13 void __lockfunc tty_lock(struct tty_struct *tty)  in tty_lock()  argument
15 	if (tty->magic != TTY_MAGIC) {  in tty_lock()
16 		pr_err("L Bad %p\n", tty);  in tty_lock()
20 	tty_kref_get(tty);  in tty_lock()
21 	mutex_lock(&tty->legacy_mutex);  in tty_lock()
25 void __lockfunc tty_unlock(struct tty_struct *tty)  in tty_unlock()  argument
27 	if (tty->magic != TTY_MAGIC) {  in tty_unlock()
28 		pr_err("U Bad %p\n", tty);  in tty_unlock()
32 	mutex_unlock(&tty->legacy_mutex);  in tty_unlock()
33 	tty_kref_put(tty);  in tty_unlock()
37 void __lockfunc tty_lock_slave(struct tty_struct *tty)  in tty_lock_slave()  argument
39 	if (tty && tty != tty->link)  in tty_lock_slave()
40 		tty_lock(tty);  in tty_lock_slave()
43 void __lockfunc tty_unlock_slave(struct tty_struct *tty)  in tty_unlock_slave()  argument
45 	if (tty && tty != tty->link)  in tty_unlock_slave()
46 		tty_unlock(tty);  in tty_unlock_slave()
49 void tty_set_lock_subclass(struct tty_struct *tty)  in tty_set_lock_subclass()  argument
51 	lockdep_set_subclass(&tty->legacy_mutex, TTY_LOCK_SLAVE);  in tty_set_lock_subclass()