FillIrpCancelRoutine(
  IN  PDEVICE_OBJECT DeviceContext,
  IN  PIRP pIrp
  );

Routine Description:

    This routine handles the cancelling a Receive Irp that has been saved
    during the FILL_IRP state. It must release the
    cancel spin lock before returning re: IoCancelIrp().

Arguments:


Return Value:

    The final status from the operation.