diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/bluetooth/hci_ath.c | 3 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 9 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_uart.h | 1 |
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c index 0bc8a6a6a..353ed68db 100644 --- a/drivers/bluetooth/hci_ath.c +++ b/drivers/bluetooth/hci_ath.c @@ -112,6 +112,9 @@ static int ath_open(struct hci_uart *hu) BT_DBG("hu %p", hu); + if (!hci_uart_has_flow_control(hu)) + return -EOPNOTSUPP; + ath = kzalloc(sizeof(*ath), GFP_KERNEL); if (!ath) return -ENOMEM; diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index c4d2f0e48..447e82354 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -269,6 +269,15 @@ static int hci_uart_send_frame(struct sk_buff *skb) return 0; } +/* Check the underlying device or tty has flow control support */ +bool hci_uart_has_flow_control(struct hci_uart *hu) +{ + if (hu->tty->driver->ops->tiocmget && hu->tty->driver->ops->tiocmset) + return true; + + return false; +} + /* ------ LDISC part ------ */ /* hci_uart_tty_open * diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h index 12df101ca..58e0bb8c0 100644 --- a/drivers/bluetooth/hci_uart.h +++ b/drivers/bluetooth/hci_uart.h @@ -90,6 +90,7 @@ int hci_uart_register_proto(struct hci_uart_proto *p); int hci_uart_unregister_proto(struct hci_uart_proto *p); int hci_uart_tx_wakeup(struct hci_uart *hu); int hci_uart_init_ready(struct hci_uart *hu); +bool hci_uart_has_flow_control(struct hci_uart *hu); #ifdef CONFIG_BT_HCIUART_H4 int h4_init(void); |