From: Eryk Brol <eryk.b...@amd.com>
[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.b...@amd.com>
Reviewed-by: Aurabindo Jayamohanan Pillai <aurabindo.pil...@amd.com>
Acked-by: Anson Jacob <anson.ja...@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 4 ++++
1 file changed, 4 insertions(+)
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);
}
--
2.25.1
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