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No need for a GEM reference here.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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No need for the GEM reference here.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Not necessary for VRAM.
v2: no need to check if ttm is NULL.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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As soon as we leave the spinlock after the job has been added to the job
queue, we can no longer rely on the job's data to be available.
I have seen a null-pointer dereference due to sched == NULL in
amd_sched_wakeup via amd_sched_entity_push_job and
amd_sched_ib_submit_kernel_helper. Since the latter initializes
sched_job->sched with the address of the ring scheduler, which is
guaranteed to be non-NULL, this race appears to be a likely culprit.
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Bugzilla: https://bugs.freedesktop.org/attachment.cgi?bugid=93079
Reviewed-by: Christian König <christian.koenig@amd.com>
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Missing error check if the operation failed.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
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Thinkpad T40p needs agpmode 1.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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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>
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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>
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Apparently pre-nv50 pageflip events happen before the actual vblank
period. Therefore that functionality got semi-disabled in
commit af4870e406126b7ac0ae7c7ce5751f25ebe60f28
Author: Mario Kleiner <mario.kleiner.de@gmail.com>
Date: Tue May 13 00:42:08 2014 +0200
drm/nouveau/kms/nv04-nv40: fix pageflip events via special case.
Unfortunately that hack got uprooted in
commit cc1ef118fc099295ae6aabbacc8af94d8d8885eb
Author: Thierry Reding <treding@nvidia.com>
Date: Wed Aug 12 17:00:31 2015 +0200
drm/irq: Make pipe unsigned and name consistent
Triggering a warning when trying to sample the vblank timestamp for a
non-existing pipe. There's a few ways to fix this:
- Open-code the old behaviour, which just enshrines this slight
breakage of the userspace ABI.
- Revert Mario's commit and again inflict broken timestamps, again not
pretty.
- Fix this for real by delaying the pageflip TS until the next vblank
interrupt, thereby making it accurate.
This patch implements the third option. Since having a page flip
interrupt that happens when the pageflip gets armed and not when it
completes in the next vblank seems to be fairly common (older i915 hw
works very similarly) create a new helper to arm vblank events for
such drivers.
v2 (Mario Kleiner):
- Fix function prototypes in drmP.h
- Add missing vblank_put() for pageflip completion without
pageflip event.
- Initialize sequence number for queued pageflip event to avoid
trouble in drm_handle_vblank_events().
- Remove dead code and spelling fix.
v3 (Mario Kleiner):
- Add a signed-off-by and cc stable tag per Ilja's advice.
v4 (Thierry Reding):
- Fix kerneldoc typo, discovered by Michel Dänzer
- Rearrange tags and changelog
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=106431
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mario Kleiner <mario.kleiner.de@gmail.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: stable@vger.kernel.org # v4.3
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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A client calling drmSetMaster() using a file descriptor that was opened
when another client was master would inherit the latter client's master
object and all its authenticated clients.
This is unwanted behaviour, and when this happens, instead allocate a
brand new master object for the client calling drmSetMaster().
Fixes a BUG() throw in vmw_master_set().
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.pengutronix.de/git/pza/linux into drm-fixes
imx-drm crtc, plane, parallel panel, and TV encoder fixes
- Use drm_crtc_send_vblank_event to fix per crtc vblank handling
- Move the crtc device of_node assignment out of the ipuv3-crtc driver into
ipu-common code, where the devices are created.
- Fix parallel display support with simple-panels
- Remove some unused fields and superfluous checks
- Switch to universal planes and add error handling for primary plane creation
- Fix module autoload for TV encoder driver
* tag 'imx-drm-fixes-2015-12-01' of git://git.pengutronix.de/git/pza/linux:
drm: imx: imx-tve: Fix module autoload for OF platform driver
drm: imx: convert to drm_crtc_send_vblank_event()
GPU-DRM-IMX: Delete an unnecessary check before drm_fbdev_cma_restore_mode()
drm/imx: Remove of_node assignment from ipuv3-crtc driver probe
gpu: ipu-v3: Assign of_node of child platform devices to corresponding ports
gpu: ipu-v3: Remove reg_offset field
gpu: ipu-v3: drop unused dmfc field from client platform data
drm/imx: parallel-display: allow to determine bus format from the connected panel
drm/imx: ipuv3-crtc: Return error if ipu_plane_init() fails for primary plane
drm/imx: switch to universal planes
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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>
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ipu_crtc_handle_pageflip() was calling drm_send_vblank_event() with
a pipe argument of -1. Commit cc1ef118fc09 ("drm/irq: Make pipe
unsigned and name consistent") now makes this error obvious, as we
now may get a warning from:
if (WARN_ON(pipe >= dev->num_crtcs))
in drm_vblank_count_and_time(). Prior to this change, we would end
up making out-of-bounds array accesses via:
struct drm_vblank_crtc *vblank = &dev->vblank[crtc];
and
*vblanktime = vblanktimestamp(dev, pipe, cur_vblank);
So, this has been broken for a very long time, and is not a result
of the above commit. Since we don't care about the staging versions,
I've tagged this with the earliest mainline commit where we do care,
even though this commit did not introduce the bug.
Fixes: 6556f7f82b9c ("drm: imx: Move imx-drm driver out of staging")
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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The drm_fbdev_cma_restore_mode() function tests whether its argument
is NULL and then returns immediately.
Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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The crtc child device driver shouldn't modify the of_node of its platform
device in the probe function. Instead, since the previous patch, the IPU
core driver sets the of_node when the platform device is created.
Drop the now unused custom imx_drm_get_port_by_id function.
Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The crtc child device driver shouldn't have to modify the of_node of its
platform device in the probe function. Instead, let the IPU core driver
set the of_node when the platform device is created.
Also reorder the client_reg array so the elements are in port id order
(CSIs first, then DIs).
Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This is not used, so remove it.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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This field is never used, drop it.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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panel
Similarly to commit 5e501ed7253b3 ("drm/imx: imx-ldb: allow to determine
bus format from the connected panel"), if a panel is connected to the ldb
output port via the of_graph bindings, the data mapping is determined from
the display_info.bus_format field provided by the panel instead of from the
optional interface_pix_fmt device tree property.
Reported-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Gary Bisson <gary.bisson@boundarydevices.com>
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For primary plane initialization failure cases, ipu_plane_init() may return
a pointer encoded by ERR_PTR(). So, we should bailout instead of using that
pointer blindly.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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Use drm_universal_plane_init to create the planes, create the primary
plane first and use drm_crtc_init_with_planes to associate it with
the crtc.
This gets rid of the unused fallback primary plane previously created
by drm_crtc_init and fixes a NULL pointer dereference issue that can
be triggered by a modeset from userspace when fbdev helpers are
enabled [1].
[1] https://lkml.org/lkml/2015/11/4/107
Reported-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <Ying.Liu@freescale.com>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
Another batch of drm/i915 fixes for v4.4, on top of the ones from
earlier this week. One timeout handling regression fix from Chris, and
backport of five patches from our -next to fix a power management
related HDMI hotplug regression.
* tag 'drm-intel-fixes-2015-12-03' of git://anongit.freedesktop.org/drm-intel:
drm/i915: take a power domain reference while checking the HDMI live status
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: Introduce a gmbus power domain
drm/i915: Clean up AUX power domain handling
drm/i915: Check the timeout passed to i915_wait_request
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There are platforms that don't need the full GMBUS power domain (BXT)
while others do (PCH, VLV/CHV). For optimizing this we would need to add
a new power domain, but it's not clear how much we would benefit given
the short time we hold the reference. So for now let's keep things
simple.
This fixes a regression introduced in
commit 237ed86c693d8a8e4db476976aeb30df4deac74b
Author: Sonika Jindal <sonika.jindal@intel.com>
Date: Tue Sep 15 09:44:20 2015 +0530
drm/i915: Check live status before reading edid
v2:
- fix commit message, PCH won't take any redundant power resource after
this change (Ville)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[fix commit message in v2 (Imre)]
[Cherry-picked from drm-intel-next-queued 29bb94bb (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-6-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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MISSING_CASE() would have been useful to track down a recent problem in
intel_display_port_aux_power_domain(), so add it there and a few related
helpers. This was also suggested by Ville in his review of the latest
DMC/DC changes, we forgot to address that.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
[Cherry-picked from drm-intel-next-queued b9fec167 (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-5-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Due to the current sharing of the DDI encoder between DP and HDMI
connectors we can run the DP detection after the HDMI detection has
already set the shared encoder's type. For now solve this keeping the
current behavior and running the detection in this case too. For a proper
solution Ville suggested to split the encoder into an HDMI and DP one, that
can be done as a follow-up.
