| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull NFS client bugfixes from Trond Myklebust:
- Fix a bunch of deadlock situations:
* State recovery can deadlock if we fail to release sequence ids
before scheduling the recovery thread.
* Calling deactivate_super() from an RPC workqueue thread can
deadlock because of the call to rpc_shutdown_client.
- Display the device name correctly in /proc/*/mounts
- Fix a number of incorrect error return values:
* When NFSv3 mounts fail due to a timeout.
* On NFSv4.1 backchannel setup failure
* On NFSv4 open access checks
- pnfs_find_alloc_layout() must check the layout pointer for NULL
- Fix a regression in the legacy DNS resolved
* tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS4: nfs4_opendata_access should return errno
NFSv4: Initialise the NFSv4.1 slot table highest_used_slotid correctly
SUNRPC: return proper errno from backchannel_rqst
NFS: add nfs_sb_deactive_async to avoid deadlock
nfs: Show original device name verbatim in /proc/*/mount{s,info}
nfsv3: Make v3 mounts fail with ETIMEDOUTs instead EIO on mountd timeouts
nfs: Check whether a layout pointer is NULL before free it
NFS: fix bug in legacy DNS resolver.
NFSv4: nfs4_locku_done must release the sequence id
NFSv4.1: We must release the sequence id when we fail to get a session slot
NFS: Wait for session recovery to finish before returning
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Return errno - not an NFS4ERR_. This worked because NFS4ERR_ACCESS == EACCES.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The one and only caller (in fs/nfs/nfs4client.c) uses the result
as an errno and would have interpreted an error as EPERM.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Use nfs_sb_deactive_async instead of nfs_sb_deactive when in a workqueue
context. This avoids a deadlock where rpc_shutdown_client loops forever
in a workqueue kworker context, trying to kill all RPC tasks associated with
the client, while one or more of these tasks have already been assigned to the
same kworker (and will never run rpc_exit_task).
This approach is needed because RPC tasks that have already been assigned
to a kworker by queue_work cannot be canceled, as explained in the comment
for workqueue.c:insert_wq_barrier.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
[Trond: add module_get/put.]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Since commit c7f404b ('vfs: new superblock methods to override
/proc/*/mount{s,info}'), nfs_path() is used to generate the mounted
device name reported back to userland.
nfs_path() always generates a trailing slash when the given dentry is
the root of an NFS mount, but userland may expect the original device
name to be returned verbatim (as it used to be). Make this
canonicalisation optional and change the callers accordingly.
[jrnieder@gmail.com: use flag instead of bool argument]
Reported-and-tested-by: Chris Hiestand <chiestand@salk.edu>
Reference: http://bugs.debian.org/669314
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: <stable@vger.kernel.org> # v2.6.39+
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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In very busy v3 environment, rpc.mountd can respond to the NULL
procedure but not the MNT procedure in a timely manner causing
the MNT procedure to time out. The problem is the mount system
call returns EIO which causes the mount to fail, instead of
ETIMEDOUT, which would cause the mount to be retried.
This patch sets the RPC_TASK_SOFT|RPC_TASK_TIMEOUT flags to
the rpc_call_sync() call in nfs_mount() which causes
ETIMEDOUT to be returned on timed out connections.
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
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The new layout pointer in pnfs_find_alloc_layout() may be NULL because of
out of memory. we must do some check work, otherwise pnfs_free_layout_hdr()
will go wrong because it can not deal with a NULL pointer.
Signed-off-by: Yanchuan Nian <ycnian@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The DNS resolver's use of the sunrpc cache involves a 'ttl' number
(relative) rather that a timeout (absolute). This confused me when
I wrote
commit c5b29f885afe890f953f7f23424045cdad31d3e4
"sunrpc: use seconds since boot in expiry cache"
and I managed to break it. The effect is that any TTL is interpreted
as 0, and nothing useful gets into the cache.
This patch removes the use of get_expiry() - which really expects an
expiry time - and uses get_uint() instead, treating the int correctly
as a ttl.
This fixes a regression that has been present since 2.6.37, causing
certain NFS accesses in certain environments to incorrectly fail.
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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If the state recovery machinery is triggered by the call to
nfs4_async_handle_error() then we can deadlock.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
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If we do not release the sequence id in cases where we fail to get a
session slot, then we can deadlock if we hit a recovery scenario.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
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Currently, we will schedule session recovery and then return to the
caller of nfs4_handle_exception. This works for most cases, but causes
a hang on the following test case:
Client Server
------ ------
Open file over NFS v4.1
Write to file
Expire client
Try to lock file
The server will return NFS4ERR_BADSESSION, prompting the client to
schedule recovery. However, the client will continue placing lock
attempts and the open recovery never seems to be scheduled. The
simplest solution is to wait for session recovery to run before retrying
the lock.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management & ACPI update from Zhang Rui,
Ho humm. Normally these things go through Len. But it's just three
small fixes, I guess I can pull directly too.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
exynos4_tmu_driver_ids should be exynos_tmu_driver_ids.
ACPI video: Ignore errors after _DOD evaluation.
thermal: solve compilation errors in rcar_thermal
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Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Reviewed-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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There are systems where video module known to work fine regardless
of broken _DOD and ignoring returned value here doesn't cause
any issues later. This should fix brightness controls on some laptops.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861
Signed-off-by: Igor Murzov <e-mail@date.by>
Reviewed-by: Sergey V <sftp.mtuci@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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following were the errors reported
drivers/thermal/rcar_thermal.c: In function ‘rcar_thermal_probe’:
drivers/thermal/rcar_thermal.c:214:10: warning: passing argument 3 of ‘thermal_zone_device_register’ makes integer from pointer without a cast [enabled by default]
include/linux/thermal.h:166:29: note: expected ‘int’ but argument is of type ‘struct rcar_thermal_priv *’
drivers/thermal/rcar_thermal.c:214:10: error: too few arguments to function ‘thermal_zone_device_register’
include/linux/thermal.h:166:29: note: declared here
make[1]: *** [drivers/thermal/rcar_thermal.o] Error 1
make: *** [drivers/thermal/rcar_thermal.o] Error 2
with gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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git://git.pengutronix.de/git/wsa/linux
Pull i2c embedded fixes from Wolfram Sang:
"Two patches are usual stuff.
The bigger patch is needed to correct a wrong decision made in this
merge window. We hoped to get the PIOQUEUE mode in the mxs driver
working with DMA, but it turned out to be too broken (leading to data
loss), so we now think it is best to remove it entirely and work only
with DMA now. The patch should be in 3.7. IMO, so users never get
the chance to use both modes in parallel."
* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
i2c: tegra: set irq name as device name
i2c-nomadik: Fixup clock handling
i2c: mxs: remove broken PIOQUEUE support
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When watching the irqs name of tegra i2c, all instances
irq name shows as tegra_i2c.
Passing the device name properly to have the irq names with
instance like tegra-i2c.0, tegra-i2c.1 etc.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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Make sure to clk_prepare as well as clk_enable.
Signed-off-by: Philippe Begnic <philippe.begnic@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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This I2C master can do DMA and PIOQUEUE (PIO with FIFO). Originally,
only PIOQUEUE was supported and it had issues, then DMA support was added
this cycle. The original intention was to keep PIOQUEUE since it has
less overhead what is nice for small transfers. However, runtime
switching between PIOQEUE and DMA depending on the transfer size never
worked despite a lot of trying. Since PIOQUEUE mode itself was flaky
(polling at places where interrupts failed to work) and the
implementation also imposed a size limit for transfers, it is best to
remove the support, so users don't fall over its limitations. It also
makes the driver a lot cleaner and more robust. If somebody really wants
less overhead, plain PIO mode could still be implemented with the
addidtional advantage that this mode is also available on MX23, too.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Reviewed-by: Marek Vasut <marex@denx.de>
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Pull drm fixes from Dave Airlie:
"Scattered selection of fixes:
- radeon: load detect fixes from SuSE/AMD
- intel: misc i830, sdvo regression, vesafb kickoff ums fix
- exynos: maintainers entry update + fixes
- udl: fix stride scanout issue
it's slightly bigger than I'd probably like, but nothing looked
dangerous enough to hold off on."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/udl: fix stride issues scanning out stride != width*bpp
drm/radeon: add load detection support for ext DAC on R200 (v2)
DRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().
DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
DRM/Radeon: Clean up code in TV DAC load detection.
drm/radeon: fix ATPX function documentation
drivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon
DRM/Radeon: On DVI-I use Load Detection when EDID is bogus.
DRM/Radeon: Fix primary DAC Load Detection for RV100 chips.
DRM/Radeon: Fix Load Detection on legacy primary DAC.
drm: exynos: removed warning due to missing typecast for mixer driver data
drm/exynos: add support for ARCH_MULTIPLATFORM
MAINTAINERS: Add git repository for Exynos DRM
drm/exynos: fix display on issue
drm/i915: Only kick out vesafb if we takeover the fbcon with KMS
drm/i915: be less verbose about inability to provide vendor backlight
drm/i915: clear the entire sdvo infoframe buffer
drm/i915: VGA needs to be on pipe A on i830M
drm/i915: fix overlay on i830M
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When buffer sharing with the i915 and using a 1680x1050 monitor,
the i915 gives is a 6912 buffer for the 6720 width, the code doesn't
render this properly as it uses one value to set the base address for
reading from the vmap and for where to start on the device.
This fixes it by calculating the values correctly for the device and
for the pixmap. No idea how I haven't seen this before now.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
Inki writes:
"As I posted before, we have added a new git repository for Exynos drm
to MAINTAINERS file so change it to new one like below,
from git://git.infradead.org/users/kmpark/linux-samsung
to git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos
And this pull request includes the following:
- fix display on issue when user requested dpms mode changing.
- add git repository for Exynos drm to MAINTAINERS file.
- add support for ARCH_MULTIPLATFORM.
- and code clean."
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm: exynos: removed warning due to missing typecast for mixer driver data
drm/exynos: add support for ARCH_MULTIPLATFORM
MAINTAINERS: Add git repository for Exynos DRM
drm/exynos: fix display on issue
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Removing the warning by adding proper type casting where local pointer
variable of type mixer driver data is assigned with void pointer.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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Exynos does not seem to have any dependency on anything from
platform headers so just needs Kconfig updated to build in
ARCH_MULTIPLATFORM builds.
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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When crtc_funcs->dpms callback is called, exynos_crtc->dpms
and exynos_encoder->dpms are changed to new mode. But if user
requests dpms mode operation, OFF -> ON, when crtc's dpms callback
is called, exynos_encoder->dpms is also changed to ON. This
makes encoder's dpms callback call be ignored so display power
couldn't become on again.
This patch removes exynos_encoder->dpms changing and adds 'updated'
variable to exynos_drm_encoder structure to avoid duplicated overlay
updating.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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into drm-fixes
Alex writes:
"This request is mostly load detection fixes from Egbert and me."
* 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: add load detection support for ext DAC on R200 (v2)
DRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().
DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
DRM/Radeon: Clean up code in TV DAC load detection.
drm/radeon: fix ATPX function documentation
drivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon
DRM/Radeon: On DVI-I use Load Detection when EDID is bogus.
DRM/Radeon: Fix primary DAC Load Detection for RV100 chips.
DRM/Radeon: Fix Load Detection on legacy primary DAC.
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The R200 asics use an external DAC for the secondary DAC.
