diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index a83570f10124..07202beed663 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -174,7 +174,7 @@ static inline void dma_mark_clean(void *addr, size_t size) { }
  * to be the device-viewed address.
  */
 extern void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
-			   gfp_t gfp, struct dma_attrs *attrs);
+			   gfp_t gfp, const struct dma_attrs *attrs);
 
 /**
  * arm_dma_free - free memory allocated by arm_dma_alloc
@@ -191,7 +191,7 @@ extern void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
  * during and after this call executing are illegal.
  */
 extern void arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
-			 dma_addr_t handle, struct dma_attrs *attrs);
+			 dma_addr_t handle, const struct dma_attrs *attrs);
 
 /**
  * arm_dma_mmap - map a coherent DMA allocation into user space
@@ -208,7 +208,7 @@ extern void arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
  */
 extern int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 			void *cpu_addr, dma_addr_t dma_addr, size_t size,
-			struct dma_attrs *attrs);
+			const struct dma_attrs *attrs);
 
 /*
  * This can be called during early boot to increase the size of the atomic
@@ -262,16 +262,16 @@ extern void dmabounce_unregister_dev(struct device *);
  * The scatter list versions of the above methods.
  */
 extern int arm_dma_map_sg(struct device *, struct scatterlist *, int,
-		enum dma_data_direction, struct dma_attrs *attrs);
+		enum dma_data_direction, const struct dma_attrs *attrs);
 extern void arm_dma_unmap_sg(struct device *, struct scatterlist *, int,
-		enum dma_data_direction, struct dma_attrs *attrs);
+		enum dma_data_direction, const struct dma_attrs *attrs);
 extern void arm_dma_sync_sg_for_cpu(struct device *, struct scatterlist *, int,
 		enum dma_data_direction);
 extern void arm_dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
 		enum dma_data_direction);
 extern int arm_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
 		void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		struct dma_attrs *attrs);
+		const struct dma_attrs *attrs);
 
 #endif /* __KERNEL__ */
 #endif
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 4abc50952451..245954e7e343 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -124,7 +124,7 @@ static void __dma_page_dev_to_cpu(struct page *, unsigned long,
  */
 static dma_addr_t arm_dma_map_page(struct device *dev, struct page *page,
 	     unsigned long offset, size_t size, enum dma_data_direction dir,
-	     struct dma_attrs *attrs)
+	     const struct dma_attrs *attrs)
 {
 	if (!dma_get_attr(DMA_ATTR_SKIP_CPU_SYNC, attrs))
 		__dma_page_cpu_to_dev(page, offset, size, dir);
@@ -133,7 +133,7 @@ static dma_addr_t arm_dma_map_page(struct device *dev, struct page *page,
 
 static dma_addr_t arm_coherent_dma_map_page(struct device *dev, struct page *page,
 	     unsigned long offset, size_t size, enum dma_data_direction dir,
-	     struct dma_attrs *attrs)
+	     const struct dma_attrs *attrs)
 {
 	return pfn_to_dma(dev, page_to_pfn(page)) + offset;
 }
@@ -154,7 +154,7 @@ static dma_addr_t arm_coherent_dma_map_page(struct device *dev, struct page *pag
  */
 static void arm_dma_unmap_page(struct device *dev, dma_addr_t handle,
 		size_t size, enum dma_data_direction dir,
-		struct dma_attrs *attrs)
+		const struct dma_attrs *attrs)
 {
 	if (!dma_get_attr(DMA_ATTR_SKIP_CPU_SYNC, attrs))
 		__dma_page_dev_to_cpu(pfn_to_page(dma_to_pfn(dev, handle)),
@@ -194,12 +194,13 @@ struct dma_map_ops arm_dma_ops = {
 EXPORT_SYMBOL(arm_dma_ops);
 
 static void *arm_coherent_dma_alloc(struct device *dev, size_t size,
-	dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs);
+	dma_addr_t *handle, gfp_t gfp, const struct dma_attrs *attrs);
 static void arm_coherent_dma_free(struct device *dev, size_t size, void *cpu_addr,
-				  dma_addr_t handle, struct dma_attrs *attrs);
+				  dma_addr_t handle,
+				  const struct dma_attrs *attrs);
 static int arm_coherent_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 		 void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		 struct dma_attrs *attrs);
+		 const struct dma_attrs *attrs);
 
 struct dma_map_ops arm_coherent_dma_ops = {
 	.alloc			= arm_coherent_dma_alloc,
@@ -814,7 +815,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
  * virtual and bus address for that space.
  */
 void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
-		    gfp_t gfp, struct dma_attrs *attrs)
+		    gfp_t gfp, const struct dma_attrs *attrs)
 {
 	pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL);
 
