From: Roman Li <Roman.Li@amd.com>
Date: Wed, 17 May 2017 12:07:30 -0400
Subject: drm/amd/display: Fix 5th display lightup on Vega10
Git-commit: ccaf31ec714b596d1edb92b1ed4ccc4abf1f645c
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

- fixing bug in calculation of reg offset for D5VGA_CONTROL

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@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/dc/dce120/dce120_timing_generator.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
@@ -410,7 +410,7 @@ void dce120_timing_generator_disable_vga
 		break;
 	case CONTROLLER_ID_D4:
 		addr = mmD1VGA_CONTROL;
-		offset = mmD1VGA_CONTROL - mmD1VGA_CONTROL;
+		offset = mmD5VGA_CONTROL - mmD1VGA_CONTROL;
 		break;
 	case CONTROLLER_ID_D5:
 		addr = mmD6VGA_CONTROL;