<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers, branch v6.1.76</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>net/mlx5e: Handle hardware IPsec limits events</title>
<updated>2024-02-01T00:17:12+00:00</updated>
<author>
<name>Leon Romanovsky</name>
<email>leonro@nvidia.com</email>
</author>
<published>2022-12-02T20:14:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d7dc6a860491f716389c9c876a10ed90bff45955'/>
<id>d7dc6a860491f716389c9c876a10ed90bff45955</id>
<content type='text'>
commit 8c582ddfbb473c1d799c40b5140aed81278e2837 upstream.

Enable object changed event to signal IPsec about hitting
soft and hard limits.

Signed-off-by: Leon Romanovsky &lt;leonro@nvidia.com&gt;
Signed-off-by: Steffen Klassert &lt;steffen.klassert@secunet.com&gt;
Cc: Florian Fainelli &lt;f.fainelli@gmail.com&gt;
Cc: Naresh Kamboju &lt;naresh.kamboju@linaro.org&gt;
[ only take the #ifdef movement portion of the commit to resolve some 6.1.y
  build errors - gregkh ]
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 8c582ddfbb473c1d799c40b5140aed81278e2837 upstream.

Enable object changed event to signal IPsec about hitting
soft and hard limits.

Signed-off-by: Leon Romanovsky &lt;leonro@nvidia.com&gt;
Signed-off-by: Steffen Klassert &lt;steffen.klassert@secunet.com&gt;
Cc: Florian Fainelli &lt;f.fainelli@gmail.com&gt;
Cc: Naresh Kamboju &lt;naresh.kamboju@linaro.org&gt;
[ only take the #ifdef movement portion of the commit to resolve some 6.1.y
  build errors - gregkh ]
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>cxl/region：Fix overflow issue in alloc_hpa()</title>
<updated>2024-02-01T00:17:12+00:00</updated>
<author>
<name>Quanquan Cao</name>
<email>caoqq@fujitsu.com</email>
</author>
<published>2024-01-24T09:15:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ec745eeff4d2824e983f6f00bbff2a8a8003972b'/>
<id>ec745eeff4d2824e983f6f00bbff2a8a8003972b</id>
<content type='text'>
commit d76779dd3681c01a4c6c3cae4d0627c9083e0ee6 upstream.

Creating a region with 16 memory devices caused a problem. The div_u64_rem
function, used for dividing an unsigned 64-bit number by a 32-bit one,
faced an issue when SZ_256M * p-&gt;interleave_ways. The result surpassed
the maximum limit of the 32-bit divisor (4G), leading to an overflow
and a remainder of 0.
note: At this point, p-&gt;interleave_ways is 16, meaning 16 * 256M = 4G

To fix this issue, I replaced the div_u64_rem function with div64_u64_rem
and adjusted the type of the remainder.

Signed-off-by: Quanquan Cao &lt;caoqq@fujitsu.com&gt;
Reviewed-by: Dave Jiang &lt;dave.jiang@intel.com&gt;
Fixes: 23a22cd1c98b ("cxl/region: Allocate HPA capacity to regions")
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Dan Williams &lt;dan.j.williams@intel.com&gt;
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 d76779dd3681c01a4c6c3cae4d0627c9083e0ee6 upstream.

Creating a region with 16 memory devices caused a problem. The div_u64_rem
function, used for dividing an unsigned 64-bit number by a 32-bit one,
faced an issue when SZ_256M * p-&gt;interleave_ways. The result surpassed
the maximum limit of the 32-bit divisor (4G), leading to an overflow
and a remainder of 0.
note: At this point, p-&gt;interleave_ways is 16, meaning 16 * 256M = 4G

To fix this issue, I replaced the div_u64_rem function with div64_u64_rem
and adjusted the type of the remainder.

Signed-off-by: Quanquan Cao &lt;caoqq@fujitsu.com&gt;
Reviewed-by: Dave Jiang &lt;dave.jiang@intel.com&gt;
Fixes: 23a22cd1c98b ("cxl/region: Allocate HPA capacity to regions")
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Dan Williams &lt;dan.j.williams@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>spi: fix finalize message on error return</title>
<updated>2024-02-01T00:17:12+00:00</updated>
<author>
<name>David Lechner</name>
<email>dlechner@baylibre.com</email>
</author>
<published>2024-01-25T20:53:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b086f6d979773315426ed7aabe3be02127664d25'/>
<id>b086f6d979773315426ed7aabe3be02127664d25</id>
<content type='text'>
[ Upstream commit 8c2ae772fe08e33f3d7a83849e85539320701abd ]

In __spi_pump_transfer_message(), the message was not finalized in the
first error return as it is in the other error return paths. Not
finalizing the message could cause anything waiting on the message to
complete to hang forever.