@@ -823,7 +824,7 @@ void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
 }
 
 static void *arm_coherent_dma_alloc(struct device *dev, size_t size,
-	dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
+	dma_addr_t *handle, gfp_t gfp, const struct dma_attrs *attrs)
 {
 	return __dma_alloc(dev, size, handle, gfp, PAGE_KERNEL, true,
 			   attrs, __builtin_return_address(0));
@@ -831,7 +832,7 @@ static void *arm_coherent_dma_alloc(struct device *dev, size_t size,
 
 static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 		 void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		 struct dma_attrs *attrs)
+		 const struct dma_attrs *attrs)
 {
 	int ret = -ENXIO;
 #ifdef CONFIG_MMU
@@ -859,14 +860,14 @@ static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
  */
 static int arm_coherent_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 		 void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		 struct dma_attrs *attrs)
+		 const struct dma_attrs *attrs)
 {
 	return __arm_dma_mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
 }
 
 int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 		 void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		 struct dma_attrs *attrs)
+		 const struct dma_attrs *attrs)
 {
 #ifdef CONFIG_MMU
 	vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot);
@@ -900,20 +901,20 @@ static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
 }
 
 void arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
-		  dma_addr_t handle, struct dma_attrs *attrs)
+		  dma_addr_t handle, const struct dma_attrs *attrs)
 {
 	__arm_dma_free(dev, size, cpu_addr, handle, attrs, false);
 }
 
 static void arm_coherent_dma_free(struct device *dev, size_t size, void *cpu_addr,
-				  dma_addr_t handle, struct dma_attrs *attrs)
+				  dma_addr_t handle, const struct dma_attrs *attrs)
 {
 	__arm_dma_free(dev, size, cpu_addr, handle, attrs, true);
 }
 
 int arm_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
 		 void *cpu_addr, dma_addr_t handle, size_t size,
-		 struct dma_attrs *attrs)
+		 const struct dma_attrs *attrs)
 {
 	struct page *page = pfn_to_page(dma_to_pfn(dev, handle));
 	int ret;
@@ -1046,7 +1047,7 @@ static void __dma_page_dev_to_cpu(struct page *page, unsigned long off,
  * here.
  */
 int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-		enum dma_data_direction dir, struct dma_attrs *attrs)
+		enum dma_data_direction dir, const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	struct scatterlist *s;
@@ -1080,7 +1081,7 @@ int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
  * rules concerning calls here are the same as for dma_unmap_single().
  */
 void arm_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
-		enum dma_data_direction dir, struct dma_attrs *attrs)
+		enum dma_data_direction dir, const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	struct scatterlist *s;
@@ -1486,7 +1487,7 @@ static void __iommu_free_atomic(struct device *dev, void *cpu_addr,
 }
 
 static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
-	    dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
+	    dma_addr_t *handle, gfp_t gfp, const struct dma_attrs *attrs)
 {
 	pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL);
 	struct page **pages;
@@ -1534,7 +1535,7 @@ err_buffer:
 
 static int arm_iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
 		    void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		    struct dma_attrs *attrs)
+		    const struct dma_attrs *attrs)
 {
 	unsigned long uaddr = vma->vm_start;
 	unsigned long usize = vma->vm_end - vma->vm_start;
@@ -1570,7 +1571,7 @@ static int arm_iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
  * Must not be called with IRQs disabled.
  */
 void arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
-			  dma_addr_t handle, struct dma_attrs *attrs)
+			  dma_addr_t handle, const struct dma_attrs *attrs)
 {
 	struct page **pages;
 	size = PAGE_ALIGN(size);
@@ -1597,7 +1598,7 @@ void arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
 
