5 extern int tty_buffer_set_limit(struct tty_port *port, int limit);
6 extern int tty_buffer_space_avail(struct tty_port *port);
7 extern int tty_buffer_request_room(struct tty_port *port, size_t size);
8 extern int tty_insert_flip_string_flags(struct tty_port *port,
10 extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
12 extern int tty_prepare_flip_string(struct tty_port *port,
14 extern void tty_flip_buffer_push(struct tty_port *port);
15 void tty_schedule_flip(struct tty_port *port);
16 int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
18 static inline int tty_insert_flip_char(struct tty_port *port,  in tty_insert_flip_char()  argument
21 	struct tty_buffer *tb = port->buf.tail;  in tty_insert_flip_char()
31 	return __tty_insert_flip_char(port, ch, flag);  in tty_insert_flip_char()
34 static inline int tty_insert_flip_string(struct tty_port *port,  in tty_insert_flip_string()  argument
37 	return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);  in tty_insert_flip_string()
40 extern void tty_buffer_lock_exclusive(struct tty_port *port);
41 extern void tty_buffer_unlock_exclusive(struct tty_port *port);