Linus Torvalds [Fri, 14 Feb 2014 19:10:49 +0000 (11:10 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"A small error handling problem and a compile breakage for ARM64"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
arm64: KVM: Add VGIC device control for arm64
KVM: return an error code in kvm_vm_ioctl_register_coalesced_mmio()
Linus Torvalds [Fri, 14 Feb 2014 19:09:11 +0000 (11:09 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"A collection of small fixes:
- There still seem to be problems with asm goto which requires the
empty asm hack.
- If SMAP is disabled at compile time, don't enable it nor try to
interpret a page fault as an SMAP violation.
- Fix a case of unbounded recursion while tracing"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, smap: smap_violation() is bogus if CONFIG_X86_SMAP is off
x86, smap: Don't enable SMAP if CONFIG_X86_SMAP is disabled
compiler/gcc4: Make quirk for asm_volatile_goto() unconditional
x86: Use preempt_disable_notrace() in cycles_2_ns()
Linus Torvalds [Fri, 14 Feb 2014 19:07:29 +0000 (11:07 -0800)]
Merge tag 'pm+acpi-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These include a fix for a recent intel_pstate regression, a fix for a
regression in the ACPI-based PCI hotplug (ACPIPHP) code introduced
during the 3.12 cycle, fixes for two bugs in the ACPI core introduced
recently and a MAINTAINERS update related to cpufreq.
Specifics:
- Fix for a recent regression in the intel_pstate driver that
introduced a race condition causing systems to crash during
initialization in some situations. This removes the affected code
altogether. From Dirk Brandewie.
- ACPIPHP fix for a regression introduced during the 3.12 cycle
causing devices to be dropped as a result of bus check
notifications after system resume on some systems due to the way
ACPIPHP interprets _STA return values (arguably incorrectly). From
Mika Westerberg.
- ACPI dock driver fix for a problem causing docking to fail due to a
check that always fails after recent ACPI core changes (found by
code inspection).
- ACPI container driver fix to prevent memory from being leaked in an
error code path after device_register() failures.
- Update of the arm_big_little cpufreq driver maintainer's e-mail
address"
* tag 'pm+acpi-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
MAINTAINERS / cpufreq: update Sudeep's email address
intel_pstate: Remove energy reporting from pstate_sample tracepoint
ACPI / container: Fix error code path in container_device_attach()
ACPI / hotplug / PCI: Relax the checking of _STA return values
ACPI / dock: Use acpi_device_enumerated() to check if dock is present
Linus Torvalds [Fri, 14 Feb 2014 19:05:41 +0000 (11:05 -0800)]
Merge tag 'edac_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC fixes from Borislav Petkov:
"Fix polling timeout setting through sysfs.
You're surely wondering why the patches are not based on an rc. Well,
Andrew sent you 79040cad3f82 ("drivers/edac/edac_mc_sysfs.c: poll
timeout cannot be zero sent you") already (it got in in -rc2) but it
is not enough as a fix because for one, setting too low polling
intervals (< 1sec) don't make any sense and cause unnecessary polling
load on the system.
Then, even if we set some interval, we explode with
[ 4143.094342] WARNING: CPU: 1 PID: 0 at kernel/workqueue.c:1393 __queue_work+0x1d7/0x340()
because the workqueue setup path is used also for the timeout period
resetting and we're doing INIT_DELAYED_WORK() on an already active
workqueue. Which is total bollocks. So this is taken care of by the
second patch.
I've CCed stable for those two"
* tag 'edac_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC: Correct workqueue setup path
EDAC: Poll timeout cannot be zero, p2
Linus Torvalds [Fri, 14 Feb 2014 18:45:18 +0000 (10:45 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block IO fixes from Jens Axboe:
"Second round of updates and fixes for 3.14-rc2. Most of this stuff
has been queued up for a while. The notable exception is the blk-mq
changes, which are naturally a bit more in flux still.
The pull request contains:
- Two bug fixes for the new immutable vecs, causing crashes with raid
or swap. From Kent.
- Various blk-mq tweaks and fixes from Christoph. A fix for
integrity bio's from Nic.
- A few bcache fixes from Kent and Darrick Wong.
- xen-blk{front,back} fixes from David Vrabel, Matt Rushton, Nicolas
Swenson, and Roger Pau Monne.
- Fix for a vec miscount with integrity vectors from Martin.
- Minor annotations or fixes from Masanari Iida and Rashika Kheria.
- Tweak to null_blk to do more normal FIFO processing of requests
from Shlomo Pongratz.
- Elevator switching bypass fix from Tejun.
- Softlockup in blkdev_issue_discard() fix when !CONFIG_PREEMPT from
me"
* 'for-linus' of git://git.kernel.dk/linux-block: (31 commits)
block: add cond_resched() to potentially long running ioctl discard loop
xen-blkback: init persistent_purge_work work_struct
blk-mq: pair blk_mq_start_request / blk_mq_requeue_request
blk-mq: dont assume rq->errors is set when returning an error from ->queue_rq
block: Fix cloning of discard/write same bios
block: Fix type mismatch in ssize_t_blk_mq_tag_sysfs_show
blk-mq: rework flush sequencing logic
null_blk: use blk_complete_request and blk_mq_complete_request
virtio_blk: use blk_mq_complete_request
blk-mq: rework I/O completions
fs: Add prototype declaration to appropriate header file include/linux/bio.h
fs: Mark function as static in fs/bio-integrity.c
block/null_blk: Fix completion processing from LIFO to FIFO
block: Explicitly handle discard/write same segments
block: Fix nr_vecs for inline integrity vectors
blk-mq: Add bio_integrity setup to blk_mq_make_request
blk-mq: initialize sg_reserved_size
blk-mq: handle dma_drain_size
blk-mq: divert __blk_put_request for MQ ops
blk-mq: support at_head inserations for blk_execute_rq
...
