Merge "arm: dma-mapping: add iova size alignment check" (d44796d6) · Commits · e / devices / android_kernel_sony_msm8998

arch/arm/mm/dma-mapping.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2169,6 +2169,9 @@ arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, u64 size)
		if (!bitmap_size)
		return ERR_PTR(-EINVAL);

		WARN(!IS_ALIGNED(size, SZ_128M),
		"size is not aligned to 128M, alignment enforced");

		if (bitmap_size > PAGE_SIZE) {
		extensions = bitmap_size / PAGE_SIZE;
		bitmap_size = PAGE_SIZE;