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use sg helper function in DMA mapping documentation
Signed-off-by: Saeed Bishara <saeed.bishara@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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@ -514,7 +514,7 @@ With scatterlists, you map a region gathered from several regions by:
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int i, count = pci_map_sg(dev, sglist, nents, direction);
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struct scatterlist *sg;
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for (i = 0, sg = sglist; i < count; i++, sg++) {
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for_each_sg(sglist, sg, count, i) {
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hw_address[i] = sg_dma_address(sg);
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hw_len[i] = sg_dma_len(sg);
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}
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