Linus Torvalds [Fri, 14 Feb 2014 18:34:30 +0000 (10:34 -0800)]
Merge tag 'sound-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Again only fixes for HD-audio:
- regression fixes due to the modularization
- a few fixups for Dell, Sony and HP laptops
- a revert of the previous fix as it leads to another regression"
* tag 'sound-3.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: Revert "ALSA: hda/realtek - Avoid invalid COEFs for ALC271X"
ALSA: hda - Fix undefined symbol due to builtin/module mixup
ALSA: hda - Fix mic capture on Sony VAIO Pro 11
ALSA: hda - Add a headset quirk for Dell XPS 13
ALSA: hda - Fix inconsistent Mic mute LED
ALSA: hda - Fix leftover ifdef checks after modularization
Linus Torvalds [Fri, 14 Feb 2014 18:33:45 +0000 (10:33 -0800)]
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull RDMA/InfiniBand fixes from Roland Dreier:
- Fix some rough edges from the "IP addressing for IBoE" merge
- Other misc fixes, mostly to hardware drivers
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (21 commits)
RDMA/ocrdma: Fix load time panic during GID table init
RDMA/ocrdma: Fix traffic class shift
IB/iser: Fix use after free in iser_snd_completion()
IB/iser: Avoid dereferencing iscsi_iser conn object when not bound to iser connection
IB/usnic: Fix smatch endianness error
IB/mlx5: Remove dependency on X86
mlx5: Add include of <linux/slab.h> because of kzalloc()/kfree() use
IB/qib: Add missing serdes init sequence
RDMA/cxgb4: Add missing neigh_release in LE-Workaround path
IB: Report using RoCE IP based gids in port caps
IB/mlx4: Build the port IBoE GID table properly under bonding
IB/mlx4: Do IBoE GID table resets per-port
IB/mlx4: Do IBoE locking earlier when initializing the GID table
IB/mlx4: Move rtnl locking to the right place
IB/mlx4: Make sure GID index 0 is always occupied
IB/mlx4: Don't allocate range of steerable UD QPs for Ethernet-only device
RDMA/amso1100: Fix error return code
RDMA/nes: Fix error return code
IB/mlx5: Don't set "block multicast loopback" capability
IB/mlx5: Fix binary compatibility with libmlx5
...
Linus Torvalds [Fri, 14 Feb 2014 18:32:28 +0000 (10:32 -0800)]
Merge tag 'for-v3.14-fixes' of git://git.infradead.org/battery-2.6
Pull battery fixes from Dmitry Eremin-Solenikov:
- Fix NULL pointer dereference in max17040 driver
- Add bq2415x dts bindings documentation
- Fix misleading comment in ds2782 driver
- Remove useless check in isp1704 charger driver.
* tag 'for-v3.14-fixes' of git://git.infradead.org/battery-2.6:
power: max17040: Fix NULL pointer dereference when there is no platform_data
dt: binding documentation for bq2415x charger
isp1704_charger: remove useless check in isp1704_charger_probe()
power: ds2782_battery: Typo in comment
Dan Carpenter [Wed, 29 Jan 2014 13:18:51 +0000 (16:18 +0300)]
IB/iser: Fix use after free in iser_snd_completion()
We use "tx_desc" again after we free it.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Roi Dayan [Tue, 4 Feb 2014 14:54:54 +0000 (16:54 +0200)]
IB/iser: Avoid dereferencing iscsi_iser conn object when not bound to iser connection
Fix a possible NULL pointer dereference in disconnection flow. This
can happen if the target disconnected/rejected the connection request,
e.g before the binding stage between iscsi connection to the transport
connection.
Signed-off-by: Alex Tabachnik <alext@mellanox.com> Signed-off-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
This fixes the build breakage introduced by c07a0191ef2de1f9510f12d1f88e3b0b5cd8d66f and adds support for the device
control API and save/restore of the VGIC state for ARMv8.
The defines were simply missing from the arm64 header files and
uaccess.h must be implicitly imported from somewhere else on arm.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Borislav Petkov [Wed, 12 Feb 2014 17:15:00 +0000 (18:15 +0100)]
EDAC: Correct workqueue setup path
We're using edac_mc_workq_setup() both on the init path, when
we load an edac driver and when we change the polling period
(edac_mc_reset_delay_period) through /sys/.../edac_mc_poll_msec.
On that second path we don't need to init the workqueue which has been
initialized already.
Borislav Petkov [Mon, 3 Feb 2014 20:05:13 +0000 (15:05 -0500)]
EDAC: Poll timeout cannot be zero, p2
Sanitize code even more to accept unsigned longs only and to not allow
polling intervals below 1 second as this is unnecessary and doesn't make
much sense anyway for polling errors.
Denis Carikli [Wed, 22 Jan 2014 17:09:36 +0000 (18:09 +0100)]
video: Kconfig: Allow more broad selection of the imxfb framebuffer driver.
Without that patch, a user can't select the imxfb driver when the i.MX25
and/or the i.MX27 device tree board are selected and that no boards that
selects IMX_HAVE_PLATFORM_IMX_FB are compiled in.
Sachin Kamat [Wed, 12 Feb 2014 09:49:43 +0000 (15:19 +0530)]
video: exynos: Fix S6E8AX0 LCD driver build error
Enable S6E8AX0 LCD driver only if LCD_CLASS_DEVICE is a built-in driver.
Else we get the following errors due to missing symbols:
drivers/built-in.o: In function `s6e8ax0_probe':
:(.text+0x51aec): undefined reference to `lcd_device_register'
:(.text+0x51c44): undefined reference to `lcd_device_unregister'
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Roland Dreier [Fri, 14 Feb 2014 04:45:17 +0000 (20:45 -0800)]
mlx5: Add include of <linux/slab.h> because of kzalloc()/kfree() use
On some architectures (for example, arm), we don't end up indirectly
pulling in the declaration of kzalloc() and kfree(), and so building
anything that includes <linux/mlx5/driver.h> breaks. Fix this by adding
an explicit include to get the declaration.
Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Mike Marciniszyn [Wed, 12 Feb 2014 16:54:15 +0000 (11:54 -0500)]
IB/qib: Add missing serdes init sequence
Research has shown that commit a77fcf895046 ("IB/qib: Use a single
txselect module parameter for serdes tuning") missed a key serdes init
sequence.
This patch add that sequence.
Cc: <stable@vger.kernel.org> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Moni Shoua [Sun, 9 Feb 2014 09:54:34 +0000 (11:54 +0200)]
IB: Report using RoCE IP based gids in port caps
For userspace RoCE UD QPs we need to know the GID format that the
kernel uses, e.g when working over older kernels. For that end, add a
new port capability IB_PORT_IP_BASED_GIDS and report it when query
port is issued.
Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Moni Shoua [Wed, 5 Feb 2014 13:13:02 +0000 (15:13 +0200)]
IB/mlx4: Build the port IBoE GID table properly under bonding
When scanning netdevices we need to check a few more conditions and
cases to build the IBoE GID table properly. For example, under
bonding we must make sure that when a port is down, the bond IP
address isn't programmed as a GID, since doing so will cause failure
with IB core flows that selects ports by GID.
Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Moni Shoua [Wed, 5 Feb 2014 13:13:01 +0000 (15:13 +0200)]
IB/mlx4: Do IBoE GID table resets per-port
The IBoE code used to reset the GID table did it for all Ethernet
ports of the device. Since the whole architecture of generating GIDs
and responding to events is port-based, this is inefficient and can
lead to wrong content in the GID table. Change the reset flow to be
per-port.
Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Moni Shoua [Wed, 5 Feb 2014 13:13:00 +0000 (15:13 +0200)]
IB/mlx4: Do IBoE locking earlier when initializing the GID table
Updating the GID table under IBoE requires read/write from/to shared
data structures. These data structures are protected with the device
iboe lock. The flows that modify the GID table start from
1. Initializing the GID table
2. NETDEV events
3. INET or INET6 events
This patch makes sure that the flow of initializing the GID table is
consistent with the other two flows w.r.t on what step the lock is taken.
Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Moni Shoua [Wed, 5 Feb 2014 13:12:59 +0000 (15:12 +0200)]
IB/mlx4: Move rtnl locking to the right place
On the one hand, the invocation of netdev_master_upper_dev_get()
within mlx4_ib_scan_netdevs() must be done with rtnl lock held. On
the other hand, it's wrong to call rtnl_lock() from within this
function since it's also called by our netdev notifier callback.
Therefore move the locking to mlx4_ib_add() so that both cases are
covered.
Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Moni Shoua [Wed, 5 Feb 2014 13:12:58 +0000 (15:12 +0200)]
IB/mlx4: Make sure GID index 0 is always occupied
Make sure that for Ethernet ports, the port GID table index 0 is always
occupied with a default GID of the relevant IPv6 link-local adderss.
This provides better user experience for legacy applications that don't use
the RDMA CM and were working on index 0 prior to the IP addressing change.
Also, as GIDs are generated from IP addresses of the network devices that
are associated with the port, it's basically possible that the GID table
will be empty if no IP address was assigned. This doesn't comply with the
IB spec section 4.1.1 "GID usage and properties".
Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Matan Barak [Sun, 2 Feb 2014 15:06:47 +0000 (17:06 +0200)]
IB/mlx4: Don't allocate range of steerable UD QPs for Ethernet-only device
When the device has only Ethernet ports, don't try to allocate range
of steerable UD QPs since they aren't needed. This fixes an issue
where mlx4 VFs tried to allocate a range of UD steerable QPs, but
failed to do so.
Fixes: c1c98501121e ("IB/mlx4: Add support for steerable IB UD QPs") Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
H. Peter Anvin [Thu, 13 Feb 2014 15:46:04 +0000 (07:46 -0800)]
x86, smap: smap_violation() is bogus if CONFIG_X86_SMAP is off
If CONFIG_X86_SMAP is disabled, smap_violation() tests for conditions
which are incorrect (as the AC flag doesn't matter), causing spurious
faults.
The dynamic disabling of SMAP (nosmap on the command line) is fine
because it disables X86_FEATURE_SMAP, therefore causing the
static_cpu_has() to return false.
Found by Fengguang Wu's test system.
[ v3: move all predicates into smap_violation() ]
[ v2: use IS_ENABLED() instead of #ifdef ]
H. Peter Anvin [Thu, 13 Feb 2014 15:34:30 +0000 (07:34 -0800)]
x86, smap: Don't enable SMAP if CONFIG_X86_SMAP is disabled
If SMAP support is not compiled into the kernel, don't enable SMAP in
CR4 -- in fact, we should clear it, because the kernel doesn't contain
the proper STAC/CLAC instructions for SMAP support.
Steven Noonan [Thu, 13 Feb 2014 07:01:07 +0000 (23:01 -0800)]
compiler/gcc4: Make quirk for asm_volatile_goto() unconditional
I started noticing problems with KVM guest destruction on Linux
3.12+, where guest memory wasn't being cleaned up. I bisected it
down to the commit introducing the new 'asm goto'-based atomics,
and found this quirk was later applied to those.
Unfortunately, even with GCC 4.8.2 (which ostensibly fixed the
known 'asm goto' bug) I am still getting some kind of
miscompilation. If I enable the asm_volatile_goto quirk for my
compiler, KVM guests are destroyed correctly and the memory is
cleaned up.
So make the quirk unconditional for now, until bug is found
and fixed.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Steven Noonan <steven@uplinklabs.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/1392274867-15236-1-git-send-email-steven@uplinklabs.net Link: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 Signed-off-by: Ingo Molnar <mingo@kernel.org>
Dirk Brandewie [Wed, 12 Feb 2014 18:01:03 +0000 (10:01 -0800)]
intel_pstate: Remove energy reporting from pstate_sample tracepoint
Remove the reporting of energy since it does not provide any useful
information about the state of the driver and will be a maintainance
headache going forward since the RAPL energy units register is not
architectural and subject to change between micro-architectures
References: https://bugzilla.kernel.org/show_bug.cgi?id=69831 Fixes: b69880f9ccf7 (intel_pstate: Add trace point to report internal state.) Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds [Wed, 12 Feb 2014 20:28:05 +0000 (12:28 -0800)]
Merge tag 'stable/for-linus-3.14-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen bugfixes from Konrad Rzeszutek Wilk:
"This has an healthy amount of code being removed - which we do not use
anymore (the only user of it was ia64 Xen which had been removed
already). The other bug-fixes are to make Xen ARM be able to use the
new event channel mechanism and proper export of header files to
user-space.
Summary:
- Fix ARM and Xen FIFO not working.
- Remove more Xen ia64 vestigates.
- Fix UAPI missing Xen files"
* tag 'stable/for-linus-3.14-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
ia64/xen: Remove Xen support for ia64 even more
xen: install xen/gntdev.h and xen/gntalloc.h
xen/events: bind all new interdomain events to VCPU0
Linus Torvalds [Wed, 12 Feb 2014 17:13:09 +0000 (09:13 -0800)]
Merge tag 'regulator-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two driver fixes, one fixing the mapping of interrupts on da9055
(which previously wouldn't have worked at all) and a fix for reference
counting OF nodes in the max14577 driver"
* tag 'regulator-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: da9055: Remove use of regmap_irq_get_virq()
regulator: max14577: Add missing of_node_put
Linus Torvalds [Wed, 12 Feb 2014 17:12:04 +0000 (09:12 -0800)]
Merge tag 'gpio-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here are some accumulated patches with small fixes for this and that
in a few GPIO drivers, and a more important fix to an #ifdef in the
GPIO consumer header.
Summary:
- Get #ifdef's right in the <linux/gpio/consumer.h> header.
- Minor fixes to tb10x, clps711x, bcm281xx, intel-mid and xtensa GPIO
drivers"
* tag 'gpio-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: consumer.h: Move forward declarations outside #ifdef
gpio: tb10x: GPIO_TB10X needs to select GENERIC_IRQ_CHIP
gpio: clps711x: Add module alias to support module auto loading
gpio: bcm281xx: Update MODULE_AUTHOR
gpio: intel-mid: fix the incorrect return of idle callback
gpio: xtensa: fix build when XCHAL_HAVE_CP is 0
Linus Torvalds [Wed, 12 Feb 2014 17:11:24 +0000 (09:11 -0800)]
Merge tag 'spi-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few driver and documentation fixes, plus a fix for double error
handling which had crept in due to the confusing documentation - it
wasn't clear if the core or the driver was responsible for cleanup in
error cases so both tried to do it with unfortunate results"
* tag 'spi-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: nuc900: Set SPI_LSB_FIRST for master->mode_bits if hw->pdata->lsb is true
spi: rspi: Document support for Renesas QSPI in Kconfig
spi: Fix crash with double message finalisation on error handling
spi: correct the transfer_one_message documentation wording
spi: document the transfer_one spi_master callback
spi: spi.h: clarify the documentation of transfer_one
Linus Torvalds [Wed, 12 Feb 2014 17:02:49 +0000 (09:02 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Nothing too crazy.
Radeon irq fixes, i915 regression fixes, exynos fixes, tda998x chip
fixes, and a bunch of msm fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
drm/i915: Pair va_copy with va_end in i915_error_vprintf
drm/i915: Fix intel_pipe_to_cpu_transcoder for UMS
drm/i915: Disable dp aux irq on g4x
drm/msm: bigger synchronization hammer
drm/exynos: Convert to use the standard hdmi.h header
drm/exynos: Fix trivial typo
drm/exynos: Remove unnecessary semicolon
drm/exynos: Fix multiplatform breakage for ipp/gsc
drm/exynos: Fix freeing issues in exynos_drm_drv.c
drm/radeon: add missing include in btc_dpm.c
drm/radeon/dpm: fix uninitialized read from stack in kv_dpm_late_enable
drm/radeon: remove useless return
drm/radeon/dpm: use stored max_vddc rather than looking it up
drm/radeon/dpm: use the driver state for dpm debugfs
drm/radeon: fix UVD IRQ support on 7xx
drm/radeon: fix UVD IRQ support on SI
drm/msm: fix deadlock in bo create fail path
drm/msm/mdp4: cursor fixes
drm/msm/mdp4: pageflip fixes
drm/msm/mdp5: fix ref leaks in error paths
...
The reverted commit breaks audio through headphone line out on
the Acer TravelMate B113 (Type1Sku0) Notebook, my main work
machine. I don't know much about it but this fixes my problem.
Bisected and tested.
Fixes: d3c56568f438 ('ALSA: hda/realtek - Avoid invalid COEFs for ALC271X') Cc: <stable@vger.kernel.org> Tested-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Jens Axboe [Wed, 12 Feb 2014 16:34:01 +0000 (09:34 -0700)]
block: add cond_resched() to potentially long running ioctl discard loop
When mkfs issues a full device discard and the device only
supports discards of a smallish size, we can loop in
blkdev_issue_discard() for a long time. If preempt isn't enabled,
this can turn into a softlock situation and the kernel will
start complaining.
Add an explicit cond_resched() at the end of the loop to avoid
that.
ACPI / container: Fix error code path in container_device_attach()
To avoid leaking memory on errors from device_register(), do a
put_device() on the device object in question in the error code
path of container_device_attach().
Fixes: caa73ea158de (ACPI / hotplug / driver core: Handle containers in a special way) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Mika Westerberg [Tue, 11 Feb 2014 10:42:37 +0000 (12:42 +0200)]
ACPI / hotplug / PCI: Relax the checking of _STA return values
The ACPI specification (ACPI 5.0A, Section 6.3.7) says:
_STA may return bit 0 clear (not present) with bit 3 set (device is
functional). This case is used to indicate a valid device for which
no device driver should be loaded (for example, a bridge device.)
Children of this device may be present and valid. OSPM should
continue enumeration below a device whose _STA returns this bit
combination.
Evidently, some BIOSes follow that and return 0x0A from _STA, which
causes problems to happen when they trigger bus check or device check
notifications for those devices too. Namely, ACPIPHP thinks that they
are gone and may drop them, for example, if such a notification is
triggered during a resume from system suspend.
To fix that, modify ACPICA to regard devies as present and
functioning if _STA returns both the ACPI_STA_DEVICE_ENABLED
and ACPI_STA_DEVICE_FUNCTIONING bits set for them.
Reported-and-tested-by: Peter Wu <lekensteyn@gmail.com> Cc: 3.12+ <stable@vger.kernel.org> # 3.12+
[rjw: Subject and changelog, minor code modifications] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds [Wed, 12 Feb 2014 06:28:47 +0000 (22:28 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
"Here is some powerpc goodness for -rc2. Arguably -rc1 material more
than -rc2 but I was travelling (again !)
It's mostly bug fixes including regressions, but there are a couple of
new things that I decided to drop-in.
One is a straightforward patch from Michael to add a bunch of P8 cache
events to perf.
The other one is a patch by myself to add the direct DMA (iommu
bypass) for PCIe on Power8 for 64-bit capable devices. This has been
around for a while, I had lost track of it. However it's been in our
internal kernels we use for testing P8 already and it affects only P8
related code. Since P8 is still unreleased the risk is pretty much
nil at this point"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/powernv: Add iommu DMA bypass support for IODA2
powerpc: Fix endian issues in kexec and crash dump code
powerpc/ppc32: Fix the bug in the init of non-base exception stack for UP
powerpc/xmon: Don't signal we've entered until we're finished printing
powerpc/xmon: Fix timeout loop in get_output_lock()
powerpc/xmon: Don't loop forever in get_output_lock()
powerpc/perf: Configure BHRB filter before enabling PMU interrupts
crypto/nx/nx-842: Fix handling of vmalloc addresses
powerpc/pseries: Select ARCH_RANDOM on pseries
powerpc/perf: Add Power8 cache & TLB events
powerpc/relocate fix relocate processing in LE mode
powerpc: Fix kdump hang issue on p8 with relocation on exception enabled.
powerpc/pseries: Disable relocation on exception while going down during crash.
powerpc/eeh: Drop taken reference to driver on eeh_rmv_device
powerpc: Fix build failure in sysdev/mpic.c for MPIC_WEIRD=y
Initialize persistent_purge_work work_struct on xen_blkif_alloc (and
remove the previous initialization done in purge_persistent_gnt). This
prevents flush_work from complaining even if purge_persistent_gnt has
not been used.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Tested-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: Jens Axboe <axboe@fb.com>
Dave Airlie [Tue, 11 Feb 2014 23:51:51 +0000 (09:51 +1000)]
Merge branch 'tda998x-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-next
These are a number of fixes from the patch set which Jean-Francois has
been working on which I think are important to be merged during -rc, and
have been tested independently here. I've been in discussion with Rob,
who is happy that I send these directly to you.
