[PATCH] drm/amd/display: [FIX] update clock under two conditions

[Qingqing Zhuo]

[Why]
Update clock only when non-seamless boot stream exists
creates regression on multiple scenerios.

[How]
Update clock in two conditions
1. Non-seamless boot stream exist.
2. Stream_count = 0

Fixes:06f9b1475d98("drm/amd/display: update clock
when non-seamless boot stream exist")

Signed-off-by: Lewis Huang <Lewis.Huang at amd.com>
Acked-by: Qingqing Zhuo <Qingqing.zhuo at amd.com>
Cc: <stable at vger.kernel.org>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 1efc823c2a14..7e74ddc1c708 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1286,7 +1286,8 @@ static enum dc_status dc_commit_state_no_check(struct dc *dc, struct dc_state *c
 			dc->optimize_seamless_boot_streams++;
 	}
 
-	if (context->stream_count > dc->optimize_seamless_boot_streams)
+	if (context->stream_count > dc->optimize_seamless_boot_streams ||
+		context->stream_count == 0)
 		dc->hwss.prepare_bandwidth(dc, context);
 
 	disable_dangling_plane(dc, context);
@@ -1368,7 +1369,8 @@ static enum dc_status dc_commit_state_no_check(struct dc *dc, struct dc_state *c
 
 	dc_enable_stereo(dc, context, dc_streams, context->stream_count);
 
-	if (context->stream_count > dc->optimize_seamless_boot_streams) {
+	if (context->stream_count > dc->optimize_seamless_boot_streams ||
+		context->stream_count == 0) {
 		/* Must wait for no flips to be pending before doing optimize bw */
 		wait_for_no_pipes_pending(dc, context);
 		/* pplib is notified if disp_num changed */
-- 
2.17.1