static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount
static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount