From: Corbin McElhanney Date: Thu, 1 Jun 2017 15:40:04 -0400 Subject: drm/amd/display: Don't update surface if dimensions are 0 Git-commit: e7b1322e15ea66c135ff98c1eb15fc542ef79c89 Patch-mainline: v4.15-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 Signed-off-by: Corbin McElhanney Reviewed-by: Tony Cheng Acked-by: Harry Wentland Signed-off-by: Alex Deucher Acked-by: Petr Tesarik --- drivers/gpu/drm/amd/display/dc/core/dc.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1250,8 +1250,15 @@ void dc_update_surfaces_and_stream(struc } } - /* only proceed if we need to make a surface update */ - if (!srf_updates) + /* do not perform surface update if surface has invalid dimensions + * (all zero) and no scaling_info is provided + */ + if (surface_count > 0 && + srf_updates->surface->src_rect.width == 0 && + srf_updates->surface->src_rect.height == 0 && + srf_updates->surface->dst_rect.width == 0 && + srf_updates->surface->dst_rect.height == 0 && + !srf_updates->scaling_info) return; update_type = dc_check_update_surfaces_for_stream(