From 62d7ba669dbd5b4c92664eea453d28448ab9cb4b Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 25 Jan 2013 14:12:35 +0100
Subject: [PATCH] qdev: add reference for the bus while it is referred to by
 the DeviceState

Now that the unparent callbacks are complete, we can correctly account
more missing references.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 hw/qdev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/qdev.c b/hw/qdev.c
index 6f1b3117ff..1dabcad2a6 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -100,6 +100,7 @@ static void bus_add_child(BusState *bus, DeviceState *child)
 void qdev_set_parent_bus(DeviceState *dev, BusState *bus)
 {
     dev->parent_bus = bus;
+    object_ref(OBJECT(bus));
     bus_add_child(bus, dev);
 }
 
@@ -773,6 +774,8 @@ static void device_unparent(Object *obj)
     }
     if (dev->parent_bus) {
         bus_remove_child(dev->parent_bus, dev);
+        object_unref(OBJECT(dev->parent_bus));
+        dev->parent_bus = NULL;
     }
 }