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authorMarcel Holtmann <marcel@holtmann.org>2007-05-09 09:15:40 +0200
committerDavid S. Miller <davem@sunset.davemloft.net>2007-05-10 23:45:05 -0700
commit22ad42033b7d2b3d7928fba9f89d1c7f8a3c9581 (patch)
treee07c8da23cb753237effd987f9d31643ec50c65e /drivers/bluetooth/hci_ldisc.c
parentd215874460e7657b8e104de024140e0932690450 (diff)
[Bluetooth] Fix NULL pointer dereference in HCI line discipline
Normally a serial Bluetooth device is opened, TIOSETD'ed to N_HCI line discipline, HCIUARTSETPROTO'ed and finally closed. In case the device fails to HCIUARTSETPROTO, closing it produces a NULL pointer dereference. Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/hci_ldisc.c')
-rw-r--r--drivers/bluetooth/hci_ldisc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 75c15085f81..e8ae0d7e771 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -307,7 +307,9 @@ static void hci_uart_tty_close(struct tty_struct *tty)
if (hu) {
struct hci_dev *hdev = hu->hdev;
- hci_uart_close(hdev);
+
+ if (hdev)
+ hci_uart_close(hdev);
if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) {
hu->proto->close(hu);