diff --git a/drivers/md/md.c b/drivers/md/md.c
index 5c95ccb..accae44 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8075,12 +8075,13 @@
 {
 	struct list_head *tmp;
 	mddev_t *mddev;
+	int need_delay = 0;
 
 	if ((code == SYS_DOWN) || (code == SYS_HALT) || (code == SYS_POWER_OFF)) {
 
 		printk(KERN_INFO "md: stopping all md devices.\n");
 
-		for_each_mddev(mddev, tmp)
+		for_each_mddev(mddev, tmp) {
 			if (mddev_trylock(mddev)) {
 				/* Force a switch to readonly even array
 				 * appears to still be in use.  Hence
@@ -8089,13 +8090,16 @@
 				md_set_readonly(mddev, 100);
 				mddev_unlock(mddev);
 			}
+			need_delay = 1;
+		}
 		/*
 		 * certain more exotic SCSI devices are known to be
 		 * volatile wrt too early system reboots. While the
 		 * right place to handle this issue is the given
 		 * driver, we do want to have a safe RAID driver ...
 		 */
-		mdelay(1000*1);
+		if (need_delay)
+			mdelay(1000*1);
 	}
 	return NOTIFY_DONE;
 }