1 files changed, 21 insertions, 8 deletions

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index f141fbecfa40..9572cbd12a7a 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -595,32 +595,45 @@ enum {
 	FLAG_EFS_ENABLE,
 };
 
+static inline void l2cap_chan_hold(struct l2cap_chan *c)
+{
+	atomic_inc(&c->refcnt);
+}
+
+static inline void l2cap_chan_put(struct l2cap_chan *c)
+{
+	if (atomic_dec_and_test(&c->refcnt))
+		kfree(c);
+}
+
 static inline void l2cap_set_timer(struct l2cap_chan *chan,
 					struct delayed_work *work, long timeout)
 {
 	BT_DBG("chan %p state %d timeout %ld", chan, chan->state, timeout);
 
-	cancel_delayed_work_sync(work);
-
+	if (!__cancel_delayed_work(work))
+		l2cap_chan_hold(chan);
 	schedule_delayed_work(work, timeout);
 }
 
-static inline void l2cap_clear_timer(struct delayed_work *work)
+static inline void l2cap_clear_timer(struct l2cap_chan *chan,
+					struct delayed_work *work)
 {
-	cancel_delayed_work_sync(work);
+	if (__cancel_delayed_work(work))
+		l2cap_chan_put(chan);
 }
 
 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
-#define __clear_chan_timer(c) l2cap_clear_timer(&c->chan_timer)
+#define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
 #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
 		L2CAP_DEFAULT_RETRANS_TO);
-#define __clear_retrans_timer(c) l2cap_clear_timer(&c->retrans_timer)
+#define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
 #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
 		L2CAP_DEFAULT_MONITOR_TO);
-#define __clear_monitor_timer(c) l2cap_clear_timer(&c->monitor_timer)
+#define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
 		L2CAP_DEFAULT_ACK_TO);
-#define __clear_ack_timer(c) l2cap_clear_timer(&c->ack_timer)
+#define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
 
 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
 {