From: Josip Pavic <Josip.Pavic@xxxxxxx>
[Why & How]
If dmub command queuing fails due to the inbox being full, flush the
inbox and resubmit the comamnd. This was previously the default behavior
but was lost in a refactor.
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Josip Pavic <Josip.Pavic@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index 954cbfdbc3b6..eef43577508c 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -139,6 +139,15 @@ bool dc_dmub_srv_cmd_run_list(struct dc_dmub_srv *dc_dmub_srv, unsigned int coun
// Queue command
status = dmub_srv_cmd_queue(dmub, &cmd_list[i]);
+ if (status == DMUB_STATUS_QUEUE_FULL) {
+ /* Execute and wait for queue to become empty again. */
+ dmub_srv_cmd_execute(dmub);
+ dmub_srv_wait_for_idle(dmub, 100000);
+
+ /* Requeue the command. */
+ status = dmub_srv_cmd_queue(dmub, &cmd_list[i]);
+ }
+
if (status != DMUB_STATUS_OK) {
DC_ERROR("Error queueing DMUB command: status=%d\n", status);
dc_dmub_srv_log_diagnostic_data(dc_dmub_srv);
--
2.34.1
