Re: [Intel-gfx] [RESEND RFC 08/18] drm/display/dp_mst: Add nonblocking helpers for DP MST

2022-06-29 Thread Jani Nikula
On Tue, 07 Jun 2022, Lyude Paul wrote: > As Daniel Vetter pointed out, if we only use the atomic modesetting locks > with MST it's technically possible for a driver with non-blocking modesets > to race when it comes to MST displays - as we make the mistake of not doing > our own CRTC commit

[Intel-gfx] [RESEND RFC 08/18] drm/display/dp_mst: Add nonblocking helpers for DP MST

2022-06-07 Thread Lyude Paul
As Daniel Vetter pointed out, if we only use the atomic modesetting locks with MST it's technically possible for a driver with non-blocking modesets to race when it comes to MST displays - as we make the mistake of not doing our own CRTC commit tracking in the topology_state object. This could