Commit 3f8518b6 authored by Vladimir Stempen's avatar Vladimir Stempen Committed by Alex Deucher

drm/amd/display: Release MST resources on switch from MST to SST

[why]
When OS overrides training link training parameters
for MST device to SST mode, MST resources are not
released and leak of the resource may result crash and
incorrect MST discovery during following hot plugs.

[how]
Retaining sink object to be reused by SST link and
releasing MST  resources.
Signed-off-by: default avatarVladimir Stempen <vladimir.stempen@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarStylon Wang <stylon.wang@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 74b4afad
......@@ -1917,6 +1917,8 @@ static void set_dp_mst_mode(struct dc_link *link, bool mst_enable)
link->type = dc_connection_single;
link->local_sink = link->remote_sinks[0];
link->local_sink->sink_signal = SIGNAL_TYPE_DISPLAY_PORT;
dc_sink_retain(link->local_sink);
dm_helpers_dp_mst_stop_top_mgr(link->ctx, link);
} else if (mst_enable == true &&
link->type == dc_connection_single &&
link->remote_sinks[0] != NULL) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment