PDMA_MAX_DESC_BYTES
copy = min_t(size_t, len, PDMA_MAX_DESC_BYTES);
len = min_t(size_t, avail, PDMA_MAX_DESC_BYTES);
if (period_len > PDMA_MAX_DESC_BYTES)
if (len % period_len != 0 || period_len > PDMA_MAX_DESC_BYTES ||
nb_desc = DIV_ROUND_UP(period_len, PDMA_MAX_DESC_BYTES);
nb_desc = DIV_ROUND_UP(len, PDMA_MAX_DESC_BYTES);
copy = min_t(size_t, len, PDMA_MAX_DESC_BYTES);
nb_desc = sg_nents_for_dma(sgl, sg_len, PDMA_MAX_DESC_BYTES);
len = min_t(size_t, avail, PDMA_MAX_DESC_BYTES);