.
23) ip6gre_err accesses the info field with the wrong endianness, from
Sabrina Dubroca.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (54 commits)
sit: fix some __be16/u16 mismatches
ipv6: fix sparse errors in ip6_make_flowlabel()
net: remove some sparse warnings
flow_keys: n_proto type should be __be16
ip6_gre: fix endianness errors in ip6gre_err
qlcnic: Fix NAPI poll routine for Tx completion
amd-xgbe: Set RSS enablement based on hardware features
amd-xgbe: Adjust for zero-based traffic class count
cls_api.c: Fix dumping of non-existing actions' stats.
pkt_sched: fq: avoid hang when quantum 0
net: rds: use correct size for max unacked packets and bytes
vhost/net: fix up num_buffers endian-ness
gianfar: correct the bad expression while writing bit-pattern
net: usb: sr9700: Use 'SR_' prefix for the common register macros
Revert "drivers/net: Disable UFO through virtio"
Revert "drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets"
ipv6: Select fragment id during UFO segmentation if not set.
xen-netback: stop the guest rx thread after a fatal error
net/mlx4_core: Fix kernel Oops (mem corruption) when working with more than 80 VFs
isdn: off by one in connect_res()
...
Linus Torvalds [Thu, 5 Feb 2015 19:17:15 +0000 (11:17 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This patch set is fixing two serious problems which have turned up
late in the release cycle.
The first fixes a problem with 4k sector disks where the transfer
length (amount of data sent to the disk) was getting increased every
time the disk was revalidated leading to potential for overflows.
The other is a regression oops fix for some of our last merge window
code"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
sd: Fix max transfer length for 4k disks
scsi: fix device handler detach oops
Linus Torvalds [Thu, 5 Feb 2015 19:11:44 +0000 (11:11 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Radeon and amdkfd fixes.
Radeon ones mostly for oops in some test/benchmark functions since
fencing changes, and one regression fix for old GPUs,
There is one cirrus regression fix, the 32bpp broke userspace, so this
hides it behind a module option for the few users who care.
I'm off for a few days, so this is probably the final pull I have, if
I see fixes from Intel I'll forward the pull as I should have email"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/cirrus: Limit modes depending on bpp option
drm/radeon: fix the crash in test functions
drm/radeon: fix the crash in benchmark functions
drm/radeon: properly set vm fragment size for TN/RL
drm/radeon: don't init gpuvm if accel is disabled (v3)
drm/radeon: fix PLLs on RS880 and older v2
drm/amdkfd: Don't create BUG due to incorrect user parameter
drm/amdkfd: max num of queues can't be 0
drm/amdkfd: Fix bug in accounting of queues
Linus Torvalds [Thu, 5 Feb 2015 19:07:25 +0000 (11:07 -0800)]
Merge tag 'spi-v3.19-rc7' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of driver specific fixes:
- Disable DMA mode for i.MX6DL chips due to a hardware bug.
- Don't use devm_kzalloc() outside of bind/unbind paths in the
fsl-dspi driver, fixing memory leaks"
* tag 'spi-v3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: imx: use pio mode for i.mx6dl
spi: spi-fsl-dspi: Remove usage of devm_kzalloc
Linus Torvalds [Thu, 5 Feb 2015 18:57:29 +0000 (10:57 -0800)]
Merge tag 'pm+acpi-3.19-fin' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI power management fix from Rafael Wysocki:
"This is a revert of an ACPI Low-power Subsystem (LPSS) driver change
that was supposed to improve power management of the LPSS DMA
controller, but introduced more serious problems.
Since fixing them turns out to be non-trivial, it is better to revert
the commit in question at this point and try to fix the original issue
differently in the next cycle"
* tag 'pm+acpi-3.19-fin' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPI / LPSS: introduce a 'proxy' device to power on LPSS for DMA"
Linus Torvalds [Thu, 5 Feb 2015 18:23:12 +0000 (10:23 -0800)]
Merge tag 'pci-v3.19-fixes-2' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Enumeration
- Scan all device numbers on NEC as well as Stratus (Charlotte Richardson)
Resource management
- Handle read-only BARs on AMD CS553x devices (Myron Stowe)
Synopsys DesignWare
- Reject MSI-X IRQs (Lucas Stach)"
* tag 'pci-v3.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Handle read-only BARs on AMD CS553x devices
PCI: Add NEC variants to Stratus ftServer PCIe DMI check
PCI: designware: Reject MSI-X IRQs
James Hogan [Mon, 19 Jan 2015 15:38:24 +0000 (15:38 +0000)]
IRQCHIP: mips-gic: Avoid rerouting timer IRQs for smp-cmp
Commit
e9de688dac65 ("irqchip: mips-gic: Support local interrupts")
changed the GIC irqchip driver so that all local interrupts were routed
to the same CPU pin used for external interrupts. Unfortunately this
causes a regression when smp-cmp is used. The CPUs are started by the
bootloader and put in a timer based waiting poll loop, but when their
timer interrupts are rerouted to a different IRQ pin which is not
unmasked they never wake up.
