[PATCH 19/20] drm/amd/display: Only wait for blank completion if OTG active

[Qingqing Zhuo]

From: Aric Cyr <aric.cyr at amd.com>

[why]
If OTG is not active, waiting for blank completion will always fail and
timeout resulting in unnecessary driver delays.

[how]
Check that OTG is enabled before waiting for blank.

Reviewed-by: Alvin Lee <Alvin.Lee2 at amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo at amd.com>
Signed-off-by: Aric Cyr <aric.cyr at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 8d7b2e5516b0..65b3c3052628 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1100,7 +1100,8 @@ static void phantom_pipe_blank(
 			otg_active_height,
 			0);
 
-	hws->funcs.wait_for_blank_complete(opp);
+	if (tg->funcs->is_tg_enabled(tg))
+		hws->funcs.wait_for_blank_complete(opp);
 }
 
 static void disable_dangling_plane(struct dc *dc, struct dc_state *context)
@@ -1163,6 +1164,7 @@ static void disable_dangling_plane(struct dc *dc, struct dc_state *context)
 			if (old_stream->mall_stream_config.type == SUBVP_PHANTOM) {
 				if (tg->funcs->enable_crtc) {
 					int main_pipe_width, main_pipe_height;
+
 					main_pipe_width = old_stream->mall_stream_config.paired_stream->dst.width;
 					main_pipe_height = old_stream->mall_stream_config.paired_stream->dst.height;
 					phantom_pipe_blank(dc, tg, main_pipe_width, main_pipe_height);
-- 
2.34.1