The current KMS code tries to use code for the integrated
TV DAC for R200 which leads to unpredictable results since
R200 does not have an integrated TV DAC. This patch ports
the external DAC load detection support from the UMS
driver to KMS.
v2: fix typo in loop break logic
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Egbert Eich <eich@suse.de>
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On all dual CRTC GPUs the CRTC_CRT_ON in the RADEON_CRTC_EXT_CNTL register
controls the CRTC of the primary DAC. Therefore it is set in the DAC DMPS
function.
This is different for GPU's with a single CRTC but a primary and a
TV DAC: here it controls the single CRTC no matter where it is routed.
Therefore we set it here. This avoids an elaborate on/off state tracking
since both primary_dac_dpms() and tv_dac_dpms() functions would have
to touch this bit.
On single CRTC GPUs with just one DAC it's irrelevant where this bit
is handled.
agd5f: fix warning
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The RN50 has a TV DAC but only a single CRTC. For load detection this
DAC is controlled by the primary CRTC.
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Fix a copy&pasted documentation.
Signed-off-by: Igor Murzov <e-mail@date.by>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r1@
statement S;
position p,p1;
@@
S@p1;@p
@script:python r2@
p << r1.p;
p1 << r1.p1;
@@
if p[0].line != p1[0].line_end:
cocci.include_match(False)
@@
position r1.p;
@@
-;@p
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The Radeon driver uses the analog/digital flag to determine if the
DAC or the TMDS encoder should be enabled on a DVI-I connector.
If the EDID is bogus this flag is no longer reliable. This fix
adds a fallback to DAC load detection to determine if anything
is connected to the DAC. If not and a (bogus) EDID is found it
assumes a digital display is connected.
This works around problems with some crappy IPMI devices using
Radeon ES1000.
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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For Radeon 7500 ATI recommends a DAC_FORCE value of 0x1ac. This value
works better on ES1000 (RV100) chips, too, as it doesn't produce any false
positives on any cards I have tested. Therefore let's assume that this
value is good for all RV100 and RV200 chipset generations.
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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An uninitialized variable led to broken load detection.
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Daniel Vetter writes"
Nothing big at all for -fixes, just small stuff:
- Two patches to fix bugs on i830M
- ums regression fixer due to kicking firmeware fbs (Chris)
- tune down a too loud warning (Jani)
- be more careful with sdvo infoframes, which fixes a long-standing
sdvo-hdmi regression"
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Only kick out vesafb if we takeover the fbcon with KMS
drm/i915: be less verbose about inability to provide vendor backlight
drm/i915: clear the entire sdvo infoframe buffer
drm/i915: VGA needs to be on pipe A on i830M
drm/i915: fix overlay on i830M
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Otherwise we may remove the only console for a nomodeset system.
We became more aggressive in our kicking with
commit e188719a2891f01b3100dca4ae3a055fb5a7ab52
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Jun 12 11:28:17 2012 +0200
drm/i915: kick any firmware framebuffers before claiming the gtt
Reported-and-tested-by: monnier@iro.umontreal.ca
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54615
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org # v3.6
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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commit 28dcc2d60cb570d9f549c329b2f51400553412a1
Author: Jani Nikula <jani.nikula@intel.com>
Date: Mon Sep 3 16:25:12 2012 +0300
drm/i915: do not expose a dysfunctional backlight interface to userspace
prevents backlight interface creation if the BIOS has not set the backlight
PWM CTL registers that contain the max PWM value. It's apparently normal on
those machines, so demote the message about it to debug level.
Reported-by: Orion Poplawski <orion@cora.nwra.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=56330
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Like in the case of native hdmi, which is fixed already in
commit adf00b26d18e1b3570451296e03bcb20e4798cdd
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Tue Sep 25 13:23:34 2012 -0300
drm/i915: make sure we write all the DIP data bytes
we need to clear the entire sdvo buffer to avoid upsetting the
display.
