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-rw-r--r--include/linux/tty.h18
1 files changed, 16 insertions, 2 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 189ca80494d1..63b62865c8e9 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -255,7 +255,6 @@ struct tty_struct {
255 int count; 255 int count;
256 struct winsize winsize; /* termios mutex */ 256 struct winsize winsize; /* termios mutex */
257 unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1; 257 unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1;
258 unsigned char warned:1;
259 unsigned char ctrl_status; /* ctrl_lock */ 258 unsigned char ctrl_status; /* ctrl_lock */
260 unsigned int receive_room; /* Bytes free for queue */ 259 unsigned int receive_room; /* Bytes free for queue */
261 int flow_change; 260 int flow_change;
@@ -437,13 +436,28 @@ extern void tty_flush_to_ldisc(struct tty_struct *tty);
437extern void tty_buffer_free_all(struct tty_port *port); 436extern void tty_buffer_free_all(struct tty_port *port);
438extern void tty_buffer_flush(struct tty_struct *tty); 437extern void tty_buffer_flush(struct tty_struct *tty);
439extern void tty_buffer_init(struct tty_port *port); 438extern void tty_buffer_init(struct tty_port *port);
440extern speed_t tty_get_baud_rate(struct tty_struct *tty);
441extern speed_t tty_termios_baud_rate(struct ktermios *termios); 439extern speed_t tty_termios_baud_rate(struct ktermios *termios);
442extern speed_t tty_termios_input_baud_rate(struct ktermios *termios); 440extern speed_t tty_termios_input_baud_rate(struct ktermios *termios);
443extern void tty_termios_encode_baud_rate(struct ktermios *termios, 441extern void tty_termios_encode_baud_rate(struct ktermios *termios,
444 speed_t ibaud, speed_t obaud); 442 speed_t ibaud, speed_t obaud);
445extern void tty_encode_baud_rate(struct tty_struct *tty, 443extern void tty_encode_baud_rate(struct tty_struct *tty,
446 speed_t ibaud, speed_t obaud); 444 speed_t ibaud, speed_t obaud);
445
446/**
447 * tty_get_baud_rate - get tty bit rates
448 * @tty: tty to query
449 *
450 * Returns the baud rate as an integer for this terminal. The
451 * termios lock must be held by the caller and the terminal bit
452 * flags may be updated.
453 *
454 * Locking: none
455 */
456static inline speed_t tty_get_baud_rate(struct tty_struct *tty)
457{
458 return tty_termios_baud_rate(&tty->termios);
459}
460
447extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old); 461extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
448extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b); 462extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b);
449extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt); 463extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);