From: Ohad Ben-Cohen <[email protected]>
Normally a serial BT 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.
This patch fixes this scenario.
Signed-off-by: Ohad Ben-Cohen <[email protected]>
---
drivers/bluetooth/hci_ldisc.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 75c1508..4a59a33 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -307,7 +307,8 @@ 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);
--
1.5.0.6