Since infoframe buffer writing is now a bit more elaborate, extract it
into it's own function. This will be useful if we ever get around to
properly update the ELD for sdvo. Also #define proper names for the
two buffer indexes with fixed usage.
v2: Cite the right commit above, spotted by Paulo Zanoni.
v3: I'm too stupid to paste the right commit.
v4: Ben Hutchings noticed that I've failed to handle an underflow in
my loop logic, breaking it for i >= length + 8. Since I've just lost C
programmer license, use his solution. Also, make the frustrated 0-base
buffer size a notch more clear.
Reported-and-tested-by: Jürg Billeter <j@bitron.ch>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=25732
Cc: stable@vger.kernel.org
Cc: Paulo Zanoni <przanoni@gmail.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The bit doesn't stick, and the output is always cloned from pipe A,
even when it's supposed to scan out from pipe B.
Shuts up annoying warnings from the modeset-rework, too.
I've noticed that with this patch we know get and unknown connection
state since the code can't find a suitable pipe for load detection.
But that beats the previous state of affairs, where it tried to use
pipe B, actually used pipe A and concluded that something is connected
(although it's the LVDS on pipe A and nothing on the VGA connector on
pipe B).
I've tried to make load detect work by remapping the pipe->planes
stuff, so that crtc 0 will use pipe B and hence we still have
something left for load-detect on pipe A. But alas, that upset the hw
a bit.
So there's still some things to figure out, but this here will at
least paper over some of the problems.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51265
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: extend the commit message a bit with recent observations.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The overlay on the i830M has a peculiar failure mode: It works the
first time around after boot-up, but consistenly hangs the second time
it's used.
Chris Wilson has dug out a nice errata:
"1.5.12 Clock Gating Disable for Display Register
Address Offset: 06200h–06203h
"Bit 3
Ovrunit Clock Gating Disable.
0 = Clock gating controlled by unit enabling logic
1 = Disable clock gating function
DevALM Errata ALM049: Overlay Clock Gating Must be Disabled: Overlay
& L2 Cache clock gating must be disabled in order to prevent device
hangs when turning off overlay.SW must turn off Ovrunit clock gating
(6200h) and L2 Cache clock gating (C8h)."
Now I've nowhere found that 0xc8 register and hence couldn't apply the
l2 cache workaround. But I've remembered that part of the magic that
the OVERLAY_ON/OFF commands are supposed to do is to rearrange cache
allocations so that the overlay scaler has some scratch space.
And while pondering how that could explain the hang the 2nd time we
enable the overlay, I've remembered that the old ums overlay code did
_not_ issue the OVERLAY_OFF cmd.
And indeed, disabling the OFF cmd results in the overlay working
flawlessly, so I guess we can workaround the lack of the above
workaround by simply never disabling the overlay engine once it's
enabled.
Note that we have the first part of the above w/a already implemented
in i830_init_clock_gating - leave that as-is to avoid surprises.
v2: Add a comment in the code.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47827
Cc: stable@vger.kernel.org
Tested-by: Rhys <rhyspuk@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Pull networking fixes from David Miller:
"First post-Sandy pull request"
1) Fix antenna gain handling and initialization of chan->max_reg_power
in wireless, from Felix Fietkau.
2) Fix nexthop handling in H.232 conntrack helper, from Julian
Anastasov.
3) Only process 80211 mesh config header in certain kinds of frames,
from Javier Cardona.
4) 80211 management frame header length needs to be validated, from
Johannes Berg.
5) Don't access free'd SKBs in ath9k driver, from Felix Fietkay.
6) Test for permanent state correctly in VXLAN driver, from Stephen
Hemminger.
7) BNX2X bug fixes from Yaniv Rosner and Dmitry Kravkov.
8) Fix off by one errors in bonding, from Nikolay ALeksandrov.
9) Fix divide by zero in TCP-Illinois congestion control. From Jesper
Dangaard Brouer.
