Markus Elfring [Fri, 5 May 2017 13:33:19 +0000 (15:33 +0200)]
drm/sti: Adjust two checks for null pointers in sti_hqvdp_probe()
MIME-Version: 1.0
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The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written !…
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/918229e6-80fe-629f-8fec-bf60ac15275f@users.sourceforge.net
Markus Elfring [Fri, 5 May 2017 13:32:08 +0000 (15:32 +0200)]
drm/sti: Fix typos in a comment line
Adjust this description for a function call.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/e70bf37b-a461-873e-4ba3-40bf43cc7b21@users.sourceforge.net
Markus Elfring [Fri, 5 May 2017 13:30:44 +0000 (15:30 +0200)]
drm/sti: Fix a typo in a comment line
Add a missing character in this description for a data structure.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/a5a1f6cb-ba9d-0f7d-9126-9aeffb3783ad@users.sourceforge.net
Markus Elfring [Fri, 5 May 2017 13:00:46 +0000 (15:00 +0200)]
drm/sti: Replace 17 seq_puts() calls by seq_putc()
Single characters should be put into a sequence at several places.
Thus use the corresponding function "seq_putc".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/5b4e2964-0742-8367-976f-678356d9347a@users.sourceforge.net
Markus Elfring [Fri, 5 May 2017 12:54:52 +0000 (14:54 +0200)]
drm/sti: Reduce function calls for sequence output at five places
Some data were put into a sequence by separate function calls.
Print the same data by five single function calls instead.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1f5c5b0d-77c4-6efc-7906-cee76c33d2b0@users.sourceforge.net
Nicolas Iooss [Fri, 31 Mar 2017 19:25:07 +0000 (21:25 +0200)]
drm/sti: use seq_puts to display a string
gdp_dbg_ctl() uses seq_printf() to display a color format name even
though there is no format string. When using -Wformat-string, gcc
reports the following warning:
drivers/gpu/drm/sti/sti_gdp.c: In function 'gdp_dbg_ctl':
drivers/gpu/drm/sti/sti_gdp.c:150:18: warning: format not a string
literal and no format arguments [-Wformat-security]
seq_printf(s, gdp_format_to_str[i].name);
^~~~~~~~~~~~~~~~~
Silence this warning by using seq_puts() instead.
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170331192507.20538-1-nicolas.iooss_linux@m4x.org
Daniel Vetter [Mon, 8 May 2017 08:26:33 +0000 (10:26 +0200)]
drm: Nerf the preclose callback for modern drivers
With all drivers converted there's only legacy dri1 drivers using it.
Not going to touch those, instead just hide it like we've done with
other dri1 driver hooks like firstopen.
In all this I didn't find any real reason why we'd needed 2 hooks, and
having symmetry between open and close just appeases my OCD better.
Yeah, someone else could do an s/postclose/close/, but that's for
someone who understands cocci. And maybe after this series is reviewed
and landed, to avoid patch-regen churn.
v2: s/last/post/close in the kernel-doc (Sean).
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170508082633.4214-4-daniel.vetter@ffwll.ch
Daniel Vetter [Mon, 8 May 2017 08:26:32 +0000 (10:26 +0200)]
drm/exynos: Merge pre/postclose hooks
Again no apparent explanation for the split except hysterical raisins.
Merging them also makes it a bit more obviuos what's going on wrt the
runtime pm refdancing.
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170508082633.4214-3-daniel.vetter@ffwll.ch
Daniel Vetter [Mon, 8 May 2017 08:26:31 +0000 (10:26 +0200)]
drm/tegra: switch to postclose
I didn't spot anything that would require ordering here (well not
anywhere else either), and I'm trying to unify at least modern drivers
on one close hook.
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-tegra@vger.kernel.org
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170508082633.4214-2-daniel.vetter@ffwll.ch
Daniel Vetter [Mon, 8 May 2017 08:26:30 +0000 (10:26 +0200)]
drm/nouveau: Merge pre/postclose hooks
Again no apparent explanation for the split except hysterical raisins.
Merging them also makes it a bit more obviuos what's going on wrt the
runtime pm refdancing.
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: nouveau@lists.freedesktop.org
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170508082633.4214-1-daniel.vetter@ffwll.ch
Tom Cooksey [Thu, 13 Apr 2017 03:17:46 +0000 (20:17 -0700)]
drm/pl111: Initial drm/kms driver for pl111
This is a modesetting driver for the pl111 CLCD display controller
found on various ARM platforms such as the Versatile Express. The
driver has only been tested on the bcm911360_entphn platform so far,
with PRIME-based buffer sharing between vc4 and clcd.
It reuses the existing devicetree binding, while not using quite as
many of its properties as the fbdev driver does (those are left for
future work).
v2: Nearly complete rewrite by anholt, cutting 2/3 of the code thanks
to DRM core's excellent new helpers.
v3: Don't match pl110 any more, don't attach if we don't have a DRM
panel, use DRM_GEM_CMA_FOPS, update MAINTAINERS, use the simple
display helper, use drm_gem_cma_dumb_create (same as our wrapper).
v4: Change the driver's .name to not clash with fbdev in sysfs, drop
platform alias, drop redundant "drm" in DRM driver name, hook up
.prepare_fb to the CMA helper so that DMA fences should work.
v5: Move register definitions inside the driver directory, fix build
in COMPILE_TEST and !AMBA mode.
v6: Drop TIM2_CLKSEL for now to be consistent with existing DT
bindings, switch back to external register definitions.
Signed-off-by: Tom Cooksey <tom.cooksey@arm.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org> (v5)
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170413031746.12921-2-eric@anholt.net
Eric Anholt [Thu, 13 Apr 2017 03:17:45 +0000 (20:17 -0700)]
video: ARM CLCD: Move registers to a separate header.
We'd like to reuse these register definitions for the DRM CLCD driver,
but there's a bunch of fbdev-specific code in the current header.
v2: Add #ifndef guard.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170413031746.12921-1-eric@anholt.net
Eric Anholt [Fri, 28 Apr 2017 22:42:23 +0000 (15:42 -0700)]
drm/vc4: Add specific compatible strings for Cygnus.
Cygnus has V3D 2.6 instead of 2.1, and doesn't use the VC4 display
modules. The V3D can be uniquely identified by the IDENT[01]
registers, and there's nothing to key off of for the display change
other than the lack of DT nodes for the display components, but it's
convention to have new compatible strings anyway.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Rob Herring <robh@kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170428224223.21904-3-eric@anholt.net
Eric Anholt [Fri, 28 Apr 2017 22:42:22 +0000 (15:42 -0700)]
drm/vc4: Don't try to initialize FBDEV if we're only bound to V3D.
There's no sense in having an fbdev if there's no display, since
connectors don't get hotplugged to this hardware. On Cygnus we were
getting a dmesg error from passing in num_connectors (0), when that
argument is supposed to be the maximum number of cloned connectors per
CRTC (1).
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170428224223.21904-2-eric@anholt.net
Eric Anholt [Fri, 28 Apr 2017 22:42:21 +0000 (15:42 -0700)]
drm/vc4: Turn the V3D clock on at runtime.
For the Raspberry Pi's bindings, the power domain also implicitly
turns on the clock and deasserts reset, but for the new Cygnus port we
start representing the clock in the devicetree.
v2: Document the clock-names property, check for -ENOENT for no clock
in DT.
v3: Drop NULL checks around clk calls which embed NULL checks.
v4: Drop clk-names (feedback by Rob Herring)
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Rob Herring <robh@kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170428224223.21904-1-eric@anholt.net
Imre Deak [Wed, 26 Apr 2017 13:40:13 +0000 (16:40 +0300)]
drm: Remove redundant NULL check during atomic plane commit
plane_state can't be NULL anywhere in this function, so the NULL check
at the end is redundant, remove it.
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1493214013-15580-9-git-send-email-imre.deak@intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Markus Elfring [Mon, 8 May 2017 08:55:42 +0000 (10:55 +0200)]
dma-buf: Use seq_putc() in two functions
Three single characters (line breaks) should be put into a sequence.
Thus use the corresponding function "seq_putc".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/b8a85220-039a-e4bb-c74b-d76baab234e8@users.sourceforge.net
Markus Elfring [Mon, 8 May 2017 08:54:17 +0000 (10:54 +0200)]
dma-buf: Adjust a null pointer check in dma_buf_attach()
The script "checkpatch.pl" pointed information out like the following.
Comparison to NULL could be written "!attach"
Thus adjust this expression.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Markus Elfring [Mon, 8 May 2017 08:50:09 +0000 (10:50 +0200)]
dma-buf: Improve a size determination in dma_buf_attach()
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Markus Elfring [Mon, 8 May 2017 08:32:44 +0000 (10:32 +0200)]
dma-buf: Combine two function calls into one in dma_buf_debug_show()
A bit of data was put into a sequence by two separate function calls.
Print the same data by a single function call instead.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Maarten Lankhorst [Mon, 1 May 2017 13:37:54 +0000 (15:37 +0200)]
drm/atomic: Add support for custom scaling mode properties, v2
Some connectors may not allow all scaling mode properties, this function will allow
creating the scaling mode property with only the supported subset. It also wires up
this state for atomic.
This will make it possible to convert i915 connectors to atomic.
Changes since v1:
- Add DRM_MODE_PROP_ENUM flag to drm_property_create
- Use the correct index in drm_property_add_enum.
- Add DocBook for function (Sean Paul).
- Warn if less than 2 valid scaling modes are passed.
- Remove level of indent. (Sean Paul)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170501133804.8116-3-maarten.lankhorst@linux.intel.com
[mlankhorst: Rename function, fix docbook issues]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Maarten Lankhorst [Mon, 1 May 2017 13:37:53 +0000 (15:37 +0200)]
drm/atomic: Handle picture_aspect_ratio in atomic core
This is only used in i915, which had used its own non-atomic way to
deal with the picture aspect ratio. Move selected aspect_ratio to
atomic state and use the atomic state in the affected i915 connectors.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170501133804.8116-2-maarten.lankhorst@linux.intel.com
[mlankhorst: taomic -> atomic thanks to Manasi's input]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Laura Abbott [Thu, 4 May 2017 18:45:48 +0000 (11:45 -0700)]
drm/vgem: Enable dmabuf import interfaces
Enable the GEM dma-buf import interfaces in addition to the export
interfaces. This lets vgem be used as a test source for other allocators
(e.g. Ion).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-4-git-send-email-labbott@redhat.com
Laura Abbott [Thu, 4 May 2017 18:45:47 +0000 (11:45 -0700)]
drm/prime: Introduce drm_gem_prime_import_dev
The existing drm_gem_prime_import function uses the underlying
struct device of a drm_device for attaching to a dma_buf. Some drivers
(notably vgem) may not have an underlying device structure. Offer
an alternate function to attach using any available device structure.
Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-3-git-send-email-labbott@redhat.com
Laura Abbott [Thu, 4 May 2017 18:45:46 +0000 (11:45 -0700)]
drm/vgem: Add a dummy platform device
The vgem driver is currently registered independent of any actual
device. Some usage of the dmabuf APIs require an actual device structure
to do anything. Register a dummy platform device for use with dmabuf.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-2-git-send-email-labbott@redhat.com
Pandiyan, Dhinakaran [Fri, 28 Apr 2017 23:14:20 +0000 (16:14 -0700)]
drm/i915: Track MST link bandwidth
Use the added helpers to track MST link bandwidth for atomic modesets.
Link bw is acquired in the ->atomic_check() phase when CRTCs are being
enabled with drm_atomic_find_vcpi_slots(). Similarly, link bw is released
during ->atomic_check() with the connector helper callback ->atomic_check()
when CRTCs are disabled.
v6: active_changed does not alter vcpi allocations (Maarten)
v5: Implement connector->atomic_check() in place of atomic_release()
v4: Return an int from intel_dp_mst_atomic_release() (Maarten)
v3:
Handled the case where ->atomic_release() is called more than once
during an atomic_check() for the same state.
v2:
Squashed atomic_release() implementation and caller (Daniel)
Fixed logic for connector-crtc switching case (Daniel)
Fixed logic for suspend-resume case.
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Harry Wentland <Harry.wentland@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1493421260-3146-1-git-send-email-dhinakaran.pandiyan@intel.com
Pandiyan, Dhinakaran [Fri, 21 Apr 2017 05:51:32 +0000 (22:51 -0700)]
drm/dp: Add DP MST helpers to atomically find and release vcpi slots
drm_dp_atomic_find_vcpi_slots() should be called from ->atomic_check() to
check there are sufficient vcpi slots for a mode and to add that to the
state. This should be followed by a call to drm_dp_mst_allocate_vcpi()
in ->atomic_commit() to initialize a struct vcpi for the port.
drm_dp_atomic_release_vcpi_slots() should be called from
->atomic_check() to release a port's vcpi slot allocation from the
state.
Drivers that do not make use of this atomic helper are expected to call
drm_dp_find_vcpi_slots() instead before calling
drm_dp_mst_allocate_vcpi().
v3: drm_dp_atomic_release_vcpi_slots() now needs to know how many slots
to release as we may not have a valid reference to port.
v2:
Added checks for verifying the port reference is valid
Moved get_mst_topology_state() into the helpers (Daniel)
Changed find_vcpi_slots() to not depend on current allocation
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Harry Wentland <Harry.wentland@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1492753893-3748-4-git-send-email-dhinakaran.pandiyan@intel.com
Pandiyan, Dhinakaran [Fri, 21 Apr 2017 05:51:31 +0000 (22:51 -0700)]
drm/dp: Introduce MST topology state to track available link bandwidth
Link bandwidth is shared between multiple display streams in DP MST
configurations. The DP MST topology manager structure maintains the
shared link bandwidth for a primary link directly connected to the GPU. For
atomic modesetting drivers, checking if there is sufficient link bandwidth
for a mode needs to be done during the atomic_check phase to avoid failed
modesets. Let's encapsulate the available link bw information in a
private state structure so that bw can be allocated and released atomically
for each of the ports sharing the primary link.
v3: WARN_ON() if connection_mutex is not held (Archit)
v2: Included kernel doc, moved state initialization and switched to
kmemdup() for allocation (Daniel)
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Harry Wentland <Harry.wentland@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1492753893-3748-3-git-send-email-dhinakaran.pandiyan@intel.com
Pandiyan, Dhinakaran [Fri, 21 Apr 2017 05:51:30 +0000 (22:51 -0700)]
drm: Add driver-private objects to atomic state
It is necessary to track states for objects other than connector, crtc
and plane for atomic modesets. But adding objects like DP MST link
bandwidth to drm_atomic_state would mean that a non-core object will be
modified by the core helper functions for swapping and clearing
it's state. So, lets add void * objects and helper functions that operate
on void * types to keep these objects and states private to the core.
Drivers can then implement specific functions to swap and clear states.
The other advantage having just void * for these objects in
drm_atomic_state is that objects of different types can be managed in the
same state array.
v7: Use __for_each_private_obj to define for_each_private_obj (Maarten)
v6: More kernel-doc to keep 0-day happy
v5: Remove more NULL checks (Maarten)
v4: Avoid redundant NULL checks when private_objs array is empty (Maarten)
v3: Macro alignment (Chris)
v2: Added docs and new iterator to filter private objects (Daniel)
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Harry Wentland <Harry.wentland@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1492753893-3748-2-git-send-email-dhinakaran.pandiyan@intel.com
Sean Paul [Thu, 4 May 2017 12:38:21 +0000 (08:38 -0400)]
Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux into drm-misc-next
Backmerging Dave's 'drm-for-v4.12' pull request now that it's landed. There are
a bunch of non-drm changes which are just random bits we hadn't yet picked up in
misc-next.
main drm pull request for 4.12 kernel
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/CAPM=9ty0jHgzG18zOr5CYODyTqZfH55kOCOFqNnXiWnTb_uNWw@mail.gmail.com
Chris Wilson [Wed, 29 Mar 2017 09:10:53 +0000 (10:10 +0100)]
drm/mm: Split up long running selftests with cond_resched()
Scatter a few cond_resched() in between phases of the drm_mm selftests
to try and prevent us incurring the wrath of the NMI watchdog.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170329091053.13837-1-chris@chris-wilson.co.uk
Shawn Guo [Tue, 11 Apr 2017 11:30:26 +0000 (19:30 +0800)]
drm: zte: add VGA driver support
It adds VGA driver support, which needs to configure corresponding VOU
interface in RGB_888 format, and thus the following changes are needed
on zx_vou.
- Rename the CSC block of Graphic Layer a bit to make it more specific,
and add CSC of Channel to support RGB output.
- Bypass Dither block for RGB output.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1491910226-7831-1-git-send-email-shawnguo@kernel.org
Shawn Guo [Thu, 6 Apr 2017 15:01:09 +0000 (23:01 +0800)]
dt-bindings: display: add support for ZTE VGA device
It adds bindings doc for ZTE VOU VGA output device.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1491490870-6330-4-git-send-email-shawnguo@kernel.org
Shawn Guo [Thu, 6 Apr 2017 15:01:08 +0000 (23:01 +0800)]
drm: zte: move CSC register definitions into a common header
The CSC (Color Space Conversion) block in VOU is used by not only
Graphic Layer (plane) but also channel (CRTC) module. Let's move
its register definitions into a common header, so that CRTC driver can
include it when needed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1491490870-6330-3-git-send-email-shawnguo@kernel.org
Shawn Guo [Thu, 6 Apr 2017 15:01:07 +0000 (23:01 +0800)]
drm: zte: do not enable clock auto-gating by default
Some VOU modules do not work well with clock auto-gating. For example,
VGA I2C bus will fail to read EDID data from monitor. Let's not enable
this feature by default, and leave it to the possible future low-power
optimization.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1491490870-6330-2-git-send-email-shawnguo@kernel.org
Gustavo Padovan [Thu, 27 Apr 2017 14:35:06 +0000 (11:35 -0300)]
drm/atomic: fix doc to use new name for commit types
Use "non-blocking" and "blocking" instead of old names.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170427143506.32650-1-gustavo@padovan.org
Jeffy Chen [Sat, 29 Apr 2017 12:39:07 +0000 (20:39 +0800)]
drm/rockchip: analogix_dp: Remove unused check and variables
Remove unused check and variables after:
drm/rockchip: Set line flag config register in vop_crtc_enable
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1493469547-2121-1-git-send-email-jeffy.chen@rock-chips.com
Jyri Sarha [Fri, 21 Apr 2017 09:51:13 +0000 (12:51 +0300)]
drm: Make drm_atomic_replace_property_blob_from_id() more generic
Change drm_atomic_replace_property_blob_from_id()'s first parameter
from drm_crtc to drm_device, so that the function can be used for other
drm_mode_objects too.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/851b8504c7f294a10645ba6f6d391ac9764068b7.1492768073.git.jsarha@ti.com
Jyri Sarha [Fri, 21 Apr 2017 09:51:12 +0000 (12:51 +0300)]
drm: drm_color_mgmt.h needs struct drm_crtc declaration
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/69c913b3ae3fc7235c059e08f58fb0a172d98cf8.1492768073.git.jsarha@ti.com
Dave Airlie [Mon, 1 May 2017 18:46:01 +0000 (04:46 +1000)]
Merge branch 'linux-4.12' of git://github.com/skeggsb/linux into drm-next
Some nouveau regression fixes.
