From e13c2ea2f522fecb7b2de4342e4fa10d6e15c26d Mon Sep 17 00:00:00 2001 From: Jaehyun Chung Date: Thu, 22 Jul 2021 14:15:11 -0400 Subject: [PATCH] drm/amd/display: Add check for validating unsupported ODM plus MPO case [Why] We do not currently support ODM plus MPO on only one side of the screen. This unsupported case causes validation calculations to divide by zero due to invalid viewport values. [How] Add stopgap for the validation of ODM plus MPO on one side of screen case. Reviewed-by: Dmytro Laktyushkin Acked-by: Aurabindo Pillai Signed-off-by: Jaehyun Chung Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 7f12ca9..a60396d 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1051,6 +1051,11 @@ bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx) /* depends on scaling ratios and recout, does not calculate offset yet */ calculate_viewport_size(pipe_ctx); + /* Stopgap for validation of ODM + MPO on one side of screen case */ + if (pipe_ctx->plane_res.scl_data.viewport.height < 1 || + pipe_ctx->plane_res.scl_data.viewport.width < 1) + return false; + /* * LB calculations depend on vp size, h/v_active and scaling ratios * Setting line buffer pixel depth to 24bpp yields banding -- 2.7.4