From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Wed, 20 Sep 2017 17:06:18 -0400
Subject: drm/amd/display: Fixed validation return wrong result.
Git-commit: e750d56d2c62875c81f52344afab44220300388d
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>
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/amdgpu_dm/amdgpu_dm.c |    2 +-
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c |    2 +-
 drivers/gpu/drm/amd/display/dc/dc.h               |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4748,7 +4748,7 @@ static int amdgpu_dm_atomic_check(struct
 		if (ret)
 			goto fail;
 
-		if (!dc_validate_global_state(dc, dm_state->context)) {
+		if (dc_validate_global_state(dc, dm_state->context) != DC_OK) {
 			ret = -EINVAL;
 			goto fail;
 		}
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1716,7 +1716,7 @@ void dc_resource_state_construct(
 	dst_ctx->dis_clk = dc->res_pool->display_clock;
 }
 
-bool dc_validate_global_state(
+enum dc_status dc_validate_global_state(
 		struct dc *dc,
 		struct dc_state *new_ctx)
 {
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -654,7 +654,7 @@ bool dc_validate_stream(struct dc *dc, s
 
 bool dc_validate_plane(struct dc *dc, const struct dc_plane_state *plane_state);
 
-bool dc_validate_global_state(
+enum dc_status dc_validate_global_state(
 		struct dc *dc,
 		struct dc_state *new_ctx);