This adds the missing call to spi_finalize_current_message().

Fixes: ae7d2346dc89 ("spi: Don't use the message queue if possible in spi_sync")
Signed-off-by: David Lechner &lt;dlechner@baylibre.com&gt;
Link: https://msgid.link/r/20240125205312.3458541-2-dlechner@baylibre.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 8c2ae772fe08e33f3d7a83849e85539320701abd ]

In __spi_pump_transfer_message(), the message was not finalized in the
first error return as it is in the other error return paths. Not
finalizing the message could cause anything waiting on the message to
complete to hang forever.

This adds the missing call to spi_finalize_current_message().

Fixes: ae7d2346dc89 ("spi: Don't use the message queue if possible in spi_sync")
Signed-off-by: David Lechner &lt;dlechner@baylibre.com&gt;
Link: https://msgid.link/r/20240125205312.3458541-2-dlechner@baylibre.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>spi: bcm-qspi: fix SFDP BFPT read by usig mspi read</title>
<updated>2024-02-01T00:17:12+00:00</updated>
<author>
<name>Kamal Dasu</name>
<email>kamal.dasu@broadcom.com</email>
</author>
<published>2024-01-09T21:00:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=598af91f622bab00342cd38f7514add9400d20cf'/>
<id>598af91f622bab00342cd38f7514add9400d20cf</id>
<content type='text'>
[ Upstream commit 574bf7bbe83794a902679846770f75a9b7f28176 ]

SFDP read shall use the mspi reads when using the bcm_qspi_exec_mem_op()
call. This fixes SFDP parameter page read failures seen with parts that
now use SFDP protocol to read the basic flash parameter table.

Fixes: 5f195ee7d830 ("spi: bcm-qspi: Implement the spi_mem interface")
Signed-off-by: Kamal Dasu &lt;kamal.dasu@broadcom.com&gt;
Tested-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Reviewed-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Link: https://msgid.link/r/20240109210033.43249-1-kamal.dasu@broadcom.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 574bf7bbe83794a902679846770f75a9b7f28176 ]

SFDP read shall use the mspi reads when using the bcm_qspi_exec_mem_op()
call. This fixes SFDP parameter page read failures seen with parts that
now use SFDP protocol to read the basic flash parameter table.

Fixes: 5f195ee7d830 ("spi: bcm-qspi: Implement the spi_mem interface")
Signed-off-by: Kamal Dasu &lt;kamal.dasu@broadcom.com&gt;
Tested-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Reviewed-by: Florian Fainelli &lt;florian.fainelli@broadcom.com&gt;
Link: https://msgid.link/r/20240109210033.43249-1-kamal.dasu@broadcom.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: anx7625: Ensure bridge is suspended in disable()</title>
<updated>2024-02-01T00:17:11+00:00</updated>
<author>
<name>Hsin-Yi Wang</name>
<email>hsinyi@chromium.org</email>
</author>
<published>2024-01-18T01:58:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a2fa86e2bb67769e2a53bfeb95956137069071dc'/>
<id>a2fa86e2bb67769e2a53bfeb95956137069071dc</id>
<content type='text'>
[ Upstream commit 4d5b7daa3c610af3f322ad1e91fc0c752ff32f0e ]

Similar to commit 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge
is suspended in .post_disable()"). Add a mutex to ensure that aux transfer
won't race with atomic_disable by holding the PM reference and prevent
the bridge from suspend.

Also we need to use pm_runtime_put_sync_suspend() to suspend the bridge
instead of idle with pm_runtime_put_sync().

Fixes: 3203e497eb76 ("drm/bridge: anx7625: Synchronously run runtime suspend.")
Fixes: adca62ec370c ("drm/bridge: anx7625: Support reading edid through aux channel")
Signed-off-by: Hsin-Yi Wang &lt;hsinyi@chromium.org&gt;
Tested-by: Xuxin Xiong &lt;xuxinxiong@huaqin.corp-partner.google.com&gt;
Reviewed-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240118015916.2296741-1-hsinyi@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 4d5b7daa3c610af3f322ad1e91fc0c752ff32f0e ]

Similar to commit 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge
is suspended in .post_disable()"). Add a mutex to ensure that aux transfer
won't race with atomic_disable by holding the PM reference and prevent
the bridge from suspend.

Also we need to use pm_runtime_put_sync_suspend() to suspend the bridge
instead of idle with pm_runtime_put_sync().

