In intel_dp_mst_atomic_master_trans_check(), we pull connectors
sharing the same DP-MST stream into the atomic state. However,
if the connector is unregistered, this later fails with:
[ 559.425658] i915 0000:00:02.0: [drm:drm_atomic_helper_check_modeset] [CONNECTOR:378:DP-7] is not registered
Skip these unregistered connectors to allow user-space to turn them
off.
Fixes part of this wlroots issue:
https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3407
Signed-off-by: Simon Ser <contact@xxxxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Lyude Paul <lyude@xxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index f773e117ebc4..70859a927a9d 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -280,7 +280,8 @@ intel_dp_mst_atomic_master_trans_check(struct intel_connector *connector,
struct intel_crtc *crtc;
if (connector_iter->mst_port != connector->mst_port ||
- connector_iter == connector)
+ connector_iter == connector ||
+ connector_iter->base.registration_state == DRM_CONNECTOR_UNREGISTERED)
continue;
conn_iter_state = intel_atomic_get_digital_connector_state(state,
--
2.39.0
