242 struct tty_driver;
246 	struct tty_struct * (*lookup)(struct tty_driver *driver,
248 	int  (*install)(struct tty_driver *driver, struct tty_struct *tty);
249 	void (*remove)(struct tty_driver *driver, struct tty_struct *tty);
283 	int (*poll_init)(struct tty_driver *driver, int line, char *options);
284 	int (*poll_get_char)(struct tty_driver *driver, int line);
285 	void (*poll_put_char)(struct tty_driver *driver, int line, char ch);
290 struct tty_driver {  struct
306 	struct tty_driver *other; /* only used for the PTY driver */  argument
326 extern struct tty_driver *__tty_alloc_driver(unsigned int lines,  argument
328 extern void put_tty_driver(struct tty_driver *driver);
329 extern void tty_set_operations(struct tty_driver *driver,
331 extern struct tty_driver *tty_find_polling_driver(char *name, int *line);
333 extern void tty_driver_kref_put(struct tty_driver *driver);
343 static inline struct tty_driver *alloc_tty_driver(unsigned int lines)  in alloc_tty_driver()
345 	struct tty_driver *ret = tty_alloc_driver(lines, 0);  in alloc_tty_driver()
351 static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d)  in tty_driver_kref_get()