Deferred IO now preserves the fb_ops.

v2: Remove the no-op vfree, drop a local var  (Noralf)

Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NNoralf Trønnes <noralf@tronnes.org>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1eae0b23d4724d5702b886b6a061ec8219eb9284.1575022735.git.jani.nikula@intel.com

Modifying fb_ops directly to override fb_mmap with fb_deferred_io_mmap
and then resetting it to NULL afterwards causes problems all over the
place. First, it prevents making the fbops member of struct fb_info a
const pointer, which means we can't make struct fb_ops const
anywhere. Second, a few places have to go out of their way to restore
the original fb_mmap pointer that gets reset to NULL.

Since the only user of the fbops->fb_mmap hook is fb_mmap() in fbmem.c,
call fb_deferred_io_mmap() directly when deferred IO is enabled, and
avoid modifying fb_ops altogether.

Simply use info->fbdefio to determine whether deferred IO should be used
or not. This should be accurate enough for all use cases, although
perhaps not pedantically correct.

v2: Simplify considerably by calling fb_deferred_io_mmap() directly
    (Daniel, Ville)

Cc: Jaya Kumar <jayalk@intworks.biz>
Cc: linux-fbdev@vger.kernel.org
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: NNoralf Trønnes <noralf@tronnes.org>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/022c82429da15d6450ff9ac1a897322ec3124db4.1575022735.git.jani.nikula@intel.com

This adds a starting point for processing and defining generic
bindings used by DSI display controllers and panels attached to
the virtual DSI ports.

Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: devicetree@vger.kernel.org
Suggested-by: NRob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128090726.51107-1-linus.walleij@linaro.orgReviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

As mentioned by Christian, for drivers which support only primary nodes
this changes the returned error from -EACCES into -EOPNOTSUPP/-ENOSYS.

For others, this check in particular will be a noop. So let's remove it
as suggested by Christian.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sean Paul <sean@poorly.run>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NEmil Velikov <emil.velikov@collabora.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101130313.8862-5-emil.l.velikov@gmail.com

As of earlier commit we have address space separation. Yet we forgot to
remove the respective comment and DRM_AUTH in the ioctl declaration.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Steven Price <steven.price@arm.com>
Fixes: 7282f764 ("drm/panfrost: Implement per FD address spaces")
Signed-off-by: NEmil Velikov <emil.velikov@collabora.com>
Reviewed-by: NSteven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101130313.8862-4-emil.l.velikov@gmail.com

Current comment mentions /dev/drm which hasn't been a thing even before
the code was merged into the kernel ;-)

v2: drop explicit node path (Sean)
Signed-off-by: NEmil Velikov <emil.velikov@collabora.com>
Reviewed-by: NSean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20190722165648.7828-1-emil.l.velikov@gmail.com

bridge->next is only points to the new bridge if drm_bridge_attach()
succeeds. No need to reset it manually here.

Note that this change is part of the attempt to make the bridge chain
a double-linked list. In order to do that we must patch all drivers
manipulating the bridge->next field.
Signed-off-by: NBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NInki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191023154512.9762-3-boris.brezillon@collabora.com

Use the drm_panel_get_modes function.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NEmil Velikov <emil.velikov@collabora.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-10-sam@ravnborg.org

Use the function drm_panel_get_modes().
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NEmil Velikov <emil.velikov@collabora.com>
Cc: Alexios Zavras <alexios.zavras@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Allison Randal <allison@lohutok.net>
Cc: Enrico Weigelt <info@metux.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-7-sam@ravnborg.org

Call via drm_panel_get_modes().
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NEmil Velikov <emil.velikov@collabora.com>
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>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-4-sam@ravnborg.org

drm_panel_attach() will check if there is a controller
already attached - drop the check in the driver.

Use drm_panel_get_modes() so the driver no longer uses the function
pointer.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NEmil Velikov <emil.velikov@collabora.com>
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>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-3-sam@ravnborg.org

There is a continue statement that is indented one level too deeply,
remove the extraneous tab.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925120357.10408-1-colin.king@canonical.com

Previously, there was an omap panel-dpi driver that would
read generic timings from the device tree and set the display
timing accordingly.  This driver was removed so the screen
no longer functions.  This patch modifies the panel-simple
file to setup the timings to the same values previously used.

Fixes: 8bf4b162 ("drm/omap: Remove panel-dpi driver")
Signed-off-by: NAdam Ford <aford173@gmail.com>
Reviewed-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191016135147.7743-1-aford173@gmail.com

This patch adds documentation of device tree bindings for the WVGA panel
Logic PD Type 28 display.
Signed-off-by: NAdam Ford <aford173@gmail.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191016135147.7743-2-aford173@gmail.com

This thing can get called several thousand times per LUT
so seems like we want to inline it to:
- avoid the function call overhead
- allow constant folding

A quick synthetic test (w/o any hardware interaction) with
a ridiculously large LUT size shows about 50% reduction in
runtime on my HSW and BSW boxes. Slightly less with more
reasonable LUT size but still easily measurable in tens
of microseconds.

v2: Include drm_color_mgmt.h in the .rst (Daniel)

Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191108135654.12907-1-ville.syrjala@linux.intel.com

We're doing a great job for really simple drivers right now, but still
a lot of boilerplate for the bigger ones.
Acked-by: NThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127180035.416209-3-daniel.vetter@ffwll.ch

[Why]
In hdmi_mode_alternate_clock(), it adds an exception for VIC 4
mode (4096x2160@24) due to there is no alternate clock defined for
that mode in HDMI1.4b. But HDMI2.0 adds 23.98Hz for that mode.

