From 3b070c60ea511a0d103b39de3122d3bad0de45ab Mon Sep 17 00:00:00 2001 From: Mikita Lipski Date: Tue, 22 May 2018 15:55:43 -0400 Subject: [PATCH] drm/amd/display: Drop to fail-safe mode if edid is bad Provide the connector with a single fail-safe mode of 640x480 for CTS tests instead of providing a list of possible base modes. Signed-off-by: Mikita Lipski Reviewed-by: Tony Cheng Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index adeb795d80f6..b1b8d1914b31 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3424,6 +3424,10 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector) struct edid *edid = amdgpu_dm_connector->edid; encoder = helper->best_encoder(connector); + + if (!edid || !drm_edid_is_valid(edid)) + return drm_add_modes_noedid(connector, 640, 480); + amdgpu_dm_connector_ddc_get_modes(connector, edid); amdgpu_dm_connector_add_common_modes(encoder, connector); -- 2.30.2