diff options
| author | Eryk Brol <eryk.brol@amd.com> | 2021-03-18 14:44:17 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:48:35 -0400 |
| commit | b9db41235a2a3de7e65891e30a9868fe50a2d7e1 (patch) | |
| tree | f7ad1fb05712276a0f68000139d47bad457c72dd /drivers/gpu | |
| parent | 7809fc00e20e6efb51891b95dccd327316beefdf (diff) | |
| download | linux-b9db41235a2a3de7e65891e30a9868fe50a2d7e1.tar.bz2 | |
drm/amd/display: Fix MST topology debugfs
[why]
The drm dump_topology function was previously called on all
DP connectors. This resulted in empty topology dumps for those
connectors which weren't root MST nodes.
[how]
Make sure we only dump topology from the root MST node.
Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index f6f10a8c3e43..5a9809e33af8 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -2901,6 +2901,10 @@ static int mst_topo_show(struct seq_file *m, void *unused) aconnector = to_amdgpu_dm_connector(connector); + /* Ensure we're only dumping the topology of a root mst node */ + if (!aconnector->mst_mgr.mst_state) + continue; + seq_printf(m, "\nMST topology for connector %d\n", aconnector->connector_id); drm_dp_mst_dump_topology(m, &aconnector->mst_mgr); } |