---

yaml
---
r: 45399
b: refs/heads/master
c: b6e557f
h: refs/heads/master
i:
  45397: 3861698
  45395: 1a88e30
  45391: 4073421
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f4777569204cb59f2f04fbe9ef4e9a6918209104
+refs/heads/master: b6e557fbf1dbba8cfa667a25503e5dbd0e9330b7

trunk/net/bluetooth/rfcomm/tty.c

@@ -697,9 +697,13 @@ static int rfcomm_tty_write_room(struct tty_struct *tty)
 
 	BT_DBG("tty %p", tty);
 
+	if (!dev || !dev->dlc)
+		return 0;
+
 	room = rfcomm_room(dev->dlc) - atomic_read(&dev->wmem_alloc);
 	if (room < 0)
 		room = 0;
+
 	return room;
 }
 
@@ -915,24 +919,27 @@ static void rfcomm_tty_unthrottle(struct tty_struct *tty)
 static int rfcomm_tty_chars_in_buffer(struct tty_struct *tty)
 {
 	struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
-	struct rfcomm_dlc *dlc = dev->dlc;
 
 	BT_DBG("tty %p dev %p", tty, dev);
 
-	if (!skb_queue_empty(&dlc->tx_queue))
-		return dlc->mtu;
+	if (!dev || !dev->dlc)
+		return 0;
+
+	if (!skb_queue_empty(&dev->dlc->tx_queue))
+		return dev->dlc->mtu;
 
 	return 0;
 }
 
 static void rfcomm_tty_flush_buffer(struct tty_struct *tty)
 {
 	struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
-	if (!dev)
-		return;
 
 	BT_DBG("tty %p dev %p", tty, dev);
 
+	if (!dev || !dev->dlc)
+		return;
+
 	skb_queue_purge(&dev->dlc->tx_queue);
 
 	if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) && tty->ldisc.write_wakeup)
@@ -952,11 +959,12 @@ static void rfcomm_tty_wait_until_sent(struct tty_struct *tty, int timeout)
 static void rfcomm_tty_hangup(struct tty_struct *tty)
 {
 	struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
-	if (!dev)
-		return;
 
 	BT_DBG("tty %p dev %p", tty, dev);
 
+	if (!dev)
+		return;
+
 	rfcomm_tty_flush_buffer(tty);
 
 	if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags))