diff mbox series

[2/2] block: remove unnecessary statement in blk_free_devt

Message ID 20190318140703.28963-3-yuyufen@huawei.com (mailing list archive)
State New, archived
Headers show
Series fix use-after-free of gendisk | expand

Commit Message

Yufen Yu March 18, 2019, 2:07 p.m. UTC 
If devt is MKDEV(0, 0), its MAJOR cannot be BLOCK_EXT_MAJOR,
so, I think we can remove the statement.

Signed-off-by: Yufen Yu <yuyufen@huawei.com>
---
 block/genhd.c | 3 ---
 1 file changed, 3 deletions(-)
diff mbox series

Patch

diff --git a/block/genhd.c b/block/genhd.c
index f00198e6758a..961b2bc4634f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -522,9 +522,6 @@  int blk_alloc_devt(struct hd_struct *part, dev_t *devt)
  */
 void blk_free_devt(dev_t devt)
 {
-	if (devt == MKDEV(0, 0))
-		return;
-
 	if (MAJOR(devt) == BLOCK_EXT_MAJOR) {
 		spin_lock_bh(&ext_devt_lock);
 		idr_remove(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));