* 'tda998x-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox:
drm/i2c: tda998x: fix the ENABLE_SPACE register
drm/i2c: tda998x: set the PLL division factor in range 0..3
drm/i2c: tda998x: force the page register at startup time
drm/i2c: tda998x: free the CEC device on encoder_destroy
drm/i2c: tda998x: check the CEC device creation
drm/i2c: tda998x: fix bad value in the AIF
Dave Airlie [Tue, 11 Feb 2014 23:51:16 +0000 (09:51 +1000)]
Merge tag 'drm-intel-fixes-2014-02-11' of ssh://git.freedesktop.org/git/drm-intel into drm-next
3 regression fixes in i915
* tag 'drm-intel-fixes-2014-02-11' of ssh://git.freedesktop.org/git/drm-intel:
drm/i915: Pair va_copy with va_end in i915_error_vprintf
drm/i915: Fix intel_pipe_to_cpu_transcoder for UMS
drm/i915: Disable dp aux irq on g4x
Linus Torvalds [Tue, 11 Feb 2014 20:37:35 +0000 (12:37 -0800)]
Merge tag 'dt-fixes-for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- Fix compile error drivers/spi/spi-rspi.c with !CONFIG_OF
- Fix warnings for unused/uninitialized variables with !CONFIG_OF
- Fix PCIe bus matching for powerpc
- Add documentation for various vendor strings
* tag 'dt-fixes-for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
DT: Add vendor prefix for Spansion Inc.
of/device: Nullify match table in of_match_device() for CONFIG_OF=n
dt-bindings: add vendor-prefix for neonode
of: fix PCI bus match for PCIe slots
of: restructure for_each macros to fix compile warnings
of: add vendor prefix for Honeywell
of: Update qcom vendor prefix description
of: add vendor prefix for Allwinner Technology
Linus Torvalds [Tue, 11 Feb 2014 20:24:35 +0000 (12:24 -0800)]
Merge tag 'microblaze-3.14-rc3' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze fixes from Michal Simek:
- Fix two compilation issues - HZ, readq/writeq
- Fix stack protection support
* tag 'microblaze-3.14-rc3' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix a typo when disabling stack protection
microblaze: Define readq and writeq IO helper function
microblaze: Fix missing HZ macro
Linus Torvalds [Tue, 11 Feb 2014 20:23:50 +0000 (12:23 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 bugfixes from Martin Schwidefsky:
"A collection a bug fixes. Most of them are minor but two of them are
more severe. The linkage stack bug can be used by user space to force
an oops, with panic_on_oops this is a denial-of-service. And the dump
memory detection issue can cause incomplete memory dumps"
1) Fix flexcan build on big endian, from Arnd Bergmann
2) Correctly attach cpsw to GPIO bitbang MDIO drive, from Stefan Roese
3) udp_add_offload has to use GFP_ATOMIC since it can be invoked from
non-sleepable contexts. From Or Gerlitz
4) vxlan_gro_receive() does not iterate over all possible flows
properly, fix also from Or Gerlitz
5) CAN core doesn't use a proper SKB destructor when it hooks up
sockets to SKBs. Fix from Oliver Hartkopp
6) ip_tunnel_xmit() can use an uninitialized route pointer, fix from
Eric Dumazet
7) Fix address family assignment in IPVS, from Michal Kubecek
8) Fix ath9k build on ARM, from Sujith Manoharan
9) Make sure fail_over_mac only applies for the correct bonding modes,
from Ding Tianhong
10) The udp offload code doesn't use RCU correctly, from Shlomo Pongratz
11) Handle gigabit features properly in generic PHY code, from Florian
Fainelli
12) Don't blindly invoke link operations in
rtnl_link_get_slave_info_data_size, they are optional. Fix from
Fernando Luis Vazquez Cao
13) Add USB IDs for Netgear Aircard 340U, from Bjørn Mork
14) Handle netlink packet padding properly in openvswitch, from Thomas
Graf
15) Fix oops when deleting chains in nf_tables, from Patrick McHardy
16) Fix RX stalls in xen-netback driver, from Zoltan Kiss
17) Fix deadlock in mac80211 stack, from Emmanuel Grumbach
18) inet_nlmsg_size() forgets to consider ifa_cacheinfo, fix from Geert
Uytterhoeven
19) tg3_change_mtu() can deadlock, fix from Nithin Sujir
20) Fix regression in setting SCTP local source addresses on accepted
sockets, caused by some generic ipv6 socket changes. Fix from
Matija Glavinic Pecotic
21) IPPROTO_* must be pure defines, otherwise module aliases don't get
constructed properly. Fix from Jan Moskyto
22) IPV6 netconsole setup doesn't work properly unless an explicit
source address is specified, fix from Sabrina Dubroca
23) Use __GFP_NORETRY for high order skb page allocations in
sock_alloc_send_pskb and skb_page_frag_refill. From Eric Dumazet
24) Fix a regression added in netconsole over bridging, from Cong Wang
25) TCP uses an artificial offset of 1ms for SRTT, but this doesn't jive
well with TCP pacing which needs the SRTT to be accurate. Fix from
Eric Dumazet
26) Several cases of missing header file includes from Rashika Kheria
27) Add ZTE MF667 device ID to qmi_wwan driver, from Raymond Wanyoike
28) TCP Small Queues doesn't handle nonagle properly in some corner
cases, fix from Eric Dumazet
29) Remove extraneous read_unlock in bond_enslave, whoops. From Ding
Tianhong
30) Fix 9p trans_virtio handling of vmalloc buffers, from Richard Yao
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (136 commits)
6lowpan: fix lockdep splats
alx: add missing stats_lock spinlock init
9p/trans_virtio.c: Fix broken zero-copy on vmalloc() buffers
bonding: remove unwanted bond lock for enslave processing
USB2NET : SR9800 : One chip USB2.0 USB2NET SR9800 Device Driver Support
tcp: tsq: fix nonagle handling
bridge: Prevent possible race condition in br_fdb_change_mac_address
bridge: Properly check if local fdb entry can be deleted when deleting vlan
bridge: Properly check if local fdb entry can be deleted in br_fdb_delete_by_port
bridge: Properly check if local fdb entry can be deleted in br_fdb_change_mac_address
bridge: Fix the way to check if a local fdb entry can be deleted
bridge: Change local fdb entries whenever mac address of bridge device changes
bridge: Fix the way to find old local fdb entries in br_fdb_change_mac_address
bridge: Fix the way to insert new local fdb entries in br_fdb_changeaddr
bridge: Fix the way to find old local fdb entries in br_fdb_changeaddr
tcp: correct code comment stating 3 min timeout for FIN_WAIT2, we only do 1 min
net: vxge: Remove unused device pointer
net: qmi_wwan: add ZTE MF667
3c59x: Remove unused pointer in vortex_eisa_cleanup()
net: fix 'ip rule' iif/oif device rename
...
Make sure we have a proper pairing between starting and requeueing
requests. Move the dma drain and REQ_END setup into blk_mq_start_request,
and make sure blk_mq_requeue_request properly undoes them, giving us
a pair of function to prepare and unprepare a request without leaving
side effects.
