[Qemu-devel] [PATCH for-next v2 15/22] virtio-balloon: Convert to QOM realize

["Andreas Färber" <afaerber@suse.de>]

Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/virtio/virtio-balloon.c         | 22 +++++++++++++---------
 include/hw/virtio/virtio-balloon.h |  2 ++
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index 3bab5db..9b65732 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -337,10 +337,12 @@ static int virtio_balloon_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
-static int virtio_balloon_device_init(VirtIODevice *vdev)
+static void virtio_balloon_device_realize(DeviceState *dev, Error **errp)
 {
-    DeviceState *dev = DEVICE(vdev);
+    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VirtIOBalloon *s = VIRTIO_BALLOON(dev);
+    ObjectClass *parent_oc = VIRTIO_BALLOON_GET_PARENT_CLASS(dev);
+    DeviceClass *parent_dc = DEVICE_CLASS(parent_oc);
     int ret;
 
     virtio_init(vdev, "virtio-balloon", VIRTIO_ID_BALLOON, 8);
@@ -349,8 +351,9 @@ static int virtio_balloon_device_init(VirtIODevice *vdev)
                                    virtio_balloon_stat, s);
 
     if (ret < 0) {
+        error_setg(errp, "Adding balloon handler failed");
         virtio_cleanup(vdev);
-        return -1;
+        return;
     }
 
     s->ivq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output);
@@ -367,19 +370,19 @@ static int virtio_balloon_device_init(VirtIODevice *vdev)
                         balloon_stats_get_poll_interval,
                         balloon_stats_set_poll_interval,
                         NULL, s, NULL);
-    return 0;
+
+    parent_dc->realize(dev, errp);
 }
 
-static int virtio_balloon_device_exit(DeviceState *dev)
+static void virtio_balloon_device_unrealize(DeviceState *dev, Error **errp)
 {
-    VirtIOBalloon *s = VIRTIO_BALLOON(dev);
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+    VirtIOBalloon *s = VIRTIO_BALLOON(dev);
 
     balloon_stats_destroy_timer(s);
     qemu_remove_balloon_handler(s);
     unregister_savevm(dev, "virtio-balloon", s);
     virtio_cleanup(vdev);
-    return 0;
 }
 
 static Property virtio_balloon_properties[] = {
@@ -390,10 +393,11 @@ static void virtio_balloon_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
-    dc->exit = virtio_balloon_device_exit;
+
+    dc->realize = virtio_balloon_device_realize;
+    dc->unrealize = virtio_balloon_device_unrealize;
     dc->props = virtio_balloon_properties;
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
-    vdc->init = virtio_balloon_device_init;
     vdc->get_config = virtio_balloon_get_config;
     vdc->set_config = virtio_balloon_set_config;
     vdc->get_features = virtio_balloon_get_features;
diff --git a/include/hw/virtio/virtio-balloon.h b/include/hw/virtio/virtio-balloon.h
index f863bfe..bf3846c 100644
--- a/include/hw/virtio/virtio-balloon.h
+++ b/include/hw/virtio/virtio-balloon.h
@@ -21,6 +21,8 @@
 #define TYPE_VIRTIO_BALLOON "virtio-balloon-device"
 #define VIRTIO_BALLOON(obj) \
         OBJECT_CHECK(VirtIOBalloon, (obj), TYPE_VIRTIO_BALLOON)
+#define VIRTIO_BALLOON_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_BALLOON)
 
 /* from Linux's linux/virtio_balloon.h */
 
-- 
1.8.1.4