From e0a83fc2c1582dc8d4453849852ebe6c258b7c3a Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 2 Apr 2013 15:50:00 +0200
Subject: [PATCH] qom: do nothing on unparent of object without parent

Otherwise, device_unparent will fail to get a canonical path of
the object.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1364910600-3418-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 qom/object.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/qom/object.c b/qom/object.c
index 881814943b..093502e509 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -362,6 +362,10 @@ static void object_property_del_child(Object *obj, Object *child, Error **errp)
 
 void object_unparent(Object *obj)
 {
+    if (!obj->parent) {
+        return;
+    }
+
     object_ref(obj);
     if (obj->class->unparent) {
         (obj->class->unparent)(obj);