Together this ensures we always clean up properly after
BLK_MQ_RQ_QUEUE_BUSY returns from ->queue_rq.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
blk-mq: dont assume rq->errors is set when returning an error from ->queue_rq
rq->errors never has been part of the communication protocol between drivers
and the block stack and most drivers will not have initialized it.
Return -EIO to upper layers when the driver returns BLK_MQ_RQ_QUEUE_ERROR
unconditionally. If a driver want to return a different error it can easily
do so by returning success after calling blk_mq_end_io itself.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Kent Overstreet [Tue, 11 Feb 2014 01:45:50 +0000 (17:45 -0800)]
block: Fix cloning of discard/write same bios
Immutable biovecs changed the way bio segments are treated in such a way that
bio_for_each_segment() cannot now do what we want for discard/write same bios,
since bi_size means something completely different for them.
Fortunately discard and write same bios never have more than a single biovec, so
bio_for_each_segment() is unnecessary and not terribly meaningful for them, but
we still have to special case them in a few places.
Signed-off-by: Kent Overstreet <kmo@daterainc.com> Tested-by: Richard W.M. Jones <rjones@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Paul Bolle [Sat, 8 Feb 2014 22:35:43 +0000 (23:35 +0100)]
ia64/xen: Remove Xen support for ia64 even more
Commit d52eefb47d4e ("ia64/xen: Remove Xen support for ia64") removed
the Kconfig symbol XEN_XENCOMM. But it didn't remove the code depending
on that symbol. Remove that code now.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
The kernel-side VCPU binding was not being correctly set for newly
allocated or bound interdomain events. In ARM guests where 2-level
events were used, this would result in no interdomain events being
handled because the kernel-side VCPU masks would all be clear.
x86 guests would work because the irq affinity was set during irq
setup and this would set the correct kernel-side VCPU binding.
Fix this by properly initializing the kernel-side VCPU binding in
bind_evtchn_to_irq().
Reported-and-tested-by: Julien Grall <julien.grall@linaro.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tomi Valkeinen [Tue, 28 Jan 2014 06:50:47 +0000 (08:50 +0200)]
OMAPDSS: fix fck field types
'fck' field in dpi and sdi clock calculation struct is 'unsigned long
long', even though it should be 'unsigned long'. This hasn't caused any
issues so far.
Fix the field's type.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tomi Valkeinen [Mon, 27 Jan 2014 09:29:53 +0000 (11:29 +0200)]
OMAPDSS: DISPC: decimation rounding fix
The driver uses DIV_ROUND_UP when calculating decimated width & height.
For example, when decimating with 3, the width is calculated as:
width = DIV_ROUND_UP(width, decim_x);
This yields bad results for some values. For example, 800/3=266.666...,
which is rounded to 267. When the input width is set to 267, and pixel
increment is set to 3, this causes the dispc to read a line of 801
pixels, i.e. it reads a wrong pixel at the end of the line.
Even more pressing, the above rounding causes a BUG() in pixinc(), as
the value of 801 is used to calculate row increment, leading to a bad
value being passed to pixinc().
This patch fixes the decimation by removing the DIV_ROUND_UP()s when
calculating width and height for decimation.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
drm/i915: Use a temporary va_list for two-pass string handling
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
powerpc/powernv: Add iommu DMA bypass support for IODA2
This patch adds the support for to create a direct iommu "bypass"
window on IODA2 bridges (such as Power8) allowing to bypass iommu
page translation completely for 64-bit DMA capable devices, thus
significantly improving DMA performances.
Additionally, this adds a hook to the struct iommu_table so that
the IOMMU API / VFIO can disable the bypass when external ownership
is requested, since in that case, the device will be used by an
environment such as userspace or a KVM guest which must not be
allowed to bypass translations.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Dave Airlie [Tue, 11 Feb 2014 02:57:27 +0000 (12:57 +1000)]
Merge tag 'drm-intel-fixes-2014-02-06' of ssh://git.freedesktop.org/git/drm-intel into drm-next
Just minor stuff really, on vlv dp fix and two patches to tune down some
opregion sanity check. Plus MAINTAINERS update for the new git repo, which
is the only reason I've really bothered with this pull request.
* tag 'drm-intel-fixes-2014-02-06' of ssh://git.freedesktop.org/git/drm-intel:
drm/i915: demote opregion excessive timeout WARN_ONCE to DRM_INFO_ONCE
drm: add DRM_INFO_ONCE() to print a one-time DRM_INFO() message
MAINTAINERS: Update drm/i915 git repo
drm/i915: vlv: fix DP PHY lockup due to invalid PP sequencer setup
Dave Airlie [Tue, 11 Feb 2014 02:56:57 +0000 (12:56 +1000)]
Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
This pull request fixes memory leak issue in exynos_drm_open() and
multiplatform breakage for ipp/gsc. And also including some cleanups.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: Convert to use the standard hdmi.h header
drm/exynos: Fix trivial typo
drm/exynos: Remove unnecessary semicolon
drm/exynos: Fix multiplatform breakage for ipp/gsc
drm/exynos: Fix freeing issues in exynos_drm_drv.c
Dave Airlie [Tue, 11 Feb 2014 02:56:17 +0000 (12:56 +1000)]
Merge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm-next
Compared to original fixes pull req that I sent yesterday, this adds
one more fix that I found for a synchronization issue which starts to
crop up when we use XA in DDX for 2d accel on 3d core. In particular,
accelerating presentation blit triggers this problem.
* 'msm-next' of git://people.freedesktop.org/~robclark/linux:
drm/msm: bigger synchronization hammer
drm/msm: fix deadlock in bo create fail path
drm/msm/mdp4: cursor fixes
drm/msm/mdp4: pageflip fixes
drm/msm/mdp5: fix ref leaks in error paths
drm/msm: fix inconsequential typo
Eric Dumazet [Mon, 10 Feb 2014 19:42:35 +0000 (11:42 -0800)]
6lowpan: fix lockdep splats
When a device ndo_start_xmit() calls again dev_queue_xmit(),
lockdep can complain because dev_queue_xmit() is re-entered and the
spinlocks protecting tx queues share a common lockdep class.
Same issue was fixed for bonding/l2tp/ppp in commits
0daa2303028a6 ("[PATCH] bonding: lockdep annotation") 49ee49202b4ac ("bonding: set qdisc_tx_busylock to avoid LOCKDEP splat") 23d3b8bfb8eb2 ("net: qdisc busylock needs lockdep annotations ") 303c07db487be ("ppp: set qdisc_tx_busylock to avoid LOCKDEP splat ")
Reported-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
John Greene [Mon, 10 Feb 2014 19:34:04 +0000 (14:34 -0500)]
alx: add missing stats_lock spinlock init
Trivial fix for init time stack trace occuring in
alx_get_stats64 upon start up. Should have been part of
commit adding the spinlock: f1b6b106 alx: add alx_get_stats64 operation
Signed-off-by: John Greene <jogreene@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Yao [Sun, 9 Feb 2014 00:32:01 +0000 (19:32 -0500)]
9p/trans_virtio.c: Fix broken zero-copy on vmalloc() buffers
The 9p-virtio transport does zero copy on things larger than 1024 bytes
in size. It accomplishes this by returning the physical addresses of
pages to the virtio-pci device. At present, the translation is usually a
bit shift.
