diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index 7e30ab2..8a33f35 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -2038,7 +2038,7 @@
 			goto abort;
 		}
 		p->rdev = NULL;
-		synchronize_kernel();
+		synchronize_rcu();
 		if (atomic_read(&rdev->nr_pending)) {
 			/* lost the race, try later */
 			err = -EBUSY;