From a6614999e800cf3a134ce93ea46ef837e3c0e76e Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 2 Jan 2009 13:46:50 +0000 Subject: tty: Introduce some close helpers for ports Again this is a lot of common code we can unify Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds --- drivers/char/isicom.c | 66 ++++++++------------------------------------------- 1 file changed, 10 insertions(+), 56 deletions(-) (limited to 'drivers/char/isicom.c') diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index bac55cf4424..24aa6e88e22 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -945,76 +945,30 @@ static void isicom_flush_buffer(struct tty_struct *tty) static void isicom_close(struct tty_struct *tty, struct file *filp) { - struct isi_port *port = tty->driver_data; + struct isi_port *ip = tty->driver_data; + struct tty_port *port = &ip->port; struct isi_board *card; unsigned long flags; - if (!port) - return; - card = port->card; - if (isicom_paranoia_check(port, tty->name, "isicom_close")) - return; - - pr_dbg("Close start!!!.\n"); - - spin_lock_irqsave(&port->port.lock, flags); - if (tty_hung_up_p(filp)) { - spin_unlock_irqrestore(&port->port.lock, flags); - return; - } - - if (tty->count == 1 && port->port.count != 1) { - printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port " - "count tty->count = 1 port count = %d.\n", - card->base, port->port.count); - port->port.count = 1; - } - if (--port->port.count < 0) { - printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port " - "count for channel%d = %d", card->base, port->channel, - port->port.count); - port->port.count = 0; - } + BUG_ON(!ip); - if (port->port.count) { - spin_unlock_irqrestore(&port->port.lock, flags); + card = ip->card; + if (isicom_paranoia_check(ip, tty->name, "isicom_close")) return; - } - port->port.flags |= ASYNC_CLOSING; - tty->closing = 1; - spin_unlock_irqrestore(&port->port.lock, flags); - if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, port->port.closing_wait); /* indicate to the card that no more data can be received on this port */ spin_lock_irqsave(&card->card_lock, flags); - if (port->port.flags & ASYNC_INITIALIZED) { - card->port_status &= ~(1 << port->channel); + if (port->flags & ASYNC_INITIALIZED) { + card->port_status &= ~(1 << ip->channel); outw(card->port_status, card->base + 0x02); } - isicom_shutdown_port(port); + isicom_shutdown_port(ip); spin_unlock_irqrestore(&card->card_lock, flags); isicom_flush_buffer(tty); - tty_ldisc_flush(tty); - - spin_lock_irqsave(&port->port.lock, flags); - tty->closing = 0; - - if (port->port.blocked_open) { - spin_unlock_irqrestore(&port->port.lock, flags); - if (port->port.close_delay) { - pr_dbg("scheduling until time out.\n"); - msleep_interruptible( - jiffies_to_msecs(port->port.close_delay)); - } - spin_lock_irqsave(&port->port.lock, flags); - wake_up_interruptible(&port->port.open_wait); - } - port->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); - wake_up_interruptible(&port->port.close_wait); - spin_unlock_irqrestore(&port->port.lock, flags); + + tty_port_close_end(port, tty); } /* write et all */ -- cgit v1.2.3