This issue triggers the WARN in intel_display_port_aux_power_domain() and
was introduced in:
commit 25f78f58e5bfb46a270ce4d690fb49dc104558b1
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon Nov 16 15:01:04 2015 +0100
drm/i915: Clean up AUX power domain handling
CC: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
[Cherry-picked from drm-intel-next-queued 651174a4 (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-4-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Currently the gmbus code uses intel_aux_display_runtime_get/put in an
effort to make sure the hardware is powered up sufficiently for gmbus.
That function only takes the runtime PM reference which on VLV/CHV/BXT
is not enough. We need the disp2d/pipe-a well on VLV/CHV and power well
2 on BXT. So add a new power domnain for gmbus and kill off the now
unused intel_aux_display_runtime_get/put. And change
intel_hdmi_set_edid() to use the gmbus power domain too since that's all
we need there.
Also toss in a BUILD_BUG_ON() to catch problems if we run out of
bits for power domains. We're already really close to the limit...
[Patrik: Add gmbus string to debugfs output]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
[Cherry-picked from drm-intel-next-queued f0ab43e6 (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-3-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Introduce intel_display_port_aux_power_domain() which simply returns
the appropriate AUX power domain for a specific port, and then replace
the intel_display_port_power_domain() with calls to the new function
in the DP code. As long as we're not actually enabling the port we don't
need the lane power domains, and those are handled now purely from
modeset_update_crtc_power_domains().
My initial motivation for this was to see if I could keep the DPIO power
wells powered down while doing AUX on CHV, but turns out I can't so this
doesn't change anything for CHV at least. But I think it's still a
worthwile change.
v2: Add case for PORT E. Default to POWER_DOMAIN_AUX_D for now. (Ville)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
[Cherry-picked from drm-intel-next-queued 25f78f58 (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-2-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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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 b47161858ba13c9c7e03333132230d66e008dd55
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>
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https://github.com/markyzq/kernel-drm-rockchip into drm-fixes
Rockchip fixes from Mark.
* 'drm-fixes-rockchip-2015-12-02' of https://github.com/markyzq/kernel-drm-rockchip:
drm/rockchip: Use CRTC vblank event interface
drm/rockchip: Fix module autoload for OF platform driver
drm/rockchip: vop: fix window origin calculation
drm/rockchip: unset pgoff when mmap'ing gems
drm/rockchip: vop: Correct enabled clocks during setup
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Passing -1 as the pipe for vblank events now triggers a WARN_ON, but had
previously made multi-screen unusable anyway. Pass the correct pipe to
the event-send function, and use the new API to make this a bit easier
for us.
Fixes WARN present since cc1ef118fc for every pageflip event sent:
[ 209.549969] ------------[ cut here ]------------
[ 209.554592] WARNING: CPU: 3 PID: 238 at drivers/gpu/drm/drm_irq.c:924 drm_vblank_count_and_time+0x80/0x88 [drm]()
[ 209.564832] Modules linked in: [...]
[ 209.612401] CPU: 3 PID: 238 Comm: irq/41-ff940000 Tainted: G W 4.3.0-rc6+ #71
[ 209.620647] Hardware name: Rockchip (Device Tree)
[ 209.625348] [<c001bb80>] (unwind_backtrace) from [<c001615c>] (show_stack+0x20/0x24)
[ 209.633079] [<c001615c>] (show_stack) from [<c02b2c50>] (dump_stack+0x8c/0x9c)
[ 209.640289] [<c02b2c50>] (dump_stack) from [<c0052e88>] (warn_slowpath_common+0x94/0xc4)
[ 209.648364] [<c0052e88>] (warn_slowpath_common) from [<c0052f74>] (warn_slowpath_null+0x2c/0x34)
[ 209.657139] [<c0052f74>] (warn_slowpath_null) from [<bf17dc30>] (drm_vblank_count_and_time+0x80/0x88 [drm])
[ 209.666875] [<bf17dc30>] (drm_vblank_count_and_time [drm]) from [<bf17e484>] (drm_send_vblank_event+0x74/0x7c [drm])
[ 209.677385] [<bf17e484>] (drm_send_vblank_event [drm]) from [<bf4c1144>] (vop_win_state_complete+0x4c/0x70 [rockchip_drm_vop])
[ 209.688757] [<bf4c1144>] (vop_win_state_complete [rockchip_drm_vop]) from [<bf4c3bdc>] (vop_isr_thread+0x170/0x1d4 [rockchip_drm_vop])
[ 209.700822] [<bf4c3bdc>] (vop_isr_thread [rockchip_drm_vop]) from [<c00ab93c>] (irq_thread_fn+0x2c/0x50)
[ 209.710284] [<c00ab93c>] (irq_thread_fn) from [<c00abcac>] (irq_thread+0x13c/0x188)
[ 209.717927] [<c00abcac>] (irq_thread) from [<c00723c8>] (kthread+0xec/0x104)
[ 209.724965] [<c00723c8>] (kthread) from [<c0011638>] (ret_from_fork+0x14/0x3c)
[ 209.732171] ---[ end trace 0690bc604f5d535d ]---
Signed-off-by: Daniel Stone <daniels@collabora.com>
Cc: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Tested-By: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Thierry Reding <treding@nvidia.com>
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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>
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VOP_WINx_DSP_ST does not require subtracting 1 from the values written to
it. It actually causes the screen to be shifted by one pixel.
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Tested-by: Yakir Yang <ykk@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dominik Behr <dbehr@chromium.org>
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
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Commit 371f0f085f629 ("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: 371f0f085f629 ("ARM: 8426/1: dma-mapping: add missing range check in dma_mmap()")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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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>
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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>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
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
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Currently a DDI port may register the DP hotplug handler even though
it's used with HDMI, and the DP HPD handler overrides the encoder
type forcibly to DP. This caused the inconsistency on a machine
connected with a HDMI monitor; upon a hotplug event, the DDI port is
suddenly switched to be handled as a DP although the same monitor is
kept connected, and this leads to the erroneous blank output.
This patch papers over the bug by excluding the previous HDMI encoder
type from this override. This should be fixed more fundamentally,
e.g. by moving the encoder type reset from the HPD or by having
individual encoder objects for HDMI and DP. But since the bug has
been present for a long time (3.17), it's better to have a
quick-n-dirty fix for now, and keep working on a cleaner fix.
Bugzilla: http://bugzilla.opensuse.org/show_bug.cgi?id=955190
Fixes: 0e32b39ceed6 ('drm/i915: add DP 1.2 MST support (v0.7)')
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1447931396-19147-1-git-send-email-tiwai@suse.de
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The commit [cfb23ed622d0: drm/i915: Allow fuzzy matching in
pipe_config_compare, v2] relaxed the way to compare the pipe
configurations, but one new comparison sneaked in there: it added the
strict has_drrs value check. This causes a regression on many
machines, typically HP laptops with a docking port, where the kernel
spews warnings and eventually fails to set the mode properly like:
[drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in has_drrs (expected 1, found 0)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 79 at drivers/gpu/drm/i915/intel_display.c:12700 intel_modeset_check_state+0x5aa/0x870 [i915]()
pipe state doesn't match!
....
This patch just removes the check again for fixing the regression.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=104041
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92456
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=956397
Fixes: cfb23ed622d0 ('drm/i915: Allow fuzzy matching in pipe_config_compare, v2')
Cc: <stable@vger.kernel.org> # v4.3+
Reported-and-tested-by: Max Lin <mlin@suse.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448461607-16868-1-git-send-email-tiwai@suse.de
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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We have varied reports of swizzling corruption on gen4 desktop, and
confirmation that one at least is triggered by uneven memory banks
(L-shaped memory). The implication is that the swizzling varies between
the paired channels and the remainder of memory on the single channel. As
the object then has unpredictable swizzling (it will vary depending on
exact page allocation and may even change during the object's lifetime as
the pages are replaced), we have to report to userspace that the swizzling
is unknown.
