IofCallDriverSpecifyReturn

NTSTATUS __stdcall IofCallDriverSpecifyReturn(_DEVICE_OBJECT *DeviceObject, _IRP *Irp, PVOID ReturnAddress){
  NTSTATUS result; 

  if( IopDispatchCallDriver )
  {
    if( IopDispatchCallDriver == 3 )
      return IopPerfCallDriver(DeviceObject, Irp, ReturnAddress);
    else
      return IovCallDriver(DeviceObject, Irp, ReturnAddress);
  }
  else
  {
    IopfCallDriver(DeviceObject, Irp);
  }
  return result;
}

Referenced by:

PopRequestPowerIrp
VerifierPoCallDriver