 static int arm_iommu_get_sgtable(struct device *dev, struct sg_table *sgt,
 				 void *cpu_addr, dma_addr_t dma_addr,
-				 size_t size, struct dma_attrs *attrs)
+				 size_t size, const struct dma_attrs *attrs)
 {
 	unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
 	struct page **pages = __iommu_get_pages(cpu_addr, attrs);
@@ -1736,7 +1737,8 @@ bad_mapping:
  * obtained via sg_dma_{address,length}.
  */
 int arm_coherent_iommu_map_sg(struct device *dev, struct scatterlist *sg,
-		int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
+		int nents, enum dma_data_direction dir,
+		const struct dma_attrs *attrs)
 {
 	return __iommu_map_sg(dev, sg, nents, dir, attrs, true);
 }
@@ -1754,7 +1756,8 @@ int arm_coherent_iommu_map_sg(struct device *dev, struct scatterlist *sg,
  * sg_dma_{address,length}.
  */
 int arm_iommu_map_sg(struct device *dev, struct scatterlist *sg,
-		int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
+		int nents, enum dma_data_direction dir,
+		const struct dma_attrs *attrs)
 {
 	return __iommu_map_sg(dev, sg, nents, dir, attrs, false);
 }
@@ -1788,7 +1791,8 @@ static void __iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
  * rules concerning calls here are the same as for dma_unmap_single().
  */
 void arm_coherent_iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
-		int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
+		int nents, enum dma_data_direction dir,
+		const struct dma_attrs *attrs)
 {
 	__iommu_unmap_sg(dev, sg, nents, dir, attrs, true);
 }
@@ -1804,7 +1808,8 @@ void arm_coherent_iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
  * rules concerning calls here are the same as for dma_unmap_single().
  */
 void arm_iommu_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
-			enum dma_data_direction dir, struct dma_attrs *attrs)
+			enum dma_data_direction dir,
+			const struct dma_attrs *attrs)
 {
 	__iommu_unmap_sg(dev, sg, nents, dir, attrs, false);
 }
@@ -1857,7 +1862,7 @@ void arm_iommu_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
  */
 static dma_addr_t arm_coherent_iommu_map_page(struct device *dev, struct page *page,
 	     unsigned long offset, size_t size, enum dma_data_direction dir,
-	     struct dma_attrs *attrs)
+	     const struct dma_attrs *attrs)
 {
 	struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
 	dma_addr_t dma_addr;
@@ -1891,7 +1896,7 @@ fail:
  */
 static dma_addr_t arm_iommu_map_page(struct device *dev, struct page *page,
 	     unsigned long offset, size_t size, enum dma_data_direction dir,
-	     struct dma_attrs *attrs)
+	     const struct dma_attrs *attrs)
 {
 	if (!dma_get_attr(DMA_ATTR_SKIP_CPU_SYNC, attrs))
 		__dma_page_cpu_to_dev(page, offset, size, dir);
@@ -1910,7 +1915,7 @@ static dma_addr_t arm_iommu_map_page(struct device *dev, struct page *page,
  */
 static void arm_coherent_iommu_unmap_page(struct device *dev, dma_addr_t handle,
 		size_t size, enum dma_data_direction dir,
-		struct dma_attrs *attrs)
+		const struct dma_attrs *attrs)
 {
 	struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
 	dma_addr_t iova = handle & PAGE_MASK;
@@ -1935,7 +1940,7 @@ static void arm_coherent_iommu_unmap_page(struct device *dev, dma_addr_t handle,
  */
 static void arm_iommu_unmap_page(struct device *dev, dma_addr_t handle,
 		size_t size, enum dma_data_direction dir,
-		struct dma_attrs *attrs)
+		const struct dma_attrs *attrs)
 {
 	struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
 	dma_addr_t iova = handle & PAGE_MASK;
diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
index c5f9a9e3d1f3..0af2fbbc25be 100644
--- a/arch/arm/xen/mm.c
+++ b/arch/arm/xen/mm.c
@@ -98,7 +98,7 @@ static void __xen_dma_page_cpu_to_dev(struct device *hwdev, dma_addr_t handle,
 
 void __xen_dma_map_page(struct device *hwdev, struct page *page,
 	     dma_addr_t dev_addr, unsigned long offset, size_t size,
-	     enum dma_data_direction dir, struct dma_attrs *attrs)
+	     enum dma_data_direction dir, const struct dma_attrs *attrs)
 {
 	if (is_device_dma_coherent(hwdev))
 		return;
@@ -110,7 +110,7 @@ void __xen_dma_map_page(struct device *hwdev, struct page *page,
 
 void __xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
 		size_t size, enum dma_data_direction dir,
-		struct dma_attrs *attrs)
+		const struct dma_attrs *attrs)
 
 {
 	if (is_device_dma_coherent(hwdev))
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 0ef620a34c4e..9f6c6b12db30 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -137,7 +137,7 @@ static void __dma_free_coherent(struct device *dev, size_t size,
 
 static void *__dma_alloc(struct device *dev, size_t size,
 			 dma_addr_t *dma_handle, gfp_t flags,
-			 struct dma_attrs *attrs)
+			 const struct dma_attrs *attrs)
 {
 	struct page *page;
 	void *ptr, *coherent_ptr;
@@ -185,7 +185,7 @@ no_mem:
 
 static void __dma_free(struct device *dev, size_t size,
 		       void *vaddr, dma_addr_t dma_handle,
-		       struct dma_attrs *attrs)
+		       const struct dma_attrs *attrs)
 {
 	void *swiotlb_addr = phys_to_virt(dma_to_phys(dev, dma_handle));
 
@@ -202,7 +202,7 @@ static void __dma_free(struct device *dev, size_t size,
 static dma_addr_t __swiotlb_map_page(struct device *dev, struct page *page,
 				     unsigned long offset, size_t size,
 				     enum dma_data_direction dir,
-				     struct dma_attrs *attrs)
+				     const struct dma_attrs *attrs)
 {
 	dma_addr_t dev_addr;
 
