int unregister_con_driver(const struct consw *csw);
int take_over_console(const struct consw *sw, int first, int last, int deflt);
void give_up_console(const struct consw *sw);
+#ifdef CONFIG_HW_CONSOLE
int con_debug_enter(struct vc_data *vc);
int con_debug_leave(void);
+#else
+#define con_debug_enter(vc) (0)
+#define con_debug_leave() (0)
+#endif
/* scroll */
#define SM_UP (1)