Commit 371f0f085f ("ARM: 8426/1: dma-mapping: add missing range check
in dma_mmap()") introduced offset-checking for mappings, which collides
with the fake-offset the drm sets for gems.
Other drm-drivers set this offset to 0 before doing the mapping, so
this looks like the correct way to go for rockchip as well.
Fixes: 371f0f085f ("ARM: 8426/1: dma-mapping: add missing range check in dma_mmap()")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The set_event_pid filter relies on attaching to the sched_switch and
sched_wakeup tracepoints to see if it should filter the tracing on schedule
tracepoints. By adding the callbacks to sched_wakeup, pids in the
set_event_pid file will trace the wakeups of those tasks with those pids.
But sched_wakeup_new and sched_waking were missed. These two should also be
traced. Luckily, these tracepoints share the same class as sched_wakeup
which means they can use the same pre and post callbacks as sched_wakeup
does.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Dmitry provided a syzkaller (http://github.com/google/syzkaller)
triggering a fault in sock_wake_async() when async IO is requested.
Said program stressed af_unix sockets, but the issue is generic
and should be addressed in core networking stack.
The problem is that by the time sock_wake_async() is called,
we should not access the @flags field of 'struct socket',
as the inode containing this socket might be freed without
further notice, and without RCU grace period.
We already maintain an RCU protected structure, "struct socket_wq"
so moving SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA into it
is the safe route.
It also reduces number of cache lines needing dirtying, so might
provide a performance improvement anyway.
In followup patches, we might move remaining flags (SOCK_NOSPACE,
SOCK_PASSCRED, SOCK_PASSSEC) to save 8 bytes and let 'struct socket'
being mostly read and let it being shared between cpus.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is a cleanup to make following patch easier to
review.
Goal is to move SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
from (struct socket)->flags to a (struct socket_wq)->flags
to benefit from RCU protection in sock_wake_async()
To ease backports, we rename both constants.
Two new helpers, sk_set_bit(int nr, struct sock *sk)
and sk_clear_bit(int net, struct sock *sk) are added so that
following patch can change their implementation.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recent patches added basic support for the Apple NVMe controller but
still cause resets and data corruption on that particular controller
when a specific pattern of read/flush commands occurs. Limiting the
queue depth to 2 works around that issue.
This patch enforces that limit only for the Apple controller and is
considered a temporary fix until we find the root source of that
problem.
Signed-off-by: Stephan Günther <guenther@tum.de>
Signed-off-by: Maurice Leclaire <leclaire@in.tum.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
vmxnet3_drv does not check dma_addr with dma_mapping_error()
after mapping dma memory. The patch adds the checks and
tries to handle failures.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The N_X25 line discipline may access the previous line discipline's closed
and already-freed private data on open [1].
The tty->disc_data field _never_ refers to valid data on entry to the
line discipline's open() method. Rather, the ldisc is expected to
initialize that field for its own use for the lifetime of the instance
(ie. from open() to close() only).
[1]
[ 634.336761] ==================================================================
[ 634.338226] BUG: KASAN: use-after-free in x25_asy_open_tty+0x13d/0x490 at addr ffff8800a743efd0
[ 634.339558] Read of size 4 by task syzkaller_execu/8981
[ 634.340359] =============================================================================
[ 634.341598] BUG kmalloc-512 (Not tainted): kasan: bad access detected
...
[ 634.405018] Call Trace:
[ 634.405277] dump_stack (lib/dump_stack.c:52)
[ 634.405775] print_trailer (mm/slub.c:655)
[ 634.406361] object_err (mm/slub.c:662)
[ 634.406824] kasan_report_error (mm/kasan/report.c:138 mm/kasan/report.c:236)
[ 634.409581] __asan_report_load4_noabort (mm/kasan/report.c:279)
[ 634.411355] x25_asy_open_tty (drivers/net/wan/x25_asy.c:559 (discriminator 1))
[ 634.413997] tty_ldisc_open.isra.2 (drivers/tty/tty_ldisc.c:447)
[ 634.414549] tty_set_ldisc (drivers/tty/tty_ldisc.c:567)
[ 634.415057] tty_ioctl (drivers/tty/tty_io.c:2646 drivers/tty/tty_io.c:2879)
[ 634.423524] do_vfs_ioctl (fs/ioctl.c:43 fs/ioctl.c:607)
[ 634.427491] SyS_ioctl (fs/ioctl.c:622 fs/ioctl.c:613)
[ 634.427945] entry_SYSCALL_64_fastpath (arch/x86/entry/entry_64.S:188)
Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit ab450605b3.
In IPv6, we cannot inherit the dst of the original dst. ndisc packets
are IPv6 packets and may take another route than the original packet.
This patch breaks the following scenario: a packet comes from eth0 and
is forwarded through vxlan1. The encapsulated packet triggers an NS
which cannot be sent because of the wrong route.
CC: Jiri Benc <jbenc@redhat.com>
CC: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit at least doubles the maximum value for
completion_nsec. This helps in special cases where one wants/needs to
emulate an extremely slow I/O (for example to spot bugs).
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna Avanzini <avanzini@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
In single-queue (block layer) mode,the function null_rq_prep_fn stops
the device if alloc_cmd fails. Then, once stopped, the device must be
restarted on the next command completion, so that the request(s) for
which alloc_cmd failed can be requeued. Otherwise the device hangs.
Unfortunately, device restart is currently performed only for delayed
completions, i.e., in irqmode==2. This fact causes hangs, for the
above reasons, with the other irqmodes in combination with single-queue
block layer.
This commits addresses this issue by making sure that, if stopped, the
device is properly restarted for all irqmodes on completions.
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna AVanzini <avanzini@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
For the Timer IRQ mode (i.e., when command completions are delayed),
there is one timer for each CPU. Each of these timers
. has a completion queue associated with it, containing all the
command completions to be executed when the timer fires;
. is set, and a new completion-to-execute is inserted into its
completion queue, every time the dispatch code for a new command
happens to be executed on the CPU related to the timer.
This implies that, if the dispatch of a new command happens to be
executed on a CPU whose timer has already been set, but has not yet
fired, then the timer is set again, to the completion time of the
newly arrived command. When the timer eventually fires, all its queued
completions are executed.
This way of handling delayed command completions entails the following
problem: if more than one command completion is inserted into the
queue of a timer before the timer fires, then the expiration time for
the timer is moved forward every time each of these completions is
enqueued. As a consequence, only the last completion enqueued enjoys a
correct execution time, while all previous completions are unjustly
delayed until the last completion is executed (and at that time they
are executed all together).
Specifically, if all the above completions are enqueued almost at the
same time, then the problem is negligible. On the opposite end, if
every completion is enqueued a while after the previous completion was
enqueued (in the extreme case, it is enqueued only right before the
timer would have expired), then every enqueued completion, except for
the last one, experiences an inflated delay, proportional to the number
of completions enqueued after it. In the end, commands, and thus I/O
requests, may be completed at an arbitrarily lower rate than the
desired one.
This commit addresses this issue by replacing per-CPU timers with
per-command timers, i.e., by associating an individual timer with each
command.
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna Avanzini <avanzini@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
When doing the initial setup both the hclk and the aclk need to be
enabled otherwise the board will simply hang. This only occurs when
building the vop driver as a module, when its built-in the initial setup
happens to run before the clock framework shuts of unused clocks
(including the aclk).
While there also switch to doing prepare and enable in one step rather
then separate steps to reduce the amount of code required.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Mark Yao <mark.yao@rock-chips.com>
Tested-by: Yakir Yang <ykk@rock-chips.com>
Tested-by: Romain Perier <romain.perier@gmail.com>
When building for SH7734:
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:2: error: '_GP_DATA' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
...
