diff options
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index e00f8f5b5c8e..a49ee1b42439 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -477,6 +477,21 @@ static int hci_uart_set_proto(struct hci_uart *hu, int id) return 0; } +static int hci_uart_set_flags(struct hci_uart *hu, unsigned long flags) +{ + unsigned long valid_flags = BIT(HCI_UART_RAW_DEVICE) | + BIT(HCI_UART_RESET_ON_INIT) | + BIT(HCI_UART_CREATE_AMP) | + BIT(HCI_UART_INIT_PENDING); + + if ((flags & ~valid_flags)) + return -EINVAL; + + hu->hdev_flags = flags; + + return 0; +} + /* hci_uart_tty_ioctl() * * Process IOCTL system call for the tty device. @@ -527,7 +542,9 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, case HCIUARTSETFLAGS: if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) return -EBUSY; - hu->hdev_flags = arg; + err = hci_uart_set_flags(hu, arg); + if (err) + return err; break; case HCIUARTGETFLAGS: |