SPI_IOC_RD_BITS_PER_WORD
case SPI_IOC_RD_BITS_PER_WORD:
if (ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits) < 0) {
ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits);