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authorRoman Li <Roman.Li@amd.com>2022-03-18 02:55:05 +0300
committerAlex Deucher <alexander.deucher@amd.com>2022-04-06 18:42:32 +0300
commitf4346fb3edf7720db3f7f5e1cab1f667cd024280 (patch)
tree91cb45b07cdb1bcf03899b1708ef0dd7c6fd05fe /drivers/gpu/drm/amd
parentb2075fce104b88b789c15ef1ed2b91dc94198e26 (diff)
downloadlinux-f4346fb3edf7720db3f7f5e1cab1f667cd024280.tar.xz
drm/amd/display: Fix allocate_mst_payload assert on resume
[Why] On resume we do link detection for all non-MST connectors. MST is handled separately. However the condition for telling if connector is on mst branch is not enough for mst hub case. Link detection for mst branch link leads to mst topology reset. That causes assert in dc_link_allocate_mst_payload() [How] Use link type as indicator for mst link. Reviewed-by: Wayne Lin <Wayne.Lin@amd.com> Acked-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Roman Li <Roman.Li@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r--drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c3
1 files changed, 2 insertions, 1 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 b30656959fd8..5895afefccb7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2714,7 +2714,8 @@ static int dm_resume(void *handle)
* this is the case when traversing through already created
* MST connectors, should be skipped
*/
- if (aconnector->mst_port)
+ if (aconnector->dc_link &&
+ aconnector->dc_link->type == dc_connection_mst_branch)
continue;
mutex_lock(&aconnector->hpd_lock);