[How]
Remove the exception

v2: Adjust the comment description of hdmi_mode_alternate_clock()
due to there is no more exception for VIC 4 mode.
Signed-off-by: NWayne Lin <Wayne.Lin@amd.com>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191118101832.15487-2-Wayne.Lin@amd.com

[Why]
HDMI 2.0 adds aspect ratio attribute to distinguish different
4k modes. According to Appendix E of HDMI 2.0 spec, source should
use VSIF to indicate video mode only when the mode is one defined
in HDMI 1.4b 4K modes. Otherwise, use AVI infoframes to convey VIC.

Current code doesn't take aspect ratio into consideration while
constructing avi infoframe. Should modify that.

[How]
Inherit Ville Syrjälä's work
"drm/edid: Prep for HDMI VIC aspect ratio" at
https://patchwork.kernel.org/patch/11174639/

Add picture_aspect_ratio attributes to edid_4k_modes[] and
construct VIC and HDMI_VIC by taking aspect ratio into
consideration.

v2: Correct missing initializer error at adding aspect ratio of
SMPTE mode.
Signed-off-by: NWayne Lin <Wayne.Lin@amd.com>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191118101832.15487-1-Wayne.Lin@amd.com

A coccicheck run provided information like the following.

drivers/gpu/drm/qxl/qxl_kms.c:295:1-7: ERROR: missing iounmap;
ioremap on line 178 and execution via conditional on line 185

Generated by: scripts/coccinelle/free/iounmap.cocci

A jump target was specified in an if branch. The corresponding function
call did not release the desired system resource then.
Thus use the label “rom_unmap” instead to fix the exception handling
for this function implementation.

Fixes: 5043348a ("drm: qxl: Fix error handling at qxl_device_init")
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Link: http://patchwork.freedesktop.org/patch/msgid/5e5ef9c4-4d85-3c93-cf28-42cfcb5b0649@web.deSigned-off-by: NGerd Hoffmann <kraxel@redhat.com>

If rockchip would switch over to the generic fbdev setup we could
grabage collect even more of all this code (all of the remaining fb
handling code really).

v2: Actually use _with_dirty like the patch subject promised (Andrzej)

Cc: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Reviewed-by: NAndrzej Pietrasiewicz <andrzej.p@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: "Heiko Stübner" <heiko@sntech.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191127180035.416209-1-daniel.vetter@ffwll.ch

This was forgotten in f96bdf56 ("drm/rect: Handle rounding errors
in drm_rect_clip_scaled, v3.")

Spotted while reviewing patches from Ville touching this area.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Fixes: f96bdf56 ("drm/rect: Handle rounding errors in drm_rect_clip_scaled, v3.")
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Benjamin Gaignard <benjamin.gaignard@st.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126145213.380079-1-daniel.vetter@ffwll.ch

Add selftests for drm_rect. A few basic ones for clipped and unclipped
cases, and a few special ones for specific bugs we had in the code.

I'm too lazy to think of more corner cases to check at this time.
Maybe later.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191122175623.13565-5-ville.syrjala@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@st.com>

Now that we've constrained the clipped source rectangle such
that it can't have negative dimensions doing the same for the
dst rectangle seems appropriate. Should at least result in
the clipped src and dst rectangles being a bit more consistent
with each other.

Cc: Benjamin Gaignard <benjamin.gaignard@st.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191122175623.13565-4-ville.syrjala@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@st.com>

Limit the scaled clip to only clip at most dst_w/h pixels.
This avoids the problem with clip_scaled() not being able
to return negative values. Since new_src_w/h is now properly
bounded we can remove the clamp()s.

Cc: Benjamin Gaignard <benjamin.gaignard@st.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Testcase: igt/kms_selftest/drm_rect_clip_scaled_signed_vs_unsigned
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191122175623.13565-3-ville.syrjala@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@st.com>

Check for zero width/height destination rectangle in
drm_rect_clip_scaled() to avoid a division by zero.

Cc: stable@vger.kernel.org
Fixes: f96bdf56 ("drm/rect: Handle rounding errors in drm_rect_clip_scaled, v3.")
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Benjamin Gaignard <benjamin.gaignard@st.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Testcase: igt/kms_selftest/drm_rect_clip_scaled_div_by_zero
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191122175623.13565-2-ville.syrjala@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@st.com>

0 means 1 as the default, but it's mighty confusing if the block size
for the first plane is spelled out explicitly, but not for the 2nd
plane.

No cc: stable because this is just confusion, but 0 functional issue.
Acked-by: NLiviu Dudau <liviu.dudau@arm.com>
Fixes: 7ba0fee2 ("drm/fourcc: Add AFBC yuv fourccs for Mali")
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: Ayan Kumar Halder <ayan.halder@arm.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126091414.226070-2-daniel.vetter@ffwll.ch

0 means 1 as the default, but it's mighty confusing if the block size
for the first plane is spelled out explicitly, but not for the 2nd
plane.

No cc: stable because this is just confusion, but 0 functional issue.
Acked-by: NLiviu Dudau <liviu.dudau@arm.com>
Fixes: 05f8bc82 ("drm/fourcc: Add new P010, P016 video format")
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Randy Li <ayaka@soulik.info>
Cc: Clint Taylor <clinton.a.taylor@intel.com>
Cc: Ayan Kumar Halder <ayan.halder@arm.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126091414.226070-1-daniel.vetter@ffwll.ch

Caused by file removal without adjusting the Makefile.

Fixes: d268f42e ("drm/mediatek: don't open-code drm_gem_fb_create")
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: CK Hu <ck.hu@mediatek.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: NMihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127170513.42251-1-mihail.atanassov@arm.com

Problem:
Due to a race between drm_sched_cleanup_jobs in sched thread and
drm_sched_job_timedout in timeout work there is a possiblity that
bad job was already freed while still being accessed from the
timeout thread.

Fix:
Instead of just peeking at the bad job in the mirror list
remove it from the list under lock and then put it back later when
we are garanteed no race with main sched thread is possible which
is after the thread is parked.

v2: Lock around processing ring_mirror_list in drm_sched_cleanup_jobs.

v3: Rebase on top of drm-misc-next. v2 is not needed anymore as
drm_sched_get_cleanup_job already has a lock there.

v4: Fix comments to relfect latest code in drm-misc.
Signed-off-by: NAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NEmily Deng <Emily.Deng@amd.com>
Tested-by: NEmily Deng <Emily.Deng@amd.com>
Signed-off-by: NChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/342356

Commit b0e40e08 ("vram: Have VRAM MM call GEM VRAM functions directly")
removed this.
Signed-off-by: NGurchetan Singh <gurchetansingh@chromium.org>
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NThomas Zimmermann <tzimmermann@suse.de>
Fixes: b0e40e08 ("drm/vram: Have VRAM MM call GEM VRAM functions directly")
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: virtualization@lists.linux-foundation.org
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191126184339.337-1-gurchetansingh@chromium.org

Commit 7f0de8d8 ("dma-buf: Drop dma_buf_k(un)map") removed map/unmap
handlers, but they still existed in udmabuf. Remove them there as well
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: 7f0de8d8 ("dma-buf: Drop dma_buf_k(un)map")
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126142516.630200-1-maarten.lankhorst@linux.intel.com

The udl driver's struct udl_framebuffer stores a DRM framebuffer
with an associated GEM object. This functionality is also provided by
generic code. Switch udl over.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114141025.32198-6-tzimmermann@suse.de

Simplifying the udl code before replacing struct udl_framebuffer.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114141025.32198-5-tzimmermann@suse.de

The framebuffer's 'active_16' flag signals which framebuffer to flush
to device memory. Moving the 'active_16' state from struct udl_framebuffer
into struct udl_device prepares for using the generic GEM framebuffer.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114141025.32198-4-tzimmermann@suse.de

Udl's custom implementation for struct drm_gem_object_funcs.free_object
unmaps perma-mapped memory buffer before freeing the buffer object.

After switching to generic fbdev emulation and fixing the damage
handler, no perma-mapped buffers have to be released. Switch to SHMEM's
implementation of free_object.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114141025.32198-3-tzimmermann@suse.de

Udl keeps a BO mapped for its entire lifetime if it has been used in a
damage update at least once. The BO's free callback release the mapping
before it frees the BO.

Change this behaviour to unmap immediately after the damage update, so
SHMEM's implementation of free can be used.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114141025.32198-2-tzimmermann@suse.de

All implementations are gone now.
Acked-by: NSumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-16-daniel.vetter@ffwll.ch

It's a dummy anyway.
Acked-by: NRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Cc: Russell King <linux@armlinux.org.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-6-daniel.vetter@ffwll.ch

No in-tree users left.
Acked-by: NSumit Semwal <sumit.semwal@linaro.org>
Acked-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Cc: Kirti Wankhede <kwankhede@nvidia.com>
Cc: kvm@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-15-daniel.vetter@ffwll.ch

There's no in-kernel users for the k(un)map stuff. And the mmap one is
actively harmful - return 0 and then _not_ actually mmaping can't end
well.
Acked-by: NSumit Semwal <sumit.semwal@linaro.org>
Reviewed-by: NOleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: NJuergen Gross <jgross@suse.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: xen-devel@lists.xenproject.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-14-daniel.vetter@ffwll.ch