<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers, branch v6.13.9</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>drm/amdkfd: Fix instruction hazard in gfx12 trap handler</title>
<updated>2025-03-28T21:04:58+00:00</updated>
<author>
<name>Jay Cornwall</name>
<email>jay.cornwall@amd.com</email>
</author>
<published>2025-02-07T21:40:34+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=cad65562a54cf83337c40e5d1d77aed86d63df42'/>
<id>cad65562a54cf83337c40e5d1d77aed86d63df42</id>
<content type='text'>
commit 424648c3838133f93a34fdfe4f9d5597551e7b3b upstream.

VALU instructions with SGPR source need wait states to avoid hazard
with SALU using different SGPR.

v2: Eliminate some hazards to reduce code explosion

Signed-off-by: Jay Cornwall &lt;jay.cornwall@amd.com&gt;
Reviewed-by: Lancelot Six &lt;lancelot.six@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 7e0459d453b911435673edd7a86eadc600c63238)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 424648c3838133f93a34fdfe4f9d5597551e7b3b upstream.

VALU instructions with SGPR source need wait states to avoid hazard
with SALU using different SGPR.

v2: Eliminate some hazards to reduce code explosion

Signed-off-by: Jay Cornwall &lt;jay.cornwall@amd.com&gt;
Reviewed-by: Lancelot Six &lt;lancelot.six@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 7e0459d453b911435673edd7a86eadc600c63238)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdkfd: Fix user queue validation on Gfx7/8</title>
<updated>2025-03-28T21:04:58+00:00</updated>
<author>
<name>Philip Yang</name>
<email>Philip.Yang@amd.com</email>
</author>
<published>2025-01-29T17:37:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d2cfea1c10968e1b8da0e3e9226da06439f2dce3'/>
<id>d2cfea1c10968e1b8da0e3e9226da06439f2dce3</id>
<content type='text'>
commit 542c3bb836733a1325874310d54d25b4907ed10e upstream.

To workaround queue full h/w issue on Gfx7/8, when application create
AQL queue, the ring buffer bo allocate size is queue_size/2 and
map queue_size ring buffer to GPU in 2 pieces using 2 attachments, each
attachment map size is queue_size/2, with same ring_bo backing memory.

For Gfx7/8, user queue buffer validation should use queue_size/2 to
verify ring_bo allocation and mapping size.

Fixes: 68e599db7a54 ("drm/amdkfd: Validate user queue buffers")
Suggested-by: Tomáš Trnka &lt;trnka@scm.com&gt;
Signed-off-by: Philip Yang &lt;Philip.Yang@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit e7a477735f1771b9a9346a5fbd09d7ff0641723a)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 542c3bb836733a1325874310d54d25b4907ed10e upstream.

To workaround queue full h/w issue on Gfx7/8, when application create
AQL queue, the ring buffer bo allocate size is queue_size/2 and
map queue_size ring buffer to GPU in 2 pieces using 2 attachments, each
attachment map size is queue_size/2, with same ring_bo backing memory.

For Gfx7/8, user queue buffer validation should use queue_size/2 to
verify ring_bo allocation and mapping size.

Fixes: 68e599db7a54 ("drm/amdkfd: Validate user queue buffers")
Suggested-by: Tomáš Trnka &lt;trnka@scm.com&gt;
Signed-off-by: Philip Yang &lt;Philip.Yang@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit e7a477735f1771b9a9346a5fbd09d7ff0641723a)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: Fix JPEG video caps max size for navi1x and raven</title>
<updated>2025-03-28T21:04:58+00:00</updated>
<author>
<name>David Rosca</name>
<email>david.rosca@amd.com</email>
</author>
<published>2025-02-28T12:34:49+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=2baa41049e6a7e556dd645807c45e5f5bb5f04db'/>
<id>2baa41049e6a7e556dd645807c45e5f5bb5f04db</id>
<content type='text'>
commit ec33964d9d88488fa954a03d476a8b811efc6e85 upstream.

8192x8192 is the maximum supported resolution.

Signed-off-by: David Rosca &lt;david.rosca@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Reviewed-by: Ruijing Dong &lt;ruijing.dong@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 6e0d2fde3ae8fdb5b47e10389f23ed2cb4daec5d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit ec33964d9d88488fa954a03d476a8b811efc6e85 upstream.

8192x8192 is the maximum supported resolution.

Signed-off-by: David Rosca &lt;david.rosca@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Reviewed-by: Ruijing Dong &lt;ruijing.dong@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 6e0d2fde3ae8fdb5b47e10389f23ed2cb4daec5d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: Fix MPEG2, MPEG4 and VC1 video caps max size</title>
<updated>2025-03-28T21:04:58+00:00</updated>
<author>
<name>David Rosca</name>
<email>david.rosca@amd.com</email>
</author>
<published>2025-02-28T12:32:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1bbd76b775a3625e73746be112de80bc2f395720'/>
<id>1bbd76b775a3625e73746be112de80bc2f395720</id>
<content type='text'>
commit f0105e173103c9d30a2bb959f7399437d536c848 upstream.

1920x1088 is the maximum supported resolution.

Signed-off-by: David Rosca &lt;david.rosca@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Reviewed-by: Ruijing Dong &lt;ruijing.dong@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 1a0807feb97082bff2b1342dbbe55a2a9a8bdb88)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit f0105e173103c9d30a2bb959f7399437d536c848 upstream.

1920x1088 is the maximum supported resolution.

Signed-off-by: David Rosca &lt;david.rosca@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Reviewed-by: Ruijing Dong &lt;ruijing.dong@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 1a0807feb97082bff2b1342dbbe55a2a9a8bdb88)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: Remove JPEG from vega and carrizo video caps</title>
<updated>2025-03-28T21:04:57+00:00</updated>
<author>
<name>David Rosca</name>
<email>david.rosca@amd.com</email>
</author>
<published>2025-02-28T13:12:10+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1e9e79738e16e8d4f36f9536504e515fd149546c'/>
<id>1e9e79738e16e8d4f36f9536504e515fd149546c</id>
<content type='text'>
commit 7fc0765208502e53297ce72c49ca43729f9d6ff3 upstream.

JPEG is only supported for VCN1+.

Signed-off-by: David Rosca &lt;david.rosca@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Reviewed-by: Ruijing Dong &lt;ruijing.dong@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 0a6e7b06bdbead2e43d56a2274b7e0c9c86d536e)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 7fc0765208502e53297ce72c49ca43729f9d6ff3 upstream.

JPEG is only supported for VCN1+.

Signed-off-by: David Rosca &lt;david.rosca@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Reviewed-by: Ruijing Dong &lt;ruijing.dong@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 0a6e7b06bdbead2e43d56a2274b7e0c9c86d536e)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu/pm: wire up hwmon fan speed for smu 14.0.2</title>
<updated>2025-03-28T21:04:57+00:00</updated>
<author>
<name>Alex Deucher</name>
<email>alexander.deucher@amd.com</email>
</author>
<published>2025-03-11T14:34:36+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=2f75e02b0b662c07ba5297cb4441605abacea847'/>
<id>2f75e02b0b662c07ba5297cb4441605abacea847</id>
<content type='text'>
commit 5ca0040ecfe8ba0dee9df1f559e8d7587f12bf89 upstream.

Add callbacks for fan speed fetching.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4034
Reviewed-by: Kenneth Feng &lt;kenneth.feng@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 90df6db62fa78a8ab0b705ec38db99c7973b95d6)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 5ca0040ecfe8ba0dee9df1f559e8d7587f12bf89 upstream.

Add callbacks for fan speed fetching.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4034
Reviewed-by: Kenneth Feng &lt;kenneth.feng@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 90df6db62fa78a8ab0b705ec38db99c7973b95d6)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu/pm: Handle SCLK offset correctly in overdrive for smu 14.0.2</title>
<updated>2025-03-28T21:04:57+00:00</updated>
<author>
<name>Tomasz Pakuła</name>
<email>tomasz.pakula.oficjalny@gmail.com</email>
</author>
<published>2025-03-11T21:38:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b24f679fae3ca0403e55bfa00815f5ae4925d37c'/>
<id>b24f679fae3ca0403e55bfa00815f5ae4925d37c</id>
<content type='text'>
commit d9d4cb224e4140f51847642aa5a4a5c3eb998af0 upstream.