Since smp-cmp support is deprecated and everybody who was using it
should be switching to smp-cps which brings up the secondary CPUs
without bootloader assistance, I've gone for the simple fix which can be
easily removed once smp-cmp is removed, rather than a fully generic fix.
In __gic_init() the local GIC_VPE_TIMER_MAP register is read to find the
boot-time routing of the local timer interrupt, and a chained handler is
added to that CPU pin as well as the normal one.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Fixes:
e9de688dac65 ("irqchip: mips-gic: Support local interrupts")
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Patchwork: https://patchwork.linux-mips.org/patch/9081/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Eric Dumazet [Wed, 4 Feb 2015 23:12:04 +0000 (15:12 -0800)]
sit: fix some __be16/u16 mismatches
Fixes following sparse warnings :
net/ipv6/sit.c:1509:32: warning: incorrect type in assignment (different base types)
net/ipv6/sit.c:1509:32: expected restricted __be16 [usertype] sport
net/ipv6/sit.c:1509:32: got unsigned short
net/ipv6/sit.c:1514:32: warning: incorrect type in assignment (different base types)
net/ipv6/sit.c:1514:32: expected restricted __be16 [usertype] dport
net/ipv6/sit.c:1514:32: got unsigned short
net/ipv6/sit.c:1711:38: warning: incorrect type in argument 3 (different base types)
net/ipv6/sit.c:1711:38: expected unsigned short [unsigned] [usertype] value
net/ipv6/sit.c:1711:38: got restricted __be16 [usertype] sport
net/ipv6/sit.c:1713:38: warning: incorrect type in argument 3 (different base types)
net/ipv6/sit.c:1713:38: expected unsigned short [unsigned] [usertype] value
net/ipv6/sit.c:1713:38: got restricted __be16 [usertype] dport
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 4 Feb 2015 23:03:25 +0000 (15:03 -0800)]
ipv6: fix sparse errors in ip6_make_flowlabel()
include/net/ipv6.h:713:22: warning: incorrect type in assignment (different base types)
include/net/ipv6.h:713:22: expected restricted __be32 [usertype] hash
include/net/ipv6.h:713:22: got unsigned int
include/net/ipv6.h:719:25: warning: restricted __be32 degrades to integer
include/net/ipv6.h:719:22: warning: invalid assignment: ^=
include/net/ipv6.h:719:22: left side has type restricted __be32
include/net/ipv6.h:719:22: right side has type unsigned int
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 4 Feb 2015 21:37:44 +0000 (13:37 -0800)]
net: remove some sparse warnings
netdev_adjacent_add_links() and netdev_adjacent_del_links()
are static.
queue->qdisc has __rcu annotation, need to use RCU_INIT_POINTER()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 4 Feb 2015 21:31:54 +0000 (13:31 -0800)]
flow_keys: n_proto type should be __be16
(struct flow_keys)->n_proto is in network order, use
proper type for this.
Fixes following sparse errors :
net/core/flow_dissector.c:139:39: warning: incorrect type in assignment (different base types)
net/core/flow_dissector.c:139:39: expected unsigned short [unsigned] [usertype] n_proto
net/core/flow_dissector.c:139:39: got restricted __be16 [assigned] [usertype] proto
net/core/flow_dissector.c:237:23: warning: incorrect type in assignment (different base types)
net/core/flow_dissector.c:237:23: expected unsigned short [unsigned] [usertype] n_proto
net/core/flow_dissector.c:237:23: got restricted __be16 [assigned] [usertype] proto
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes:
e0f31d849867 ("flow_keys: Record IP layer protocol in skb_flow_dissect()")
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Wed, 4 Feb 2015 14:25:09 +0000 (15:25 +0100)]
ip6_gre: fix endianness errors in ip6gre_err
info is in network byte order, change it back to host byte order
before use. In particular, the current code sets the MTU of the tunnel
to a wrong (too big) value.
Fixes:
c12b395a4664 ("gre: Support GRE over IPv6")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shahed Shaikh [Wed, 4 Feb 2015 10:41:25 +0000 (05:41 -0500)]
qlcnic: Fix NAPI poll routine for Tx completion
After
d75b1ade567f ("net: less interrupt masking in NAPI")
driver's NAPI poll routine is expected to return
exact budget value if it wants to be re-called.
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Fixes:
d75b1ade567f ("net: less interrupt masking in NAPI")
Signed-off-by: David S. Miller <davem@davemloft.net>
John Stultz [Thu, 5 Feb 2015 00:45:26 +0000 (16:45 -0800)]
hrtimer: Fix incorrect tai offset calculation for non high-res timer systems
I noticed some CLOCK_TAI timer test failures on one of my
less-frequently used configurations. And after digging in I
found in
76f4108892d9 (Cleanup hrtimer accessors to the
timekepeing state), the hrtimer_get_softirq_time tai offset
calucation was incorrectly rewritten, as the tai offset we
return shold be from CLOCK_MONOTONIC, and not CLOCK_REALTIME.
This results in CLOCK_TAI timers expiring early on non-highres
capable machines.
This patch fixes the issue, calculating the tai time properly
from the monotonic base.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable <stable@vger.kernel.org> # 3.17+
Link: http://lkml.kernel.org/r/1423097126-10236-1-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Lendacky, Thomas [Tue, 3 Feb 2015 20:14:32 +0000 (14:14 -0600)]
amd-xgbe: Set RSS enablement based on hardware features
The RSS support requires enablement based on the features reported by
the hardware. The setting of this flag is missing. Add support to
set the RSS enablement flag based on the reported hardware features.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lendacky, Thomas [Tue, 3 Feb 2015 18:49:55 +0000 (12:49 -0600)]
amd-xgbe: Adjust for zero-based traffic class count
The number of traffic classes reported by the hardware is zero-based
so increment the value returned to get an actual count.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ignacy Gawędzki [Tue, 3 Feb 2015 18:05:18 +0000 (19:05 +0100)]
cls_api.c: Fix dumping of non-existing actions' stats.
In tcf_exts_dump_stats(), ensure that exts->actions is not empty before
accessing the first element of that list and calling tcf_action_copy_stats()
on it. This fixes some random segvs when adding filters of type "basic" with
no particular action.
This also fixes the dumping of those "no-action" filters, which more often
than not made calls to tcf_action_copy_stats() fail and consequently netlink
attributes added by the caller to be removed by a call to nla_nest_cancel().
Fixes:
33be62715991 ("net_sched: act: use standard struct list_head")
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kenneth Klette Jonassen [Tue, 3 Feb 2015 16:49:18 +0000 (17:49 +0100)]
pkt_sched: fq: avoid hang when quantum 0
Configuring fq with quantum 0 hangs the system, presumably because of a
non-interruptible infinite loop. Either way quantum 0 does not make sense.
Reproduce with:
sudo tc qdisc add dev lo root fq quantum 0 initial_quantum 0
ping 127.0.0.1
Signed-off-by: Kenneth Klette Jonassen <kennetkl@ifi.uio.no>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Forrest Liu [Fri, 30 Jan 2015 11:42:12 +0000 (19:42 +0800)]
Btrfs: add missing blk_finish_plug in btrfs_sync_log()
Add missing blk_finish_plug in btrfs_sync_log()
Signed-off-by: Forrest Liu <forrestl@synology.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Takashi Iwai [Tue, 3 Feb 2015 16:51:23 +0000 (17:51 +0100)]
drm/cirrus: Limit modes depending on bpp option
The commit [
8975626ea35a: drm/cirrus: allow 32bpp framebuffers for
cirrus drm] broke X modesetting driver because cirrus driver still
provides the full list of modes up to 1280x1024 while the 32bpp can
support only up to 800x600.
We might be able to filter out the invalid modes in mode_valid
callback, but unfortunately the bpp in question can't be referred
there for now (let me know if there is a better way to retrieve the
bpp for the probed fb).
So, instead, this patch adds the bpp module option to specify the
maximal bpp explicitly and limits the resolutions in get_modes
depending on its value.
The default value is set to 24 so that the existing stuff keeps
working. If you need a new 32bpp feature, specify cirrus.bpp=32
option explicitly.
Fixes:
8975626ea35a ('drm/cirrus: allow 32bpp framebuffers for cirrus drm')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Sasha Levin [Tue, 3 Feb 2015 13:55:58 +0000 (08:55 -0500)]
net: rds: use correct size for max unacked packets and bytes
Max unacked packets/bytes is an int while sizeof(long) was used in the
sysctl table.
This means that when they were getting read we'd also leak kernel memory
to userspace along with the timeout values.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael S. Tsirkin [Tue, 3 Feb 2015 09:07:06 +0000 (11:07 +0200)]
vhost/net: fix up num_buffers endian-ness
In virtio 1.0 mode, when mergeable buffers are enabled on a big-endian
host, num_buffers wasn't byte-swapped correctly, so large incoming
packets got corrupted.
To fix, fill it in within hdr - this also makes sure it gets
the correct type.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sanjeev Sharma [Tue, 3 Feb 2015 07:32:02 +0000 (13:02 +0530)]
gianfar: correct the bad expression while writing bit-pattern
This patch correct the bad expression while writing the
bit-pattern from software's buffer to hardware registers.
Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@mentor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chen Gang [Mon, 2 Feb 2015 21:00:40 +0000 (05:00 +0800)]
net: usb: sr9700: Use 'SR_' prefix for the common register macros
The commone register macors (e.g. RSR) is too commont to drivers, it may
be conflict with the architectures (e.g. xtensa, sh).
The related warnings (with allmodconfig under xtensa):
CC [M] drivers/net/usb/sr9700.o
In file included from drivers/net/usb/sr9700.c:24:0:
drivers/net/usb/sr9700.h:65:0: warning: "RSR" redefined
#define RSR 0x06
^
In file included from ./arch/xtensa/include/asm/bitops.h:22:0,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/net/usb/sr9700.c:13:
./arch/xtensa/include/asm/processor.h:190:0: note: this is the location of the previous definition
#define RSR(v,sr) __asm__ __volatile__ ("rsr %0,"__stringify(sr) : "=a"(v));
^
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Brown [Wed, 4 Feb 2015 20:57:31 +0000 (20:57 +0000)]
Merge remote-tracking branches 'spi/fix/fsl-dspi' and 'spi/fix/imx' into spi-linus
Geert Uytterhoeven [Wed, 4 Feb 2015 18:59:25 +0000 (10:59 -0800)]
Input: gscps2 - fix MODULE_DEVICE_TABLE invocation
The patch "module: fix types of device tables aliases" newly requires
that invocations of
MODULE_DEVICE_TABLE(type, name);
come *after* the definition of `name'. That is reasonable, but gscps2
wasn't doing this. Fix it.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linus Torvalds [Wed, 4 Feb 2015 18:22:08 +0000 (10:22 -0800)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Three small cifs fixes. One fixes a hang under stress, and the other
two are security related"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix MUST SecurityFlags filtering
Complete oplock break jobs before closing file handle
cifs: use memzero_explicit to clear stack buffer
Linus Torvalds [Wed, 4 Feb 2015 17:42:55 +0000 (09:42 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"A number of ARM fixes, the biggest is fixing a regression caused by
appended DT blobs exceeding 64K, causing the decompressor fixup code
to fail to patch the DT blob. Another important fix is for the ASID
allocator from Will Deacon which prevents some rare crashes seen on
some systems. Lastly, there's a build fix for v7M systems when printk
support is disabled.
The last two remaining fixes are more cosmetic - the IOMMU one
prevents an annoying harmless warning message, and we disable the
kernel strict memory permissions on non-MMU which can't support it
anyway"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8299/1: mm: ensure local active ASID is marked as allocated on rollover
ARM: 8298/1: ARM_KERNMEM_PERMS only works with MMU enabled
ARM: 8295/1: fix v7M build for !CONFIG_PRINTK
ARM: 8294/1: ATAG_DTB_COMPAT: remove the DT workspace's hardcoded 64KB size
ARM: 8288/1: dma-mapping: don't detach devices without an IOMMU during teardown
Lars Persson [Tue, 3 Feb 2015 16:08:17 +0000 (17:08 +0100)]
MIPS: Fix syscall_get_nr for the syscall exit tracing.
