diff options
| author | Yingjie Wang <wangyingjie55@126.com> | 2021-04-07 06:10:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 10:50:26 +0300 |
| commit | c360228ecfb110f78291d94f403f94a276fca42a (patch) | |
| tree | f849d00cc002dc496b7079bd3e5ff8c685c55229 /drivers/gpu/drm/radeon/radeon_dp_mst.c | |
| parent | a6d56760eaba4a1a24d5aaa802bbc4f6aff1edf9 (diff) | |
| download | linux-c360228ecfb110f78291d94f403f94a276fca42a.tar.xz | |
drm/radeon: Fix a missing check bug in radeon_dp_mst_detect()
[ Upstream commit 25315ebfaefcffd126a266116b37bb8a3d1c4620 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_dp_mst.c')
| -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 008308780443..9bd6c0697538 100644 --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c +++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c @@ -242,6 +242,9 @@ 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); } |