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TTY: amiserial, use tty_port_close_start 

Again, no need to duplicate the code. Let's use the helper.

Amiserial changes are only free of compilation errors. I have no
access to the hardware.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-03-05 14:52:49 +01:00 committed by Greg Kroah-Hartman
parent b8edebe4b8
commit 9b937421e8
1 changed files with 2 additions and 42 deletions
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44
drivers/tty/amiserial.c
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@ -1389,53 +1389,13 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
{ {
struct serial_state *state = tty->driver_data; struct serial_state *state = tty->driver_data;
struct tty_port *port = &state->tport; struct tty_port *port = &state->tport;
unsigned long flags;
if (!state || serial_paranoia_check(state, tty->name, "rs_close")) if (serial_paranoia_check(state, tty->name, "rs_close"))
return; return;
local_irq_save(flags); if (tty_port_close_start(port, tty, filp) == 0)
if (tty_hung_up_p(filp)) {
DBG_CNT("before DEC-hung");
local_irq_restore(flags);
return; return;
}
#ifdef SERIAL_DEBUG_OPEN
printk("rs_close ttys%d, count = %d\n", state->line, port->count);
#endif
if ((tty->count == 1) && (port->count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. port->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.
*/
printk("rs_close: bad serial port count; tty->count is 1, "
"port->count is %d\n", state->tport.count);
port->count = 1;
}
if (--port->count < 0) {
printk("rs_close: bad serial port count for ttys%d: %d\n",
tty->index, port->count);
port->count = 0;
}
if (port->count) {
DBG_CNT("before DEC-2");
local_irq_restore(flags);
return;
}
port->flags |= ASYNC_CLOSING;
/*
* Now we wait for the transmit buffer to clear; and we notify
* the line discipline to only process XON/XOFF characters.
*/
tty->closing = 1;
local_irq_restore(flags);
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, port->closing_wait);
/* /*
* At this point we stop accepting input. To do this, we * At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the * disable the receive line status interrupts, and tell the