Commit b9db4123 authored by Eryk Brol's avatar Eryk Brol Committed by Alex Deucher
Browse files

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: default avatarEryk Brol <eryk.brol@amd.com>
Reviewed-by: default avatarAurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: default avatarAnson Jacob <Anson.Jacob@amd.com>
Tested-by: default avatarDan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7809fc00

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

+4 −0
Original line number Diff line number Diff line
@@ -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);

	}