static void __swiotlb_sync_sg_for_device(struct device *dev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir) { struct scatterlist *sg; int i; swiotlb_sync_sg_for_device(dev, sgl, nelems, dir);
if (!is_device_dma_coherent(dev)) for_each_sg(sgl, sg, nelems, i) __dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)), sg->length, dir);
}