<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/include/drm, branch v5.19-rc4</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>drm/ttm: fix bulk move handling v2</title>
<updated>2022-06-14T09:15:19+00:00</updated>
<author>
<name>Christian König</name>
<email>christian.koenig@amd.com</email>
</author>
<published>2022-06-13T07:37:03+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=0f9cd1ea10d307cad221d6693b648a8956e812b0'/>
<id>0f9cd1ea10d307cad221d6693b648a8956e812b0</id>
<content type='text'>
The resource must be on the LRU before ttm_lru_bulk_move_add() is called
and we need to check if the BO is pinned or not before adding it.

Additional to that we missed taking the LRU spinlock in ttm_bo_unpin().

Signed-off-by: Christian König &lt;christian.koenig@amd.com&gt;
Reviewed-by: Arunpravin Paneer Selvam &lt;Arunpravin.PaneerSelvam@amd.com&gt;
Acked-by: Luben Tuikov &lt;luben.tuikov@amd.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220613080816.4965-1-christian.koenig@amd.com
Fixes: fee2ede15542 ("drm/ttm: rework bulk move handling v5")
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The resource must be on the LRU before ttm_lru_bulk_move_add() is called
and we need to check if the BO is pinned or not before adding it.

Additional to that we missed taking the LRU spinlock in ttm_bo_unpin().

Signed-off-by: Christian König &lt;christian.koenig@amd.com&gt;
Reviewed-by: Arunpravin Paneer Selvam &lt;Arunpravin.PaneerSelvam@amd.com&gt;
Acked-by: Luben Tuikov &lt;luben.tuikov@amd.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220613080816.4965-1-christian.koenig@amd.com
Fixes: fee2ede15542 ("drm/ttm: rework bulk move handling v5")
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/atomic: fix warning of unused variable</title>
<updated>2022-06-09T14:09:46+00:00</updated>
<author>
<name>GONG, Ruiqi</name>
<email>gongruiqi1@huawei.com</email>
</author>
<published>2022-06-07T11:08:48+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=4527d47bb63a134c4483a1a478d0ff5874b466c7'/>
<id>4527d47bb63a134c4483a1a478d0ff5874b466c7</id>
<content type='text'>
Fix the `unused-but-set-variable` warning as how other iteration
wrappers do.

Link: https://lore.kernel.org/all/202206071049.pofHsRih-lkp@intel.com/
Reported-by: kernel test robot &lt;lkp@intel.com&gt;
Signed-off-by: GONG, Ruiqi &lt;gongruiqi1@huawei.com&gt;
Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220607110848.941486-1-gongruiqi1@huawei.com
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix the `unused-but-set-variable` warning as how other iteration
wrappers do.

Link: https://lore.kernel.org/all/202206071049.pofHsRih-lkp@intel.com/
Reported-by: kernel test robot &lt;lkp@intel.com&gt;
Signed-off-by: GONG, Ruiqi &lt;gongruiqi1@huawei.com&gt;
Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220607110848.941486-1-gongruiqi1@huawei.com
</pre>
</div>
</content>
</entry>
<entry>
<title>LoongArch: Add writecombine support for drm</title>
<updated>2022-06-03T12:09:27+00:00</updated>
<author>
<name>Huacai Chen</name>
<email>chenhuacai@loongson.cn</email>
</author>
<published>2022-05-31T10:04:10+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=439057ec3b748b1ff61855d09859f369493e22d8'/>
<id>439057ec3b748b1ff61855d09859f369493e22d8</id>
<content type='text'>
LoongArch maintains cache coherency in hardware, but its WUC attribute
(Weak-ordered UnCached, which is similar to WC) is out of the scope of
cache coherency machanism. This means WUC can only used for write-only
memory regions.

Cc: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: WANG Xuerui &lt;git@xen0n.name&gt;
Reviewed-by: Jiaxun Yang &lt;jiaxun.yang@flygoat.com&gt;
Signed-off-by: Huacai Chen &lt;chenhuacai@loongson.cn&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
LoongArch maintains cache coherency in hardware, but its WUC attribute
(Weak-ordered UnCached, which is similar to WC) is out of the scope of
cache coherency machanism. This means WUC can only used for write-only
memory regions.

