diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7daa7b1..c40ce9f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2003,6 +2003,7 @@
 	kobject_init(&rdev->kobj);
 
 	rdev->desc_nr = -1;
+	rdev->saved_raid_disk = -1;
 	rdev->flags = 0;
 	rdev->data_offset = 0;
 	rdev->sb_events = 0;