block: Generalize change_cb() to BlockDevOps

So we can more easily add device model callbacks.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 2a8ccd0aa9..c10afa9962 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -552,6 +552,10 @@ static void virtio_blk_change_cb(void *opaque, int reason)
     }
 }
 
+static const BlockDevOps virtio_block_ops = {
+    .change_cb = virtio_blk_change_cb,
+};
+
 VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
                               char **serial)
 {
@@ -598,7 +602,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
     register_savevm(dev, "virtio-blk", virtio_blk_id++, 2,
                     virtio_blk_save, virtio_blk_load, s);
     bdrv_set_removable(s->bs, 0);
-    bdrv_set_change_cb(s->bs, virtio_blk_change_cb, s);
+    bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
     s->bs->buffer_alignment = conf->logical_block_size;
 
     add_boot_device_path(conf->bootindex, dev, "/disk@0,0");