diff --git a/drivers/md/md.c b/drivers/md/md.c
index dd3dfe42d5a9d081c590018f1ac6325cfecdaf12..a20a71e5efd3ce0607993a84795e943a1706359d 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4075,8 +4075,10 @@ static void mddev_delayed_delete(struct work_struct *ws)
 {
 	mddev_t *mddev = container_of(ws, mddev_t, del_work);
 
-	if (mddev->private == &md_redundancy_group) {
+	if (mddev->private) {
 		sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
+		if (mddev->private != (void*)1)
+			sysfs_remove_group(&mddev->kobj, mddev->private);
 		if (mddev->sysfs_action)
 			sysfs_put(mddev->sysfs_action);
 		mddev->sysfs_action = NULL;
@@ -4287,10 +4289,7 @@ static int do_md_run(mddev_t * mddev)
 		sysfs_notify_dirent(rdev->sysfs_state);
 	}
 
-	md_probe(mddev->unit, NULL, NULL);
 	disk = mddev->gendisk;
-	if (!disk)
-		return -ENOMEM;
 
 	spin_lock(&pers_lock);
 	pers = find_pers(mddev->level, mddev->clevel);
@@ -4530,8 +4529,8 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
 			mddev->queue->unplug_fn = NULL;
 			mddev->queue->backing_dev_info.congested_fn = NULL;
 			module_put(mddev->pers->owner);
-			if (mddev->pers->sync_request)
-				mddev->private = &md_redundancy_group;
+			if (mddev->pers->sync_request && mddev->private == NULL)
+				mddev->private = (void*)1;
 			mddev->pers = NULL;
 			/* tell userspace to handle 'inactive' */
 			sysfs_notify_dirent(mddev->sysfs_state);
@@ -4578,9 +4577,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
 		}
 		mddev->bitmap_info.offset = 0;
 
-		/* make sure all md_delayed_delete calls have finished */
-		flush_scheduled_work();
-
 		export_array(mddev);
 
 		mddev->array_sectors = 0;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b5629c3e14fad7583d2bc8ace875c9adaf8c2bd6..ceb24afdc147aada31741b10213443375617257f 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5136,9 +5136,8 @@ static int stop(mddev_t *mddev)
 	mddev->thread = NULL;
 	mddev->queue->backing_dev_info.congested_fn = NULL;
 	blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
-	sysfs_remove_group(&mddev->kobj, &raid5_attrs_group);
 	free_conf(conf);
-	mddev->private = NULL;
+	mddev->private = &raid5_attrs_group;
 	return 0;
 }