DMA_MAX_SIZE
num = DIV_ROUND_UP(len, DMA_MAX_SIZE);
copy = min_t(size_t, len, DMA_MAX_SIZE);
num = sg_nents_for_dma(sgl, sglen, DMA_MAX_SIZE);
len = min_t(size_t, avail, DMA_MAX_SIZE);
num = sg_nents_for_dma(sgl, sglen, DMA_MAX_SIZE);
len = min_t(size_t, avail, DMA_MAX_SIZE);
j = sg_nents_for_dma(sg, sglen, DMA_MAX_SIZE & ~DMA_ALIGN);
if (tlen > DMA_MAX_SIZE) {
DMA_MAX_SIZE & ~DMA_ALIGN);
sgperiod = DIV_ROUND_UP(period, DMA_MAX_SIZE & ~DMA_ALIGN);
if (tlen > DMA_MAX_SIZE) {
unsigned mult = DIV_ROUND_UP(tlen, DMA_MAX_SIZE & ~DMA_ALIGN);
return min(transfersize, DMA_MAX_SIZE);