Questions about KMS flip

[Harry Wentland]

+Nick

It looks to be the old drm_plane_state->fb holds that reference. See dm_plane_helper_cleanup_fb() in amdgpu_dm.c.

Harry

On 2021-11-04 08:51, Christian König wrote:
> Hi guys,
> 
> adding the usual suspects which might know that of hand: When we do a KMS page flip, who keeps the reference to the BO while it is scanned out?
> 
> We are running into warning backtraces from TTM which look more than odd.
> 
> Thanks,
> Christian.