dma_unmap_page
dma_unmap_page(dev, addr[i], PAGE_SIZE, dir);
dma_unmap_page(dev, dma_addr[i], PAGE_SIZE, dir);
dma_unmap_page(dev,
dma_unmap_page(dev, pagemap_addr[i].addr, PAGE_SIZE << pagemap_addr[i].order, dir);
dma_unmap_page(dev, daddr, 4096, DMA_BIDIRECTIONAL);
dma_unmap_page(dev, daddr, 4096, DMA_BIDIRECTIONAL);
dma_unmap_page(dev, daddr, 4096, DMA_BIDIRECTIONAL);
dma_unmap_page(kdev, spt->shadow_page.mfn << I915_GTT_PAGE_SHIFT, 4096,
dma_unmap_page(kdev, daddr, PAGE_SIZE, DMA_BIDIRECTIONAL);
dma_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL);
dma_unmap_page(pool->dev, dma_addr, (long)num_pages << PAGE_SHIFT,