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serial: introduce tty krefs 

Initially just use the helper and thus krefs when we set and clear the
port values.

Signed-off-by: Alan Cox <alan@linux.intel.com>
This commit is contained in:
Alan Cox 2009-09-19 13:13:33 -07:00 committed by Live-CD User
parent 016af53a6d
commit 7b01478f97
1 changed files with 3 additions and 3 deletions
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6
drivers/serial/serial_core.c
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@ -1333,7 +1333,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
tty_ldisc_flush(tty);
tty->closing = 0;
port->tty = NULL;
tty_port_tty_set(port, NULL);
if (port->blocked_open) {
if (port->close_delay)
@ -1431,7 +1431,7 @@ static void uart_hangup(struct tty_struct *tty)
uart_shutdown(state);
port->count = 0;
clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags);
port->tty = NULL;
tty_port_tty_set(port, NULL);
wake_up_interruptible(&port->open_wait);
wake_up_interruptible(&port->delta_msr_wait);
}
@ -1639,7 +1639,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
state->uart_port->state = state;
tty->low_latency = (state->uart_port->flags & UPF_LOW_LATENCY) ? 1 : 0;
tty->alt_speed = 0;
port->tty = tty;
tty_port_tty_set(port, tty);
/*
* If the port is in the middle of closing, bail out now.