From: Hersen Wu <hersenxs.wu@amd.com>
Date: Tue, 3 Oct 2017 16:47:02 -0400
Subject: drm/amd/display: add dpms state to DC follow up
Git-commit: c196cbe065da1c9b5f7683af9cdd0889760151c1
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-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/dc/core/dc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -332,7 +332,7 @@ static void set_dither_option(struct dc_
 {
 	struct bit_depth_reduction_params params;
 	struct dc_link *link = stream->status.link;
-	struct pipe_ctx *pipes;
+	struct pipe_ctx *pipes = NULL;
 	int i;
 
 	for (i = 0; i < MAX_PIPES; i++) {
@@ -344,7 +344,7 @@ static void set_dither_option(struct dc_
 	}
 
 	memset(&params, 0, sizeof(params));
-	if (!stream)
+	if (!pipes)
 		return;
 	if (option > DITHER_OPTION_MAX)
 		return;