On 25/11/2020 11:07, Daniel Vetter wrote: >> Laurent, does this ring any bells? The WARN comes in drm_atomic_bridge_chain_enable() when >> drm_atomic_get_old_bridge_state() returns null for (presumably) sdi bridge. >> >> I'm not sure why the bridge state would not be there. > > Lack of state on first modeset usually means your > drm_mode_config_reset didn't create one. Or whatever it is you're > using. I didn't look whether you're wiring this up correctly or not. > We might even want to add a ->reset function to > drm_private_state_funcs to make this work for everyone. The bridge driver set atomic_enable and atomic_disable, but no other atomic funcs. It was supposed to set the legacy enable & disable. Tomi -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
