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-rw-r--r--drivers/block/virtio_blk.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 67dcb193ab2e..e32b24b7a3a2 100644
--- a/drivers/block/virtio_blk.c
+++ b/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;