unsigned remain_len = t->len - tsd->cur_pos;
unsigned max_word;
- tsd->bytes_per_word = (t->bits_per_word - 1) / 8 + 1;
+ tsd->bytes_per_word = DIV_ROUND_UP(t->bits_per_word, 8);
max_word = remain_len / tsd->bytes_per_word;
if (max_word > SPI_FIFO_DEPTH)
max_word = SPI_FIFO_DEPTH;