static void acm_tty_hangup(struct tty_struct *tty)
{
struct acm *acm = tty->driver_data;
tty_port_hangup(&acm->port);
mutex_lock(&open_mutex);
acm_port_down(acm);
mutex_unlock(&open_mutex);
}
static void acm_tty_close(struct tty_struct *tty, struct file *filp)
{
struct acm *acm = tty->driver_data;
/* Perform the closing process and see if we need to do the hardware
shutdown */
if (!acm || tty_port_close_start(&acm->port, tty, filp) == 0)
return;
acm_port_down(acm, 0);
tty_port_close_end(&acm->port, tty);
mutex_lock(&open_mutex);
tty_port_tty_set(&acm->port, NULL);
if (!acm->dev)
acm_tty_unregister(acm);
mutex_unlock(&open_mutex);
}
static void acm_tty_hangup(struct tty_struct *tty)
{
struct acm *acm = tty->driver_data;
tty_port_hangup(&acm->port);
acm_port_down(acm);
}
