diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2020-10-14 13:12:30 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-21 17:33:43 -0400 |
| commit | 5dff80bdce9e385af5716ed083f9e33e814484ab (patch) | |
| tree | 5374b1e0f5dc73c0362e9be05ecb730ca08225d7 | |
| parent | 0d427f6c290c69827b2ca33c5f1386816992e4d8 (diff) | |
drm/amd/display: Avoid MST manager resource leak.
On connector destruction call drm_dp_mst_topology_mgr_destroy
to release resources allocated in drm_dp_mst_topology_mgr_init.
Do it only if MST manager was initilized before otherwsie a crash
is seen on driver unload/device unplug.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 51223450918a..e2b23486ba4c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5063,6 +5063,13 @@ static void amdgpu_dm_connector_destroy(struct drm_connector *connector) struct amdgpu_device *adev = drm_to_adev(connector->dev); struct amdgpu_display_manager *dm = &adev->dm; + /* + * Call only if mst_mgr was iniitalized before since it's not done + * for all connector types. + */ + if (aconnector->mst_mgr.dev) + drm_dp_mst_topology_mgr_destroy(&aconnector->mst_mgr); + #if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) ||\ defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) |