ACK: [PATCH 0/1][SRU][OEM-5.14] Fix for rare suspend (s0ix) failures on AMD systems

Tim Gardner tim.gardner at canonical.com
Wed Jan 12 16:55:56 UTC 2022


Acked-by: Tim Gardner <tim.gardner at canonical.com>

On 1/4/22 12:38 PM, Alex Hung wrote:
> BugLink: https://bugs.launchpad.net/bugs/1956373
> 
> [Impact]
> 
>    A rare (~1%) failure has been reported in the community for a period of time
>    on Renoir platforms with s0ix. This failure was also corroborated once by
>    a Cezanne user.
> 
> [Fix]
> 
>    In the s0ix entry need retain gfx in the gfxoff state, so skipping setting
>    gfx cgpg in the S0ix suspend-resume process.
> 
>    The fix was cherry-picked from 5.16-rc8.
> 
> [Test]
> 
>    This is requested by AMD.
> 
> [Where problems could occur]
> 
>    Low risk. This only affects AMD systems that support s0ix.
> 
> Prike Liang (1):
>    drm/amd/pm: skip setting gfx cgpg in the s0ix suspend-resume
> 
>   drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c      | 7 ++-----
>   drivers/gpu/drm/amd/pm/swsmu/smu12/smu_v12_0.c | 3 ++-
>   2 files changed, 4 insertions(+), 6 deletions(-)
> 

-- 
-----------
Tim Gardner
Canonical, Inc



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