[PATCH] drm/amd/display: remove no need return value

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Functions (disable_all_writeback_pipes_for_stream &
dc_enable_stereo & dc_post_update_surfaces_to_stream)
always return true, there is no need to keep the return value.
This change is to make the code a bit more readable.

Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c   | 17 +++++------------
 drivers/gpu/drm/amd/display/dc/dc.h        |  2 +-
 drivers/gpu/drm/amd/display/dc/dc_stream.h |  2 +-
 3 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 92eb1ca1634f..8dc598a632b5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -761,7 +761,7 @@ static bool dc_construct(struct dc *dc,
 	return false;
 }
 
-static bool disable_all_writeback_pipes_for_stream(
+static void disable_all_writeback_pipes_for_stream(
 		const struct dc *dc,
 		struct dc_stream_state *stream,
 		struct dc_state *context)
@@ -770,8 +770,6 @@ static bool disable_all_writeback_pipes_for_stream(
 
 	for (i = 0; i < stream->num_wb_info; i++)
 		stream->writeback_info[i].wb_enabled = false;
-
-	return true;
 }
 
 void apply_ctx_interdependent_lock(struct dc *dc, struct dc_state *context, struct dc_stream_state *stream, bool lock)
@@ -1213,13 +1211,12 @@ bool dc_validate_seamless_boot_timing(const struct dc *dc,
 	return true;
 }
 
-bool dc_enable_stereo(
+void dc_enable_stereo(
 	struct dc *dc,
 	struct dc_state *context,
 	struct dc_stream_state *streams[],
 	uint8_t stream_count)
 {
-	bool ret = true;
 	int i, j;
 	struct pipe_ctx *pipe;
 
@@ -1234,8 +1231,6 @@ bool dc_enable_stereo(
 				dc->hwss.setup_stereo(pipe, dc);
 		}
 	}
-
-	return ret;
 }
 
 /*
@@ -1448,18 +1443,18 @@ static bool is_flip_pending_in_pipes(struct dc *dc, struct dc_state *context)
 	return false;
 }
 
-bool dc_post_update_surfaces_to_stream(struct dc *dc)
+void dc_post_update_surfaces_to_stream(struct dc *dc)
 {
 	int i;
 	struct dc_state *context = dc->current_state;
 
 	if ((!dc->optimized_required) || dc->optimize_seamless_boot_streams > 0)
-		return true;
+		return;
 
 	post_surface_trace(dc);
 
 	if (is_flip_pending_in_pipes(dc, context))
-		return true;
+		return;
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++)
 		if (context->res_ctx.pipe_ctx[i].stream == NULL ||
@@ -1472,8 +1467,6 @@ bool dc_post_update_surfaces_to_stream(struct dc *dc)
 
 	dc->optimized_required = false;
 	dc->wm_optimized_required = false;
-
-	return true;
 }
 
 struct dc_state *dc_create_state(struct dc *dc)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index f50ef4255020..f79a3c318757 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -962,7 +962,7 @@ struct dc_flip_addrs {
 	bool triplebuffer_flips;
 };
 
-bool dc_post_update_surfaces_to_stream(
+void dc_post_update_surfaces_to_stream(
 		struct dc *dc);
 
 #include "dc_stream.h"
diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index d9888f316da6..0047ab33f88e 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -391,7 +391,7 @@ enum dc_status dc_validate_stream(struct dc *dc, struct dc_stream_state *stream)
  * Enable stereo when commit_streams is not required,
  * for example, frame alternate.
  */
-bool dc_enable_stereo(
+void dc_enable_stereo(
 	struct dc *dc,
 	struct dc_state *context,
 	struct dc_stream_state *streams[],
-- 
2.28.0

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