Commit 25315ebf authored by Yingjie Wang's avatar Yingjie Wang Committed by Alex Deucher
Browse files

drm/radeon: Fix a missing check bug in radeon_dp_mst_detect() 



In radeon_dp_mst_detect(), We should check whether or not @connector
has been unregistered from userspace. If the connector is unregistered,
we should return disconnected status.

Fixes: 9843ead0 ("drm/radeon: add DisplayPort MST support (v2)")
Signed-off-by: default avatarYingjie Wang <wangyingjie55@126.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a3fe0e33

drivers/gpu/drm/radeon/radeon_dp_mst.c

+3 −0
Original line number Diff line number Diff line
@@ -241,6 +241,9 @@ radeon_dp_mst_detect(struct drm_connector *connector, 
		to_radeon_connector(connector);

	struct radeon_connector *master = radeon_connector->mst_port;



	if (drm_connector_is_unregistered(connector))

		return connector_status_disconnected;



	return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr,

				      radeon_connector->port);

}