It's useful for syncing async connector work like link retraining.
Cc: Manasi Navare manasi.d.navare@intel.com Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Ville Syrjälä ville.syrjala@linux.intel.com Signed-off-by: Daniel Vetter daniel.vetter@intel.com --- drivers/gpu/drm/drm_atomic_helper.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 71d712f1b56a..ea781d55f2c1 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -1791,7 +1791,8 @@ int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, if (new_conn_state->crtc) continue;
- commit = crtc_or_fake_commit(state, old_conn_state->crtc); + /* Always track connectors explicitly for e.g. link retraining. */ + commit = crtc_or_fake_commit(state, new_conn_state->crtc ?: old_conn_state->crtc); if (!commit) return -ENOMEM;
@@ -1805,10 +1806,7 @@ int drm_atomic_helper_setup_commit(struct drm_atomic_state *state, !try_wait_for_completion(&old_plane_state->commit->flip_done)) return -EBUSY;
- /* - * Unlike connectors, always track planes explicitly for - * async pageflip support. - */ + /* Always track planes explicitly for async pageflip support. */ commit = crtc_or_fake_commit(state, new_plane_state->crtc ?: old_plane_state->crtc); if (!commit) return -ENOMEM;