From: Lyude Paul lyude@redhat.com
commit 688f3d1ebedffa310b6591bd1b63fa0770d945fe upstream.
I'm not entirely sure why this is, but for some reason:
921935dc6404 ("drm/amd/powerplay: enforce display related settings only on needed")
Breaks runtime PM resume on the Radeon PRO WX 3100 (Lexa) in one the pre-production laptops I have. The issue manifests as the following messages in dmesg:
[drm] UVD and UVD ENC initialized successfully. amdgpu 0000:3b:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring vce1 test failed (-110) [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <vce_v3_0> failed -110 [drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_device_ip_resume failed (-110).
And happens after about 6-10 runtime PM suspend/resume cycles (sometimes sooner, if you're lucky!). Unfortunately I can't seem to pin down precisely which part in psm_adjust_power_state_dynamic that is causing the issue, but not skipping the display setting setup seems to fix it. Hopefully if there is a better fix for this, this patch will spark discussion around it.
Fixes: 921935dc6404 ("drm/amd/powerplay: enforce display related settings only on needed") Cc: Evan Quan evan.quan@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: Huang Rui ray.huang@amd.com Cc: Rex Zhu Rex.Zhu@amd.com Cc: Likun Gao Likun.Gao@amd.com Cc: stable@vger.kernel.org # v5.1+ Signed-off-by: Lyude Paul lyude@redhat.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c @@ -325,7 +325,7 @@ int hwmgr_resume(struct pp_hwmgr *hwmgr) if (ret) return ret;
- ret = psm_adjust_power_state_dynamic(hwmgr, true, NULL); + ret = psm_adjust_power_state_dynamic(hwmgr, false, NULL);
return ret; }