ACK: [PATCH 0/1][SRU][OEM-5.14] Yellow Carp S0i3 stability fix

[Tim Gardner]

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

On 10/15/21 1:58 PM, Alex Hung wrote:
>    BugLink: https://bugs.launchpad.net/bugs/1945348
> 
> [Impact]
> 
>    Below errors are reported with S0i3 on Yellow carp where under stress testing with 5.14.0 through 5.14.8.
> 
> 
>    [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <sdma_v5_2> failed -110
>    amdgpu 0000:04:00.0: amdgpu: amdgpu_device_ip_resume failed (-110).
>    PM: dpm_run_callback(): pci_pm_resume+0x0/0x90 returns -110
>    amdgpu 0000:04:00.0: PM: failed to resume async: error -110
> 
> [Fix]
> 
>    The patch fixes this by forcing exit gfxoff for sdma resume.
> 
>    The patch is in 5.15-rc4 (https://github.com/torvalds/linux/commit/26db706a6d77b9e184feb11725e97e53b7a89519)
> 
> [Test]
> 
>    This is requested by AMD.
> 
> [Where problems could occur]
> 
>    Low risk. This only affects AMD platforms with s0ix supports. The changes repeat what is (should be) done in firmware.
> 
> Prike Liang (1):
>    drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix
> 
>   drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 

-- 
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Tim Gardner
Canonical, Inc