That approach produces an invalid page address when we read/write to
vmalloc buffers, such as those used for Linux kernel modules. Any
attempt to load a Linux kernel module from 9p-virtio produces the
following stack.
qemu-system-x86_64: virtio: trying to map MMIO memory
This patch enables 9p-virtio to correctly handle this case. This not
only enables us to load Linux kernel modules off virtfs, but also
enables ZFS file-based vdevs on virtfs to be used without killing QEMU.
Special thanks to both Avi Kivity and Alexander Graf for their
interpretation of QEMU backtraces. Without their guidence, tracking down
this bug would have taken much longer. Also, special thanks to Linus
Torvalds for his insightful explanation of why this should use
is_vmalloc_addr() instead of is_vmalloc_or_module_addr():
https://lkml.org/lkml/2014/2/8/272
Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: David S. Miller <davem@davemloft.net>
dingtianhong [Mon, 10 Feb 2014 08:33:59 +0000 (16:33 +0800)]
bonding: remove unwanted bond lock for enslave processing
The bond enslave processing don't hold bond->lock anymore,
so release an unlocked rw lock will cause warning message,
remove the unwanted read_unlock(&bond->lock).
Cc: Jay Vosburgh <fubar@us.ibm.com> Cc: Veaceslav Falico <vfalico@redhat.com> Cc: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> Acked-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Kevin Hao [Wed, 29 Jan 2014 10:24:54 +0000 (18:24 +0800)]
powerpc/ppc32: Fix the bug in the init of non-base exception stack for UP
We would allocate one specific exception stack for each kind of
non-base exceptions for every CPU. For ppc32 the CPU hard ID is
used as the subscript to get the specific exception stack for
one CPU. But for an UP kernel, there is only one element in the
each kind of exception stack array. We would get stuck if the
CPU hard ID is not equal to '0'. So in this case we should use the
subscript '0' no matter what the CPU hard ID is.
Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Mon, 23 Dec 2013 12:46:06 +0000 (23:46 +1100)]
powerpc/xmon: Don't signal we've entered until we're finished printing
Currently we set our cpu's bit in cpus_in_xmon, and then we take the
output lock and print the exception information.
This can race with the master cpu entering the command loop and printing
the backtrace. The result is that the backtrace gets garbled with
another cpu's exception print out.
Fix it by delaying the set of cpus_in_xmon until we are finished
printing.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Mon, 23 Dec 2013 12:46:05 +0000 (23:46 +1100)]
powerpc/xmon: Fix timeout loop in get_output_lock()
As far as I can tell, our 70s era timeout loop in get_output_lock() is
generating no code.
This leads to the hostile takeover happening more or less simultaneously
on all cpus. The result is "interesting", some example output that is
more readable than most:
Fix it by using udelay() in the timeout loop. The wait time and check
frequency are arbitrary, but seem to work OK. We already rely on
udelay() working so this is not a new dependency.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Mon, 23 Dec 2013 12:46:04 +0000 (23:46 +1100)]
powerpc/xmon: Don't loop forever in get_output_lock()
If we enter with xmon_speaker != 0 we skip the first cmpxchg(), we also
skip the while loop because xmon_speaker != last_speaker (0) - meaning we
skip the second cmpxchg() also.
Following that code path the compiler sees no memory barriers and so is
within its rights to never reload xmon_speaker. The end result is we loop
forever.
This manifests as all cpus being in xmon ('c' command), but they refuse
to take control when you switch to them ('c x' for cpu # x).
I have seen this deadlock in practice and also checked the generated code to
confirm this is what's happening.
The simplest fix is just to always try the cmpxchg().
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/perf: Configure BHRB filter before enabling PMU interrupts
Right now the config_bhrb() PMU specific call happens after
write_mmcr0(), which actually enables the PMU for event counting and
interrupts. So there is a small window of time where the PMU and BHRB
runs without the required HW branch filter (if any) enabled in BHRB.
This can cause some of the branch samples to be collected through BHRB
without any filter applied and hence affects the correctness of
the results. This patch moves the BHRB config function call before
enabling interrupts.
Here are some data points captured via trace prints which depicts how we
could get PMU interrupts with BHRB filter NOT enabled with a standard
perf record command line (asking for branch record information as well).
All the PMU interrupts have the requested HW BHRB branch filter
enabled in MMCRA.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
[mpe: Fixed up whitespace and cleaned up changelog] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Nathan Fontenot [Wed, 29 Jan 2014 16:34:56 +0000 (10:34 -0600)]
crypto/nx/nx-842: Fix handling of vmalloc addresses
The powerpc specific nx-842 compression driver does not currently
handle translating a vmalloc address to a physical address.
The current driver uses __pa() for all addresses which does not
properly handle vmalloc addresses and thus causes a failure since
we do not pass a proper physical address to the hypervisor.
This patch adds a routine to convert an address to a physical
address by checking for vmalloc addresses and handling them properly.
Laurent Dufour [Thu, 30 Jan 2014 15:58:42 +0000 (16:58 +0100)]
powerpc/relocate fix relocate processing in LE mode
Relocation's code is not working in little endian mode because the r_info
field, which is a 64 bits value, should be read from the right offset.
The current code is optimized to read the r_info field as a 32 bits value
starting at the middle of the double word (offset 12). When running in LE
mode, the read value is not correct since only the MSB is read.
This patch removes this optimization which consist to deal with a 32 bits
value instead of a 64 bits one. This way it works in big and little endian
mode.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc: Fix kdump hang issue on p8 with relocation on exception enabled.
On p8 systems, with relocation on exception feature enabled we are seeing
kdump kernel hang at interrupt vector 0xc*4400. The reason is, with this
feature enabled, exception are raised with MMU (IR=DR=1) ON with the
default offset of 0xc*4000. Since exception is raised in virtual mode it
requires the vector region to be executable without which it fails to
fetch and execute instruction at 0xc*4xxx. For default kernel since kernel
is loaded at real 0, the htab mappings sets the entire kernel text region
executable. But for relocatable kernel (e.g. kdump case) we only copy
interrupt vectors down to real 0 and never marked that region as
executable because in p7 and below we always get exception in real mode.
This patch fixes this issue by marking htab mapping range as executable
that overlaps with the interrupt vector region for relocatable kernel.
Thanks to Ben who helped me to debug this issue and find the root cause.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/pseries: Disable relocation on exception while going down during crash.
