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From: Mario Limonciello <mario.limonciello@amd.com>
To: stable@vger.kernel.org
Subject: Fix regression on Stoney
Date: Sun, 2 Jul 2023 08:12:15 -0500	[thread overview]
Message-ID: <9ef5921a-2382-b006-75fe-1613ac727dc7@amd.com> (raw)

Hi,

A regression [1] was reported on suspend for AMD Stoney on 6.3.10.
It bisected down to:

1ca399f127e0 ("drm/amd/display: Add wrapper to call planes and stream 
update")

This was requested by me to fix a PSR problem [2], which isn't used on 
Stoney.

This was also backported into 6.1.36 (as e538342002cb) and 5.15.119 (as 
3c1aa91b37f9).

It's fixed on 6.3.y by cherry-picking:

32953485c558 ("drm/amd/display: Do not update DRR while BW optimizations 
pending")

It's fixed in 6.1.y by cherry-picking:

3442f4e0e555 ("drm/amd/display: Remove optimization for VRR updates")
32953485c558 ("drm/amd/display: Do not update DRR while BW optimizations 
pending")

On 5.15.y it's not a reasonable backport to take the fix to stable 
because there is a lot of missing Freesync code.  Instead it's better to 
revert the patch series that introduced it to 5.15.y because PSR-SU 
isn't even introduced until later kernels anyway.

5a24be76af79 ("drm/amd/display: fix the system hang while disable PSR")
3c1aa91b37f9 ("drm/amd/display: Add wrapper to call planes and stream 
update")
eea850c025b5 ("drm/amd/display: Use dc_update_planes_and_stream")
97ca308925a5 ("drm/amd/display: Add minimal pipe split transition state")

[1] https://gitlab.freedesktop.org/drm/amd/-/issues/2670
[2] 
https://lore.kernel.org/stable/e2ae2999-2e39-31ad-198a-26ab3ae53ae7@amd.com/

Thanks,


             reply	other threads:[~2023-07-02 13:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-02 13:12 Mario Limonciello [this message]
2023-07-02 13:41 ` Fix regression on Stoney Greg KH

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