} DeviceCategory;
typedef void (*DeviceRealize)(DeviceState *dev, Error **errp);
-typedef void (*DeviceUnrealize)(DeviceState *dev, Error **errp);
+typedef void (*DeviceUnrealize)(DeviceState *dev);
typedef void (*DeviceReset)(DeviceState *dev);
typedef void (*BusRealize)(BusState *bus, Error **errp);
-typedef void (*BusUnrealize)(BusState *bus, Error **errp);
+typedef void (*BusUnrealize)(BusState *bus);
/**
* DeviceClass: