ADIS16550_BURST_N_ELEM
u32 crc_buf[ADIS16550_BURST_N_ELEM - 2];
u32 crc = be32_to_cpu(buffer[ADIS16550_BURST_N_ELEM - 1]);
#define ADIS16550_BURST_DATA_LEN (ADIS16550_BURST_N_ELEM * 4)
valid = adis16550_validate_crc(buffer, ADIS16550_BURST_N_ELEM - 2);