OCTEON_SPI_MAX_BYTES
while (len > OCTEON_SPI_MAX_BYTES) {
for (i = 0; i < OCTEON_SPI_MAX_BYTES; i++) {
mpi_tx.s.txnum = tx_buf ? OCTEON_SPI_MAX_BYTES : 0;
mpi_tx.s.totnum = OCTEON_SPI_MAX_BYTES;
for (i = 0; i < OCTEON_SPI_MAX_BYTES; i++) {
len -= OCTEON_SPI_MAX_BYTES;