diff --git a/[refs] b/[refs]
index 46b9590c3f28..73073a7b5056 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 234f2725a5d03f78539f1d36cb32f2c4f9b1822c
+refs/heads/master: bdb4a1305723f985249210a803105dbc48e86b64
diff --git a/trunk/drivers/block/virtio_blk.c b/trunk/drivers/block/virtio_blk.c
index 67dcb193ab2e..e32b24b7a3a2 100644
--- a/trunk/drivers/block/virtio_blk.c
+++ b/trunk/drivers/block/virtio_blk.c
@@ -225,7 +225,7 @@ static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
 	struct gendisk *disk = bdev->bd_disk;
 	struct virtio_blk *vblk = disk->private_data;
 
-	if (cmd == 'VBID') {
+	if (cmd == 0x56424944) { /* 'VBID' */
 		void __user *usr_data = (void __user *)data;
 		char id_str[VIRTIO_BLK_ID_BYTES];
 		int err;