Cc: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: WANG Xuerui &lt;git@xen0n.name&gt;
Reviewed-by: Jiaxun Yang &lt;jiaxun.yang@flygoat.com&gt;
Signed-off-by: Huacai Chen &lt;chenhuacai@loongson.cn&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm: fix EDID struct for old ARM OABI format</title>
<updated>2022-05-28T20:06:49+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2022-05-28T18:08:48+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=47f15561b69e226bfc034e94ff6dbec51a4662af'/>
<id>47f15561b69e226bfc034e94ff6dbec51a4662af</id>
<content type='text'>
When building the kernel for arm with the "-mabi=apcs-gnu" option, gcc
will force alignment of all structures and unions to a word boundary
(see also STRUCTURE_SIZE_BOUNDARY and the "-mstructure-size-boundary=XX"
option if you're a gcc person), even when the members of said structures
do not want or need said alignment.

This completely messes up the structure alignment of 'struct edid' on
those targets, because even though all the embedded structures are
marked with "__attribute__((packed))", the unions that contain them are
not.

This was exposed by commit f1e4c916f97f ("drm/edid: add EDID block count
and size helpers"), but the bug is pre-existing.  That commit just made
the structure layout problem cause a build failure due to the addition
of the

        BUILD_BUG_ON(sizeof(*edid) != EDID_LENGTH);

sanity check in drivers/gpu/drm/drm_edid.c:edid_block_data().

This legacy union alignment should probably not be used in the first
place, but we can fix the layout by adding the packed attribute to the
union entries even when each member is already packed and it shouldn't
matter in a sane build environment.

You can see this issue with a trivial test program:

  union {
	struct {
		char c[5];
	};
	struct {
		char d;
		unsigned e;
	} __attribute__((packed));
  } a = { "1234" };

where building this with a normal "gcc -S" will result in the expected
5-byte size of said union:

	.type	a, @object
	.size	a, 5

but with an ARM compiler and the old ABI:

    arm-linux-gnu-gcc -mabi=apcs-gnu -mfloat-abi=soft -S t.c

you get

	.type	a, %object
	.size	a, 8

instead, because even though each member of the union is packed, the
union itself still gets aligned.

This was reported by Sudip for the spear3xx_defconfig target.

Link: https://lore.kernel.org/lkml/YpCUzStDnSgQLNFN@debian/
Reported-by: Sudip Mukherjee &lt;sudipm.mukherjee@gmail.com&gt;
Acked-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Maarten Lankhorst &lt;maarten.lankhorst@linux.intel.com&gt;
Cc: Maxime Ripard &lt;mripard@kernel.org&gt;
Cc: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Cc: David Airlie &lt;airlied@linux.ie&gt;
Cc: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
When building the kernel for arm with the "-mabi=apcs-gnu" option, gcc
will force alignment of all structures and unions to a word boundary
(see also STRUCTURE_SIZE_BOUNDARY and the "-mstructure-size-boundary=XX"
option if you're a gcc person), even when the members of said structures
do not want or need said alignment.

This completely messes up the structure alignment of 'struct edid' on
those targets, because even though all the embedded structures are
marked with "__attribute__((packed))", the unions that contain them are
not.

This was exposed by commit f1e4c916f97f ("drm/edid: add EDID block count
and size helpers"), but the bug is pre-existing.  That commit just made
the structure layout problem cause a build failure due to the addition
of the

        BUILD_BUG_ON(sizeof(*edid) != EDID_LENGTH);

sanity check in drivers/gpu/drm/drm_edid.c:edid_block_data().

This legacy union alignment should probably not be used in the first
place, but we can fix the layout by adding the packed attribute to the
union entries even when each member is already packed and it shouldn't
matter in a sane build environment.

You can see this issue with a trivial test program:

  union {
	struct {
		char c[5];
	};
	struct {
		char d;
		unsigned e;
	} __attribute__((packed));
  } a = { "1234" };

where building this with a normal "gcc -S" will result in the expected
5-byte size of said union:

	.type	a, @object
	.size	a, 5

but with an ARM compiler and the old ABI:

    arm-linux-gnu-gcc -mabi=apcs-gnu -mfloat-abi=soft -S t.c

you get

	.type	a, %object
	.size	a, 8

instead, because even though each member of the union is packed, the
union itself still gets aligned.