Currently, it seems like the code was carried over from RDNA3 because
it assumes two possible values to set. RDNA4, instead of having:
0: min SCLK
1: max SCLK
only has
0: SCLK offset

This change makes it so it only reports current offset value instead of
showing possible min/max values and their indices. Moreover, it now only
accepts the offset as a value, without the indice index.

Additionally, the lower bound was printed as %u by mistake.

Old:
OD_SCLK_OFFSET:
0: -500Mhz
1: 1000Mhz
OD_MCLK:
0: 97Mhz
1: 1259MHz
OD_VDDGFX_OFFSET:
0mV
OD_RANGE:
SCLK_OFFSET:    -500Mhz       1000Mhz
MCLK:      97Mhz       1500Mhz
VDDGFX_OFFSET:    -200mv          0mv

New:
OD_SCLK_OFFSET:
0Mhz
OD_MCLK:
0: 97Mhz
1: 1259MHz
OD_VDDGFX_OFFSET:
0mV
OD_RANGE:
SCLK_OFFSET:    -500Mhz       1000Mhz
MCLK:      97Mhz       1500Mhz
VDDGFX_OFFSET:    -200mv          0mv

Setting this offset:
Old: "s 1 &lt;offset&gt;"
New: "s &lt;offset&gt;"

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4036
Reviewed-by: Yang Wang &lt;kevinyang.wang@amd.com&gt;
Signed-off-by: Tomasz Pakuła &lt;tomasz.pakula.oficjalny@gmail.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 1cfeb60e6e8837b1de5eb4e17df7cf31f4442144)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit d9d4cb224e4140f51847642aa5a4a5c3eb998af0 upstream.

Currently, it seems like the code was carried over from RDNA3 because
it assumes two possible values to set. RDNA4, instead of having:
0: min SCLK
1: max SCLK
only has
0: SCLK offset

This change makes it so it only reports current offset value instead of
showing possible min/max values and their indices. Moreover, it now only
accepts the offset as a value, without the indice index.

Additionally, the lower bound was printed as %u by mistake.

Old:
OD_SCLK_OFFSET:
0: -500Mhz
1: 1000Mhz
OD_MCLK:
0: 97Mhz
1: 1259MHz
OD_VDDGFX_OFFSET:
0mV
OD_RANGE:
SCLK_OFFSET:    -500Mhz       1000Mhz
MCLK:      97Mhz       1500Mhz
VDDGFX_OFFSET:    -200mv          0mv

New:
OD_SCLK_OFFSET:
0Mhz
OD_MCLK:
0: 97Mhz
1: 1259MHz
OD_VDDGFX_OFFSET:
0mV
OD_RANGE:
SCLK_OFFSET:    -500Mhz       1000Mhz
MCLK:      97Mhz       1500Mhz
VDDGFX_OFFSET:    -200mv          0mv

Setting this offset:
Old: "s 1 &lt;offset&gt;"
New: "s &lt;offset&gt;"

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4036
Reviewed-by: Yang Wang &lt;kevinyang.wang@amd.com&gt;
Signed-off-by: Tomasz Pakuła &lt;tomasz.pakula.oficjalny@gmail.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 1cfeb60e6e8837b1de5eb4e17df7cf31f4442144)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: Restore uncached behaviour on GFX12</title>
<updated>2025-03-28T21:04:57+00:00</updated>
<author>
<name>David Belanger</name>
<email>david.belanger@amd.com</email>
</author>
<published>2024-07-02T21:56:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=7611d52371592041367fd88e5ad7c863e4ba9a63'/>
<id>7611d52371592041367fd88e5ad7c863e4ba9a63</id>
<content type='text'>
commit 35b6162bb790555ad56b7f0d120e307b8334d778 upstream.

Always use MTYPE_UC if UNCACHED flag is specified.

This makes kernarg region uncached and it restores
usermode cache disable debug flag functionality.

Do not set MTYPE_UC for COHERENT flag, on GFX12 coherence is handled by
shader code.

Signed-off-by: David Belanger &lt;david.belanger@amd.com&gt;
Reviewed-by: Felix Kuehling &lt;felix.kuehling@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit eb6cdfb807d038d9b9986b5c87188f28a4071eae)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 35b6162bb790555ad56b7f0d120e307b8334d778 upstream.

