1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7a491771ff4d..0ea34858637a 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2722,6 +2722,7 @@ slot_store(struct md_rdev *rdev, const char *buf, size_t len)
                         rdev->saved_raid_disk = slot;
                 else
                         rdev->saved_raid_disk = -1;
+                clear_bit(In_sync, &rdev->flags);
                 err = rdev->mddev->pers->
                         hot_add_disk(rdev->mddev, rdev);
                 if (err) {