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From 9813363c031fd56a536dfafd64dcc9bc430f9bb1 Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Thu, 23 Jan 2014 14:03:38 +0100
Subject: [PATCH 11/14] virtio-balloon: switch exit callback to VirtioDeviceClass

RH-Author: Markus Armbruster <armbru@redhat.com>
Message-id: <1390485820-7585-9-git-send-email-armbru@redhat.com>
Patchwork-id: 56930
O-Subject: [PATCH 7.0 qemu-kvm 08/10] virtio-balloon: switch exit callback to VirtioDeviceClass
Bugzilla: 983344
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Marcel Apfelbaum <marcel.a@redhat.com>
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>

From: Paolo Bonzini <pbonzini@redhat.com>

This ensures hot-unplug is handled properly by the proxy, and avoids
leaking bus_name which is freed by virtio_device_exit.

Cc: qemu-stable@nongnu.org
Acked-by: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit baa61b9870dd7e0bb07e0ae61c6ec805db13f699)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/virtio/virtio-balloon.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/virtio/virtio-balloon.c |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index 85661f6..76c607f 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -369,16 +369,14 @@ static int virtio_balloon_device_init(VirtIODevice *vdev)
     return 0;
 }
 
-static int virtio_balloon_device_exit(DeviceState *qdev)
+static void virtio_balloon_device_exit(VirtIODevice *vdev)
 {
-    VirtIOBalloon *s = VIRTIO_BALLOON(qdev);
-    VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
+    VirtIOBalloon *s = VIRTIO_BALLOON(vdev);
 
     balloon_stats_destroy_timer(s);
     qemu_remove_balloon_handler(s);
-    unregister_savevm(qdev, "virtio-balloon", s);
+    unregister_savevm(DEVICE(vdev), "virtio-balloon", s);
     virtio_cleanup(vdev);
-    return 0;
 }
 
 static Property virtio_balloon_properties[] = {
@@ -389,10 +387,10 @@ 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->props = virtio_balloon_properties;
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     vdc->init = virtio_balloon_device_init;
+    vdc->exit = virtio_balloon_device_exit;
     vdc->get_config = virtio_balloon_get_config;
     vdc->set_config = virtio_balloon_set_config;
     vdc->get_features = virtio_balloon_get_features;
-- 
1.7.1