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From 97b414e2cacefa8c86ed4620c85ba04668985a78 Mon Sep 17 00:00:00 2001
From: Corbin McElhanney <corbin.mcelhanney@amd.com>
Date: Tue, 23 May 2017 15:26:57 -0400
Subject: [PATCH 0471/4131] drm/amd/display: Allow update stream without
surface
Passing NULL as surfaceUpdates to dc_update_surfaces_and_stream now
updates just the stream. Code that is dependent on srf_updates was moved
below the NULL check.
Signed-off-by: Corbin McElhanney <corbin.mcelhanney@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>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 58 +++++++++++++++++---------------
1 file changed, 31 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index f534997..c33e31c 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1223,33 +1223,7 @@ void dc_update_surfaces_and_stream(struct dc *dc,
if (!stream_status)
return; /* Cannot commit surface to stream that is not committed */
- update_type = dc_check_update_surfaces_for_stream(
- dc, srf_updates, surface_count, stream_update, stream_status);
-
- if (update_type >= update_surface_trace_level)
- update_surface_trace(dc, srf_updates, surface_count);
-
- if (update_type >= UPDATE_TYPE_FULL) {
- const struct dc_surface *new_surfaces[MAX_SURFACES] = { 0 };
-
- for (i = 0; i < surface_count; i++)
- new_surfaces[i] = srf_updates[i].surface;
-
- /* initialize scratch memory for building context */
- context = dm_alloc(sizeof(*context));
- dc_resource_validate_ctx_copy_construct(
- core_dc->current_context, context);
-
- /* add surface to context */
- if (!resource_attach_surfaces_to_context(
- new_surfaces, surface_count, dc_stream,
- context, core_dc->res_pool)) {
- BREAK_TO_DEBUGGER();
- goto fail;
- }
- } else {
- context = core_dc->current_context;
- }
+ context = core_dc->current_context;
/* update current stream with the new updates */
if (stream_update) {
@@ -1277,6 +1251,36 @@ void dc_update_surfaces_and_stream(struct dc *dc,
}
}
+ /* only proceed if we need to make a surface update */
+ if (!srf_updates)
+ return;
+
+ update_type = dc_check_update_surfaces_for_stream(
+ dc, srf_updates, surface_count, stream_update, stream_status);
+
+ if (update_type >= update_surface_trace_level)
+ update_surface_trace(dc, srf_updates, surface_count);
+
+ if (update_type >= UPDATE_TYPE_FULL) {
+ const struct dc_surface *new_surfaces[MAX_SURFACES] = { 0 };
+
+ for (i = 0; i < surface_count; i++)
+ new_surfaces[i] = srf_updates[i].surface;
+
+ /* initialize scratch memory for building context */
+ context = dm_alloc(sizeof(*context));
+ dc_resource_validate_ctx_copy_construct(
+ core_dc->current_context, context);
+
+ /* add surface to context */
+ if (!resource_attach_surfaces_to_context(
+ new_surfaces, surface_count, dc_stream,
+ context, core_dc->res_pool)) {
+ BREAK_TO_DEBUGGER();
+ goto fail;
+ }
+ }
+
/* save update parameters into surface */
for (i = 0; i < surface_count; i++) {
struct core_surface *surface =
--
2.7.4
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