Fixes: 3203e497eb76 ("drm/bridge: anx7625: Synchronously run runtime suspend.")
Fixes: adca62ec370c ("drm/bridge: anx7625: Support reading edid through aux channel")
Signed-off-by: Hsin-Yi Wang &lt;hsinyi@chromium.org&gt;
Tested-by: Xuxin Xiong &lt;xuxinxiong@huaqin.corp-partner.google.com&gt;
Reviewed-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240118015916.2296741-1-hsinyi@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>gpio: eic-sprd: Clear interrupt after set the interrupt type</title>
<updated>2024-02-01T00:17:11+00:00</updated>
<author>
<name>Wenhua Lin</name>
<email>Wenhua.Lin@unisoc.com</email>
</author>
<published>2024-01-09T07:38:48+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=4b84411165f841b1feb7c21a4db72c8211e1aa58'/>
<id>4b84411165f841b1feb7c21a4db72c8211e1aa58</id>
<content type='text'>
[ Upstream commit 84aef4ed59705585d629e81d633a83b7d416f5fb ]

The raw interrupt status of eic maybe set before the interrupt is enabled,
since the eic interrupt has a latch function, which would trigger the
interrupt event once enabled it from user side. To solve this problem,
interrupts generated before setting the interrupt trigger type are ignored.

Fixes: 25518e024e3a ("gpio: Add Spreadtrum EIC driver support")
Acked-by: Chunyan Zhang &lt;zhang.lyra@gmail.com&gt;
Signed-off-by: Wenhua Lin &lt;Wenhua.Lin@unisoc.com&gt;
Signed-off-by: Bartosz Golaszewski &lt;bartosz.golaszewski@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 84aef4ed59705585d629e81d633a83b7d416f5fb ]

The raw interrupt status of eic maybe set before the interrupt is enabled,
since the eic interrupt has a latch function, which would trigger the
interrupt event once enabled it from user side. To solve this problem,
interrupts generated before setting the interrupt trigger type are ignored.

Fixes: 25518e024e3a ("gpio: Add Spreadtrum EIC driver support")
Acked-by: Chunyan Zhang &lt;zhang.lyra@gmail.com&gt;
Signed-off-by: Wenhua Lin &lt;Wenhua.Lin@unisoc.com&gt;
Signed-off-by: Bartosz Golaszewski &lt;bartosz.golaszewski@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/exynos: gsc: minor fix for loop iteration in gsc_runtime_resume</title>
<updated>2024-02-01T00:17:11+00:00</updated>
<author>
<name>Fedor Pchelkin</name>
<email>pchelkin@ispras.ru</email>
</author>
<published>2023-12-20T09:53:15+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=23cf4cf4294f252d4ffbf25f1885eb23306e1557'/>
<id>23cf4cf4294f252d4ffbf25f1885eb23306e1557</id>
<content type='text'>
[ Upstream commit 4050957c7c2c14aa795dbf423b4180d5ac04e113 ]

Do not forget to call clk_disable_unprepare() on the first element of
ctx-&gt;clocks array.

Found by Linux Verification Center (linuxtesting.org).

Fixes: 8b7d3ec83aba ("drm/exynos: gsc: Convert driver to IPP v2 core API")
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Reviewed-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Signed-off-by: Inki Dae &lt;inki.dae@samsung.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 4050957c7c2c14aa795dbf423b4180d5ac04e113 ]

Do not forget to call clk_disable_unprepare() on the first element of
ctx-&gt;clocks array.

Found by Linux Verification Center (linuxtesting.org).

Fixes: 8b7d3ec83aba ("drm/exynos: gsc: Convert driver to IPP v2 core API")
Signed-off-by: Fedor Pchelkin &lt;pchelkin@ispras.ru&gt;
Reviewed-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Signed-off-by: Inki Dae &lt;inki.dae@samsung.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/exynos: fix accidental on-stack copy of exynos_drm_plane</title>
<updated>2024-02-01T00:17:11+00:00</updated>
<author>
<name>Arnd Bergmann</name>
<email>arnd@arndb.de</email>
</author>
<published>2023-12-14T12:32:15+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ba930885bfd250047f6e788614e5042f939f3f69'/>
<id>ba930885bfd250047f6e788614e5042f939f3f69</id>
<content type='text'>
[ Upstream commit 960b537e91725bcb17dd1b19e48950e62d134078 ]

gcc rightfully complains about excessive stack usage in the fimd_win_set_pixfmt()
function:

drivers/gpu/drm/exynos/exynos_drm_fimd.c: In function 'fimd_win_set_pixfmt':
drivers/gpu/drm/exynos/exynos_drm_fimd.c:750:1: error: the frame size of 1032 bytes is larger than 1024 byte
drivers/gpu/drm/exynos/exynos5433_drm_decon.c: In function 'decon_win_set_pixfmt':
drivers/gpu/drm/exynos/exynos5433_drm_decon.c:381:1: error: the frame size of 1032 bytes is larger than 1024 bytes

There is really no reason to copy the large exynos_drm_plane
structure to the stack before using one of its members, so just
use a pointer instead.

