diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index dc4c6e3..ae98d67 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -127,6 +127,7 @@
 }
 
 #define mmc_dev(x)	((x)->parent)
+#define mmc_classdev(x)	(&(x)->class_dev)
 #define mmc_hostname(x)	((x)->class_dev.bus_id)
 
 extern int mmc_suspend_host(struct mmc_host *, pm_message_t);