extern int cio_get_options (struct subchannel *);
extern int cio_modify (struct subchannel *);
/* Use with care. */
-#ifdef CONFIG_CCW_CONSOLE
extern struct subchannel *cio_probe_console(void);
extern void cio_release_console(void);
extern int cio_is_console(int irq);
extern struct subchannel *cio_get_console_subchannel(void);
-#else
-#define cio_is_console(irq) 0
-#define cio_get_console_subchannel() NULL
-#endif
extern int cio_show_msg;