* 'linux-4.12' of git://github.com/skeggsb/linux:
drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection
drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr()
drm/nouveau/kms: Increase max retries in scanout position queries.
drm/nouveau/bios/bitP: check that table is long enough for optional pointers
drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine
Mario Kleiner [Sat, 29 Apr 2017 04:11:30 +0000 (06:11 +0200)]
drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection
A missing u64 cast causes a 32-Bit wraparound from
4096 MiB to 0 MiB and therefore total 0 MiB VRAM detected
if card has 4096 Mib per FBP.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Wei Yongjun [Tue, 25 Apr 2017 14:36:42 +0000 (14:36 +0000)]
drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr()
The error return code PTR_ERR(mc) is always 0 since mc is
equal to 0 in this error handling case.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Mario Kleiner [Sun, 23 Apr 2017 23:59:34 +0000 (01:59 +0200)]
drm/nouveau/kms: Increase max retries in scanout position queries.
So far we only allowed for 1 retry and just failed the query
- and thereby high precision vblank timestamping - if we did
not get a reasonable result, as such a failure wasn't considered
all too horrible. There are a few NVidia gpu models out there which
may need a bit more than 1 retry to get a successful query result
under some conditions.
Since Linux 4.4 the update code for vblank counter and timestamp
in drm_update_vblank_count() changed so that the implementation
assumes that high precision vblank timestamping of a kms driver
either consistently succeeds or consistently fails for a given
video mode and encoder/connector combo. Iow. switching from success
to fail or vice versa on a modeset or connector change is ok, but
spurious temporary failure for a given setup can confuse the core
code and potentially cause bad miscounting of vblanks and confusion
or hangs in userspace clients which rely on vblank stuff, e.g.,
desktop compositors.
Therefore change the max retry count to a larger number - more than
any gpu so far is known to need to succeed, but still low enough
so that these queries which do also happen in vblank interrupt are
still fast enough to be not disastrously long if something would
go badly wrong with them.
As such sporadic retries only happen seldom even on affected gpu's,
this could mean a vblank irq could take a few dozen microseconds
longer every few hours of uptime -- better than a desktop compositor
randomly hanging every couple of hours or days of uptime in a hard
to reproduce manner.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 10 Apr 2017 22:25:22 +0000 (08:25 +1000)]
drm/nouveau/bios/bitP: check that table is long enough for optional pointers
Fixes OOB VBIOS accesses on some boards.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Tue, 4 Apr 2017 02:46:14 +0000 (22:46 -0400)]
drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Dave Airlie [Fri, 28 Apr 2017 19:50:27 +0000 (05:50 +1000)]
Merge tag 'drm-intel-next-fixes-2017-04-27' of git://anongit.freedesktop.org/git/drm-intel into drm-next
drm/i915 and gvt fixes for drm-next/v4.12
* tag 'drm-intel-next-fixes-2017-04-27' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915: Confirm the request is still active before adding it to the await
drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio
drm/i915/selftests: Allocate inode/file dynamically
drm/i915: Fix system hang with EI UP masked on Haswell
drm/i915: checking for NULL instead of IS_ERR() in mock selftests
drm/i915: Perform link quality check unconditionally during long pulse
drm/i915: Fix use after free in lpe_audio_platdev_destroy()
drm/i915: Use the right mapping_gfp_mask for final shmem allocation
drm/i915: Make legacy cursor updates more unsynced
drm/i915: Apply a cond_resched() to the saturated signaler
drm/i915: Park the signaler before sleeping
drm/i915/gvt: fix a bounds check in ring_id_to_context_switch_event()
drm/i915/gvt: Fix PTE write flush for taking runtime pm properly
drm/i915/gvt: remove some debug messages in scheduler timer handler
drm/i915/gvt: add mmio init for virtual display
drm/i915/gvt: use directly assignment for structure copying
drm/i915/gvt: remove redundant ring id check which cause significant CPU misprediction
drm/i915/gvt: remove redundant platform check for mocs load/restore
drm/i915/gvt: Align render mmio list to cacheline
drm/i915/gvt: cleanup some too chatty scheduler message
Dave Airlie [Fri, 28 Apr 2017 19:49:54 +0000 (05:49 +1000)]
Merge branch 'drm-vmwgfx-next' of git://people.freedesktop.org/~syeh/repos_linux into drm-next
trivial patch.
* 'drm-vmwgfx-next' of git://people.freedesktop.org/~syeh/repos_linux:
drm/vmwgfx: Convert macro to octal representation
Dave Airlie [Fri, 28 Apr 2017 19:48:45 +0000 (05:48 +1000)]
Merge branch 'for-upstream/mali-dp' of git://linux-arm.org/linux-ld into drm-next
Latest updates on Mali DP, adding support for colour management,
plane scaling and power management.
(these have been in -next for a while).
* 'for-upstream/mali-dp' of git://linux-arm.org/linux-ld:
drm: mali-dp: use div_u64 for expensive 64-bit divisions
drm: mali-dp: Check the mclk rate and allow up/down scaling
drm: mali-dp: Enable image enhancement when scaling
drm: mali-dp: Add plane upscaling support
drm/mali-dp: Add core_id file to the sysfs interface
drm: mali-dp: Add CTM support
drm: mali-dp: enable gamma support
drm: mali-dp: add malidp_crtc_state struct
drm: mali-dp: add custom reset hook for planes
drm: mali-dp: remove unused variable
drm: mali-dp: add atomic_print_state for planes
drm: mali-dp: Enable power management for the device.
drm: mali-dp: Update the state of all planes before re-enabling active CRTCs.
Andres Rodriguez [Wed, 26 Apr 2017 14:46:20 +0000 (10:46 -0400)]
dma-buf: avoid scheduling on fence status query v2
When a timeout of zero is specified, the caller is only interested in
the fence status.
In the current implementation, dma_fence_default_wait will always call
schedule_timeout() at least once for an unsignaled fence. This adds a
significant overhead to a fence status query.
Avoid this overhead by returning early if a zero timeout is specified.
v2: move early return after enable_signaling
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170426144620.3560-1-andresx7@gmail.com
Jeffy Chen [Thu, 27 Apr 2017 06:54:17 +0000 (14:54 +0800)]
drm/rockchip: Set line flag config register in vop_crtc_enable
We need to set vop config done after update line flag config, it's a
new requirement for chips newer than rk3368.
Since we would only use line flag irq for vact_end, let's move it to
vop_crtc_enable.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Acked-by: Mark Yao <mark.yao@rock-chips.com
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1493276057-4516-1-git-send-email-jeffy.chen@rock-chips.com
Arnd Bergmann [Tue, 25 Apr 2017 19:56:53 +0000 (21:56 +0200)]
drm: mali-dp: use div_u64 for expensive 64-bit divisions
On 32-bit machines, we can't divide 64-bit integers:
drivers/gpu/drm/arm/malidp_crtc.o: In function `malidp_crtc_atomic_check':
malidp_crtc.c:(.text.malidp_crtc_atomic_check+0x3c0): undefined reference to `__aeabi_uldivmod'
malidp_crtc.c:(.text.malidp_crtc_atomic_check+0x3dc): undefined reference to `__aeabi_uldivmod'
This calls the div_u64 function explicitly instead.
Fixes:
4cea4e9f6690 ("drm: mali-dp: Add plane upscaling support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Chris Wilson [Sat, 22 Apr 2017 08:15:37 +0000 (09:15 +0100)]
drm/i915: Confirm the request is still active before adding it to the await
Although we do check the completion-status of the request before
actually adding a wait on it (either to its submit fence or its
completion dma-fence), we currently do not check before adding it to the
dependency lists.
