Commit 4b8878ee authored by Imre Deak's avatar Imre Deak Committed by Maarten Lankhorst
Browse files

drm/dp_mst: Don't cache EDIDs for physical ports 



Caching EDIDs for physical ports prevents updating the EDID if a port
gets reconnected via a Connection Status Notification message, fix this.

Fixes: db1a0795 ("drm/dp_mst: Handle SST-only branch device case")
Cc: Wayne Lin <Wayne.Lin@amd.com>
Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Reviewed-by: default avatarLyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210201120145.350258-2-imre.deak@intel.com


(cherry picked from commit 46809153)
Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
parent 8d0cb886

drivers/gpu/drm/drm_dp_mst_topology.c

+2 −1
Original line number Diff line number Diff line
@@ -2302,7 +2302,8 @@ drm_dp_mst_port_add_connector(struct drm_dp_mst_branch *mstb, 
	}



	if (port->pdt != DP_PEER_DEVICE_NONE &&

	    drm_dp_mst_is_end_device(port->pdt, port->mcs)) {

	    drm_dp_mst_is_end_device(port->pdt, port->mcs) &&

	    port->port_num >= DP_MST_LOGICAL_PORT_0) {

		port->cached_edid = drm_get_edid(port->connector,

						 &port->aux.ddc);

		drm_connector_set_tile_property(port->connector);