drm/amdgpu: fix ring test failure issue during s3 in vce 3.0 (V2)
[What] vce ring test fails consistently during resume in s3 cycle, due to mismatch read & write pointers. On debug/analysis its found that rptr to be compared is not being correctly updated/read, which leads to this failure. Below is the failure signature: [drm:amdgpu_vce_ring_test_ring] *ERROR* amdgpu: ring 12 test failed [drm:amdgpu_device_ip_resume_phase2] *ERROR* resume of IP block <vce_v3_0> failed -110 [drm:amdgpu_device_resume] *ERROR* amdgpu_device_ip_resume failed (-110). [How] fetch rptr appropriately, meaning move its read location further down in the code flow. With this patch applied the s3 failure is no more seen for >5k s3 cycles, which otherwise is pretty consistent. V2: remove reduntant fetch of rptr Signed-off-by:Louis Li <Ching-shih.Li@amd.com> Reviewed-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
parent
2a3e0b71
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