Fixes: 6f8ee5c21722 ("drm/exynos: fimd: Make plane alpha configurable")
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Reviewed-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Signed-off-by: Inki Dae &lt;inki.dae@samsung.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 960b537e91725bcb17dd1b19e48950e62d134078 ]

gcc rightfully complains about excessive stack usage in the fimd_win_set_pixfmt()
function:

drivers/gpu/drm/exynos/exynos_drm_fimd.c: In function 'fimd_win_set_pixfmt':
drivers/gpu/drm/exynos/exynos_drm_fimd.c:750:1: error: the frame size of 1032 bytes is larger than 1024 byte
drivers/gpu/drm/exynos/exynos5433_drm_decon.c: In function 'decon_win_set_pixfmt':
drivers/gpu/drm/exynos/exynos5433_drm_decon.c:381:1: error: the frame size of 1032 bytes is larger than 1024 bytes

There is really no reason to copy the large exynos_drm_plane
structure to the stack before using one of its members, so just
use a pointer instead.

Fixes: 6f8ee5c21722 ("drm/exynos: fimd: Make plane alpha configurable")
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Reviewed-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Signed-off-by: Inki Dae &lt;inki.dae@samsung.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: parade-ps8640: Make sure we drop the AUX mutex in the error case</title>
<updated>2024-02-01T00:17:11+00:00</updated>
<author>
<name>Douglas Anderson</name>
<email>dianders@chromium.org</email>
</author>
<published>2024-01-17T18:35:03+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c1cd4f9da526dfd34e5c4549aaaeec3fdd8c729e'/>
<id>c1cd4f9da526dfd34e5c4549aaaeec3fdd8c729e</id>
<content type='text'>
[ Upstream commit a20f1b02bafcbf5a32d96a1d4185d6981cf7d016 ]

After commit 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge
is suspended in .post_disable()"), if we hit the error case in
ps8640_aux_transfer() then we return without dropping the mutex. Fix
this oversight.

Fixes: 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge is suspended in .post_disable()")
Reviewed-by: Hsin-Yi Wang &lt;hsinyi@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240117103502.1.Ib726a0184913925efc7e99c4d4fc801982e1bc24@changeid
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit a20f1b02bafcbf5a32d96a1d4185d6981cf7d016 ]

After commit 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge
is suspended in .post_disable()"), if we hit the error case in
ps8640_aux_transfer() then we return without dropping the mutex. Fix
this oversight.

Fixes: 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge is suspended in .post_disable()")
Reviewed-by: Hsin-Yi Wang &lt;hsinyi@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240117103502.1.Ib726a0184913925efc7e99c4d4fc801982e1bc24@changeid
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: parade-ps8640: Ensure bridge is suspended in .post_disable()</title>
<updated>2024-02-01T00:17:11+00:00</updated>
<author>
<name>Pin-yen Lin</name>
<email>treapking@chromium.org</email>
</author>
<published>2024-01-09T12:04:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=6ba690e7f7a4c1fd29b6acf96e70463548d4b85a'/>
<id>6ba690e7f7a4c1fd29b6acf96e70463548d4b85a</id>
<content type='text'>
[ Upstream commit 26db46bc9c675e43230cc6accd110110a7654299 ]

The ps8640 bridge seems to expect everything to be power cycled at the
disable process, but sometimes ps8640_aux_transfer() holds the runtime
PM reference and prevents the bridge from suspend.

Prevent that by introducing a mutex lock between ps8640_aux_transfer()
and .post_disable() to make sure the bridge is really powered off.

Fixes: 826cff3f7ebb ("drm/bridge: parade-ps8640: Enable runtime power management")
Signed-off-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240109120528.1292601-1-treapking@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
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[ Upstream commit 26db46bc9c675e43230cc6accd110110a7654299 ]

The ps8640 bridge seems to expect everything to be power cycled at the
disable process, but sometimes ps8640_aux_transfer() holds the runtime
PM reference and prevents the bridge from suspend.

Prevent that by introducing a mutex lock between ps8640_aux_transfer()
and .post_disable() to make sure the bridge is really powered off.

Fixes: 826cff3f7ebb ("drm/bridge: parade-ps8640: Enable runtime power management")
Signed-off-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240109120528.1292601-1-treapking@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
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