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Commit 00f713c6 authored by Eric Yang's avatar Eric Yang Committed by Alex Deucher
Browse files

drm/amd/display: fix MST link training fail division by 0 



When link training fail in MST case, we will divide by 0
when calculating avg_time_slots_per_mtp, so we cannot
proceed.

Signed-off-by: default avatarEric Yang <Eric.Yang2@amd.com>
Reviewed-by: default avatarHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 82e97810

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+4 −2
Original line number Diff line number Diff line
@@ -2318,9 +2318,11 @@ void core_link_enable_stream( 


			/* Abort stream enable *unless* the failure was due to

			 * DP link training - some DP monitors will recover and

			 * show the stream anyway.

			 * show the stream anyway. But MST displays can't proceed

			 * without link training.

			 */

			if (status != DC_FAIL_DP_LINK_TRAINING) {

			if (status != DC_FAIL_DP_LINK_TRAINING ||

					pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {

				BREAK_TO_DEBUGGER();

				return;

			}