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:1: error: macro "_GP_INOUTSEL" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:53: error: '_GP_INOUTSEL' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:2: warning: initialization makes integer from pointer without a cast [enabled by default]
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:2: warning: (near initialization for '(anonymous)[0]') [enabled by default]
...
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:1: error: macro "_GP_INDT" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:47: error: '_GP_INDT' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:2: warning: initialization makes integer from pointer without a cast [enabled by default]
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:2: warning: (near initialization for '(anonymous)[0]') [enabled by default]
...
Add the missing "cfg" macro parameters to the sh7734-specific
_GP_DATA(), _GP_INOUTSEL(), and _GP_INDT() macros to fix this.
Fixes: 22768fc60a ("pinctrl: sh-pfc: Add macros defining GP ports with config flags")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
There's currently two places where the gma500 fault handler relies
upon dev->struct_mutex:
- To protect r->mappping
- To make sure vm_insert_pfn isn't called concurrently (in which case
the 2nd thread would get an error code).
Everything else (specifically psb_gtt_pin) is already protected by
some other locks. Hence just create a new driver-private mmap_mutex
just for this function.
With this gma500 is complete dev->struct_mutex free!
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-21-git-send-email-daniel.vetter@ffwll.ch
Simply forgotten about this when I was doing my general cleansing of
simple gem mmap offset functions. There's nothing but core functions
called here, and they all have their own protection already.
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-20-git-send-email-daniel.vetter@ffwll.ch
This is init/teardown code, locking is just to appease locking checks.
And since gem create/free doesn't need this any more there's really no
reason for grabbing dev->struct_mutex.
Again important to switch obj_unref to _unlocked variants.
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-19-git-send-email-daniel.vetter@ffwll.ch
It's either init code or already protected by other means. Note
that psb_gtt_pin/unpin has it's own lock, and that's really the
only piece of driver private state - all the modeset state is
protected with modeset locks already.
The only important bit is to switch all gem_obj_unref calls to the
_unlocked variant.
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-18-git-send-email-daniel.vetter@ffwll.ch
This is called without dev->struct_mutex held, we need to use the
_unlocked variant.
Never caught in the wild since you'd need an evil userspace which
races a gem_close ioctl call with the in-progress open.
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448271183-20523-17-git-send-email-daniel.vetter@ffwll.ch
We have relied upon the sole caller (wait_ioctl) validating the timeout
argument. However, when waiting for multiple requests I forgot to ensure
that the timeout was still positive on the later requests. This is more
simply done inside __i915_wait_request.
Fixes regression introduced in
commit b47161858b
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon Apr 27 13:41:17 2015 +0100
drm/i915: Implement inter-engine read-read optimisations
The impact of the regression is 1 jiffie for each extra active ring for
a wait_ioctl with a timeout -- I don't think anyone has noticed.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwerlin@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448544702-5594-1-git-send-email-chris@chris-wilson.co.uk
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Rather than using drm_match_cea_mode() to see if the EDID detailed
timings are supposed to represent one of the CEA/HDMI modes, add a
special version of that function that takes in an explicit clock
tolerance value (in kHz). When looking at the detailed timings specify
the tolerance as 5kHz due to the 10kHz clock resolution limit inherent
in detailed timings.
drm_match_cea_mode() uses the normal KHZ2PICOS() matching of clocks,
which only allows smaller errors for lower clocks (eg. for 25200 it
won't allow any error) and a bigger error for higher clocks (eg. for
297000 it actually matches 296913-297000). So it doesn't really match
what we want for the fixup. Using the explicit +-5kHz is much better
for this use case.
Not sure if we should change the normal mode matching to also use
something else besides KHZ2PICOS() since it allows a different
proportion of error depending on the clock. I believe VESA CVT
allows a maximum deviation of .5%, so using that for normal mode
matching might be a good idea?
Cc: Adam Jackson <ajax@redhat.com>
Tested-by: nathan.d.ciobanu@linux.intel.com
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92217
Fixes: fa3a7340ea ("drm/edid: Fix up clock for CEA/HDMI modes specified via detailed timings")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The numbers aren't always linear, just like in the real world.
Correct to the right numbers stated in the datasheet (although we
can't trust the datasheet as well).
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The mpt2sas driver was recently folded into mpt3sas to reduce code
duplication.
To avoid problems for people that only have CONFIG_SCSI_MPT2SAS in their
.config we introduce a dummy option that will select MPT3SAS if MPT2SAS
was previously enabled.
This is a temporary measure and we will deprecate this config option in
4.6.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: James Bottomley <James.Bottomley@hansenpartnership.com>
CC: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Avoid the sticky preferred mode bit by using the no-merge version of the
function (this allows gnome-shell to resize to lower resolutions than
the default resolution)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
The first is something that's been there since its creation. If a reader
reads a page out of the ring buffer before there's any events on it, it
can get an out of date timestamp for that event. It may be off by a few
microseconds, more if the first event gets discarded. The fix was to
only update the reader time stamp when it actually sees an event on
the page, instead of just reading the timestamp from the page even if
it has no events on it. That timestamp is still volatile until an event
is present.
The second bug is more recent. Instead of passing around parameters
a descriptor was made and the parameters are passed via a single
descriptor. This simplified the code a bit. But there was one place that
expected the parameter to be passed by value not reference (which a
descriptor now does). And it added to the length of the event, which
may be ignored later, but the length should not have been increased.
The only real problem with this bug is that it may allocate more than
was needed for the event.
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Merge tag 'trace-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"I found two minor bugs while doing development on the ring buffer
code.
The first is something that's been there since its creation. If a
reader reads a page out of the ring buffer before there's any events
on it, it can get an out of date timestamp for that event. It may be
off by a few microseconds, more if the first event gets discarded.
The fix was to only update the reader time stamp when it actually sees
an event on the page, instead of just reading the timestamp from the
page even if it has no events on it. That timestamp is still volatile
until an event is present.
The second bug is more recent. Instead of passing around parameters a
descriptor was made and the parameters are passed via a single
descriptor. This simplified the code a bit. But there was one place
that expected the parameter to be passed by value not reference (which
a descriptor now does). And it added to the length of the event,
which may be ignored later, but the length should not have been
increased. The only real problem with this bug is that it may
allocate more than was needed for the event"
* tag 'trace-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ring-buffer: Put back the length if crossed page with add_timestamp
ring-buffer: Update read stamp with first real commit on page
When support for _FIT was added, the code presumed that the data
returned by the _FIT method is identical to the NFIT table, which
starts with an acpi_table_header. However, the _FIT is defined
to return a data in the format of a series of NFIT type structure
entries and as a method, has an acpi_object header rather tahn
an acpi_table_header.
To address the differences, explicitly save the acpi_table_header
from the NFIT, since it is accessible through /sys, and change
the nfit pointer in the acpi_desc structure to point to the
table entries rather than the headers.
Reported-by: Jeff Moyer (jmoyer@redhat.com>
Signed-off-by: Linda Knippers <linda.knippers@hpe.com>
Acked-by: Vishal Verma <vishal.l.verma@intel.com>
[vishal: fix up unit test for new header assumptions]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Missed previously due to a lack of test coverage on a platform that
provided an valid response to _FIT.
Signed-off-by: Linda Knippers <linda.knippers@hpe.com>
Acked-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The size of NFIT tables don't necessarily match the size of the
data structures that we use for them. For example, the NVDIMM
Control Region Structure table is shorter for a device with
no block control windows than for a device with block control windows.
Other tables, such as Flush Hint Address Structure and the Interleave
Structure are variable length by definition.
Account for the size difference when comparing table entries by
using the actual table size from the table header if it's less
than the structure size.
