diff --cc hw/intc/openpic.c
index b9e025f,d324b1e..0000000
--- a/hw/intc/openpic.c
+++ b/hw/intc/openpic.c
@@@ -1527,17 -1526,9 +1527,17 @@@ static void map_list(OpenPICState *opp
      }
  }
  
 -static int openpic_init(SysBusDevice *dev)
 +static void openpic_init(Object *obj)
  {
 -    OpenPICState *opp = FROM_SYSBUS(typeof (*opp), dev);
 +    OpenPICState *opp = OPENPIC(obj);
 +
-     memory_region_init(&opp->mem, NULL, "openpic", 0x40000);
++    memory_region_init(&opp->mem, obj, "openpic", 0x40000);
 +}
 +
 +static void openpic_realize(DeviceState *dev, Error **errp)
 +{
 +    SysBusDevice *d = SYS_BUS_DEVICE(dev);
 +    OpenPICState *opp = OPENPIC(dev);
      int i, j;
      int list_count = 0;
      static const MemReg list_le[] = {
diff --git a/hw/intc/openpic_kvm.c b/hw/intc/openpic_kvm.c
index 6775879..2f73193 100644
--- a/hw/intc/openpic_kvm.c
+++ b/hw/intc/openpic_kvm.c
@@ -155,7 +155,7 @@ static void kvm_openpic_init(Object *obj)
 {
     KVMOpenPICState *opp = KVM_OPENPIC(obj);
 
-    memory_region_init_io(&opp->mem, &kvm_openpic_mem_ops, opp,
+    memory_region_init_io(&opp->mem, obj, &kvm_openpic_mem_ops, opp,
                           "kvm-openpic", 0x40000);
 }