diff options
| author | George Spelvin <linux@horizon.com> | 2013-02-10 04:44:30 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-13 10:17:06 -0800 |
| commit | 42381572f586d4da57e7d65e0fcb45422be3ba7b (patch) | |
| tree | daf1547e12333175cc72aab0973fb9f09557a79d /drivers/tty | |
| parent | 593fb1ae457aab28b392ac114f6e3358788da985 (diff) | |
pps: Additional cleanups in uart_handle_dcd_change
An extension of the previous commit, there is no semantic change
here, just fewer lines of source code.
Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 765be520cd2..6ce40c1822f 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2723,15 +2723,15 @@ EXPORT_SYMBOL(uart_match_port); */ void uart_handle_dcd_change(struct uart_port *uport, unsigned int status) { - struct uart_state *state = uport->state; - struct tty_port *port = &state->port; - struct tty_ldisc *ld = NULL; + struct tty_port *port = &uport->state->port; struct tty_struct *tty = port->tty; + struct tty_ldisc *ld = tty ? tty_ldisc_ref(tty) : NULL; - if (tty) - ld = tty_ldisc_ref(tty); - if (ld && ld->ops->dcd_change) - ld->ops->dcd_change(tty, status); + if (ld) { + if (ld->ops->dcd_change) + ld->ops->dcd_change(tty, status); + tty_ldisc_deref(ld); + } uport->icount.dcd++; #ifdef CONFIG_HARD_PPS @@ -2745,9 +2745,6 @@ void uart_handle_dcd_change(struct uart_port *uport, unsigned int status) else if (tty) tty_hangup(tty); } - - if (ld) - tty_ldisc_deref(ld); } EXPORT_SYMBOL_GPL(uart_handle_dcd_change); |