In fact, without checking for a completed request we may try to use the
signaler after it has been retired and its dependency tree freed:
[ 60.044057] BUG: KASAN: use-after-free in __list_add_valid+0x1d/0xd0 at addr
ffff880348c9e6a0
[ 60.044118] Read of size 8 by task gem_exec_fence/530
[ 60.044164] CPU: 1 PID: 530 Comm: gem_exec_fence Tainted: G E 4.11.0-rc7+ #46
[ 60.044226] Hardware name: ��������������������������������� ���������������������������������/���������������������������������, BIOS RYBDWi35.86A.0246.2
[ 60.044290] Call Trace:
[ 60.044337] dump_stack+0x4d/0x6a
[ 60.044383] kasan_object_err+0x21/0x70
[ 60.044435] kasan_report+0x225/0x4e0
[ 60.044488] ? __list_add_valid+0x1d/0xd0
[ 60.044534] ? kasan_kmalloc+0xad/0xe0
[ 60.044587] __asan_load8+0x5e/0x70
[ 60.044639] __list_add_valid+0x1d/0xd0
[ 60.044788] __i915_priotree_add_dependency+0x67/0x130 [i915]
[ 60.044895] i915_gem_request_await_request+0xa8/0x370 [i915]
[ 60.044974] i915_gem_request_await_dma_fence+0x129/0x140 [i915]
[ 60.045049] i915_gem_do_execbuffer.isra.37+0xb0a/0x26b0 [i915]
[ 60.045077] ? save_stack+0xb1/0xd0
[ 60.045105] ? save_stack_trace+0x1b/0x20
[ 60.045132] ? save_stack+0x46/0xd0
[ 60.045158] ? kasan_kmalloc+0xad/0xe0
[ 60.045184] ? __kmalloc+0xd8/0x670
[ 60.045229] ? drm_ioctl+0x359/0x640 [drm]
[ 60.045256] ? SyS_ioctl+0x41/0x70
[ 60.045330] ? i915_vma_move_to_active+0x540/0x540 [i915]
[ 60.045360] ? tty_insert_flip_string_flags+0xa1/0xf0
[ 60.045387] ? tty_flip_buffer_push+0x63/0x70
[ 60.045414] ? remove_wait_queue+0xa9/0xc0
[ 60.045441] ? kasan_unpoison_shadow+0x35/0x50
[ 60.045467] ? kasan_kmalloc+0xad/0xe0
[ 60.045494] ? kasan_check_write+0x14/0x20
[ 60.045568] i915_gem_execbuffer2+0xdb/0x2a0 [i915]
[ 60.045616] drm_ioctl+0x359/0x640 [drm]
[ 60.045705] ? i915_gem_execbuffer+0x5a0/0x5a0 [i915]
[ 60.045751] ? drm_version+0x150/0x150 [drm]
[ 60.045778] ? compat_start_thread+0x60/0x60
[ 60.045805] ? plist_del+0xda/0x1a0
[ 60.045833] do_vfs_ioctl+0x12e/0x910
[ 60.045860] ? ioctl_preallocate+0x130/0x130
[ 60.045886] ? pci_mmcfg_check_reserved+0xc0/0xc0
[ 60.045913] ? vfs_write+0x196/0x240
[ 60.045939] ? __fget_light+0xa7/0xc0
[ 60.045965] SyS_ioctl+0x41/0x70
[ 60.045991] entry_SYSCALL_64_fastpath+0x17/0x98
[ 60.046017] RIP: 0033:0x7feb2baefc47
[ 60.046042] RSP: 002b:
00007fff56d28e58 EFLAGS:
00000246 ORIG_RAX:
0000000000000010
[ 60.046075] RAX:
ffffffffffffffda RBX:
00007fff56d290a8 RCX:
00007feb2baefc47
[ 60.046102] RDX:
00007fff56d29050 RSI:
00000000c0406469 RDI:
0000000000000003
[ 60.046129] RBP:
00007fff56d29050 R08:
000055ecc4cd27d0 R09:
00007feb2bda8600
[ 60.046154] R10:
0000000000000073 R11:
0000000000000246 R12:
00000000c0406469
[ 60.046177] R13:
0000000000000003 R14:
000000000000000f R15:
0000000000000099
[ 60.046203] Object at
ffff880348c9e680, in cache i915_dependency size: 64
[ 60.046225] Allocated:
[ 60.046246] PID = 530
[ 60.046269] save_stack_trace+0x1b/0x20
[ 60.046292] save_stack+0x46/0xd0
[ 60.046318] kasan_kmalloc+0xad/0xe0
[ 60.046343] kasan_slab_alloc+0x12/0x20
[ 60.046368] kmem_cache_alloc+0xab/0x650
[ 60.046445] i915_gem_request_await_request+0x88/0x370 [i915]
[ 60.046559] i915_gem_request_await_dma_fence+0x129/0x140 [i915]
[ 60.046705] i915_gem_do_execbuffer.isra.37+0xb0a/0x26b0 [i915]
[ 60.046849] i915_gem_execbuffer2+0xdb/0x2a0 [i915]
[ 60.046936] drm_ioctl+0x359/0x640 [drm]
[ 60.046987] do_vfs_ioctl+0x12e/0x910
[ 60.047038] SyS_ioctl+0x41/0x70
[ 60.047090] entry_SYSCALL_64_fastpath+0x17/0x98
[ 60.047139] Freed:
[ 60.047179] PID = 530
[ 60.047223] save_stack_trace+0x1b/0x20
[ 60.047269] save_stack+0x46/0xd0
[ 60.047317] kasan_slab_free+0x72/0xc0
[ 60.047366] kmem_cache_free+0x39/0x160
[ 60.047512] i915_gem_request_retire+0x83f/0x930 [i915]
[ 60.047657] i915_gem_request_alloc+0x166/0x600 [i915]
[ 60.047799] i915_gem_do_execbuffer.isra.37+0xad8/0x26b0 [i915]
[ 60.047897] i915_gem_execbuffer2+0xdb/0x2a0 [i915]
[ 60.047942] drm_ioctl+0x359/0x640 [drm]
[ 60.047968] do_vfs_ioctl+0x12e/0x910
[ 60.047993] SyS_ioctl+0x41/0x70
[ 60.048019] entry_SYSCALL_64_fastpath+0x17/0x98
[ 60.048044] Memory state around the buggy address:
[ 60.048066]
ffff880348c9e580: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[ 60.048105]
ffff880348c9e600: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[ 60.048138] >
ffff880348c9e680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 60.048170] ^
[ 60.048191]
ffff880348c9e700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[ 60.048225]
ffff880348c9e780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
Note to hit the use-after-free requires us to be passed back a request
via a fence-array, that is from explicit fencing accumulated into a
sync-file fence-array.
Fixes:
52e542090701 ("drm/i915/scheduler: Record all dependencies upon request construction")
Testcase: igt/gem_exec_fence/expired-history
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170422081537.6468-1-chris@chris-wilson.co.uk
(cherry picked from commit
ade0b0c965f59176daddbef9c4717354034f9bce)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Fri, 21 Apr 2017 13:58:15 +0000 (14:58 +0100)]
drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio
The busy-spin, as the first stage of intel_wait_for_register(), is
currently under suspicion for causing:
[ 62.034926] NMI watchdog: Watchdog detected hard LOCKUP on cpu 1
[ 62.034928] Modules linked in: i2c_dev i915 intel_gtt drm_kms_helper prime_numbers
[ 62.034932] CPU: 1 PID: 183 Comm: kworker/1:2 Not tainted 4.11.0-rc7+ #471
[ 62.034933] Hardware name: / , BIOS PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015
[ 62.034934] Workqueue: pm pm_runtime_work
[ 62.034936] task:
ffff880275a04ec0 task.stack:
ffffc900002d8000
[ 62.034936] RIP: 0010:__intel_wait_for_register_fw+0x77/0x1a0 [i915]
[ 62.034937] RSP: 0018:
ffffc900002dbc38 EFLAGS:
00000082
[ 62.034939] RAX:
ffffc90003530094 RBX:
0000000000130094 RCX:
0000000000000001
[ 62.034940] RDX:
00000000000000a1 RSI:
ffff88027fd15e58 RDI:
0000000000000000
[ 62.034941] RBP:
ffffc900002dbc78 R08:
0000000000000002 R09:
0000000000000000
[ 62.034942] R10:
ffffc900002dbc18 R11:
ffff880276429dd0 R12:
ffff8802707c0000
[ 62.034943] R13:
00000000000000a0 R14:
0000000000000000 R15:
00000000fffefc10
[ 62.034945] FS:
0000000000000000(0000) GS:
ffff88027fd00000(0000) knlGS:
0000000000000000
[ 62.034945] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 62.034947] CR2:
00007ffd3cd98ff8 CR3:
0000000274c19000 CR4:
00000000001006e0
[ 62.034947] Call Trace:
[ 62.034948] intel_wait_for_register+0x77/0x140 [i915]
[ 62.034949] vlv_suspend_complete+0x23/0x5b0 [i915]
[ 62.034950] intel_runtime_suspend+0x16c/0x2a0 [i915]
[ 62.034950] pci_pm_runtime_suspend+0x50/0x180
[ 62.034951] ? pci_pm_runtime_resume+0xa0/0xa0
[ 62.034952] __rpm_callback+0xc5/0x210
[ 62.034953] rpm_callback+0x1f/0x80
[ 62.034953] ? pci_pm_runtime_resume+0xa0/0xa0
[ 62.034954] rpm_suspend+0x118/0x580
[ 62.034955] pm_runtime_work+0x64/0x90
[ 62.034956] process_one_work+0x1bb/0x3e0
[ 62.034956] worker_thread+0x46/0x4f0
[ 62.034957] ? __schedule+0x18b/0x610
[ 62.034958] kthread+0xff/0x140
[ 62.034958] ? process_one_work+0x3e0/0x3e0
[ 62.034959] ? kthread_create_on_node+
and related hard lockups in CI for byt and bsw.
