[Bug 211277] sometimes crash at s2ram-wake (Ryzen 3500U): amdgpu, drm, commit_tail, amdgpu_dm_atomic_commit_tail

https://bugzilla.kernel.org/show_bug.cgi?id=211277

--- Comment #44 from James Zhu (jamesz@amd.com) --- Created attachment 298651 --> https://bugzilla.kernel.org/attachment.cgi?id=298651&action=edit A workaround for suspend/resume hung issue

The VCN block passed all ring tests, usually the vcn will get into idle within 1 sec. Somehow it affected later amd iommu device resume which is controlled by kfd resume. This workaround is to gate vcn block immediately when ring test passed. It can fix the suspend/resume hung issue.

Hi kolAflash, Please help check the WA in your setup. I will continue working on root cause. thanks! James