From 24a7470d5d199476c2ecc66499c900cfb08ef70b Mon Sep 17 00:00:00 2001 From: Vitaly Prosyak Date: Thu, 17 Dec 2015 16:25:57 -0500 Subject: [PATCH 0638/1110] drm/amd/dal: Fix NULL pointer derefference on set mode The preferreed mode could be zero Signed-off-by: Jordan Lazare Acked-by: Jordan Lazare --- drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c index 50bd964..bbadc59 100644 --- a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c +++ b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c @@ -893,6 +893,10 @@ static struct dc_target *create_target_for_sink( &aconnector->base.modes, struct drm_display_mode, head); + if (NULL == preferred_mode) { + DRM_ERROR("No preferred mode found\n"); + goto stream_create_fail; + } decide_crtc_timing_for_drm_display_mode( &mode, preferred_mode, -- 2.7.4