From: Yu-ting Shen <yu-ts...@amd.com> [Why] MST monitor sends link loss short pulse continuous but sink is occupy by HDMI input to lead link training fail.
[How] disable link once retraining fail. Acked-by: Aurabindo Pillai <aurabindo.pil...@amd.com> Signed-off-by: Yu-ting Shen <yu-ts...@amd.com> Reviewed-by: Wenjing Liu <wenjing....@amd.com> --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 2796bdd17de1..f14f71dd1aa9 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -4279,6 +4279,8 @@ void core_link_enable_stream( */ if (status != DC_FAIL_DP_LINK_TRAINING || pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { + if (false == stream->link->link_status.link_active) + disable_link(stream->link, pipe_ctx->stream->signal); BREAK_TO_DEBUGGER(); return; } -- 2.30.2