However, some existing userspace is buggy when it meets an unknown
swizzling configuration and so we need to tell another white lie and
mark the swizzling as NONE but report it as UNKNOWN through the extended
get-tiling-ioctl. See
commit 5eb3e5a5e11d14f9deb2a4b83555443b69ab9940
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun Jun 28 09:19:26 2015 +0100
drm/i915: Declare the swizzling unknown for L-shaped configurations
for the previous example where we found that telling the truth to
userspace just ends up in a world of hurt.
Also since we don't truly know what the swizzling is on the pages, we
need to keep them pinned to prevent swapping as the reports also
suggest that some gen4 devices have previously undetected bit17
swizzling.
v2: Combine unknown + quirk patches to prevent userspace ever seeing
unknown swizzling through the normal get-tiling-ioctl. Also use the same
path for the existing uneven bank detection for mobile gen4.
Reported-by: Matti Hämäläinen <ccr@tnsp.org>
Tested-by: Matti Hämäläinen <ccr@tnsp.org>
References: https://bugs.freedesktop.org/show_bug.cgi?id=90725
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matti Hämäläinen <ccr@tnsp.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1447927085-31726-1-git-send-email-chris@chris-wilson.co.uk
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes a couple of crypto drivers that were using memcmp to verify
authentication tags. They now use crypto_memneq instead"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: talitos - Fix timing leak in ESP ICV verification
crypto: nx - Fix timing leak in GCM and CCM decryption
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Using non-constant time memcmp() makes the verification of the authentication
tag in the decrypt path vulnerable to timing attacks. Fix this by using
crypto_memneq() instead.
Cc: stable@vger.kernel.org
Signed-off-by: David Gstir <david@sigma-star.at>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Using non-constant time memcmp() makes the verification of the authentication
tag in the decrypt path vulnerable to timing attacks. Fix this by using
crypto_memneq() instead.
Cc: stable@vger.kernel.org
Signed-off-by: David Gstir <david@sigma-star.at>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph fix from Sage Weil:
"This addresses a refcounting bug that leads to a use-after-free"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: don't put snap_context twice in rbd_queue_workfn()
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Commit 4e752f0ab0e8 ("rbd: access snapshot context and mapping size
safely") moved ceph_get_snap_context() out of rbd_img_request_create()
and into rbd_queue_workfn(), adding a ceph_put_snap_context() to the
error path in rbd_queue_workfn(). However, rbd_img_request_create()
consumes a ref on snapc, so calling ceph_put_snap_context() after
a successful rbd_img_request_create() leads to an extra put. Fix it.
Cc: stable@vger.kernel.org # 3.18+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
- NFIT parsing regression fixes from Linda. The nvdimm hot-add
implementation merged in 4.4-rc1 interpreted the specification in a
way that breaks actual HPE platforms. We are also closing the loop
with the ACPI Working Group to get this clarification added to the
spec.
- Andy pointed out that his laptop without nvdimm resources is loading
the e820-nvdimm module by default, fix that up to only load the
module when an e820-type-12 range is present.
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: Adjust for different _FIT and NFIT headers
nfit: Fix the check for a successful NFIT merge
nfit: Account for table size length variation
libnvdimm, e820: skip module loading when no type-12
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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>
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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>
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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>
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If there are no persistent memory ranges present then don't bother
creating the platform device. Otherwise, it loads the full libnvdimm
sub-system only to discover no resources present.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Pull ARM KVM fixes from Paolo Bonzini:
- a series of fixes to deal with the aliasing between the sp and xzr
register
- a fix for the cache flush fix that went in -rc3
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
ARM/arm64: KVM: correct PTE uncachedness check
arm64: KVM: Get rid of old vcpu_reg()
arm64: KVM: Correctly handle zero register in system register accesses
arm64: KVM: Remove const from struct sys_reg_params
arm64: KVM: Correctly handle zero register during MMIO
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