[PATCH] coccinelle: api: fix kobj_to_dev.cocci warnings

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
TO: Denis Efremov <efremov@linux.com>
CC: Julia Lawall <Julia.Lawall@lip6.fr>
CC: "Michael S. Tsirkin" <mst@redhat.com>
CC: Jason Wang <jasowang@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: virtualization(a)lists.linux-foundation.org
CC: linux-block(a)vger.kernel.org
CC: linux-kernel(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

drivers/block/virtio_blk.c:634:60-61: WARNING opportunity for kobj_to_dev()


 Use kobj_to_dev() instead of container_of()

Generated by: scripts/coccinelle/api/kobj_to_dev.cocci

Fixes: a2fc3718bc22 ("coccinelle: api: add kobj_to_dev.cocci script")
CC: Denis Efremov <efremov@linux.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux.git for-5.10
head:   e16a7c47d56b4eeee82be662014c145bce2380e5
commit: a2fc3718bc22e85378085568ecc5765fb28cabce [3/9] coccinelle: api: add kobj_to_dev.cocci script
:::::: branch date: 6 hours ago
:::::: commit date: 5 weeks ago

Please take the patch only if it's a positive warning. Thanks!

 virtio_blk.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -631,7 +631,7 @@ static struct attribute *virtblk_attrs[]
 static umode_t virtblk_attrs_are_visible(struct kobject *kobj,
 		struct attribute *a, int n)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct gendisk *disk = dev_to_disk(dev);
 	struct virtio_blk *vblk = disk->private_data;
 	struct virtio_device *vdev = vblk->vdev;