virtio_blk: Revert serial number support
This reverts "Add serial number support for virtio_blk, V4a".
Turns out that virtio_pci, lguest and s/390 all have an 8 bit limit
on virtio config space, so noone could ever use this.
This is coming back later in a cleaner form.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: john cooper <john.cooper@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 55635d1..51042f0ba7 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -182,34 +182,6 @@
vblk->vq->vq_ops->kick(vblk->vq);
}
-/* return ATA identify data
- */
-static int virtblk_identify(struct gendisk *disk, void *argp)
-{
- struct virtio_blk *vblk = disk->private_data;
- void *opaque;
- int err = -ENOMEM;
-
- opaque = kmalloc(VIRTIO_BLK_ID_BYTES, GFP_KERNEL);
- if (!opaque)
- goto out;
-
- err = virtio_config_buf(vblk->vdev, VIRTIO_BLK_F_IDENTIFY,
- offsetof(struct virtio_blk_config, identify), opaque,
- VIRTIO_BLK_ID_BYTES);
-
- if (err)
- goto out_kfree;
-
- if (copy_to_user(argp, opaque, VIRTIO_BLK_ID_BYTES))
- err = -EFAULT;
-
-out_kfree:
- kfree(opaque);
-out:
- return err;
-}
-
static void virtblk_prepare_flush(struct request_queue *q, struct request *req)
{
req->cmd_type = REQ_TYPE_LINUX_BLOCK;
@@ -221,10 +193,6 @@
{
struct gendisk *disk = bdev->bd_disk;
struct virtio_blk *vblk = disk->private_data;
- void __user *argp = (void __user *)data;
-
- if (cmd == HDIO_GET_IDENTITY)
- return virtblk_identify(disk, argp);
/*
* Only allow the generic SCSI ioctls if the host can support it.
@@ -232,7 +200,8 @@
if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
return -ENOTTY;
- return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
+ return scsi_cmd_ioctl(disk->queue, disk, mode, cmd,
+ (void __user *)data);
}
/* We provide getgeo only to please some old bootloader/partitioning tools */
@@ -443,7 +412,7 @@
static unsigned int features[] = {
VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,
VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
- VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY, VIRTIO_BLK_F_FLUSH
+ VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_FLUSH
};
/*