From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Fri, 6 Jan 2017 11:21:47 -0500
Subject: drm/amd/display: Don't fail validation for SIGNAL_TYPE_VIRTUAL
Git-commit: 546b9b619bfe490ed7cf10c39827e4e578ba8135
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Yongqiang Sun <yongqiang.sun@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/dce/dce_link_encoder.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -1053,6 +1053,9 @@ bool dce110_link_encoder_validate_output
 		is_valid = dce110_link_encoder_validate_dp_output(
 			enc110, &stream->public.timing);
 	break;
+	case SIGNAL_TYPE_VIRTUAL:
+		is_valid = true;
+		break;
 	default:
 		is_valid = false;
 	break;