Register 2 is alredy overwritten by the return value when
syscall_trace_leave() is called.
Signed-off-by: Lars Persson <larper@axis.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9187/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Wed, 4 Feb 2015 11:59:43 +0000 (12:59 +0100)]
MIPS: elf2ecoff: Ignore PT_MIPS_ABIFLAGS program headers.
These are generated by very recent toolchains and result in an error
message when attenpting to convert a kernel from ELF to ECOFF.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Mon, 2 Feb 2015 00:01:46 +0000 (01:01 +0100)]
MIPS: elf2ecoff: Rewrite main processing loop to switch.
The if construct was getting hard to read and would be getting even more
complex with the next bug fix.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David S. Miller [Wed, 4 Feb 2015 07:06:49 +0000 (23:06 -0800)]
Merge branch 'virtio_net_ufo'
Vladislav Yasevich says:
====================
Restore UFO support to virtio_net devices
commit
3d0ad09412ffe00c9afa201d01effdb6023d09b4
Author: Ben Hutchings <ben@decadent.org.uk>
Date: Thu Oct 30 18:27:12 2014 +0000
drivers/net: Disable UFO through virtio
Turned off UFO support to virtio-net based devices due to issues
with IPv6 fragment id generation for UFO packets. The issue
was that IPv6 UFO/GSO implementation expects the fragment id
to be supplied in skb_shinfo(). However, for packets generated
by the VMs, the fragment id is not supplied which causes all
IPv6 fragments to have the id of 0.
The problem is that turning off UFO support on tap/macvtap
as well as virtio devices caused issues with migrations.
Migrations would fail when moving a vm from a kernel supporting
expecting UFO to work to the newer kernels that disabled UFO.
This series provides a partial solution to address the migration
issue. The series allows us to track whether skb_shinfo()->ip6_frag_id
has been set by treating value of 0 as unset.
This lets GSO code to generate fragment ids if they are necessary
(ex: packet was generated by VM or packet socket).
Since v3:
- Resolved build issue when IPv6 is a module.
- Removed trailing white space.
Since v2:
- Rebase and rebuild to make sure everything works. No changes
to the patches were done.
Since v1:
- Removed the skb bit and use value of 0 as tracker.
- Used Eric's suggestion to set fragment id as 0x80000000 if id
generation procedure yeilded a 0 result.
- Consolidated ipv6 id genration code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 3 Feb 2015 21:36:17 +0000 (16:36 -0500)]
Revert "drivers/net: Disable UFO through virtio"
This reverts commit
3d0ad09412ffe00c9afa201d01effdb6023d09b4.
Now that GSO functionality can correctly track if the fragment
id has been selected and select a fragment id if necessary,
we can re-enable UFO on tap/macvap and virtio devices.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 3 Feb 2015 21:36:16 +0000 (16:36 -0500)]
Revert "drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets"
This reverts commit
5188cd44c55db3e92cd9e77a40b5baa7ed4340f7.
Now that GSO layer can track if fragment id has been selected
and can allocate one if necessary, we don't need to do this in
tap and macvtap. This reverts most of the code and only keeps
the new ipv6 fragment id generation function that is still needed.
Fixes:
3d0ad09412ff (drivers/net: Disable UFO through virtio)
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Tue, 3 Feb 2015 21:36:15 +0000 (16:36 -0500)]
ipv6: Select fragment id during UFO segmentation if not set.
If the IPv6 fragment id has not been set and we perform
fragmentation due to UFO, select a new fragment id.
We now consider a fragment id of 0 as unset and if id selection
process returns 0 (after all the pertrubations), we set it to
0x80000000, thus giving us ample space not to create collisions
with the next packet we may have to fragment.
When doing UFO integrity checking, we also select the
fragment id if it has not be set yet. This is stored into
the skb_shinfo() thus allowing UFO to function correclty.
This patch also removes duplicate fragment id generation code
and moves ipv6_select_ident() into the header as it may be
used during GSO.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Peter Zijlstra [Wed, 28 Jan 2015 14:08:03 +0000 (15:08 +0100)]
sched/deadline: Fix deadline parameter modification handling
Commit
67dfa1b756f2 ("sched/deadline: Implement cancel_dl_timer() to
use in switched_from_dl()") removed the hrtimer_try_cancel() function
call out from init_dl_task_timer(), which gets called from
__setparam_dl().
The result is that we can now re-init the timer while its active --
this is bad and corrupts timer state.
