Pull i2c fixes from Wolfram Sang:
"Bugfixes for the i2c subsystem.
Except for a few one-liners, there is mainly one revert because of an
overlooked dependency. Since there is no linux-next at the moment, I
did some extra testing, and all was fine for me."
* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
i2c: mxs: Handle i2c DMA failure properly
i2c: s3c2410: Fix code to free gpios
i2c: omap: ensure writes to dev->buf_len are ordered
Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints"
i2c: at91: fix SMBus quick command
The highlight of this update is the fixes for ASoC kirkwood by Russell.
In addition to that, a couple of regression fixes for HD-audio due to
the runtime PM support on 3.7, and other driver-specific regression
fixes like USB MIDI on non-standard USB audio drivers.
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Merge tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The highlight of this update is the fixes for ASoC kirkwood by
Russell. In addition to that, a couple of regression fixes for
HD-audio due to the runtime PM support on 3.7, and other driver-
specific regression fixes like USB MIDI on non-standard USB audio
drivers."
* tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: snd-usb: properly initialize the sync endpoint
ALSA: hda - Cirrus: Correctly clear line_out_pins when moving to speaker
ALSA: hda - Add support for Realtek ALC292
ASoC: kirkwood-i2s: more pause-mode fixes
ASoC: kirkwood-i2s: fix DMA underruns
ASoC: kirkwood-i2s: fix DCO lock detection
ASoC: kirkwood-dma: don't ignore other irq causes on error
ASoC: kirkwood-dma: fix use of virt_to_phys()
ALSA: hda - Limit runtime PM support only to known Intel chips
ALSA: hda - Fix recursive suspend/resume call
ALSA: ua101, usx2y: fix broken MIDI output
ASoC: arizona: Fix typo - Swap value in 48k_rates[] and 44k1_rates[]
ASoC: bells: Fix up git patch application failure
ASoC: cs4271: free allocated GPIO
Pull networkign fixes from David Miller:
"Networking bug fixes, Cacio e Pepe edition:
1) BNX2X accidently accesses chip rev specific registers without an
appropriate guard, fix from Ariel Elior.
2) When we removed the routing cache, we set ip_rt_max_size to ~0 just
to keep reporting a value to userspace via sysfs. But the ipv4
IPSEC layer was using this to tune itself which is completely bogus
to now do. Fix from Steffen Klassert.
3) Missing initialization in netfilter ipset code from Jozsef
Kadlecsik.
4) Check CTA_TIMEOUT_NAME length properly in netfilter cttimeout code,
fix from Florian Westphal.
5) After removing the routing cache, we inadvertantly are caching
multicast routes that end up looping back locally, we cannot do
that legitimately any more. Fix from Julian Anastasov.
6) Revert a race fix for 8139cp qemu/kvm that doesn't actually work
properly on real hardware. From Francois Romieu.
7) Fixup errors in example command lines in VXLAN device docs."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
bnx2x: remove redundant warning log
vxlan: fix command usage in its doc
8139cp: revert "set ring address before enabling receiver"
ipv4: do not cache looped multicasts
netfilter: cttimeout: fix buffer overflow
netfilter: ipset: Fix range bug in hash:ip,port,net
xfrm: Fix the gc threshold value for ipv4
Pull sparc fix from David Miller:
"Bug fix from Al Viro"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: not any error from do_sigaltstack() should fail rt_sigreturn()
I missed one pull request from Samsung with one fix in the previous
batch. Here it is -- a dma driver fix for an early version of silicon
that they still support.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull one more ARM SoC fix from Olof Johansson:
"I missed one pull request from Samsung with one fix in the previous
batch. Here it is -- a dma driver fix for an early version of silicon
that they still support."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: EXYNOS: PL330 MDMA1 fix for revision 0 of Exynos4210 SOC
dev_pm_qos_add_request() can return 0, 1, or a negative error code,
therefore the correct error test is "if (error < 0)." Checking just for
non-zero return code leads to erroneous setting of the req->dev pointer
to NULL, which then leads to a repeated call to
dev_pm_qos_add_ancestor_request() in st1232_ts_irq_handler(). This in turn
leads to an Oops, when the I2C host adapter is unloaded and reloaded again
because of the inconsistent state of its QoS request list.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
fix bug where a register which was only meant to be read in 578xx/57712
devices causes a bogus error message to be logged when read from other
devices.
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some commands don't work in its example doc. The patch will fix it.
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch reverts b01af4579e.
The original patch was tested with emulated hardware. Real
hardware chokes.
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=47041
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since it should be working a little bit better now.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Since 4.4 GCC on MIPS no longer recognizes the "h" constraint,
leading to this build failure:
CC lib/mpi/generic_mpih-mul1.o
lib/mpi/generic_mpih-mul1.c: In function 'mpihelp_mul_1':
lib/mpi/generic_mpih-mul1.c:50:3: error: impossible constraint in 'asm'
This patch updates MPI with the latest umul_ppm implementations for MIPS.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Cc: James Morris <jmorris@namei.org>
Patchwork: https://patchwork.linux-mips.org/patch/4612/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
A recent patch changed some irq routines from inlines to functions.
These routines are called by the tracer code. Now that they're functions,
if they are compiled for function tracing they will call the tracer
and crash the system due to infinite recursion. The fix disables
tracing in these functions by using "notrace" in the function
definition.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Reviewed-by: David Daney <david.daney@cavium.com>
Pathchwork: https://patchwork.linux-mips.org/patch/4564/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Without this, we may end up with something like this in /proc/iomem:
01100000-014fffff : System RAM
01100000-013bf48f : Kernel code
013bf490-0149e01f : Kernel data
01500000-0c0fffff : System RAM
but the two System RAM ranges should be one single range. This particular
case will result in kexec failure on Octeon systems if the kernel being
loaded by kexec is bigger than the already running kernel.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
After we've done __elv_add_request() and __blk_run_queue() in
blk_execute_rq_nowait(), the request might finish and be freed
immediately. Therefore checking if the type is REQ_TYPE_PM_RESUME
isn't safe afterwards, because if it isn't, rq might be gone.
Instead, check beforehand and stash the result in a temporary.
This fixes crashes in blk_execute_rq_nowait() I get occasionally when
running with lots of memory debugging options enabled -- I think this
race is usually harmless because the window for rq to be reallocated
is so small.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Hi Jens,
Another tiny patch.
Removed __packed before the struct smart_attr and added __packed at end of
the structure to fix padding issue.
Signed-off-by: Selvan Mani <smani@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Calling the request handler directly on a plugged queue defeats
the performance improvements provided by the plugging mechanism.
Use the __blk_run_queue function instead of calling the request
handler directly, so that we don't interfere with the block
layer's ability to plug the queue.
Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The dereference to port should be moved below the NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If we're building a 32-bit kernel and CONFIG_LBADF isn't set,
sector_t is 32-bits wide. The shifts by 32 and 40 are thus
larger than we support.
Cast the sector offset to a u64 to avoid these warnings.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Previous commit use value 3 for erasemode mask.
Changing the mask to correct value to 2
Signed-off-by: Selvan Mani <smani@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Earlier lba address was assigned directly to lba_low and lba_low_ex,
which would result in a different number (bytes reversed) in
big-endian systems. Now assigning lba address byte-by-byte to fis.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Selvan Mani <smani@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The mtip driver lifted this code from elsewhere and then added a special
handling check for SEC_ERASE_UNIT. If the caller tries to do a security
erase but passes no output data for the command then outbuf is not
allocated and the driver duly explodes.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Selvan Mani <smani@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Request based dm attempts to re-run the request queue off the
request completion path. If used with a driver that potentially does
end_io from its request_fn, we could deadlock trying to recurse
back into request dispatch. Fix this by punting the request queue
run to kblockd.
Tested to fix a quickly reproducible deadlock in such a scenario.
Cc: stable@kernel.org
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pull input updates from Dmitry Torokhov:
"This fixes recent regression where /dev/input/mice got assigned wrong
device node which messed up setups with static /dev, and a regression
in ads7846 GPIO debounce setup."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
ARM - OMAP: ads7846: fix pendown debounce setting
Input: ads7846 - enable pendown GPIO debounce time setting
Input: mousedev - move /dev/input/mice to the correct minor
Input: MT - document new 'flags' argument of input_mt_init_slots()
From Kukjin Kim:
Here is Samsung fixes for v3.7 and it is for fixing of mdma1 address
for exynos4210 rev0 SoC.
* 'v3.7-samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: PL330 MDMA1 fix for revision 0 of Exynos4210 SOC
Signed-off-by: Olof Johansson <olof@lixom.net>
The new EEH code introduced a small regression, if the EEH PEs
are missin (which happens currently in qemu for example), it
will deref a NULL pointer in the MSI code.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Properly terminate the DMA transfer in case the DMA PIO transfer
or setup fails for any reason.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: resolve conflict around the call to intel_crtc_mode_get. And
add the missing NULL check Chris spotted while at it.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Starting from 3.6 we cache output routes for
multicasts only when using route to 224/4. For local receivers
we can set RTCF_LOCAL flag depending on the membership but
in such case we use maddr and saddr which are not caching
keys as before. Additionally, we can not use same place to
cache routes that differ in RTCF_LOCAL flag value.
