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TTY: ircomm, use tty_port_close_start helper 

Again, the code is identical, so leverage the helper code.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-06-04 13:35:25 +02:00 committed by Greg Kroah-Hartman
parent a1e844036a
commit c0e7865003
1 changed files with 1 additions and 47 deletions
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48
net/irda/ircomm/ircomm_tty.c
View File

@ -509,64 +509,18 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp)
{
struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
struct tty_port *port = &self->port;
unsigned long flags;
IRDA_DEBUG(0, "%s()\n", __func__ );
IRDA_ASSERT(self != NULL, return;);
IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
spin_lock_irqsave(&port->lock, flags);
if (tty_hung_up_p(filp)) {
spin_unlock_irqrestore(&port->lock, flags);
IRDA_DEBUG(0, "%s(), returning 1\n", __func__ );
if (tty_port_close_start(port, tty, filp) == 0)
return;
}
if ((tty->count == 1) && (port->count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. state->count should always
* be one in these conditions. If it's greater than
* one, we've got real problems, since it means the
* serial port won't be shutdown.
*/
IRDA_DEBUG(0, "%s(), bad serial port count; "
"tty->count is 1, state->count is %d\n", __func__ ,
port->count);
port->count = 1;
}
if (--port->count < 0) {
IRDA_ERROR("%s(), bad serial port count for ttys%d: %d\n",
__func__, self->line, port->count);
port->count = 0;
}
if (port->count) {
spin_unlock_irqrestore(&port->lock, flags);
IRDA_DEBUG(0, "%s(), open count > 0\n", __func__ );
return;
}
set_bit(ASYNCB_CLOSING, &port->flags);
spin_unlock_irqrestore(&port->lock, flags);
/*
* Now we wait for the transmit buffer to clear; and we notify
* the line discipline to only process XON/XOFF characters.
*/
tty->closing = 1;
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent_from_close(tty, port->closing_wait);
ircomm_tty_shutdown(self);
tty_driver_flush_buffer(tty);
tty_ldisc_flush(tty);
tty_port_close_end(port, tty);
tty_port_tty_set(port, NULL);