Disable relocation on exception while going down even in kdump case. This
is because we are about clear htab mappings while kexec-ing into kdump
kernel and we may run into issues if we still have AIL ON.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/eeh: Drop taken reference to driver on eeh_rmv_device
Commit f5c57710dd62dd06f176934a8b4b8accbf00f9f8 ("powerpc/eeh: Use
partial hotplug for EEH unaware drivers") introduces eeh_rmv_device,
which may grab a reference to a driver, but not release it.
That prevents a driver from being removed after it has gone through EEH
recovery.
This patch drops the reference if it was taken.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC arch/powerpc/sysdev/mpic.o
arch/powerpc/sysdev/mpic.c: In function 'mpic_set_irq_type':
arch/powerpc/sysdev/mpic.c:886:9: error: case label does not reduce to an integer constant
arch/powerpc/sysdev/mpic.c:890:9: error: case label does not reduce to an integer constant
arch/powerpc/sysdev/mpic.c:894:9: error: case label does not reduce to an integer constant
arch/powerpc/sysdev/mpic.c:898:9: error: case label does not reduce to an integer constant
Looking at the cpp output (gcc 4.7.3), I see:
case mpic->hw_set[MPIC_IDX_VECPRI_SENSE_EDGE] |
mpic->hw_set[MPIC_IDX_VECPRI_POLARITY_POSITIVE]:
The pointer into an array appears because CONFIG_MPIC_WEIRD=y is set
for this platform, thus enabling the following:
Here we convert the case section to if/else if, and also add
the equivalent of a default case to warn about unknown types.
Boot tested on sbc8548, build tested on all defconfigs.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Linus Torvalds [Tue, 11 Feb 2014 00:03:16 +0000 (16:03 -0800)]
Merge branch 'akpm' (patches from Andrew Morton)
Merge misc fixes from Andrew Morton:
"A bunch of fixes"
* emailed patches fron Andrew Morton <akpm@linux-foundation.org>:
ocfs2: check existence of old dentry in ocfs2_link()
ocfs2: update inode size after zeroing the hole
ocfs2: fix issue that ocfs2_setattr() does not deal with new_i_size==i_size
mm/memory-failure.c: move refcount only in !MF_COUNT_INCREASED
smp.h: fix x86+cpu.c sparse warnings about arch nonboot CPU calls
mm: fix page leak at nfs_symlink()
slub: do not assert not having lock in removing freed partial
gitignore: add all.config
ocfs2: fix ocfs2_sync_file() if filesystem is readonly
drivers/edac/edac_mc_sysfs.c: poll timeout cannot be zero
fs/file.c:fdtable: avoid triggering OOMs from alloc_fdmem
xen: properly account for _PAGE_NUMA during xen pte translations
mm/slub.c: list_lock may not be held in some circumstances
drivers/md/bcache/extents.c: use %zi to format size_t
vmcore: prevent PT_NOTE p_memsz overflow during header update
drivers/message/i2o/i2o_config.c: fix deadlock in compat_ioctl(I2OGETIOPS)
Documentation/: update 00-INDEX files
checkpatch: fix detection of git repository
get_maintainer: fix detection of git repository
drivers/misc/sgi-gru/grukdump.c: unlocking should be conditional in gru_dump_context()
Xue jiufei [Mon, 10 Feb 2014 22:25:54 +0000 (14:25 -0800)]
ocfs2: check existence of old dentry in ocfs2_link()
System call linkat first calls user_path_at(), check the existence of
old dentry, and then calls vfs_link()->ocfs2_link() to do the actual
work. There may exist a race when Node A create a hard link for file
while node B rm it.
Node A Node B
user_path_at()
->ocfs2_lookup(),
find old dentry exist
rm file, add inode say inodeA
to orphan_dir
call ocfs2_link(),create a
hard link for inodeA.
rm the link, add inodeA to orphan_dir
again
When orphan_scan work start, it calls ocfs2_queue_orphans() to do the
main work. It first tranverses entrys in orphan_dir, linking all inodes
in this orphan_dir to a list look like this:
inodeA->inodeB->...->inodeA
When tranvering this list, it will fall into loop, calling iput() again
and again. And finally trigger BUG_ON(inode->i_state & I_CLEAR).
Signed-off-by: joyce <xuejiufei@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Junxiao Bi [Mon, 10 Feb 2014 22:25:53 +0000 (14:25 -0800)]
ocfs2: update inode size after zeroing the hole
fs-writeback will release the dirty pages without page lock whose offset
are over inode size, the release happens at
block_write_full_page_endio(). If not update, dirty pages in file holes
may be released before flushed to the disk, then file holes will contain
some non-zero data, this will cause sparse file md5sum error.
To reproduce the bug, find a big sparse file with many holes, like vm
image file, its actual size should be bigger than available mem size to
make writeback work more frequently, tar it with -S option, then keep
untar it and check its md5sum again and again until you get a wrong
md5sum.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Younger Liu <younger.liu@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Younger Liu [Mon, 10 Feb 2014 22:25:51 +0000 (14:25 -0800)]
ocfs2: fix issue that ocfs2_setattr() does not deal with new_i_size==i_size
The issue scenario is as following:
- Create a small file and fallocate a large disk space for a file with
FALLOC_FL_KEEP_SIZE option.
- ftruncate the file back to the original size again. but the disk free
space is not changed back. This is a real bug that be fixed in this
patch.
In order to solve the issue above, we modified ocfs2_setattr(), if
attr->ia_size != i_size_read(inode), It calls ocfs2_truncate_file(), and
truncate disk space to attr->ia_size.
Signed-off-by: Younger Liu <younger.liu@huawei.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Tested-by: Jie Liu <jeff.liu@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Sunil Mushran <sunil.mushran@gmail.com> Reviewed-by: Jensen <shencanquan@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Naoya Horiguchi [Mon, 10 Feb 2014 22:25:50 +0000 (14:25 -0800)]
mm/memory-failure.c: move refcount only in !MF_COUNT_INCREASED
mce-test detected a test failure when injecting error to a thp tail
page. This is because we take page refcount of the tail page in
madvise_hwpoison() while the fix in commit a3e0f9e47d5e
("mm/memory-failure.c: transfer page count from head page to tail page
after split thp") assumes that we always take refcount on the head page.
When a real memory error happens we take refcount on the head page where
memory_failure() is called without MF_COUNT_INCREASED set, so it seems
to me that testing memory error on thp tail page using madvise makes
little sense.
This patch cancels moving refcount in !MF_COUNT_INCREASED for valid
testing.
[akpm@linux-foundation.org: s/&&/&/] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Chen Gong <gong.chen@linux.intel.com> Cc: <stable@vger.kernel.org> [3.9+: a3e0f9e47d5e] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / ~andy / linux / log