Always use MTYPE_UC if UNCACHED flag is specified.

This makes kernarg region uncached and it restores
usermode cache disable debug flag functionality.

Do not set MTYPE_UC for COHERENT flag, on GFX12 coherence is handled by
shader code.

Signed-off-by: David Belanger &lt;david.belanger@amd.com&gt;
Reviewed-by: Felix Kuehling &lt;felix.kuehling@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit eb6cdfb807d038d9b9986b5c87188f28a4071eae)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/pm: add unique_id for gfx12</title>
<updated>2025-03-28T21:04:57+00:00</updated>
<author>
<name>Harish Kasiviswanathan</name>
<email>Harish.Kasiviswanathan@amd.com</email>
</author>
<published>2025-03-11T18:15:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=aa8e2f3e6d1327991c412d8cba2477b8c1c084fa'/>
<id>aa8e2f3e6d1327991c412d8cba2477b8c1c084fa</id>
<content type='text'>
commit 19b53f96856b5316ee1fd6ca485af0889e001677 upstream.

Expose unique_id for gfx12

Signed-off-by: Harish Kasiviswanathan &lt;Harish.Kasiviswanathan@amd.com&gt;
Reviewed-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 16fbc18cb07470cd33fb5f37ad181b51583e6dc0)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 19b53f96856b5316ee1fd6ca485af0889e001677 upstream.

Expose unique_id for gfx12

Signed-off-by: Harish Kasiviswanathan &lt;Harish.Kasiviswanathan@amd.com&gt;
Reviewed-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 16fbc18cb07470cd33fb5f37ad181b51583e6dc0)
Cc: stable@vger.kernel.org # 6.12.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: Use HW lock mgr for PSR1 when only one eDP</title>
<updated>2025-03-28T21:04:57+00:00</updated>
<author>
<name>Mario Limonciello</name>
<email>mario.limonciello@amd.com</email>
</author>
<published>2025-03-07T21:55:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5223201c3425086cc128cb525cff0f19867b13ff'/>
<id>5223201c3425086cc128cb525cff0f19867b13ff</id>
<content type='text'>
commit acbf16a6ae775b4db86f537448cc466288aa307e upstream.

[WHY]
DMUB locking is important to make sure that registers aren't accessed
while in PSR.  Previously it was enabled but caused a deadlock in
situations with multiple eDP panels.

[HOW]
Detect if multiple eDP panels are in use to decide whether to use
lock. Refactor the function so that the first check is for PSR-SU
and then replay is in use to prevent having to look up number
of eDP panels for those configurations.

Fixes: f245b400a223 ("Revert "drm/amd/display: Use HW lock mgr for PSR1"")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3965
Reviewed-by: ChiaHsuan Chung &lt;chiahsuan.chung@amd.com&gt;
Signed-off-by: Mario Limonciello &lt;mario.limonciello@amd.com&gt;
Signed-off-by: Alex Hung &lt;alex.hung@amd.com&gt;
Tested-by: Daniel Wheeler &lt;daniel.wheeler@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit ed569e1279a3045d6b974226c814e071fa0193a6)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
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commit acbf16a6ae775b4db86f537448cc466288aa307e upstream.

[WHY]
DMUB locking is important to make sure that registers aren't accessed
while in PSR.  Previously it was enabled but caused a deadlock in
situations with multiple eDP panels.

[HOW]
Detect if multiple eDP panels are in use to decide whether to use
lock. Refactor the function so that the first check is for PSR-SU
and then replay is in use to prevent having to look up number
of eDP panels for those configurations.

Fixes: f245b400a223 ("Revert "drm/amd/display: Use HW lock mgr for PSR1"")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3965
Reviewed-by: ChiaHsuan Chung &lt;chiahsuan.chung@amd.com&gt;
Signed-off-by: Mario Limonciello &lt;mario.limonciello@amd.com&gt;
Signed-off-by: Alex Hung &lt;alex.hung@amd.com&gt;
Tested-by: Daniel Wheeler &lt;daniel.wheeler@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit ed569e1279a3045d6b974226c814e071fa0193a6)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
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