struct tty_driver *alloc_tty_driver(int lines);
void put_tty_driver(struct tty_driver *driver);
-void tty_set_operations(struct tty_driver *driver, struct tty_operations *op);
+void tty_set_operations(struct tty_driver *driver,
+ const struct tty_operations *op);
/* tty driver magic number */
#define TTY_DRIVER_MAGIC 0x5402