Merge "iommu: iommu-debug: Fix functional_fast_dma test"

	}

	phys = virt_to_phys(virt);

	/*

	 * A previous test might have made it so that the next IOVA that we

	 * start to search from is not 0, so map the entire IOVA space, and

	 * then unmap it to reset the starting IOVA to search from to address

	 * 0.

	 */

	dma_addr = dma_map_single_attrs(dev, virt, SZ_1G * 4ULL, DMA_TO_DEVICE,

					DMA_ATTR_SKIP_CPU_SYNC);

	if (dma_mapping_error(dev, dma_addr)) {

		dev_err_ratelimited(dev,

				    "Failed to map all of the IOVA space\n");

		ret = -ENOMEM;

		goto out_free_pages;

	}

	dma_unmap_single_attrs(dev, dma_addr, SZ_1G * 4ULL, DMA_TO_DEVICE,

			       DMA_ATTR_SKIP_CPU_SYNC);

	for (iova = 0, i = 0; iova < max; iova += size, ++i) {

		unsigned long expected = iova;

	for (iova = 0; iova < max; iova += size)

		dma_unmap_single(dev, (dma_addr_t)iova, size, DMA_TO_DEVICE);

out_free_pages:

	free_pages((unsigned long)virt, get_order(size));

	return ret;

}