Re: [PATCH] drm/amd/display: Fix error handling on waiting for completion

[ Adding dri-devel ]

On 2021-11-01 16:00, Wang, Chao-kai (Stylon) wrote:

The problem with -ERESTARTSYS is the same half-baked atomic state with modifications we made in the interrupted atomic check, is reused in the next retry and fails the atomic check. What we expect in the next retry is with the original atomic state. I am going to dig deeper and see if at DRM side we can go back to use to the original atomic state in the retry.

I suspect either DC/DM needs to be able to handle the modified state on retry, or it needs to restore the original state before it returns -ERESTARTSYS.