TTY_LOCK_SLAVE    404 drivers/tty/pty.c 	lockdep_set_subclass(&o_tty->termios_rwsem, TTY_LOCK_SLAVE);
TTY_LOCK_SLAVE    603 drivers/tty/tty_buffer.c 	lockdep_set_subclass(&port->buf.lock, TTY_LOCK_SLAVE);
TTY_LOCK_SLAVE     59 drivers/tty/tty_mutex.c 	lockdep_set_subclass(&tty->legacy_mutex, TTY_LOCK_SLAVE);