diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index bbb0e214e51d..d6d8ec8eb8cf 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -497,6 +497,7 @@ struct l2cap_chan {
 
 	void		*data;
 	struct l2cap_ops *ops;
+	struct mutex		lock;
 };
 
 struct l2cap_ops {
@@ -609,6 +610,16 @@ static inline void l2cap_chan_put(struct l2cap_chan *c)
 		kfree(c);
 }
 
+static inline void l2cap_chan_lock(struct l2cap_chan *chan)
+{
+	mutex_lock(&chan->lock);
+}
+
+static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
+{
+	mutex_unlock(&chan->lock);
+}
+
 static inline void l2cap_set_timer(struct l2cap_chan *chan,
 					struct delayed_work *work, long timeout)
 {
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 8e8e9e93fb34..e39eba1ac4da 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -247,6 +247,8 @@ struct l2cap_chan *l2cap_chan_create(struct sock *sk)
 	if (!chan)
 		return NULL;
 
+	mutex_init(&chan->lock);
+
 	chan->sk = sk;
 
 	write_lock(&chan_list_lock);