This is a note to let you know that I've just added the patch titled
drm/msm/dp: dont call dp_catalog_ctrl_mainlink_ctrl in dp_ctrl_configure_source_params()
to the 6.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-msm-dp-dont-call-dp_catalog_ctrl_mainlink_ctrl-i.patch
and it can be found in the queue-6.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 86fe0752a2bc946a22c1651497cc19ee86c30cf6
Author: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Date: Thu Dec 5 20:31:32 2024 -0800
drm/msm/dp: dont call dp_catalog_ctrl_mainlink_ctrl in dp_ctrl_configure_source_params()
[ Upstream commit 50e608d166ba68faacf81a5ce17c09b0c697eefd ]
Once the link has already been setup there is no need to call
dp_catalog_ctrl_mainlink_ctrl() as this does a reset on the mainlink
thereby tearing down the link briefly.
Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/627479/
Link: https://lore.kernel.org/r/20241205-dp_mst-v1-1-f8618d42a99a@xxxxxxxxxxx
Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index bc2ca8133b790..a8069f7c4773f 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -178,7 +178,6 @@ static void msm_dp_ctrl_configure_source_params(struct msm_dp_ctrl_private *ctrl
u32 cc, tb;
msm_dp_catalog_ctrl_lane_mapping(ctrl->catalog);
- msm_dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, true);
msm_dp_catalog_setup_peripheral_flush(ctrl->catalog);
msm_dp_ctrl_config_ctrl(ctrl);