10) TCP metrics code says "Yo dawg, I heard you like sizeof, so I did a
sizeof of a sizeof, so you can size your size" Fix from Julian
Anastasov.
11) Several drivers do mdiobus_free without first doing an
mdiobus_unregister leading to stray pointer references. Fix from
Peter Senna Tschudin.
12) Fix OOPS in l2tp_eth_create() error path, it's another danling
pointer kinda situation. Fix from Tom Parkin.
13) Hardware driven by the vmxnet driver can't handle larger than 16K
fragments, so split them up when necessary. From Eric Dumazet.
14) Handle zero length data length in tcp_send_rcvq() properly. Fix
from Pavel Emelyanov.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
tcp-repair: Handle zero-length data put in rcv queue
vmxnet3: must split too big fragments
l2tp: fix oops in l2tp_eth_create() error path
cxgb4: Fix unable to get UP event from the LLD
drivers/net/phy/mdio-bitbang.c: Call mdiobus_unregister before mdiobus_free
drivers/net/ethernet/nxp/lpc_eth.c: Call mdiobus_unregister before mdiobus_free
bnx2x: fix HW initialization using fw 7.8.x
tcp: Fix double sizeof in new tcp_metrics code
net: fix divide by zero in tcp algorithm illinois
net: sctp: Fix typo in net/sctp
bonding: fix second off-by-one error
bonding: fix off-by-one error
bnx2x: Disable FCoE for 57840 since not yet supported by FW
bnx2x: Fix no link on 577xx 10G-baseT
bnx2x: Fix unrecognized SFP+ module after driver is loaded
bnx2x: Fix potential incorrect link speed provision
bnx2x: Restore global registers back to default.
bnx2x: Fix link down in 57712 following LFA
bnx2x: Fix 57810 1G-KR link against certain switches.
ixgbe: PTP get_ts_info missing software support
...
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When sending data into a tcp socket in repair state we should check
for the amount of data being 0 explicitly. Otherwise we'll have an skb
with seq == end_seq in rcv queue, but tcp doesn't expect this to happen
(in particular a warn_on in tcp_recvmsg shoots).
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Reported-by: Giorgos Mavrikas <gmavrikas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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vmxnet3 has a 16Kbytes limit per tx descriptor, that happened to work
as long as we provided PAGE_SIZE fragments.
Our stack can now build larger fragments, so we need to split them to
the 16kbytes boundary.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: jongman heo <jongman.heo@samsung.com>
Tested-by: jongman heo <jongman.heo@samsung.com>
Cc: Shreyas Bhatewara <sbhatewara@vmware.com>
Reviewed-by: Bhavesh Davda <bhavesh@vmware.com>
Signed-off-by: Shreyas Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When creating an L2TPv3 Ethernet session, if register_netdev() should fail for
any reason (for example, automatic naming for "l2tpeth%d" interfaces hits the
32k-interface limit), the netdev is freed in the error path. However, the
l2tp_eth_sess structure's dev pointer is left uncleared, and this results in
l2tp_eth_delete() then attempting to unregister the same netdev later in the
session teardown. This results in an oops.
To avoid this, clear the session dev pointer in the error path.
Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If T4 configuration file gets loaded from the /lib/firmware/cxgb4/ directory
then offload capabilities of the cards were getting disabled during
initialization. Hence ULDs do not get an UP event from the LLD.
Signed-off-by: Jay Hernandez <jay@chelsio.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Based on commit b27393aecf66199f5ddad37c302d3e0cfadbe6c0
Calling mdiobus_free without calling mdiobus_unregister causes
BUG_ON(). This patch fixes the issue.
The semantic patch that found this issue(http://coccinelle.lip6.fr/):
// <smpl>
@@
expression E;
@@
... when != mdiobus_unregister(E);
+ mdiobus_unregister(E);
mdiobus_free(E);
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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