diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2006-07-06 15:53:31 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-07-12 15:34:30 -0700 |
| commit | 420cc3505f91246699bcfb88d30c4466adc0b87b (patch) | |
| tree | e4732e344576a094766df06640d9ec3aa80a98ab /drivers/bluetooth/hci_ldisc.c | |
| parent | 25ea6db04a96d7871e7ece27d566f3228d59d932 (diff) | |
| download | lwn-420cc3505f91246699bcfb88d30c4466adc0b87b.tar.gz lwn-420cc3505f91246699bcfb88d30c4466adc0b87b.zip | |
[Bluetooth] Avoid NULL pointer dereference with tty->driver
This patch checks for tty->driver before trying to call flush_buffer().
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/hci_ldisc.c')
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index 1994270c16e1..93ba25b7ea32 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -191,7 +191,7 @@ static int hci_uart_flush(struct hci_dev *hdev) /* Flush any pending characters in the driver and discipline. */ tty_ldisc_flush(tty); - if (tty->driver->flush_buffer) + if (tty->driver && tty->driver->flush_buffer) tty->driver->flush_buffer(tty); if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) @@ -290,7 +290,7 @@ static int hci_uart_tty_open(struct tty_struct *tty) if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty); - if (tty->driver->flush_buffer) + if (tty->driver && tty->driver->flush_buffer) tty->driver->flush_buffer(tty); return 0; |