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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:
Johan Hovold 2013-01-14 16:52:58 +01:00 committed by Greg Kroah-Hartman
parent 263e1f9fbb
commit f40d781554
1 changed files with 9 additions and 48 deletions
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57
drivers/usb/serial/io_ti.c
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@ -521,47 +521,6 @@ exit_is_tx_active:
return bytes_left;
}
static void chase_port(struct edgeport_port *port, unsigned long timeout)
{
struct tty_struct *tty = tty_port_tty_get(&port->port->port);
struct usb_serial *serial = port->port->serial;
wait_queue_t wait;
unsigned long flags;
if (!timeout)
timeout = (HZ * EDGE_CLOSING_WAIT)/100;
/* wait for data to drain from the buffer */
spin_lock_irqsave(&port->ep_lock, flags);
init_waitqueue_entry(&wait, current);
add_wait_queue(&tty->write_wait, &wait);
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (kfifo_len(&port->write_fifo) == 0
|| timeout == 0 || signal_pending(current)
|| serial->disconnected)
/* disconnect */
break;
spin_unlock_irqrestore(&port->ep_lock, flags);
timeout = schedule_timeout(timeout);
spin_lock_irqsave(&port->ep_lock, flags);
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&tty->write_wait, &wait);
spin_unlock_irqrestore(&port->ep_lock, flags);
tty_kref_put(tty);
/* wait for data to drain from the device */
timeout += jiffies;
while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
&& !serial->disconnected) {
/* not disconnected */
if (!tx_active(port))
break;
msleep(10);
}
}
static int choose_config(struct usb_device *dev)
{
/*
@ -1955,8 +1914,6 @@ static void edge_close(struct usb_serial_port *port)
* this flag and dump add read data */
edge_port->close_pending = 1;
chase_port(edge_port, (HZ * closing_wait) / 100);
usb_kill_urb(port->read_urb);
usb_kill_urb(port->write_urb);
edge_port->ep_write_urb_in_use = 0;
@ -2092,8 +2049,6 @@ static int edge_chars_in_buffer(struct tty_struct *tty)
if (edge_port == NULL)
return 0;
if (edge_port->close_pending == 1)
return 0;
spin_lock_irqsave(&edge_port->ep_lock, flags);
chars = kfifo_len(&edge_port->write_fifo);
@ -2442,10 +2397,15 @@ static int get_serial_info(struct edgeport_port *edge_port,
struct serial_struct __user *retinfo)
{
struct serial_struct tmp;
unsigned cwait;
if (!retinfo)
return -EFAULT;
cwait = edge_port->port->port.closing_wait;
if (cwait != ASYNC_CLOSING_WAIT_NONE)
cwait = jiffies_to_msecs(closing_wait) / 10;
memset(&tmp, 0, sizeof(tmp));
tmp.type = PORT_16550A;
@ -2456,7 +2416,7 @@ static int get_serial_info(struct edgeport_port *edge_port,
tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
tmp.baud_base = 9600;
tmp.close_delay = 5*HZ;
tmp.closing_wait = closing_wait;
tmp.closing_wait = cwait;
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
return -EFAULT;
@ -2511,8 +2471,7 @@ static void edge_break(struct tty_struct *tty, int break_state)
int status;
int bv = 0; /* Off */
/* chase the port close */
chase_port(edge_port, 0);
tty_wait_until_sent(tty, 0);
if (break_state == -1)
bv = 1; /* On */
@ -2585,6 +2544,8 @@ static int edge_port_probe(struct usb_serial_port *port)
return ret;
}
port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
return 0;
}