Furthermore; changing the parameters of an active deadline task is
tricky in that you want to maintain guarantees, while immediately
effective change would allow one to circumvent the CBS guarantees --
this too is bad, as one (bad) task should not be able to affect the
others.
Rework things to avoid both problems. We only need to initialize the
timer once, so move that to __sched_fork() for new tasks.
Then make sure __setparam_dl() doesn't affect the current running
state but only updates the parameters used to calculate the next
scheduling period -- this guarantees the CBS functions as expected
(albeit slightly pessimistic).
This however means we need to make sure __dl_clear_params() needs to
reset the active state otherwise new (and tasks flipping between
classes) will not properly (re)compute their first instance.
Todo: close class flipping CBS hole.
Todo: implement delayed BW release.
Reported-by: Luca Abeni <luca.abeni@unitn.it>
Acked-by: Juri Lelli <juri.lelli@arm.com>
Tested-by: Luca Abeni <luca.abeni@unitn.it>
Fixes:
67dfa1b756f2 ("sched/deadline: Implement cancel_dl_timer() to use in switched_from_dl()")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Kirill Tkhai <tkhai@yandex.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150128140803.GF23038@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 4 Feb 2015 05:57:24 +0000 (06:57 +0100)]
Merge branch 'liblockdep-fixes-3.19' of git://git./linux/kernel/git/sashal/linux into core/urgent
Pull liblockdep fixes from Sasha Levin.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linus Torvalds [Wed, 4 Feb 2015 04:12:57 +0000 (20:12 -0800)]
Merge tag 'rdma-for-linus' of git://git./linux/kernel/git/roland/infiniband
Pull infiniband reverts from Roland Dreier:
"Last minute InfiniBand/RDMA changes for 3.19:
- Revert IPoIB driver back to 3.18 state. We had a number of fixes
go into 3.19, but they introduced regressions. We tried to get
everything fixed up but ran out of time, so we'll try again for
3.20.
- Similarly, turn off the new "extended query port" verb. Late in
the cycle we realized the ABI is not quite right, and rather than
freeze something in a rush and make a mistake, we'll take a bit
more time and get it right in 3.20"
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/core: Temporarily disable ex_query_device uverb
Revert "IPoIB: Consolidate rtnl_lock tasks in workqueue"
Revert "IPoIB: Make the carrier_on_task race aware"
Revert "IPoIB: fix MCAST_FLAG_BUSY usage"
Revert "IPoIB: fix mcast_dev_flush/mcast_restart_task race"
Revert "IPoIB: change init sequence ordering"
Revert "IPoIB: Use dedicated workqueues per interface"
Revert "IPoIB: Make ipoib_mcast_stop_thread flush the workqueue"
Revert "IPoIB: No longer use flush as a parameter"
Linus Torvalds [Wed, 4 Feb 2015 03:54:57 +0000 (19:54 -0800)]
Merge tag 'md/3.19-fixes' of git://neil.brown.name/md
Pull two fixes for md from Neil Brown:
- Another live lock, needs backporting
- work-around false positive with new warnings.
* tag 'md/3.19-fixes' of git://neil.brown.name/md:
md/bitmap: fix a might_sleep() warning.
md/raid5: fix another livelock caused by non-aligned writes.
Myron Stowe [Tue, 3 Feb 2015 23:01:24 +0000 (16:01 -0700)]
PCI: Handle read-only BARs on AMD CS553x devices
Some AMD CS553x devices have read-only BARs because of a firmware or
hardware defect. There's a workaround in quirk_cs5536_vsa(), but it no
longer works after
36e8164882ca ("PCI: Restore detection of read-only
BARs"). Prior to
36e8164882ca, we filled in res->start; afterwards we
leave it zeroed out. The quirk only updated the size, so the driver tried
to use a region starting at zero, which didn't work.
Expand quirk_cs5536_vsa() to read the base addresses from the BARs and
hard-code the sizes.
On Nix's system BAR 2's read-only value is 0x6200. Prior to
36e8164882ca,
we interpret that as a 512-byte BAR based on the lowest-order bit set. Per
datasheet sec 5.6.1, that BAR (MFGPT) requires only 64 bytes; use that to
avoid clearing any address bits if a platform uses only 64-byte alignment.
[bhelgaas: changelog, reduce BAR 2 size to 64]
Fixes:
36e8164882ca ("PCI: Restore detection of read-only BARs")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=85991#c4
Link: http://support.amd.com/TechDocs/31506_cs5535_databook.pdf
Link: http://support.amd.com/TechDocs/33238G_cs5536_db.pdf
Reported-and-tested-by: Nix <nix@esperi.org.uk>
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v.2.6.27+
Dave Chinner [Wed, 4 Feb 2015 00:29:05 +0000 (19:29 -0500)]
aio: annotate aio_read_event_ring for sleep patterns
Under CONFIG_DEBUG_ATOMIC_SLEEP=y, aio_read_event_ring() will throw
warnings like the following due to being called from wait_event
context:
WARNING: CPU: 0 PID: 16006 at kernel/sched/core.c:7300 __might_sleep+0x7f/0x90()
do not call blocking ops when !TASK_RUNNING; state=1 set at [<
ffffffff810d85a3>] prepare_to_wait_event+0x63/0x110
Modules linked in:
CPU: 0 PID: 16006 Comm: aio-dio-fcntl-r Not tainted 3.19.0-rc6-dgc+ #705
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
ffffffff821c0372 ffff88003c117cd8 ffffffff81daf2bd 000000000000d8d8
ffff88003c117d28 ffff88003c117d18 ffffffff8109beda ffff88003c117cf8
ffffffff821c115e 0000000000000061 0000000000000000 00007ffffe4aa300
Call Trace:
[<
ffffffff81daf2bd>] dump_stack+0x4c/0x65
[<
ffffffff8109beda>] warn_slowpath_common+0x8a/0xc0
[<
ffffffff8109bf56>] warn_slowpath_fmt+0x46/0x50
[<
ffffffff810d85a3>] ? prepare_to_wait_event+0x63/0x110
[<
ffffffff810d85a3>] ? prepare_to_wait_event+0x63/0x110
[<
ffffffff810bdfcf>] __might_sleep+0x7f/0x90
[<
ffffffff81db8344>] mutex_lock+0x24/0x45
[<
ffffffff81216b7c>] aio_read_events+0x4c/0x290
[<
ffffffff81216fac>] read_events+0x1ec/0x220
[<
ffffffff810d8650>] ? prepare_to_wait_event+0x110/0x110
[<
ffffffff810fdb10>] ? hrtimer_get_res+0x50/0x50
[<
ffffffff8121899d>] SyS_io_getevents+0x4d/0xb0
[<
ffffffff81dba5a9>] system_call_fastpath+0x12/0x17
---[ end trace
bde69eaf655a4fea ]---
There is not actually a bug here, so annotate the code to tell the
debug logic that everything is just fine and not to fire a false
positive.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Benjamin Tissoires [Tue, 3 Feb 2015 23:33:49 +0000 (15:33 -0800)]
Input: synaptics - use dmax in input_mt_assign_slots
When tapping a clickpad with two fingers, there is a chance that the sensor
sees first only one finger, and at the next scan only the second one. In
this case, the sensors says that there has been only one finger on the
clickpad, which moved really fast between two scans.
We can try to counter this by adding a limit to what an actual finger can
move between 2 scans. A distance of 1cm between two scans for one finger
seems reasonable. However, this is not really accurate because the
resolution in X and in Y differs. But heh, that's how the in-kernel
tracking works right now, and its job is quite good, even with this
approximation.
This parameter solves most of the jumps observed, not all of them however.
But this is a hardware defect, and we might not be able to get something
better without much heavier computations.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=76722
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Rob Herring [Tue, 3 Feb 2015 23:12:38 +0000 (15:12 -0800)]
Input: pxa27x_keypad - remove unnecessary ARM includes
Remove some left-over ARM only includes in order to enable building on
ARM64. __raw_{read,write}l were getting implicitly included, so add
linux/io.h include.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Vignesh R [Tue, 3 Feb 2015 19:47:05 +0000 (11:47 -0800)]
Input: ti_am335x_tsc - replace delta filtering with median filtering
Previously, delta filtering was applied TSC co-ordinate readouts before
reporting a single value to user space. This patch replaces delta filtering
with median filtering. Median filtering sorts co-ordinate readouts, drops
min and max values, and reports the average of remaining values. This
method is more sensible than delta filtering. Median filtering is applied
only if number of readouts is greater than 3 else just average of
co-ordinate readouts is reported.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>