This was reported by Sudip for the spear3xx_defconfig target.

Link: https://lore.kernel.org/lkml/YpCUzStDnSgQLNFN@debian/
Reported-by: Sudip Mukherjee &lt;sudipm.mukherjee@gmail.com&gt;
Acked-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Maarten Lankhorst &lt;maarten.lankhorst@linux.intel.com&gt;
Cc: Maxime Ripard &lt;mripard@kernel.org&gt;
Cc: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Cc: David Airlie &lt;airlied@linux.ie&gt;
Cc: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'drm-msm-next-2022-05-09' of https://gitlab.freedesktop.org/drm/msm into drm-next</title>
<updated>2022-05-11T02:40:47+00:00</updated>
<author>
<name>Dave Airlie</name>
<email>airlied@redhat.com</email>
</author>
<published>2022-05-11T02:40:47+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=f83493f7d34da258310ecd3d07f0cc78f884c954'/>
<id>f83493f7d34da258310ecd3d07f0cc78f884c954</id>
<content type='text'>
- Fourcc modifier for tiled but not compressed layouts
- Support for userspace allocated IOVA (GPU virtual address)
- Devfreq clamp_to_idle fix
- DPU: DSC (Display Stream Compression) support
- DPU: inline rotation support on SC7280
- DPU: update DP timings to follow vendor recommendations
- DP, DPU: add support for wide bus (on newer chipsets)
- DP: eDP support
- Merge DPU1 and MDP5 MDSS driver, make dpu/mdp device the master
  component
- MDSS: optionally reset the IP block at the bootup to drop
  bootloader state
- Properly register and unregister internal bridges in the DRM framework
- Complete DPU IRQ cleanup
- DP: conversion to use drm_bridge and drm_bridge_connector
- eDP: drop old eDP parts again
- DPU: writeback support
- Misc small fixes

Signed-off-by: Dave Airlie &lt;airlied@redhat.com&gt;
From: Rob Clark &lt;robdclark@gmail.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvJCr_1D8d0dgmyQC5HD4gmXeZw=bFV_CNCfceZbpMxRw@mail.gmail.com
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
- Fourcc modifier for tiled but not compressed layouts
- Support for userspace allocated IOVA (GPU virtual address)
- Devfreq clamp_to_idle fix
- DPU: DSC (Display Stream Compression) support
- DPU: inline rotation support on SC7280
- DPU: update DP timings to follow vendor recommendations
- DP, DPU: add support for wide bus (on newer chipsets)
- DP: eDP support
- Merge DPU1 and MDP5 MDSS driver, make dpu/mdp device the master
  component
- MDSS: optionally reset the IP block at the bootup to drop
  bootloader state
- Properly register and unregister internal bridges in the DRM framework
- Complete DPU IRQ cleanup
- DP: conversion to use drm_bridge and drm_bridge_connector
- eDP: drop old eDP parts again
- DPU: writeback support
- Misc small fixes

Signed-off-by: Dave Airlie &lt;airlied@redhat.com&gt;
From: Rob Clark &lt;robdclark@gmail.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvJCr_1D8d0dgmyQC5HD4gmXeZw=bFV_CNCfceZbpMxRw@mail.gmail.com
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'drm-intel-next-2022-05-06' of git://anongit.freedesktop.org/drm/drm-intel into drm-next</title>
<updated>2022-05-11T01:00:15+00:00</updated>
<author>
<name>Dave Airlie</name>
<email>airlied@redhat.com</email>
</author>
<published>2022-05-11T01:00:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=d53b8e19c24bab37f72a2fc4b61d6f4d77b84ab4'/>
<id>d53b8e19c24bab37f72a2fc4b61d6f4d77b84ab4</id>
<content type='text'>
drm/i915 feature pull #2 for v5.19:

