sg_nents_for_dma
desc_cnt = sg_nents_for_dma(sgl, sg_len, MSGDMA_MAX_TRANS_LEN);
frames = sg_nents_for_dma(sgl, sg_len, bcm2835_dma_max_frame_length(c));
num_sgs = sg_nents_for_dma(sgl, sg_len, chan->max_length);
num_sgs = sg_nents_for_dma(sgl, sg_len, axi_block_len);
num = sg_nents_for_dma(sgl, sglen, DMA_MAX_SIZE);
num = sg_nents_for_dma(sgl, sglen, DMA_MAX_SIZE);
nb_desc = sg_nents_for_dma(sgl, sg_len, PDMA_MAX_DESC_BYTES);
num_alloc = sg_nents_for_dma(sgl, sg_len, BAM_FIFO_SIZE);
single_count = sg_nents_for_dma(sgl, sg_len, ADM_MAX_XFER);
j = sg_nents_for_dma(sg, sglen, DMA_MAX_SIZE & ~DMA_ALIGN);
chunks = sg_nents_for_dma(sgl, sg_len, schan->max_xfer_len);
desc_num = sg_nents_for_dma(sgl, sg_len, XDMA_DESC_BLEN_MAX);
int sg_nents_for_dma(struct scatterlist *sgl, unsigned int sglen, size_t len);
EXPORT_SYMBOL(sg_nents_for_dma);