sbt_read_packet    70 dev/sdmmc/sbt.c int	sbt_read_packet(struct sbt_softc *, u_char *, size_t *);
sbt_read_packet   323 dev/sdmmc/sbt.c 	if (sbt_read_packet(sc, sc->sc_buf, &len) != 0 || len == 0) {