diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index fc24b38..c67d19b 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -231,6 +231,7 @@
 	unsigned int		max_req_size;	/* maximum number of bytes in one req */
 	unsigned int		max_blk_size;	/* maximum size of one mmc block */
 	unsigned int		max_blk_count;	/* maximum number of blocks in one req */
+	unsigned int		max_discard_to;	/* max. discard timeout in ms */
 
 	/* private data */
 	spinlock_t		lock;		/* lock for claim and bus ops */