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From 9ed8cbfc739799bb15d03684e8db866f5b0846d8 Mon Sep 17 00:00:00 2001
From: Vitaly Prosyak <vitaly.prosyak@amd.com>
Date: Thu, 17 Dec 2015 16:25:57 -0500
Subject: [PATCH 0987/1050] drm/amd/dal: Fix NULL pointer derefference on set
mode
The preferreed mode could be zero
Change-Id: I88c6b29b1a9c5c70c8f86705723bab1326ea9fbd
Signed-off-by: Jordan Lazare <Jordan.Lazare@amd.com>
Acked-by: Jordan Lazare <Jordan.Lazare@amd.com>
---
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 37c6a2a..6fd400d 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,
--
1.9.1
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