From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Tue, 29 Nov 2016 13:11:08 -0500
Subject: drm/amd/display: create scratch_val_ctx as temp w/a
Git-commit: 13625c7bf328c9e201363eba3c3e5a15560c4ae9
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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/core/dc.c     |    5 ++++-
 drivers/gpu/drm/amd/display/dc/inc/core_dc.h |    1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -452,6 +452,8 @@ static void destruct(struct core_dc *dc)
 
 	dm_free(dc->temp_flip_context);
 	dc->temp_flip_context = NULL;
+	dm_free(dc->scratch_val_ctx);
+	dc->scratch_val_ctx = NULL;
 
 	destroy_links(dc);
 
@@ -490,6 +492,7 @@ static bool construct(struct core_dc *dc
 
 	dc->current_context = dm_alloc(sizeof(*dc->current_context));
 	dc->temp_flip_context = dm_alloc(sizeof(*dc->temp_flip_context));
+	dc->scratch_val_ctx = dm_alloc(sizeof(*dc->temp_flip_context));
 
 	if (!dc->current_context || !dc->temp_flip_context) {
 		dm_error("%s: failed to create validate ctx\n", __func__);
@@ -1217,7 +1220,7 @@ bool dc_pre_update_surfaces_to_target(
 			goto unexpected_fail;
 		}
 		resource_validate_ctx_destruct(context);
-		dm_free(context);
+		core_dc->scratch_val_ctx = context;
 		context = temp_context;
 	}
 
--- a/drivers/gpu/drm/amd/display/dc/inc/core_dc.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_dc.h
@@ -24,6 +24,7 @@ struct core_dc {
 	/* TODO: determine max number of targets*/
 	struct validate_context *current_context;
 	struct validate_context *temp_flip_context;
+	struct validate_context *scratch_val_ctx;
 	struct resource_pool *res_pool;
 
 	/*Power State*/