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isicom: Split the close hardware bits out 

Start to extract and build a model for a common tty_port_close()

Signed-off-by: Alan Cox <alan@linux.intel.com>
This commit is contained in:
Alan Cox 2009-09-19 13:13:21 -07:00 committed by Live-CD User
parent 1e2b025453
commit 6f6412b4c7
1 changed files with 14 additions and 11 deletions
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25
drivers/char/isicom.c
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@ -952,19 +952,12 @@ static void isicom_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}
static void isicom_close(struct tty_struct *tty, struct file *filp)
static void isicom_close_port(struct tty_port *port)
{
struct isi_port *ip = tty->driver_data;
struct tty_port *port = &ip->port;
struct isi_board *card;
struct isi_port *ip = container_of(port, struct isi_port, port);
struct isi_board *card = ip->card;
unsigned long flags;
BUG_ON(!ip);
card = ip->card;
if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
return;
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
@ -974,9 +967,19 @@ static void isicom_close(struct tty_struct *tty, struct file *filp)
}
isicom_shutdown_port(ip);
spin_unlock_irqrestore(&card->card_lock, flags);
}
static void isicom_close(struct tty_struct *tty, struct file *filp)
{
struct isi_port *ip = tty->driver_data;
struct tty_port *port = &ip->port;
if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
return;
if (tty_port_close_start(port, tty, filp) == 0)
return;
isicom_close_port(port);
isicom_flush_buffer(tty);
tty_port_close_end(port, tty);
}