Note this effectively reverts commits
41ce405e6894 and
b27366958869
("drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()")
v2: Convert bool allow into a u32 mask for clarity and repeat the
comment on vlv rc6 timing to justify the 3ms timeout used for the wait (Ville)
Fixes:
41ce405e6894 ("drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()")
Fixes:
b27366958869 ("drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100718
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Tomi Sarvela <tomi.p.sarvela@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170421135815.11897-1-chris@chris-wilson.co.uk
Tested-by: Tomi Sarvela <tomi.p.sarvela@intel.com>
(cherry picked from commit
3dd14c04d77d7d702de5aa7157df4cc9417329f3)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Wed, 19 Apr 2017 09:41:17 +0000 (10:41 +0100)]
drm/i915/selftests: Allocate inode/file dynamically
Avoid having too large a stack by creating the fake struct inode/file on
the heap instead.
drivers/gpu/drm/i915/selftests/mock_drm.c: In function 'mock_file':
drivers/gpu/drm/i915/selftests/mock_drm.c:46:1: error: the frame size of 1328 bytes is larger than 1280 bytes [-Werror=frame-larger-than=]
drivers/gpu/drm/i915/selftests/mock_drm.c: In function 'mock_file_free':
drivers/gpu/drm/i915/selftests/mock_drm.c:54:1: error: the frame size of 1312 bytes is larger than 1280 bytes [-Werror=frame-larger-than=]
Reported-by: Arnd Bergmann <arnd@arndb.de>
Fixes:
66d9cb5d805a ("drm/i915: Mock the GEM device for self-testing")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20170419094143.16922-2-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit
2310b3c952c5dc56c2e08f71b907b8e23ab3270d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Mika Kuoppala [Thu, 13 Apr 2017 11:15:27 +0000 (14:15 +0300)]
drm/i915: Fix system hang with EI UP masked on Haswell
Previously with commit
a9c1f90c8e17
("drm/i915: Don't mask EI UP interrupt on IVB|SNB") certain,
seemingly unrelated bit (GEN6_PM_RP_UP_EI_EXPIRED) was needed
to be unmasked for IVB and SNB in order to prevent system hang
with chained batchbuffers.
Our CI was seeing incomplete results with tests that used
chained batches and it was found out that HSW needs to have this
same bit unmasked to reliably survive chained batches.
Always unmask GEN6_PM_RP_UP_EI_EXPIRED on Haswell to
prevent system hang with batch chaining.
Testcase: igt/gem_exec_fence/nb-await-default
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100672
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1492082127-29007-1-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit
3396a273851c14634b98bb27be37508b06df94f4)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Dan Carpenter [Thu, 13 Apr 2017 19:52:17 +0000 (22:52 +0300)]
drm/i915: checking for NULL instead of IS_ERR() in mock selftests
i915_gem_request_alloc() uses error pointers. It never returns NULLs.
Fixes:
0daf0113cff6 ("drm/i915: Mock infrastructure for request emission")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170413195217.GA26108@mwanda
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit
be02f7556447a0dee672acb5e462f03377b98ae8)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Ville Syrjälä [Wed, 12 Apr 2017 19:30:17 +0000 (22:30 +0300)]
drm/i915: Perform link quality check unconditionally during long pulse
Apparently some DP sinks are a little nuts and cause HPD to drop
intermittently during modesets. This happens eg. on an ASUS PB287Q.
In oder to recover from this we can't really use the previous
connector status to determine if the link needs retraining, so let's
just ignore that piece of information and do the retrain
unconditionally. We do of course still check whether the link is
supposed to be running or not.
To actually get read out the EDID and update things properly we
also need to nuke the goto out added by commit
7d23e3c37bb3
("drm/i915: Cleaning up intel_dp_hpd_pulse"). I'm actually not sure
why that was there. Perhaps to avoid an EDID read if the connector
status didn't appear to change, but that sort of thing is quite racy
and would have failed anyway if we failed to keep up with the
hotplugs (if we missed the HPD down in between two HPD ups). And
now that we take this codepath unconditionally we definitely need
to drop the goto as otherwise we would never do the EDID read.
v2: Drop the goto that made us skip EDID reads entirely. Doh!
v3: Rebase due to locking changes
s/apparely/apparently/ in the comment (Chris)
Cc: stable@vger.kernel.org
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Reported-by: Palmer Dabbelt <palmer@dabbelt.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99766
References: https://lists.freedesktop.org/archives/intel-gfx/2017-February/119779.html
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170412193017.21029-1-ville.syrjala@linux.intel.com
(cherry picked from commit
1a36147bb93921651f7fbd7a6e522da6c349081b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Wed, 12 Apr 2017 08:02:51 +0000 (09:02 +0100)]
drm/i915: Fix use after free in lpe_audio_platdev_destroy()
[31908.547136] BUG: KASAN: use-after-free in intel_lpe_audio_teardown+0x78/0xb0 [i915] at addr
ffff8801f7788358
[31908.547297] Read of size 8 by task drv_selftest/3781
[31908.547405] CPU: 0 PID: 3781 Comm: drv_selftest Tainted: G BU W 4.10.0+ #451
[31908.547553] Hardware name: / , BIOS PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015
[31908.547682] Call Trace:
[31908.547772] dump_stack+0x68/0x9f
[31908.547857] kasan_object_err+0x1c/0x70
[31908.547947] kasan_report_error+0x1f1/0x4f0
[31908.548038] ? kfree+0xaa/0x170
[31908.548121] kasan_report+0x34/0x40
[31908.548211] ? klist_children_get+0x20/0x30
[31908.548472] ? intel_lpe_audio_teardown+0x78/0xb0 [i915]
[31908.548567] __asan_load8+0x5e/0x70
[31908.548824] intel_lpe_audio_teardown+0x78/0xb0 [i915]
[31908.549080] intel_audio_deinit+0x28/0x80 [i915]
[31908.549315] i915_driver_unload+0xe4/0x360 [i915]
[31908.549551] ? i915_driver_load+0x1d70/0x1d70 [i915]
[31908.549651] ? trace_hardirqs_on+0xd/0x10
[31908.549885] i915_pci_remove+0x23/0x30 [i915]
[31908.549978] pci_device_remove+0x5c/0x100
[31908.550069] device_release_driver_internal+0x1db/0x2e0
[31908.550165] driver_detach+0x68/0xc0
[31908.550256] bus_remove_driver+0x8b/0x150
[31908.550346] driver_unregister+0x3e/0x60
[31908.550439] pci_unregister_driver+0x1d/0x110
[31908.550531] ? find_module_all+0x7a/0xa0
[31908.550791] i915_exit+0x1a/0x87 [i915]
[31908.550881] SyS_delete_module+0x264/0x2c0
[31908.550971] ? free_module+0x430/0x430
[31908.551064] ? trace_hardirqs_off_caller+0x16/0x110
[31908.551159] ? trace_hardirqs_on_caller+0x16/0x280
[31908.551256] ? trace_hardirqs_on_thunk+0x1a/0x1c
[31908.551350] entry_SYSCALL_64_fastpath+0x1c/0xb1
[31908.551440] RIP: 0033:0x7f1d67312ec7
[31908.551520] RSP: 002b:
00007ffebe34e888 EFLAGS:
00000206 ORIG_RAX:
00000000000000b0
[31908.551650] RAX:
ffffffffffffffda RBX:
ffffffff811123f6 RCX:
00007f1d67312ec7
[31908.551743] RDX:
0000000000000000 RSI:
0000000000000800 RDI:
0000560d0af476b8
[31908.551837] RBP:
ffff880233d87f98 R08:
0000000000000000 R09:
00007ffebe34e8b8
[31908.551930] R10:
00007f1d68adf8c0 R11:
0000000000000206 R12:
0000000000000000
[31908.552023] R13:
0000560d0af46440 R14:
0000000000000034 R15:
00007ffebe34d860
[31908.552121] ? trace_hardirqs_off_caller+0x16/0x110
[31908.552217] Object at
ffff8801f7788000, in cache kmalloc-2048 size: 2048
[31908.552306] Allocated:
[31908.552377] PID = 3781
[31908.552456] save_stack_trace+0x16/0x20
[31908.552539] kasan_kmalloc+0xee/0x190
[31908.552627] __kmalloc+0xdb/0x1b0
[31908.552713] platform_device_alloc+0x27/0x90
[31908.552804] platform_device_register_full+0x36/0x220
[31908.553066] intel_lpe_audio_init+0x41e/0x570 [i915]
[31908.553320] intel_audio_init+0xd/0x40 [i915]
[31908.553552] i915_driver_load+0x13f5/0x1d70 [i915]
[31908.553788] i915_pci_probe+0x65/0xe0 [i915]
[31908.553881] pci_device_probe+0xda/0x140
[31908.553969] driver_probe_device+0x400/0x660
[31908.554058] __driver_attach+0x11c/0x120
[31908.554147] bus_for_each_dev+0xe6/0x150
[31908.554237] driver_attach+0x26/0x30
[31908.554325] bus_add_driver+0x26b/0x3b0
[31908.554412] driver_register+0xce/0x190
[31908.554502] __pci_register_driver+0xaf/0xc0
[31908.554589] 0xffffffffa0550063
[31908.554675] do_one_initcall+0x8b/0x1e0
[31908.554764] do_init_module+0x102/0x325
[31908.554852] load_module+0x3aad/0x45e0
[31908.554944] SyS_finit_module+0x169/0x1a0
[31908.555033] entry_SYSCALL_64_fastpath+0x1c/0xb1
[31908.555119] Freed:
[31908.555188] PID = 3781
[31908.555266] save_stack_trace+0x16/0x20
[31908.555349] kasan_slab_free+0xb0/0x180
[31908.555436] kfree+0xaa/0x170
[31908.555520] platform_device_release+0x76/0x80
[31908.555610] device_release+0x45/0xe0
[31908.555698] kobject_put+0x11f/0x260
[31908.555785] put_device+0x12/0x20
[31908.555871] platform_device_unregister+0x1b/0x20
[31908.556135] intel_lpe_audio_teardown+0x5c/0xb0 [i915]
[31908.556390] intel_audio_deinit+0x28/0x80 [i915]
[31908.556622] i915_driver_unload+0xe4/0x360 [i915]
[31908.556858] i915_pci_remove+0x23/0x30 [i915]
[31908.556948] pci_device_remove+0x5c/0x100
[31908.557037] device_release_driver_internal+0x1db/0x2e0
[31908.557129] driver_detach+0x68/0xc0
[31908.557217] bus_remove_driver+0x8b/0x150
[31908.557304] driver_unregister+0x3e/0x60
[31908.557394] pci_unregister_driver+0x1d/0x110
[31908.557653] i915_exit+0x1a/0x87 [i915]
[31908.557741] SyS_delete_module+0x264/0x2c0
[31908.557834] entry_SYSCALL_64_fastpath+0x1c/0xb1
[31908.557919] Memory state around the buggy address:
[31908.558005]
ffff8801f7788200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[31908.558127]
ffff8801f7788280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[31908.558255] >
ffff8801f7788300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[31908.558374] ^
[31908.558467]
ffff8801f7788380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[31908.558595]
ffff8801f7788400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
v2: Just leak the memory (8 bytes) as freeing it ourselves is not safe,
and we need to coordinate a proper fix in platform_device itself.
Fixes:
eef57324d926 ("drm/i915: setup bridge for HDMI LPE audio driver")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99952
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Jerome Anand <jerome.anand@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20170412080251.30648-1-chris@chris-wilson.co.uk
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit
48ae80741da4b8a26b6df0f765713912bc7cc480)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Wed, 5 Apr 2017 22:15:14 +0000 (23:15 +0100)]
drm/i915: Use the right mapping_gfp_mask for final shmem allocation
Many sightings report the greater prevalence of allocation failures.
This is all due to the incorrect use of mapping_gfp_constraint(), so
remove it in favour of just querying the mapping_gfp_mask() which are
the exact gfp_t we wanted in the first place.
We still do expect a higher chance of reporting ENOMEM, as that is the
intention of using __GFP_NORETRY -- to fail rather than oom after having
reclaimed from our bo caches, and having done a direct|kswapd reclaim
pass.
Reported-by: Jason Ekstrand <jason.ekstrand@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100594
Fixes:
24f8e00a8a2e ("drm/i915: Prefer to report ENOMEM rather than incur the oom for gfx allocations")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170405221514.23251-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit
b268d9fe0f10544f5f7a1b7015e2b97075e6215d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Ville Syrjälä [Wed, 29 Mar 2017 14:21:23 +0000 (17:21 +0300)]
drm/i915: Make legacy cursor updates more unsynced
We're clearing the legacy_cursor_update flag before calling
drm_atomic_helper_setup_commit() which means the helper will
wait for the flip to complete before cleaning up the framebuffers.
That's not what we want for the legacy cursor, so let's clear
the flag after setting up the commit.
Also toss in a FIXME about solving these problems in a nicer
way using the fabled vblank workers.
v2: Also unsync with legacy page flips
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
Cc: Rafael Ristovski <rafael.ristovski@gmail.com>
Fixes:
a5509abda48e ("drm/i915: Fix legacy cursor vs. watermarks for ILK-BDW")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170329142123.5923-1-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
(cherry picked from commit
895203044067af64400cedbc055898bcec98d102)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Tue, 4 Apr 2017 12:05:31 +0000 (13:05 +0100)]
drm/i915: Apply a cond_resched() to the saturated signaler
If the engine is continually completing nops, we can saturate the
signaler and keep it working indefinitely. This angers the NMI watchdog!
A good example is to disable semaphores on snb and run igt/gem_exec_nop -
the parallel, multi-engine workloads are more than sufficient to hog the
CPU, preventing the system from even processing ICMP echo replies.
v2: Tvrtko dug into cond_resched() on x86 and found that it only
depended upon preempt_count and not tif_need_resched() - which means
that we would always call schedule() at that point.
Fixes:
c81d46138da6 ("drm/i915: Convert trace-irq to the breadcrumb waiter")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170404120531.10737-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
(cherry picked from commit
a7980a640cbd339aa80f406d1786a275a2c320bc)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Mon, 3 Apr 2017 10:51:24 +0000 (11:51 +0100)]
drm/i915: Park the signaler before sleeping
If the signal to park arrives before we sleep, then we need to check
kthread_should_park() before sleeping to avoid missing the signal.
Otherwise, if the signal arrives whilst we are processing completed
requests, we will reset the current->state back to TASK_INTERRUPTIBLE
and so miss the wakeup.
Fixes:
fe3288b5da2c ("drm/i915: Park the breadcrumbs signaler across a GPU reset")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170403105124.8969-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
(cherry picked from commit
b1becb88268beb72df6495e35d3d76c138d215bb)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Jani Nikula [Wed, 26 Apr 2017 09:19:55 +0000 (12:19 +0300)]
Merge tag 'gvt-next-fixes-2017-04-20' of https://github.com/01org/gvt-linux into drm-intel-next-fixes
gvt-next-fixes-2017-04-20
- some code optimization from Changbin
- debug message cleanup after QoS merge
- misc fixes for display mmio init, reset vgpu warning, etc.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Mihail Atanassov [Mon, 13 Feb 2017 15:09:01 +0000 (15:09 +0000)]
drm: mali-dp: Check the mclk rate and allow up/down scaling
When downscaling, mclk needs to be sufficiently higher than pxlclk in
order to be able to fetch the higher-resolution data and produce output
pixels. When not scaling, or when upscaling, mclk can be equal to
pxlclk. Since the driver doesn't control mclk, just ensure that the
requirement is satisfied with the current clock rate.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Mihail Atanassov [Mon, 6 Feb 2017 12:20:56 +0000 (12:20 +0000)]
drm: mali-dp: Enable image enhancement when scaling
Apply image enhacement when we are upscaling by a factor of 2
or more in either direction.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Mihail Atanassov [Mon, 13 Feb 2017 15:14:05 +0000 (15:14 +0000)]
drm: mali-dp: Add plane upscaling support
Enable the scaling engine for upscaling a single plane using the polyphase
scaler. No image enhancement support or downscaling yet*, and composition
result scaling is not implemented.
* Downscaling a plane requires mclk > pxlclk.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Liviu Dudau [Wed, 5 Apr 2017 10:55:26 +0000 (11:55 +0100)]
drm/mali-dp: Add core_id file to the sysfs interface
Add a core_id file in the driver's sysfs directory,
exposing the hardware CORE ID. This is useful to allow
userspace to discover the hardware version used.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Mihail Atanassov [Mon, 13 Feb 2017 12:49:03 +0000 (12:49 +0000)]
drm: mali-dp: Add CTM support
All DPs have a COLORADJ matrix which is applied prior to output gamma.
Attach that to the CTM property. Also, ensure the input CTM's coefficients
can fit in the DP registers' Q3.12 format.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Mihail Atanassov [Wed, 1 Feb 2017 14:48:50 +0000 (14:48 +0000)]
drm: mali-dp: enable gamma support
Add gamma via the DRM GAMMA_LUT/GAMMA_LUT_SIZE CRTC
properties. The expected LUT size is 4096 in order
to produce as accurate a set of segments as possible.
This version uses only the green channel's gamma curve
to set the hardware curve on DP550/650. For the sake of
simplicity, it uses the same table of coefficients for
all 3 curves on DP500.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Mihail Atanassov [Wed, 1 Feb 2017 14:48:49 +0000 (14:48 +0000)]
drm: mali-dp: add malidp_crtc_state struct
Add a custom CRTC state struct to enable storing driver's private
state. This patch only adds the base drm_crtc_state struct and
the atomic functions that handle it.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Mihail Atanassov [Thu, 1 Dec 2016 12:19:58 +0000 (12:19 +0000)]
drm: mali-dp: add custom reset hook for planes
Now that we are using a custom plane state in mali-dp, we need a
bespoke reset that takes into account the larger structure.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
[Updated commit message]
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Arnd Bergmann [Tue, 28 Mar 2017 14:07:58 +0000 (16:07 +0200)]
drm: mali-dp: remove unused variable
The newly introduced function causes a harmless build warning:
drivers/gpu/drm/arm/malidp_planes.c: In function 'malidp_plane_atomic_print_state':
drivers/gpu/drm/arm/malidp_planes.c:98:23: error: unused variable 'mp' [-Werror=unused-variable]
The variable serves no purpose here and can be removed.
