Function tty_alloc

freebsd/kern/tty.c:1047–1052

 */

struct tty *
tty_alloc(struct ttydevsw *tsw, void *sc)
{

	return (tty_alloc_mutex(tsw, sc, NULL));
}

struct tty *
tty_alloc_mutex(struct ttydevsw *tsw, void *sc, struct mtx *mutex)