diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_crtc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c index 492347bd0e9d..e233ec9d1ba8 100644 --- a/drivers/gpu/drm/i915/display/intel_crtc.c +++ b/drivers/gpu/drm/i915/display/intel_crtc.c @@ -516,8 +516,11 @@ static void intel_crtc_vblank_evade_scanlines(struct intel_atomic_state *state, * M/N and TRANS_VTOTAL are double buffered on the transcoder's * undelayed vblank, so with seamless M/N and LRR we must evade * both vblanks. + * + * DSB execution waits for the transcoder's undelayed vblank, + * hence we must kick off the commit before that. */ - if (new_crtc_state->update_m_n || new_crtc_state->update_lrr) + if (new_crtc_state->dsb || new_crtc_state->update_m_n || new_crtc_state->update_lrr) *min -= adjusted_mode->crtc_vblank_start - adjusted_mode->crtc_vdisplay; } |