diff options
Diffstat (limited to 'drivers/bluetooth/hci_ldisc.c')
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index 9562e72c1ae5..85a30fb9177b 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * * Bluetooth HCI UART driver @@ -5,22 +6,6 @@ * Copyright (C) 2000-2001 Qualcomm Incorporated * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include <linux/module.h> @@ -193,6 +178,7 @@ restart: goto restart; clear_bit(HCI_UART_SENDING, &hu->tx_state); + wake_up_bit(&hu->tx_state, HCI_UART_SENDING); } void hci_uart_init_work(struct work_struct *work) @@ -228,6 +214,13 @@ int hci_uart_init_ready(struct hci_uart *hu) return 0; } +int hci_uart_wait_until_sent(struct hci_uart *hu) +{ + return wait_on_bit_timeout(&hu->tx_state, HCI_UART_SENDING, + TASK_INTERRUPTIBLE, + msecs_to_jiffies(2000)); +} + /* ------- Interface to HCI layer ------ */ /* Reset device */ static int hci_uart_flush(struct hci_dev *hdev) @@ -299,6 +292,19 @@ static int hci_uart_send_frame(struct hci_dev *hdev, 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) +{ + /* serdev nodes check if the needed operations are present */ + if (hu->serdev) + return true; + + if (hu->tty->driver->ops->tiocmget && hu->tty->driver->ops->tiocmset) + return true; + + return false; +} + /* Flow control or un-flow control the device */ void hci_uart_set_flow_control(struct hci_uart *hu, bool enable) { |