Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 957bd54f authored by Xiaowen Wu's avatar Xiaowen Wu Committed by Gerrit - the friendly Code Review server
Browse files

drm/msm/dp: protect mst add_connector process with mode_lock 



Add mode_lock to avoid connector access from commit context
during MST add_connector process.

CRs-Fixed: 2262770
Change-Id: I34bf154653d0607d76aae6ae0d58c61372a9a737
Signed-off-by: default avatarXiaowen Wu <wxiaowen@codeaurora.org>
parent b5ac4d66

drivers/gpu/drm/msm/dp/dp_mst_drm.c

+6 −0
Original line number Diff line number Diff line
@@ -1005,6 +1005,9 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr, 
	dp_display = dp_mst->dp_display;

	dev = dp_display->drm_dev;



	/* make sure connector is not accessed before reset */

	drm_modeset_lock_all(dev);



	connector = sde_connector_init(dev,

				dp_mst->mst_bridge[0].encoder,

				NULL,
@@ -1041,6 +1044,9 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr, 
	drm_object_attach_property(&connector->base,

			dev->mode_config.tile_property, 0);



	/* unlock connector and make it accessible */

	drm_modeset_unlock_all(dev);



	DP_MST_DEBUG("add mst connector:%d\n", connector->base.id);



	return connector;