cadence_gem: QOMify Cadence GEM

The sysbus_init_irq() call will eventually depend on a property so it needs to
be in the realize function.
Signed-off-by: NAlistair Francis <alistair.francis@xilinx.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 486595809cf416d18a750aafbcfa1c81d7160c59.1469727764.git.alistair.francis@xilinx.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/net/cadence_gem.c

@@ -1214,24 +1214,30 @@ static NetClientInfo net_gem_info = {
     .link_status_changed = gem_set_link,
 };
 
-static int gem_init(SysBusDevice *sbd)
+static void gem_realize(DeviceState *dev, Error **errp)
 {
-    DeviceState *dev = DEVICE(sbd);
     CadenceGEMState *s = CADENCE_GEM(dev);
 
+    sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq);
+
+    qemu_macaddr_default_if_unset(&s->conf.macaddr);
+
+    s->nic = qemu_new_nic(&net_gem_info, &s->conf,
+                          object_get_typename(OBJECT(dev)), dev->id, s);
+}
+
+static void gem_init(Object *obj)
+{
+    CadenceGEMState *s = CADENCE_GEM(obj);
+    DeviceState *dev = DEVICE(obj);
+
     DB_PRINT("\n");
 
     gem_init_register_masks(s);
     memory_region_init_io(&s->iomem, OBJECT(s), &gem_ops, s,
                           "enet", sizeof(s->regs));
-    sysbus_init_mmio(sbd, &s->iomem);
-    sysbus_init_irq(sbd, &s->irq);
-    qemu_macaddr_default_if_unset(&s->conf.macaddr);
-
-    s->nic = qemu_new_nic(&net_gem_info, &s->conf,
-            object_get_typename(OBJECT(dev)), dev->id, s);
 
-    return 0;
+    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);
 }
 
 static const VMStateDescription vmstate_cadence_gem = {
@@ -1257,9 +1263,8 @@ static Property gem_properties[] = {
 static void gem_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 
-    sdc->init = gem_init;
+    dc->realize = gem_realize;
     dc->props = gem_properties;
     dc->vmsd = &vmstate_cadence_gem;
     dc->reset = gem_reset;
@@ -1269,6 +1274,7 @@ static const TypeInfo gem_info = {
     .name  = TYPE_CADENCE_GEM,
     .parent = TYPE_SYS_BUS_DEVICE,
     .instance_size  = sizeof(CadenceGEMState),
+    .instance_init = gem_init,
     .class_init = gem_class_init,
 };