check_magic_byte_presence
if (!check_magic_byte_presence(4, &magic_num_buf[0],
static int check_magic_byte_presence(int byte_cnt, uint8_t *byte_val,
if (!check_magic_byte_presence(sc, 4, &magic_num_buf[0],
static int check_magic_byte_presence(tsalarm_softc_t *sc, int byte_cnt,