Signed-off-by: Linda Knippers <linda.knippers@hpe.com>
Acked-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
drm-intel-next-2015-11-20-rebased:
4 weeks because of my vacation, so a bit more:
- final bits of the typesafe register mmio functions (Ville)
- power domain fix for hdmi detection (Imre)
- tons of fixes and improvements to the psr code (Rodrigo)
- refactoring of the dp detection code (Ander)
- complete rework of the dmc loader and dc5/dc6 handling (Imre, Patrik and
others)
- dp compliance improvements from Shubhangi Shrivastava
- stop_machine hack from Chris to fix corruptions when updating GTT ptes on bsw
- lots of fifo underrun fixes from Ville
- big pile of fbc fixes and improvements from Paulo
- fix fbdev failures paths (Tvrtko and Lukas Wunner)
- dp link training refactoring (Ander)
- interruptible prepare_plane for atomic (Maarten)
- basic kabylake support (Deepak&Rodrigo)
- don't leak ringspace on resets (Chris)
drm-intel-next-2015-10-23:
- 2nd attempt at atomic watermarks from Matt, but just prep for now
- fixes all over
* tag 'drm-intel-next-2015-11-20-merged' of git://anongit.freedesktop.org/drm-intel: (209 commits)
drm/i915: Update DRIVER_DATE to 20151120
drm/i915: take a power domain reference while checking the HDMI live status
drm/i915: take a power domain ref only when needed during HDMI detect
drm/i915: Tear down fbdev if initialization fails
async: export current_is_async()
Revert "drm/i915: Initialize HWS page address after GPU reset"
drm/i915: Fix oops caused by fbdev initialization failure
drm/i915: Fix i915_ggtt_view_equal to handle rotation correctly
drm/i915: Stuff rotation params into view union
drm/i915: Drop return value from intel_fill_fb_ggtt_view
drm/i915 : Fix to remove unnecsessary checks in postclose function.
drm/i915: add MISSING_CASE to a few port/aux power domain helpers
drm/i915/ddi: fix intel_display_port_aux_power_domain() after HDMI detect
drm/i915: Remove platform specific *_dp_detect() functions
drm/i915: Don't do edp panel detection in g4x_dp_detect()
drm/i915: Send TP1 TP2/3 even when panel claims no NO_TRAIN_ON_EXIT.
drm/i915: PSR: Don't Skip aux handshake on DP_PSR_NO_TRAIN_ON_EXIT.
drm/i915: Reduce PSR re-activation time for VLV/CHV.
drm/i915: Delay first PSR activation.
drm/i915: Type safe register read/write
...
Here's the first drm-misc pull, with really mostly misc stuff all over.
Somewhat invasive is only Ville's change to mark the arg struct for
fb_create const - that might conflict with a new driver pull. So better to
get in fast.
* tag 'topic/drm-misc-2015-11-26' of git://anongit.freedesktop.org/drm-intel:
drm/mm: use list_next_entry
drm/i915: fix potential dangling else problems in for_each_ macros
drm: fix potential dangling else problems in for_each_ macros
drm/sysfs: Send out uevent when connector->force changes
drm/atomic: Small documentation fix.
drm/mm: rewrite drm_mm_for_each_hole
drm/sysfs: Grab lock for edid/modes_show
drm: Print the src/dst/clip rectangles in error in drm_plane_helper
drm: Add "prefix" parameter to drm_rect_debug_print()
drm: Keep coordinates in the typical x, y, w, h order instead of x, y, h, w
drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create()
drm: modes: replace simple_strtoul by kstrtouint
drm: Describe the Rotation property bits.
drm: Remove unused fbdev_list members
GPU-DRM: Delete unnecessary checks before drm_property_unreference_blob()
drm/dp: add eDP DPCD backlight control bit definitions
drm/tegra: Remove local fbdev emulation Kconfig option
drm/imx: Remove local fbdev emulation Kconfig option
drm/gem: Update/Polish docs
drm: Update GEM refcounting docs
few i915 fixes.
* tag 'drm-intel-fixes-2015-11-30' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Don't override output type for DDI HDMI
drm/i915: Don't compare has_drrs strictly in pipe config
drm/i915: Mark uneven memory banks on gen4 desktop as unknown swizzling
Hi,
For a brief moment I was tricked into thinking that:
In-kernel debugger (EXPERIMENTAL) (ACPI_DEBUGGER) [N/y/?] (NEW)
might be something useful. Better describe the feature to reduce
such confusion.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Dmitry provided a syzkaller (http://github.com/google/syzkaller)
generated program that triggers the WARNING at
net/ipv4/tcp.c:1729 in tcp_recvmsg() :
WARN_ON(tp->copied_seq != tp->rcv_nxt &&
!(flags & (MSG_PEEK | MSG_TRUNC)));
His program is specifically attempting a Cross SYN TCP exchange,
that we support (for the pleasure of hackers ?), but it looks we
lack proper tcp->copied_seq initialization.
Thanks again Dmitry for your report and testings.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The gianfar driver has recently been enabled on arm64 but fails to build
since it check the return value of platform_get_irq() against NO_IRQ. Fix
this by instead checking for a negative error code.
Even on ARM where this code was previously being built this check was
incorrect since platform_get_irq() returns a negative error code which
may not be exactly the (unsigned int)(-1) that NO_IRQ is defined to be.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This driver can be built on arm64 but relies on NO_IRQ to check the return
value of irq_of_parse_and_map() which fails to build on arm64 because the
architecture does not provide a NO_IRQ. Fix this to correctly check the
return value of irq_of_parse_and_map().
Even on ARM systems where the driver was previously used the check was
broken since on ARM NO_IRQ is -1 but irq_of_parse_and_map() returns 0 on
error.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
sendpage did not care about credentials at all. This could lead to
situations in which because of fd passing between processes we could
append data to skbs with different scm data. It is illegal to splice those
skbs together. Instead we have to allocate a new skb and if requested
fill out the scm details.
Fixes: 869e7c6248 ("net: af_unix: implement stream sendpage support")
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When bio has only one physical segment, we should set bio's
bi_seg_front_size as the real(final) size of the single segment.
Fixes: 02e707424c2ea(blk-merge: fix blk_bio_segment_split)
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Giuseppe Cavallaro says:
====================
Spare stmmac fixes
These are some fixes for the stmmac d.d. tested on STi platforms.
They are for some part of the PM, STi glue and rx path when test
Jumbo.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The receive skb buffers can be preallocated when the link is opened
according to mtu size.
While testing on a network environment with not standard MTU (e.g. 3000),
a panic occurred if an incoming packet had a length greater than rx skb
buffer size. This is because the HW is programmed to copy, from the DMA,
an Jumbo frame and the Sw must check if the allocated buffer is enough to
store the frame.
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When stmmac_mdio_reset, was called from stmmac_resume, it was not
resetting the PHY due to which MAC was not getting reset properly and
hence ethernet interface not was resumed properly.
The issue was currently only reproducible on stih301-b2204.
Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of the st,tx-retime-src is missing from device-tree
(it's an optional field) the driver will invoke the strcasecmp to check
which clock has been selected and this is a bug; the else condition
is needed.
In the dwmac_setup, the "rs" variable, passed to the strcasecmp, was not
initialized and the compiler, depending on the options adopted, could
take it in some different part of the stack generating the hang in such
configuration.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is to fix the csr clock in case of 300MHz is provided.
Reported-by: Kent Borg <Kent.Borg@csr.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When resume the HW is re-configured but some settings can be lost.
For example, the MAC Address_X High/Low Registers used for VLAN tagging..
So, while resuming, the set_filter callback needs to be invoked to
re-program perfect and hash-table registers.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We use the reservation object of the page directory for the page tables as
well, because of this the page directory should be freed last. Ensure that
by keeping a reference from the page tables to the directory.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
That got messed up while porting it from Radeon.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Heiko Stuebner