NTSTATUS __stdcall VerifierPoCallDriver(_DEVICE_OBJECT *DeviceObject, _IRP *Irp){
PVOID retaddr;
if( pXdvPoCallDriver )
return pXdvPoCallDriver(DeviceObject, Irp, retaddr, IofCallDriverSpecifyReturn);
else
return IofCallDriverSpecifyReturn(DeviceObject, Irp, retaddr);
}