From: Harry Wentland <harry.wentland@amd.com>
Date: Mon, 31 Jul 2017 13:15:04 -0400
Subject: drm/amd/display: Fix plane_atomic_check when no dc_state
Git-commit: 9a3329b172d26806477d07da7142925c8643ec9b
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3160,7 +3160,7 @@ int dm_plane_atomic_check(struct drm_pla
 	struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
 
 	if (!dm_plane_state->dc_state)
-		return true;
+		return 0;
 
 	if (dc_validate_plane(dc, dm_plane_state->dc_state))
 		return 0;