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virtio-9p: fix virtio-9p child refcount in transports 

object_initialize() leaves the object with a refcount of 1.
object_property_add_child() adds its own reference which is
dropped again when the property is deleted.

The upshot of this is that we always have a refcount >= 1. Upon
unplug the virtio-9p child is not finalized!

Drop our reference after the child property has been added to the
parent.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Gonglei 2014-09-30 14:10:37 +08:00 committed by Paolo Bonzini
parent 48833071d9
commit 8f3d60e568
1 changed files with 1 additions and 0 deletions
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hw/virtio/virtio-pci.c
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@ -950,6 +950,7 @@ static void virtio_9p_pci_instance_init(Object *obj)
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_9P);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
object_unref(OBJECT(&dev->vdev));
}
static const TypeInfo virtio_9p_pci_info = {