141 struct console {  struct
143 	void	(*write)(struct console *, const char *, unsigned);  argument
144 	int	(*read)(struct console *, char *, unsigned);  argument
145 	struct tty_driver *(*device)(struct console *, int *);  argument
147 	int	(*setup)(struct console *, char *);  argument
148 	int	(*exit)(struct console *);  argument
149 	int	(*match)(struct console *, char *name, int idx, char *options);  argument
154 	struct	 console *next;  argument
164 extern struct console *early_console;
172 extern void register_console(struct console *);
173 extern int unregister_console(struct console *);
174 extern struct console *console_drivers;
182 extern void console_stop(struct console *);
183 extern void console_start(struct console *);
185 extern int braille_register_console(struct console *, int index,
187 extern int braille_unregister_console(struct console *);