Fixes:
242f43b69c61 ("drm: mali-dp: add atomic_print_state for planes")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Mihail Atanassov [Mon, 23 Jan 2017 15:12:02 +0000 (15:12 +0000)]
drm: mali-dp: add atomic_print_state for planes
Add function to dump the state of the plane.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Liviu Dudau [Wed, 22 Mar 2017 10:44:57 +0000 (10:44 +0000)]
drm: mali-dp: Enable power management for the device.
Enable runtime and system Power Management. Clocks are now managed
from malidp_crtc_{enable,disable} functions. Suspend-to-RAM tested
as working on Juno.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Liviu Dudau [Wed, 22 Mar 2017 10:39:48 +0000 (10:39 +0000)]
drm: mali-dp: Update the state of all planes before re-enabling active CRTCs.
Mali DP needs to have all the planes that are becoming inactive in the
new state disabled before re-enabling the active CRTC, otherwise we
start streaming out data from old pointers in memory.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Øyvind A. Holm [Mon, 3 Apr 2017 20:06:24 +0000 (22:06 +0200)]
drm/vmwgfx: Convert macro to octal representation
Change "S_IRUSR | S_IWUSR" to "0600", it's easier to parse mentally.
This change should be part of commit
50f837371dd9 ("drm/vmwgfx: Revert
"drm/vmwgfx: Replace numeric parameter like 0444 with macro""), but the
patch was truncated somewhere in the patch route, so add the missing
change. Extract from the original commit message:
commit
50f837371dd9aea5470c06d5d10bc9ca3e8155b6
Author: Øyvind A. Holm <sunny@sunbase.org>
Date: Thu Mar 23 14:54:48 2017 -0700
drm/vmwgfx: Revert "drm/vmwgfx: Replace numeric parameter like 0444
with macro"
This reverts commit
2d8e60e8b074 ("drm/vmwgfx: Replace numeric
parameter like 0444 with macro")
The commit belongs to the series of 1285 patches sent to LKML on
2016-08-02, it changes the representation of file permissions from
the octal value "0600" to "S_IRUSR | S_IWUSR".
The general consensus was that the changes does not increase
readability, quite the opposite; 0600 is easier to parse mentally
than S_IRUSR | S_IWUSR.
Signed-off-by: Øyvind A. Holm <sunny@sunbase.org>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Clint Taylor [Thu, 20 Apr 2017 15:47:43 +0000 (08:47 -0700)]
drm/cec: Add CEC over Aux register definitions
Adding DPCD register definitions from the DP 1.3 specification for CEC
over AUX support.
V2: Add DP_ prefix to all defines.
V3: missed prefixes from the ESI1 defines
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1492703263-11494-1-git-send-email-clinton.a.taylor@intel.com
Dave Airlie [Fri, 21 Apr 2017 03:51:59 +0000 (13:51 +1000)]
Merge tag 'drm-misc-next-fixes-2017-04-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next
drm-misc-next-fixes-2017-04-20
Core changes:
- Maintain sti via drm-misc (Vincent)
- Rename dma_buf_ops->kmap_* to avoid naming collision (Logan)
Driver changes:
- Fix UHD displays on stih407 (Vincent)
- Fix uninitialized var return in atmel-hlcdc (Dan)
* tag 'drm-misc-next-fixes-2017-04-20' of git://anongit.freedesktop.org/git/drm-misc:
dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro
drm: atmel-hlcdc: Uninitialized return in atmel_hlcdc_create_outputs()
drm/sti: fix GDP size to support up to UHD resolution
MAINTAINERS: add drm/sti driver into drm-misc
Navare, Manasi D [Mon, 3 Apr 2017 22:51:10 +0000 (15:51 -0700)]
drm: Add DPCD definitions for DP 1.4 DSC feature
Display stream compression is supported on DP 1.4 DP
devices. This patch adds the corersponding DPCD
register definitions for DSC.
v4:
* Add DSC Enable DPCD register def (Ander)
v3:
* Add some SHIFTS and MASKS for uniformity (Jani Nikula)
v2:
* Rebased on drm-tip
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1491259870-25613-1-git-send-email-manasi.d.navare@intel.com
Romain Perier [Thu, 20 Apr 2017 09:04:34 +0000 (14:34 +0530)]
drm: dw-hdmi: gate audio clock from the I2S enablement callbacks
Currently, the audio sampler clock is enabled from dw_hdmi_setup() at
step E. and is kept enabled for later use. This clock should be enabled
and disabled along with the actual audio stream and not always on (that
is bad for PM). Furthermore, as described by the datasheet, the I2S
variant needs to gate/ungate the clock when the stream is
enabled/disabled.
This commit adds a parameter to hdmi_audio_enable_clk() that controls
when the audio sample clock must be enabled or disabled. Then, it adds
the call to this function from dw_hdmi_i2s_audio_enable() and
dw_hdmi_i2s_audio_disable().
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Romain Perier <romain.perier@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170414083113.4255-3-romain.perier@collabora.com
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Romain Perier [Fri, 14 Apr 2017 08:31:12 +0000 (10:31 +0200)]
drm: dw-hdmi: add specific I2S and AHB functions for stream handling
Currently, CTS+N is forced to zero as a workaround of the IP block for
i.MX platforms. This is requested in the datasheet of the corresponding
IP for AHB mode only. However, we have seen that it introduces glitches
or delays when playing a sound on HDMI for I2S mode. This proves that we
cannot keep the current functions for handling audio stream as-is if
these contain workaround that are specific to a mode.
This commit introduces two callbacks, one for each variant.
dw_hdmi_setup defines the right function depending on the detected
variant. Then, the exported functions dw_hdmi_audio_enable and
dw_hdmi_audio_disable calls the corresponding callbacks
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Romain Perier <romain.perier@collabora.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170414083113.4255-2-romain.perier@collabora.com
Logan Gunthorpe [Wed, 19 Apr 2017 19:36:10 +0000 (13:36 -0600)]
dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro
Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
in highmem.h, the former can be aliased if any dma-buf user includes
that header.
I'm personally trying to include highmem.h inside scatterlist.h and this
breaks the dma-buf code proper.
Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
To maintain consistency I've renamed all four of kmap* and kunmap* to be
map* and unmap*. (Even though only kmap_atomic presently conflicts.)
[1] https://www.spinics.net/lists/target-devel/msg15070.html
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1492630570-879-1-git-send-email-logang@deltatee.com
Dave Airlie [Thu, 20 Apr 2017 03:19:34 +0000 (13:19 +1000)]
Merge tag 'sunxi-drm-for-4.12' of https://git./linux/kernel/git/mripard/linux into drm-next
Allwinner DRM changes for 4.12
Not any functional changes, but a lot of preliminary rework in order to
support multiple display pipelines.
* tag 'sunxi-drm-for-4.12' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (26 commits)
MAINTAINERS: Add sun4i-drm git repo
drm/sun4i: Pass pointer for underlying backend into layer init
drm/sun4i: Pass pointers for associated backend and tcon into crtc init
drm/sun4i: tv: Get tcon and backend pointers from associated crtc
drm/sun4i: Use embedded tcon pointer to get the tcon's output port node
drm/sun4i: Fix tcon channel 0 comment about backporch = backporch + hsync
drm/sun4i: Fix TCON clock and regmap initialization sequence
drm/sun4i: Grab reserved memory region
drm/sun4i: Add backend and tcon pointers to sun4i_crtc
drm/sun4i: Add backend pointer to sun4i_layer
drm/sun4i: rgb: Pass tcon pointer when initializing RGB encoder
drm/sun4i: tv: Switch to drm_of_find_possible_crtcs
drm/sun4i: Drop hardcoded .possible_crtcs values from layers
drm/sun4i: Drop primary layer pointer from sun4i_drv
drm/sun4i: Initialize crtc from tcon bind function
drm/sun4i: Move layers from sun4i_drv to sun4i_crtc
drm/sun4i: Add end of list element for sun4i_layers_init's returned list
drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node
drm/sun4i: Make sunxi_rgb2yuv_coef constant
drm/sun4i: Make sun4i_crtc_init return ERR_PTR style error codes
...
Dave Airlie [Wed, 19 Apr 2017 01:07:14 +0000 (11:07 +1000)]
Merge tag 'v4.11-rc7' into drm-next
Backmerge Linux 4.11-rc7 from Linus tree, to fix some
conflicts that were causing problems with the rerere cache
in drm-tip.
Eric Anholt [Mon, 27 Mar 2017 23:10:25 +0000 (16:10 -0700)]
drm/vc4: Allow using more than 256MB of CMA memory.
Until now, we've had to limit Raspberry Pi to 256MB of CMA memory to
keep from triggering the hardware addressing bug between the tile
binner and the tile alloc memory (where the top 4 bits come from the
tile state data array's address).
