midi_attach_mi
midi_attach_mi(&mpu_midi_hw_if, sc, sc->sc_dev);
midi_attach_mi(&midisyn_hw_if, &sc->syn, sc->dev);
midi_attach_mi(&midisyn_hw_if, ms, self);
midi_attach_mi(&sb_midi_hw_if, sc, sc->sc_dev);
midi_attach_mi(&mpu_midi_hw_if, &sc->sc_mpu, self);
device_t midi_attach_mi(const struct midi_hw_if *, void *, device_t);
midi_attach_mi(&autri_midi_hw_if, sc, sc->sc_dev);
midi_attach_mi(&cs4280_midi_hw_if, sc, sc->sc_dev);
midi_attach_mi(&cs4281_midi_hw_if, sc, sc->sc_dev);
sc->sc_mididev = midi_attach_mi(&eap_midi_hw_if, sc, sc->sc_dev);
mididev->mdev = midi_attach_mi(&umidi_hw_if, mididev, sc->sc_dev);