diff options
| author | Lyude Paul <lyude@redhat.com> | 2019-01-10 19:53:34 -0500 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2019-01-10 20:12:24 -0500 |
| commit | d25689760b747287c6ca03cfe0729da63e0717f4 (patch) | |
| tree | 0e6841dc5910da14811c9414f67300281761c95f /drivers/gpu/drm/amd/display/amdgpu_dm | |
| parent | 79a47cd36c8ddbf4435cd658d00c61cc2d9741cd (diff) | |
drm/amdgpu/display: Keep malloc ref to MST port
Just like i915 and nouveau, it's a good idea for us to hold a malloc
reference to the port here so that we never pass a freed pointer to any
of the DP MST helper functions.
Also, we stop unsetting aconnector->port in
dm_dp_destroy_mst_connector(). There's literally no point to that
assignment that I can see anyway.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@redhat.com>
Cc: Jerry Zuo <Jerry.Zuo@amd.com>
Cc: Juston Li <juston.li@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190111005343.17443-12-lyude@redhat.com
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 9fdeca096407..24665795b1ad 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -191,6 +191,7 @@ dm_dp_mst_connector_destroy(struct drm_connector *connector) drm_encoder_cleanup(&amdgpu_encoder->base); kfree(amdgpu_encoder); drm_connector_cleanup(connector); + drm_dp_mst_put_port_malloc(amdgpu_dm_connector->port); kfree(amdgpu_dm_connector); } @@ -364,7 +365,9 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, amdgpu_dm_connector_funcs_reset(connector); DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n", - aconnector, connector->base.id, aconnector->mst_port); + aconnector, connector->base.id, aconnector->mst_port); + + drm_dp_mst_get_port_malloc(port); DRM_DEBUG_KMS(":%d\n", connector->base.id); @@ -380,12 +383,12 @@ static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n", - aconnector, connector->base.id, aconnector->mst_port); + aconnector, connector->base.id, aconnector->mst_port); - aconnector->port = NULL; if (aconnector->dc_sink) { amdgpu_dm_update_freesync_caps(connector, NULL); - dc_link_remove_remote_sink(aconnector->dc_link, aconnector->dc_sink); + dc_link_remove_remote_sink(aconnector->dc_link, + aconnector->dc_sink); dc_sink_release(aconnector->dc_sink); aconnector->dc_sink = NULL; } |