Merge "dma-mapping: Check for valid IOVA address" (0c89179c) · Commits · e / devices / android_kernel_xiaomi_markw

arch/arm/mm/dma-mapping.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1697,6 +1697,12 @@ int arm_iommu_map_sg(struct device dev, struct scatterlist sg,
		total_length += s->length;

		iova = __alloc_iova(mapping, total_length);

		if (iova == DMA_ERROR_CODE) {
		dev_err(dev, "Couldn't allocate iova for sg %p\n", sg);
		return 0;
		}

		ret = iommu_map_sg(mapping->domain, iova, sg, nents, prot);
		if (ret != total_length) {
		__free_iova(mapping, iova, total_length);