Add common BusState

Implement and use a common device bus state.  The main side-effect is
that creating a bus and attaching it to a parent device are no longer
separate operations.  For legacy code we allow a NULL parent, but that
should go away eventually.

Also tweak creation code to veriry theat a device in on the right bus.

Signed-off-by: Paul Brook <paul@codesourcery.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/hw/pci.h b/hw/pci.h
index 09f9799dcd..0405837f73 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -183,7 +183,8 @@ int pci_device_load(PCIDevice *s, QEMUFile *f);
 
 typedef void (*pci_set_irq_fn)(qemu_irq *pic, int irq_num, int level);
 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
-PCIBus *pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
+PCIBus *pci_register_bus(DeviceState *parent, const char *name,
+                         pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
                          qemu_irq *pic, int devfn_min, int nirq);
 
 PCIDevice *pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn,