Bluetooth: add NULL pointer check in HCI
authorJun Nie <njun@marvell.com>
Tue, 7 Dec 2010 06:03:38 +0000 (14:03 +0800)
committerGustavo F. Padovan <padovan@profusion.mobi>
Wed, 8 Dec 2010 15:22:22 +0000 (13:22 -0200)
If we fail to find a hci device pointer in hci_uart, don't try
to deref the NULL one we do have.

Signed-off-by: Jun Nie <njun@marvell.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
drivers/bluetooth/hci_ldisc.c

index 720148294e648473a1a82cc0c68f50ac1fd923c3..3c6cabcb7d84b0428cdeae91b3f9a98f2bc85715 100644 (file)
@@ -311,8 +311,10 @@ static void hci_uart_tty_close(struct tty_struct *tty)
 
                if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) {
                        hu->proto->close(hu);
-                       hci_unregister_dev(hdev);
-                       hci_free_dev(hdev);
+                       if (hdev) {
+                               hci_unregister_dev(hdev);
+                               hci_free_dev(hdev);
+                       }
                }
        }
 }