diff options
| author | Yingjie Wang <wangyingjie55@126.com> | 2021-04-06 20:10:04 -0700 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:58:23 -0400 |
| commit | 25315ebfaefcffd126a266116b37bb8a3d1c4620 (patch) | |
| tree | 7aee5a027d2bdc57f91e20cccf75746ddfc402eb /drivers/gpu/drm/radeon | |
| parent | a3fe0e334f319072746c472185be94a4d5f1a772 (diff) | |
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: 9843ead08f18 ("drm/radeon: add DisplayPort MST support (v2)")
Signed-off-by: Yingjie Wang <wangyingjie55@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_dp_mst.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c index 66a0e736cc4d..59cf1d288465 100644 --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c +++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c @@ -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); } |