FLAGS_FINAL
if (test_bit(FLAGS_FINAL, &dd->flags))
dd->flags &= ~(BIT(FLAGS_FINAL) | BIT(FLAGS_CPU) |
if (unlikely(test_bit(FLAGS_FINAL, &dd->flags)))
set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */
set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */