mps_diag_action_t
static int mps_user_diag_action(struct mps_softc *sc, mps_diag_action_t *data);
mps_user_diag_action(struct mps_softc *sc, mps_diag_action_t *data)
error = mps_user_diag_action(sc, (mps_diag_action_t *)arg);