pc: add I440FX QOM cast macro

Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Message-id: 1375109277-25561-3-git-send-email-imammedo@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/pci-host/piix.c

@@ -38,6 +38,10 @@
  * http://download.intel.com/design/chipsets/datashts/29054901.pdf
  */
 
+#define TYPE_I440FX_PCI_HOST_BRIDGE "i440FX-pcihost"
+#define I440FX_PCI_HOST_BRIDGE(obj) \
+    OBJECT_CHECK(I440FXState, (obj), TYPE_I440FX_PCI_HOST_BRIDGE)
+
 typedef struct I440FXState {
     PCIHostState parent_obj;
 } I440FXState;
@@ -257,7 +261,7 @@ static PCIBus *i440fx_common_init(const char *device_name,
     PCII440FXState *f;
     unsigned i;
 
-    dev = qdev_create(NULL, "i440FX-pcihost");
+    dev = qdev_create(NULL, TYPE_I440FX_PCI_HOST_BRIDGE);
     s = PCI_HOST_BRIDGE(dev);
     b = pci_bus_new(dev, NULL, pci_address_space,
                     address_space_io, 0, TYPE_PCI_BUS);
@@ -661,7 +665,7 @@ static void i440fx_pcihost_class_init(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo i440fx_pcihost_info = {
-    .name          = "i440FX-pcihost",
+    .name          = TYPE_I440FX_PCI_HOST_BRIDGE,
     .parent        = TYPE_PCI_HOST_BRIDGE,
     .instance_size = sizeof(I440FXState),
     .instance_init = i440fx_pcihost_initfn,