[PATCH 2/4] drm/msm/dp: clear force_link_train flag when link training succeeds

[Saurabh Anand]

msm_dp_display_prepare_link() sets force_link_train = true before calling
msm_dp_ctrl_on_link(). On success the flag was never cleared, so
msm_dp_ctrl_prepare_stream_on() would unconditionally trigger a second
link retrain even though the link was already trained.

Clear force_link_train on the success path so that
msm_dp_ctrl_prepare_stream_on() only retrains when the channel EQ check
fails, as intended.

Signed-off-by: Saurabh Anand <saurabh.anand at oss.qualcomm.com>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index bc646d172abe..40e19d506a45 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -649,6 +649,8 @@ static int msm_dp_display_prepare_link(struct msm_dp_display_private *dp)
 		return rc;
 	}
 
+	force_link_train = false;
+
 	return msm_dp_ctrl_prepare_stream_on(dp->ctrl, dp->panel, force_link_train);
 }
 

-- 
2.34.1