To work around that and allow more memory to be reserved for graphics,
allocate a single BO to store tile state data arrays and tile
alloc/overflow memory while the GPU is active, and make sure that that
one BO doesn't happen to cross a 256MB boundary. With that in place,
we can allocate textures and shaders anywhere in system memory (still
contiguous, of course).
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170327231025.19391-1-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Eric Anholt [Mon, 17 Apr 2017 16:26:03 +0000 (09:26 -0700)]
drm/vc4: Fix refcounting of runtime PM get if it errors out.
We were returning without decrementing if the error happened, meaning
that at the next submit we wouldn't try to bring up the power domain.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170417162603.12726-1-eric@anholt.net
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Boris Brezillon [Tue, 11 Apr 2017 16:39:25 +0000 (18:39 +0200)]
drm/vc4: Add runtime PM support to the HDMI encoder driver
The HDMI driver is currently enabling all clocks at probe time and
keeps the power-domain connected to the HDMI encoder enabled.
Move all activation code to vc4_hdmi_encoder_enable() and make sure
the clks and power domain are released when the HDMI encoder is not used
by adding deactivation steps in vc4_hdmi_encoder_disable().
Note that the sequencing imposed by the IP requires that we move
vc4_hdmi_encoder_mode_set() code into vc4_hdmi_encoder_enable().
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Eric Anholt [Mon, 17 Apr 2017 23:31:24 +0000 (16:31 -0700)]
drm/cma: Fix recent regression of mmap() in the MMU case.
The stub get_unmapped_area() function was actually getting called, so
all of our mmap()s failed.
Cc: Yannick Fertre <yannick.fertre@st.com>
Fixes:
97bf3a9aa60f ("drm/cma: Update DEFINE_DRM_GEM_CMA_FOPS to add get_unmapped_area")
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170417233124.18420-1-eric@anholt.net
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Tue, 18 Apr 2017 12:11:20 +0000 (14:11 +0200)]
drm/cma-helper: Return ENOENT for "no such gem obj"
All the error codes we (ab)use are strictly not the right ones (since
they're all for the vfs, and the only thing we're allowed to do from
an ioctl is EINVAL). But ENOENT is the common error code for failed to
look up an object throughout drm, so let's use it in the cma helpers,
too.
Note that this does change uabi for some drivers, but that shouldn't
ba a problem:
- other drivers (e.g. i915) already return ENOENT for invalid gem bo
- userspace tends to only check for errors, not specific ones (except
when ioctl restarting is needed)
- if the gem bo isn't there a previous step (either creating or
importing it) failed already, this situation should always be a
userspace bug.
Changing it does help with debugging userspace bugs though, by making
error reporting more consistent.
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170418121120.31862-1-daniel.vetter@ffwll.ch
Dave Airlie [Thu, 13 Apr 2017 01:41:38 +0000 (11:41 +1000)]
sync_file: get rid of internal reference count.
sync_file uses the reference count of the file, the internal
kref was never getting moved past 1.
We can reintroduce this if we decide we need it later.
[airlied: fix buildbot warnings]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170413014144.637-2-airlied@gmail.com
Dan Carpenter [Sat, 15 Apr 2017 19:21:42 +0000 (22:21 +0300)]
drm: atmel-hlcdc: Uninitialized return in atmel_hlcdc_create_outputs()
It's not possible for endpoint to be zero so the test doesn't work. If
we break on the first iteration through the loop then endpoint is 1 and
"ret" is uninitialized.
Fixes:
ebc944613567 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170415192142.GA6416@mwanda
Dan Carpenter [Thu, 13 Apr 2017 19:48:28 +0000 (22:48 +0300)]
drm/i915/gvt: fix a bounds check in ring_id_to_context_switch_event()
There are two bugs here. The && should be || and the > is off by one so
it should be >= ARRAY_SIZE().
Fixes:
8453d674ae7e ("drm/i915/gvt: vGPU execlist virtualization")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Daniel Vetter [Wed, 12 Apr 2017 15:20:06 +0000 (17:20 +0200)]
drm/doc: Interlink color manager docs better
Motivated by a request from Eric.
v2: Take in suggestions from Lionel
Cc: Eric Anholt <eric@anholt.net>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170412152006.12233-1-daniel.vetter@ffwll.ch
Linus Torvalds [Sun, 16 Apr 2017 20:00:18 +0000 (13:00 -0700)]
Linux 4.11-rc7
Linus Torvalds [Sun, 16 Apr 2017 19:38:17 +0000 (12:38 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Again, a batch that's been sitting a couple of weeks, mostly because
I anticipated a bit more material but it didn't show up -- which is
good.
These are all your garden variety fixes for ARM platforms.
The most visible issue fixed here is probably the SMP reset issue on
OMAP, the rest are minor stuff"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: allwinner: a64: add pmu0 regs for USB PHY
ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer
reset: add exported __reset_control_get, return NULL if optional
ARM: orion5x: only call into phylib when available
ARM: omap2+: Revert omap-smp.c changes resetting CPU1 during boot
ARM: dts: am335x-evmsk: adjust mmc2 param to allow suspend
ARM: dts: ti: fix PCI bus dtc warnings
ARM: dts: am335x-baltos: disable EEE for Atheros 8035 PHY
ARM: dts: OMAP3: Fix MFG ID EEPROM
ARM: sun8i: a33: add operating-points-v2 property to all nodes
ARM: sun8i: a33: remove highest OPP to fix CPU crashes
Linus Torvalds [Sun, 16 Apr 2017 19:05:09 +0000 (12:05 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Four small fixes.
Three of them fix the same error in NVMe, in loop, fc, and rdma
respectively. The last fix from Ming fixes a regression in this
series, where our bvec gap logic was wrong and causes an oops on
NVMe for certain conditions"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: fix bio_will_gap() for first bvec with offset
nvme-fc: Fix sqsize wrong assignment based on ctrl MQES capability
nvme-rdma: Fix sqsize wrong assignment based on ctrl MQES capability
nvme-loop: Fix sqsize wrong assignment based on ctrl MQES capability
Olof Johansson [Sun, 16 Apr 2017 18:52:26 +0000 (11:52 -0700)]
Merge tag 'omap-for-v4.11/fixes-rc6-signed' of git://git./linux/kernel/git/tmlind/linux-omap into fixes
Regression fix for omap interconnect code for deferred probe.
Without this fix we can get PM related warnings for devices that
use deferred probe. If necessary, this fix can wait for the
v4.12 merge window no problem.
* tag 'omap-for-v4.11/fixes-rc6-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer
ARM: omap2+: Revert omap-smp.c changes resetting CPU1 during boot
ARM: dts: am335x-evmsk: adjust mmc2 param to allow suspend
ARM: dts: ti: fix PCI bus dtc warnings
ARM: dts: am335x-baltos: disable EEE for Atheros 8035 PHY
ARM: dts: OMAP3: Fix MFG ID EEPROM
Signed-off-by: Olof Johansson <olof@lixom.net>
Linus Torvalds [Sun, 16 Apr 2017 18:48:10 +0000 (11:48 -0700)]
Merge branch 'for-4.11-fixes' of git://git./linux/kernel/git/tj/cgroup
Pull cgroup fix from Tejun Heo:
"Unfortunately, the commit to fix the cgroup mount race in the previous
pull request can lead to hangs.
The original bug has been around for a while and isn't too likely to
be triggered in usual use cases. Revert the commit for now"
* 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
Revert "cgroup: avoid attaching a cgroup root to two different superblocks"
Linus Torvalds [Sun, 16 Apr 2017 18:35:34 +0000 (11:35 -0700)]
Merge tag 'tty-4.11-rc7' of git://git./linux/kernel/git/gregkh/tty
Pull tty fix from Greg KH:
"Here is a single tty core revert for a patch that was reported to
cause problems.
The original issue is one that we have lived with for decades, so
trying to scramble to fix the fix in time for 4.11-final does not make
sense due to the fragility of the tty ldisc layer. Just reverting it
makes sense for now"
* tag 'tty-4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "tty: don't panic on OOM in tty_set_ldisc()"
Linus Torvalds [Sun, 16 Apr 2017 17:01:34 +0000 (10:01 -0700)]
Merge tag 'trace-v4.11-rc5-2' of git://git./linux/kernel/git/rostedt/linux-trace
Pull ftrace fix from Steven Rostedt:
"While rewriting the function probe code, I stumbled over a long
standing bug. This bug has been there sinc function tracing was added
way back when. But my new development depends on this bug being fixed,
and it should be fixed regardless as it causes ftrace to disable
itself when triggered, and a reboot is required to enable it again.
The bug is that the function probe does not disable itself properly if
there's another probe of its type still enabled. For example:
# cd /sys/kernel/debug/tracing
# echo schedule:traceoff > set_ftrace_filter
# echo do_IRQ:traceoff > set_ftrace_filter
# echo \!do_IRQ:traceoff > /debug/tracing/set_ftrace_filter
# echo do_IRQ:traceoff > set_ftrace_filter
The above registers two traceoff probes (one for schedule and one for
do_IRQ, and then removes do_IRQ.
But since there still exists one for schedule, it is not done
properly. When adding do_IRQ back, the breakage in the accounting is
noticed by the ftrace self tests, and it causes a warning and disables
ftrace"
* tag 'trace-v4.11-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Fix removing of second function probe
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