X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fbluetooth%2Fhci_ldisc.c;h=bc68a440d432cd21b2ee10885e7106cfe2852b79;hb=534c97b0950b1967bca1c753aeaed32f5db40264;hp=ed0fade46aed279097f105d3b9c6208eb2b0fe46;hpb=02f3e53a131c8aa3fe3c954058f1add5beeae621;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index ed0fade46aed..bc68a440d432 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -260,12 +260,12 @@ static int hci_uart_send_frame(struct sk_buff *skb)
 
 /* ------ LDISC part ------ */
 /* hci_uart_tty_open
- * 
+ *
  *     Called when line discipline changed to HCI_UART.
  *
  * Arguments:
  *     tty    pointer to tty info structure
- * Return Value:    
+ * Return Value:
  *     0 if success, otherwise error code
  */
 static int hci_uart_tty_open(struct tty_struct *tty)
@@ -365,15 +365,15 @@ static void hci_uart_tty_wakeup(struct tty_struct *tty)
 }
 
 /* hci_uart_tty_receive()
- * 
+ *
  *     Called by tty low level driver when receive data is
  *     available.
- *     
+ *
  * Arguments:  tty          pointer to tty isntance data
  *             data         pointer to received data
  *             flags        pointer to flags for data
  *             count        count of received data in bytes
- *     
+ *
  * Return Value:    None
  */
 static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count)
@@ -388,7 +388,10 @@ static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *f
 
 	spin_lock(&hu->rx_lock);
 	hu->proto->recv(hu, (void *) data, count);
-	hu->hdev->stat.byte_rx += count;
+
+	if (hu->hdev)
+		hu->hdev->stat.byte_rx += count;
+
 	spin_unlock(&hu->rx_lock);
 
 	tty_unthrottle(tty);