* -ENOSYS when not supported (equal to NULL callback)
* or a negative errno value when something bad happened
*
- * Return values for the get_ro callback should be:
+ * Return values for the get_cd callback should be:
* 0 for a absent card
* 1 for a present card
* -ENOSYS when not supported (equal to NULL callback)
#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 *);