drm/amdgpu/umsch: don't execute umsch test when GPU is in reset/suspend

umsch test needs full GPU functionality(e.g., VM update, TLB flush,
possibly buffer moving under memory pressure) which may be not ready
under these states. Just skip it to avoid potential issues.

Signed-off-by: Lang Yu <[email protected]>
Reviewed-by: Christian König <[email protected]>
Reviewed-by: Veerabadhran Gopalakrishnan <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]

Author: Lang Yu

drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c

@@ -774,6 +774,9 @@ static int umsch_mm_late_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	if (amdgpu_in_reset(adev) || adev->in_s0ix || adev->in_suspend)
+		return 0;
+
 	return umsch_mm_test(adev);
 }