Commit 322e50ae authored Jul 09, 2020 by Rajkumar Subbiah

disp: msm: dp: check branch device when adding mst sim port



When adding a new MST sim port check if the branch device was
destroyed already to avoid dereferencing a null pointer.

Change-Id: I8e6f82c5a6772a9b85d24feca52368da2027e96d
Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>

parent f04e775e

msm/dp/dp_mst_drm.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -267,6 +267,10 @@ static void dp_mst_sim_add_port(struct dp_mst_private *mst,
		struct drm_dp_mst_port *port;

		mstb = mst->mst_mgr.mst_primary;
		if (!mstb) {
		DP_ERR("Unable to add port. mst branch device was destroyed\n");
		return;
		}

		port = kzalloc(sizeof(*port), GFP_KERNEL);
		if (!port)