diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 845020d..8c5f713 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -62,6 +62,7 @@
 struct mmc_host_ops {
 	void	(*request)(struct mmc_host *host, struct mmc_request *req);
 	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
+	int	(*get_ro)(struct mmc_host *host);
 };
 
 struct mmc_card;