Features and functionality:
- Add first set of DG2 PCI IDs for "motherboard down" designs (Matt Roper)
- Add initial RPL-P PCI IDs as ADL-P subplatform (Matt Atwood)

Refactoring and cleanups:
- Power well refactoring and cleanup (Imre)
- GVT-g refactor and mdev API cleanup (Christoph, Jason, Zhi)
- DPLL refactoring and cleanup (Ville)
- VBT panel specific data parsing cleanup (Ville)
- Use drm_mode_init() for on-stack modes (Ville)

Fixes:
- Fix PSR state pipe A/B confusion by clearing more state on disable (José)
- Fix FIFO underruns caused by not taking DRAM channel into account (Vinod)
- Fix FBC flicker on display 11+ by enabling a workaround (José)
- Fix VBT seamless DRRS min refresh rate check (Ville)
- Fix panel type assumption on bogus VBT data (Ville)
- Fix panel data parsing for VBT that misses panel data pointers block (Ville)
- Fix spurious AUX timeout/hotplug handling on LTTPR links (Imre)

Merges:
- Backmerge drm-next (Jani)
- GVT changes (Jani)

Signed-off-by: Dave Airlie &lt;airlied@redhat.com&gt;
From: Jani Nikula &lt;jani.nikula@intel.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/87bkwbkkdo.fsf@intel.com
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
drm/i915 feature pull #2 for v5.19:

Features and functionality:
- Add first set of DG2 PCI IDs for "motherboard down" designs (Matt Roper)
- Add initial RPL-P PCI IDs as ADL-P subplatform (Matt Atwood)

Refactoring and cleanups:
- Power well refactoring and cleanup (Imre)
- GVT-g refactor and mdev API cleanup (Christoph, Jason, Zhi)
- DPLL refactoring and cleanup (Ville)
- VBT panel specific data parsing cleanup (Ville)
- Use drm_mode_init() for on-stack modes (Ville)

Fixes:
- Fix PSR state pipe A/B confusion by clearing more state on disable (José)
- Fix FIFO underruns caused by not taking DRAM channel into account (Vinod)
- Fix FBC flicker on display 11+ by enabling a workaround (José)
- Fix VBT seamless DRRS min refresh rate check (Ville)
- Fix panel type assumption on bogus VBT data (Ville)
- Fix panel data parsing for VBT that misses panel data pointers block (Ville)
- Fix spurious AUX timeout/hotplug handling on LTTPR links (Imre)

Merges:
- Backmerge drm-next (Jani)
- GVT changes (Jani)

Signed-off-by: Dave Airlie &lt;airlied@redhat.com&gt;
From: Jani Nikula &lt;jani.nikula@intel.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/87bkwbkkdo.fsf@intel.com
</pre>
</div>
</content>
</entry>
<entry>
<title>drm: Add DRM-managed mutex_init()</title>
<updated>2022-05-05T07:04:10+00:00</updated>
<author>
<name>Thomas Zimmermann</name>
<email>tzimmermann@suse.de</email>
</author>
<published>2022-05-02T14:25:12+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e13f13e039dc8f31168b5569120a7658035c80ee'/>
<id>e13f13e039dc8f31168b5569120a7658035c80ee</id>
<content type='text'>
Add drmm_mutex_init(), a helper that provides managed mutex cleanup. The
mutex will be destroyed with the final reference of the DRM device.

Signed-off-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Reviewed-by: Jocelyn Falempe &lt;jfalempe@redhat.com&gt;
Reviewed-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220502142514.2174-2-tzimmermann@suse.de
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add drmm_mutex_init(), a helper that provides managed mutex cleanup. The
mutex will be destroyed with the final reference of the DRM device.

Signed-off-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Reviewed-by: Jocelyn Falempe &lt;jfalempe@redhat.com&gt;
Reviewed-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220502142514.2174-2-tzimmermann@suse.de
</pre>
</div>
</content>
</entry>
<entry>
<title>fbdev: Rename pagelist to pagereflist for deferred I/O</title>
<updated>2022-05-03T14:04:22+00:00</updated>
<author>
<name>Thomas Zimmermann</name>
<email>tzimmermann@suse.de</email>
</author>
<published>2022-04-29T10:08:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e80eec1b871a2acb8f5c92db4c237e9ae6dd322b'/>
<id>e80eec1b871a2acb8f5c92db4c237e9ae6dd322b</id>
<content type='text'>
Rename various instances of pagelist to pagereflist. The list now
stores pageref structures, so the new name is more appropriate.

