HIFMC_DMA_MAX_LEN
for (offset = 0; offset < len; offset += HIFMC_DMA_MAX_LEN) {
size_t trans = min_t(size_t, HIFMC_DMA_MAX_LEN, len - offset);
for (offset = 0; offset < len; offset += HIFMC_DMA_MAX_LEN) {
size_t trans = min_t(size_t, HIFMC_DMA_MAX_LEN, len - offset);
host->buffer = dmam_alloc_coherent(dev, HIFMC_DMA_MAX_LEN,
#define HIFMC_DMA_MASK (HIFMC_DMA_MAX_LEN - 1)