Fix it by caching only RTCF_MULTICAST entries
without RTCF_LOCAL (send-only, no loopback). As a side effect,
we avoid unneeded lookup for fnhe when not caching because
multicasts are not redirected and they do not learn PMTU.
Thanks to Maxime Bizon for showing the caching
problems in __mkroute_output for 3.6 kernels: different
RTCF_LOCAL flag in cache can lead to wrong ip_mc_output or
ip_output call and the visible problem is that traffic can
not reach local receivers via loopback.
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Tested-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the recorded panel fixed-mode to populate the get_modes() request in
the absence of an EDID.
Fixes regression from
commit 9cd300e038
Author: Jani Nikula <jani.nikula@intel.com>
Date: Fri Oct 19 14:51:52 2012 +0300
drm/i915: Move cached EDID to intel_connector
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Drop the retval-changing hunk, as suggested by Jani in his
review and acked by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
commit 500a8cc466
Author: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Wed Jan 13 11:19:52 2010 +0800
drm/i915: parse eDP panel color depth from VBT block
originally introduced parsing bpp for eDP from VBT, with a default of 18
bpp if the eDP BIOS data block is not present. Turns out that default seems
to break the Macbook Pro with retina display, as noted in
commit 4344b813f1
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Aug 10 11:10:20 2012 +0200
drm/i915: ignore eDP bpc settings from vbt
Since we can't ignore bpc settings from VBT completely after all, get rid
of the default. Do not clamp eDP to 18 bpp by default if the eDP BDB is
missing from VBT.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Henrik Rydberg <rydberg@euromail.se>
[danvet: paste in the updated commit message from irc.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Pablo Neira Ayuso says:
====================
The following patchset contains two Netfilter fixes:
* Fix buffer overflow in the name of the timeout policy object
in the cttimeout infrastructure, from Florian Westphal.
* Fix a bug in the hash set in case that IP ranges are
specified, from Jozsef Kadlecsik.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Steffen Klassert says:
====================
This pull request is intended for 3.7 and contains a single patch to
fix the IPsec gc threshold value for ipv4.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeffrey Barish reported an obvious bug in the pcm part of the usb-audio
driver which causes the code to not initialize the sync endpoint from
configure_endpoint().
Reported-by: Jeffrey Barish <jeff_barish@earthlink.net>
Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: stable@kernel.org [3.5+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
A few more fixes for final 3.7. Two dealing with pinmux setup on OMAP, and
one dealing with TV output on DaVinci. And one small MAINTAINER update.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A few more fixes for final 3.7. Two dealing with pinmux setup on
OMAP, and one dealing with TV output on DaVinci. And one small
MAINTAINER update."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: davinci: dm644x: fix out range signal for ED
ARM: OMAP4: TWL: mux sys_drm_msecure as output for PMIC
ARM: OMAP3: igep0020: Set WIFI/BT GPIO pins in correct mux mode
ARM: OMAP: Add maintainer entry for IGEP machines
This is two bug fixes: one fixes a loophole where rt_sigprocmask() with the
wrong values panics the box (Denial of Service) and the other fixes an
aliasing problem with get_shared_area() which could cause data corruption.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6
Pull PARISC fixes from James Bottomley:
"This is two bug fixes: one fixes a loophole where rt_sigprocmask()
with the wrong values panics the box (Denial of Service) and the other
fixes an aliasing problem with get_shared_area() which could cause
data corruption.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>"
* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
[PARISC] fix user-triggerable panic on parisc
[PARISC] fix virtual aliasing issue in get_shared_area()
This is a set of four bug fixes. The isci one is an obvious thinko (using
request buffer instead of response buffer) which causes a command to fail.
The three others are DIF/DIX updates which are required because they're part
of a series of ten patches, the other seven of which went into the block layer
during the merge window meaning our current DIF/DIX implementation is broken
without these three.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of four bug fixes.
The isci one is an obvious thinko (using request buffer instead of
response buffer) which causes a command to fail.
The three others are DIF/DIX updates which are required because
they're part of a series of ten patches, the other seven of which went
into the block layer during the merge window meaning our current
DIF/DIX implementation is broken without these three.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] sd: Implement support for WRITE SAME
[SCSI] sd: Permit merged discard requests
[SCSI] Add a report opcode helper
[SCSI] isci: copy fis 0x34 response into proper buffer
Pull drm fixes from Dave Airlie.
Small fixes for (mostly Nouveau, some radeon) regressions.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: use the correct fence implementation for nv50
drm/radeon: add new SI pci id
radeon: add AGPMode 1 quirk for RV250
drm/radeon: properly track the crtc not_enabled case evergreen_mc_stop()
drm/nouveau/bios: fix DCB v1.5 parsing
drm/nouveau: add missing pll_calc calls
drm/nouveau: fix crash with noaccel=1
drm/nv40: allocate ctxprog with kmalloc
drm/nvc0/disp: fix thinko in vblank regression fix..
Do not fail if dpll4_m4_ck is missing. The clock is not there on omap24xx,
so this should not be a hard error.
The patch retains the functionality before the commit 185bae10 (OMAPDSS:
DSS: Cleanup cpu_is_xxxx checks).
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Since the base fields in both struct intel_connector and struct
intel_sdvo_connector are at the beginning of the enclosing struct, the
pointers are essentially the same, but there is no requirement or guarantee
that this is always the case. Kfree the enclosing intel_sdvo_connector
pointer that was originally allocated, not the enclosed drm_connector, in
case someone ever rearranges the structs.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
int sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, compat_sigset_t __user *oset,
unsigned int sigsetsize)
{
sigset_t old_set, new_set;
int ret;
if (set && get_sigset32(set, &new_set, sigsetsize))
...
static int
get_sigset32(compat_sigset_t __user *up, sigset_t *set, size_t sz)
{
compat_sigset_t s;
int r;
if (sz != sizeof *set) panic("put_sigset32()");
In other words, rt_sigprocmask(69, (void *)69, 69) done by 32bit process
will promptly panic the box.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Check overlay_ops is not NULL as checked in the previous 'if' condition.
Fixes the following smatch error:
drivers/gpu/drm/exynos/exynos_drm_encoder.c:509 exynos_drm_encoder_plane_disable()
error: we previously assumed 'overlay_ops' could be null (see line 499)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Fixes the following sparse warnings:
drivers/gpu/drm/exynos/exynos_drm_fimd.c:65:25: warning:
symbol 'exynos4_fimd_driver_data' was not declared. Should it be static?
drivers/gpu/drm/exynos/exynos_drm_fimd.c:69:25: warning:
symbol 'exynos5_fimd_driver_data' was not declared. Should it be static?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Chagelog v2:
Move encoder's dpms updating into exynos_drm_encoder_commit
function because when crtc's dpms is updated, encoder's dpms
is updated also. This would induce the issue that encoder
isn't disabled after crtc is disabled.
Changelog v1:
This patch fixes a issue that overlay data aren't applied
to real hardware when dpms off goes to on after setcrtc
was requested like below,
dpms off -> setcrtc -> dpms off -> dpms on
For this, it makes encoder's dpms to be updated when
setcrtc is requested.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
plane->fb will be set to new fb after update_plane callback is called
by drm_mode_set_plane()
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
With iommu, buffer->dma_addr has device addres so this patch
fixes for physical address to be set to fix.smem_start always.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
When a write to a replacement device completes, we carefully
and correctly found the rdev that the write actually went to
and the blithely called rdev_dec_pending on the primary rdev,
even if this write was to the replacement.
This means that any writes to an array while a replacement
was ongoing would cause the nr_pending count for the primary
device to go negative, so it could never be removed.
This bug has been present since replacement was introduced in
3.3, so it is suitable for any -stable kernel since then.
Reported-by: "George Spelvin" <linux@horizon.com>
Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
When a replacement operation completes there is a small window
when the original device is marked 'faulty' and the replacement
still looks like a replacement. The faulty should be removed and
the replacement moved in place very quickly, bit it isn't instant.
So the code write out to the array must handle the possibility that
the only working device for some slot in the replacement - but it
doesn't. If the primary device is faulty it just gives up. This
can lead to corruption.
So make the code more robust: if either the primary or the
replacement is present and working, write to them. Only when
neither are present do we give up.
This bug has been present since replacement was introduced in
3.3, so it is suitable for any -stable kernel since then.
Reported-by: "George Spelvin" <linux@horizon.com>
Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
Alex writes:
A couple more small fixes for 3.7:
- another evergreen_mc fix
- add an AGP quirk for an old RV250
- new pci id.
* 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: add new SI pci id
radeon: add AGPMode 1 quirk for RV250
drm/radeon: properly track the crtc not_enabled case evergreen_mc_stop()
nouveau: one more regression fix.
* 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau: use the correct fence implementation for nv50
Linus Torvalds