In their write-back helpers, several fbdev drivers refer to the
pageref list in struct fb_deferred_io instead of using the one
supplied as argument to the function. Convert them over to the
supplied one. It's the same instance, so no change of behavior
occurs.

v4:
	* fix commit message (Javier)

Suggested-by: Sam Ravnborg &lt;sam@ravnborg.org&gt;
Signed-off-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Reviewed-by: Javier Martinez Canillas &lt;javierm@redhat.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220429100834.18898-5-tzimmermann@suse.de
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Rename various instances of pagelist to pagereflist. The list now
stores pageref structures, so the new name is more appropriate.

In their write-back helpers, several fbdev drivers refer to the
pageref list in struct fb_deferred_io instead of using the one
supplied as argument to the function. Convert them over to the
supplied one. It's the same instance, so no change of behavior
occurs.

v4:
	* fix commit message (Javier)

Suggested-by: Sam Ravnborg &lt;sam@ravnborg.org&gt;
Signed-off-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Reviewed-by: Javier Martinez Canillas &lt;javierm@redhat.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220429100834.18898-5-tzimmermann@suse.de
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge drm/drm-next into drm-misc-next</title>
<updated>2022-05-03T09:53:42+00:00</updated>
<author>
<name>Maxime Ripard</name>
<email>maxime@cerno.tech</email>
</author>
<published>2022-05-03T09:53:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=b812f646bb818ca0e1806072eb7f0006f3a65dde'/>
<id>b812f646bb818ca0e1806072eb7f0006f3a65dde</id>
<content type='text'>
Christian needs a backmerge to avoid a merge conflict for amdgpu.

Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Christian needs a backmerge to avoid a merge conflict for amdgpu.

Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm: handle kernel fences in drm_gem_plane_helper_prepare_fb v2</title>
<updated>2022-05-02T07:01:51+00:00</updated>
<author>
<name>Christian König</name>
<email>christian.koenig@amd.com</email>
</author>
<published>2022-04-21T18:20:49+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=1ea28bc5542d607ff7c806e409a72862c5af8f5e'/>
<id>1ea28bc5542d607ff7c806e409a72862c5af8f5e</id>
<content type='text'>
drm_gem_plane_helper_prepare_fb() was using
drm_atomic_set_fence_for_plane() which ignores all implicit fences when an
explicit fence is already set. That's rather unfortunate when the fb still
has a kernel fence we need to wait for to avoid presenting garbage on the
screen.

So instead update the fence in the plane state directly. While at it also
take care of all potential GEM objects and not just the first one.

Also remove the now unused drm_atomic_set_fence_for_plane() function, new
drivers should probably use the atomic helpers directly.

v2: improve kerneldoc, use local variable and num_planes, WARN_ON_ONCE
    on missing planes.

Signed-off-by: Christian König &lt;christian.koenig@amd.com&gt;
Reviewed-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt; (v1)
Acked-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220429134230.24334-1-christian.koenig@amd.com
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
drm_gem_plane_helper_prepare_fb() was using
drm_atomic_set_fence_for_plane() which ignores all implicit fences when an
explicit fence is already set. That's rather unfortunate when the fb still
has a kernel fence we need to wait for to avoid presenting garbage on the
screen.

So instead update the fence in the plane state directly. While at it also
take care of all potential GEM objects and not just the first one.

Also remove the now unused drm_atomic_set_fence_for_plane() function, new
drivers should probably use the atomic helpers directly.

v2: improve kerneldoc, use local variable and num_planes, WARN_ON_ONCE
    on missing planes.

Signed-off-by: Christian König &lt;christian.koenig@amd.com&gt;
Reviewed-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt; (v1)
Acked-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20220429134230.24334-1-christian.koenig@amd.com
</pre>
</div>
</content>
</entry>
</feed>
