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USB: io_ti: kill custom closing_wait implementation
Kill custom closing_wait implementation and let the tty layer handle it instead. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
263e1f9fbb
commit
f40d781554
1 changed files with 9 additions and 48 deletions
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@ -521,47 +521,6 @@ static int tx_active(struct edgeport_port *port)
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return bytes_left;
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}
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static void chase_port(struct edgeport_port *port, unsigned long timeout)
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{
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struct tty_struct *tty = tty_port_tty_get(&port->port->port);
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struct usb_serial *serial = port->port->serial;
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wait_queue_t wait;
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unsigned long flags;
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if (!timeout)
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timeout = (HZ * EDGE_CLOSING_WAIT)/100;
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/* wait for data to drain from the buffer */
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spin_lock_irqsave(&port->ep_lock, flags);
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init_waitqueue_entry(&wait, current);
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add_wait_queue(&tty->write_wait, &wait);
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for (;;) {
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set_current_state(TASK_INTERRUPTIBLE);
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if (kfifo_len(&port->write_fifo) == 0
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|| timeout == 0 || signal_pending(current)
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|| serial->disconnected)
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/* disconnect */
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break;
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spin_unlock_irqrestore(&port->ep_lock, flags);
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timeout = schedule_timeout(timeout);
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spin_lock_irqsave(&port->ep_lock, flags);
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}
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set_current_state(TASK_RUNNING);
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remove_wait_queue(&tty->write_wait, &wait);
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spin_unlock_irqrestore(&port->ep_lock, flags);
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tty_kref_put(tty);
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/* wait for data to drain from the device */
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timeout += jiffies;
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while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
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&& !serial->disconnected) {
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/* not disconnected */
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if (!tx_active(port))
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break;
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msleep(10);
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}
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}
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static int choose_config(struct usb_device *dev)
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{
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/*
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@ -1955,8 +1914,6 @@ static void edge_close(struct usb_serial_port *port)
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* this flag and dump add read data */
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edge_port->close_pending = 1;
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chase_port(edge_port, (HZ * closing_wait) / 100);
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usb_kill_urb(port->read_urb);
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usb_kill_urb(port->write_urb);
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edge_port->ep_write_urb_in_use = 0;
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@ -2092,8 +2049,6 @@ static int edge_chars_in_buffer(struct tty_struct *tty)
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if (edge_port == NULL)
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return 0;
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if (edge_port->close_pending == 1)
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return 0;
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spin_lock_irqsave(&edge_port->ep_lock, flags);
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chars = kfifo_len(&edge_port->write_fifo);
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@ -2442,10 +2397,15 @@ static int get_serial_info(struct edgeport_port *edge_port,
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struct serial_struct __user *retinfo)
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{
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struct serial_struct tmp;
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unsigned cwait;
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if (!retinfo)
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return -EFAULT;
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cwait = edge_port->port->port.closing_wait;
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if (cwait != ASYNC_CLOSING_WAIT_NONE)
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cwait = jiffies_to_msecs(closing_wait) / 10;
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memset(&tmp, 0, sizeof(tmp));
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tmp.type = PORT_16550A;
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@ -2456,7 +2416,7 @@ static int get_serial_info(struct edgeport_port *edge_port,
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tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
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tmp.baud_base = 9600;
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tmp.close_delay = 5*HZ;
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tmp.closing_wait = closing_wait;
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tmp.closing_wait = cwait;
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if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
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return -EFAULT;
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@ -2511,8 +2471,7 @@ static void edge_break(struct tty_struct *tty, int break_state)
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int status;
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int bv = 0; /* Off */
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/* chase the port close */
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chase_port(edge_port, 0);
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tty_wait_until_sent(tty, 0);
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if (break_state == -1)
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bv = 1; /* On */
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@ -2585,6 +2544,8 @@ static int edge_port_probe(struct usb_serial_port *port)
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return ret;
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}
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port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
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return 0;
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}
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