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Diffstat (limited to 'net/irda/ircomm/ircomm_tty.c')
-rw-r--r--net/irda/ircomm/ircomm_tty.c48
1 files changed, 1 insertions, 47 deletions
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index cfe352dfb484..4e35b45c1c73 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -509,64 +509,18 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp)
509{ 509{
510 struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data; 510 struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
511 struct tty_port *port = &self->port; 511 struct tty_port *port = &self->port;
512 unsigned long flags;
513 512
514 IRDA_DEBUG(0, "%s()\n", __func__ ); 513 IRDA_DEBUG(0, "%s()\n", __func__ );
515 514
516 IRDA_ASSERT(self != NULL, return;); 515 IRDA_ASSERT(self != NULL, return;);
517 IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;); 516 IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
518 517
519 spin_lock_irqsave(&port->lock, flags); 518 if (tty_port_close_start(port, tty, filp) == 0)
520
521 if (tty_hung_up_p(filp)) {
522 spin_unlock_irqrestore(&port->lock, flags);
523
524 IRDA_DEBUG(0, "%s(), returning 1\n", __func__ );
525 return;
526 }
527
528 if ((tty->count == 1) && (port->count != 1)) {
529 /*
530 * Uh, oh. tty->count is 1, which means that the tty
531 * structure will be freed. state->count should always
532 * be one in these conditions. If it's greater than
533 * one, we've got real problems, since it means the
534 * serial port won't be shutdown.
535 */
536 IRDA_DEBUG(0, "%s(), bad serial port count; "
537 "tty->count is 1, state->count is %d\n", __func__ ,
538 port->count);
539 port->count = 1;
540 }
541
542 if (--port->count < 0) {
543 IRDA_ERROR("%s(), bad serial port count for ttys%d: %d\n",
544 __func__, self->line, port->count);
545 port->count = 0;
546 }
547 if (port->count) {
548 spin_unlock_irqrestore(&port->lock, flags);
549
550 IRDA_DEBUG(0, "%s(), open count > 0\n", __func__ );
551 return; 519 return;
552 }
553
554 set_bit(ASYNCB_CLOSING, &port->flags);
555
556 spin_unlock_irqrestore(&port->lock, flags);
557
558 /*
559 * Now we wait for the transmit buffer to clear; and we notify
560 * the line discipline to only process XON/XOFF characters.
561 */
562 tty->closing = 1;
563 if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
564 tty_wait_until_sent_from_close(tty, port->closing_wait);
565 520
566 ircomm_tty_shutdown(self); 521 ircomm_tty_shutdown(self);
567 522
568 tty_driver_flush_buffer(tty); 523 tty_driver_flush_buffer(tty);
569 tty_ldisc_flush(tty);
570 524
571 tty_port_close_end(port, tty); 525 tty_port_close_end(port, tty);
572 tty_port_tty_set(port, NULL); 526 tty_port_tty_set(port, NULL);