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-rw-r--r--block/genhd.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/block/genhd.c b/block/genhd.c
index b85db1f2233c..d41176eb1f36 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -895,6 +895,9 @@ void del_gendisk(struct gendisk *disk)
might_sleep();
+ if (WARN_ON_ONCE(!disk->queue))
+ return;
+
blk_integrity_del(disk);
disk_del_events(disk);
@@ -917,20 +920,18 @@ void del_gendisk(struct gendisk *disk)
disk->flags &= ~GENHD_FL_UP;
up_write(&disk->lookup_sem);
- if (!(disk->flags & GENHD_FL_HIDDEN))
+ if (!(disk->flags & GENHD_FL_HIDDEN)) {
sysfs_remove_link(&disk_to_dev(disk)->kobj, "bdi");
- if (disk->queue) {
+
/*
* Unregister bdi before releasing device numbers (as they can
* get reused and we'd get clashes in sysfs).
*/
- if (!(disk->flags & GENHD_FL_HIDDEN))
- bdi_unregister(disk->queue->backing_dev_info);
- blk_unregister_queue(disk);
- } else {
- WARN_ON(1);
+ bdi_unregister(disk->queue->backing_dev_info);
}
+ blk_unregister_queue(disk);
+
if (!(disk->flags & GENHD_FL_HIDDEN))
blk_unregister_region(disk_devt(disk), disk->minors);
/*