#define mmc_dev(x) ((x)->parent)
#define mmc_classdev(x) (&(x)->class_dev)
-#define mmc_hostname(x) ((x)->class_dev.bus_id)
+#define mmc_hostname(x) (dev_name(&(x)->class_dev))
extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
extern int mmc_resume_host(struct mmc_host *);