[PATCH 05/24] drm/amd/display: Add same check as reset pipes for programing backend regs.

[Harry Wentland]

From: Yongqiang Sun <yongqiang.sun at amd.com>

Change-Id: I195ba4aa84abbc2cfa3c29fe6b6f98bc65ec72e8
Signed-off-by: Yongqiang Sun <yongqiang.sun at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 839c34409c63..7430be502efd 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1689,6 +1689,10 @@ enum dc_status dce110_apply_ctx_to_hw(
 		if (pipe_ctx->stream == pipe_ctx_old->stream)
 			continue;
 
+		if (pipe_ctx->stream && pipe_ctx_old->stream
+				&& !pipe_need_reprogram(pipe_ctx_old, pipe_ctx))
+			continue;
+
 		if (pipe_ctx->top_pipe)
 			continue;
 
-- 
2.11.0