@@ -216,7 +216,7 @@ static dma_addr_t __swiotlb_map_page(struct device *dev, struct page *page,
 
 static void __swiotlb_unmap_page(struct device *dev, dma_addr_t dev_addr,
 				 size_t size, enum dma_data_direction dir,
-				 struct dma_attrs *attrs)
+				 const struct dma_attrs *attrs)
 {
 	if (!is_device_dma_coherent(dev))
 		__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
@@ -225,7 +225,7 @@ static void __swiotlb_unmap_page(struct device *dev, dma_addr_t dev_addr,
 
 static int __swiotlb_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
 				  int nelems, enum dma_data_direction dir,
-				  struct dma_attrs *attrs)
+				  const struct dma_attrs *attrs)
 {
 	struct scatterlist *sg;
 	int i, ret;
@@ -242,7 +242,7 @@ static int __swiotlb_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
 static void __swiotlb_unmap_sg_attrs(struct device *dev,
 				     struct scatterlist *sgl, int nelems,
 				     enum dma_data_direction dir,
-				     struct dma_attrs *attrs)
+				     const struct dma_attrs *attrs)
 {
 	struct scatterlist *sg;
 	int i;
@@ -303,7 +303,7 @@ static void __swiotlb_sync_sg_for_device(struct device *dev,
 static int __swiotlb_mmap(struct device *dev,
 			  struct vm_area_struct *vma,
 			  void *cpu_addr, dma_addr_t dma_addr, size_t size,
-			  struct dma_attrs *attrs)
+			  const struct dma_attrs *attrs)
 {
 	int ret = -ENXIO;
 	unsigned long nr_vma_pages = (vma->vm_end - vma->vm_start) >>
@@ -330,7 +330,7 @@ static int __swiotlb_mmap(struct device *dev,
 
 static int __swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt,
 				 void *cpu_addr, dma_addr_t handle, size_t size,
-				 struct dma_attrs *attrs)
+				 const struct dma_attrs *attrs)
 {
 	int ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
 
@@ -425,21 +425,21 @@ out:
 
 static void *__dummy_alloc(struct device *dev, size_t size,
 			   dma_addr_t *dma_handle, gfp_t flags,
-			   struct dma_attrs *attrs)
+			   const struct dma_attrs *attrs)
 {
 	return NULL;
 }
 
 static void __dummy_free(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle,
-			 struct dma_attrs *attrs)
+			 const struct dma_attrs *attrs)
 {
 }
 
 static int __dummy_mmap(struct device *dev,
 			struct vm_area_struct *vma,
 			void *cpu_addr, dma_addr_t dma_addr, size_t size,
-			struct dma_attrs *attrs)
+			const struct dma_attrs *attrs)
 {
 	return -ENXIO;
 }
@@ -447,20 +447,20 @@ static int __dummy_mmap(struct device *dev,
 static dma_addr_t __dummy_map_page(struct device *dev, struct page *page,
 				   unsigned long offset, size_t size,
 				   enum dma_data_direction dir,
-				   struct dma_attrs *attrs)
+				   const struct dma_attrs *attrs)
 {
 	return DMA_ERROR_CODE;
 }
 
 static void __dummy_unmap_page(struct device *dev, dma_addr_t dev_addr,
 			       size_t size, enum dma_data_direction dir,
-			       struct dma_attrs *attrs)
+			       const struct dma_attrs *attrs)
 {
 }
 
 static int __dummy_map_sg(struct device *dev, struct scatterlist *sgl,
 			  int nelems, enum dma_data_direction dir,
-			  struct dma_attrs *attrs)
+			  const struct dma_attrs *attrs)
 {
 	return 0;
 }
@@ -468,7 +468,7 @@ static int __dummy_map_sg(struct device *dev, struct scatterlist *sgl,
 static void __dummy_unmap_sg(struct device *dev,
 			     struct scatterlist *sgl, int nelems,
 			     enum dma_data_direction dir,
-			     struct dma_attrs *attrs)
+			     const struct dma_attrs *attrs)
 {
 }
 
@@ -540,7 +540,7 @@ static void flush_page(struct device *dev, const void *virt, phys_addr_t phys)
 
 static void *__iommu_alloc_attrs(struct device *dev, size_t size,
 				 dma_addr_t *handle, gfp_t gfp,
-				 struct dma_attrs *attrs)
+				 const struct dma_attrs *attrs)
 {
 	bool coherent = is_device_dma_coherent(dev);
 	int ioprot = dma_direction_to_prot(DMA_BIDIRECTIONAL, coherent);
@@ -600,7 +600,8 @@ static void *__iommu_alloc_attrs(struct device *dev, size_t size,
 }
 
 static void __iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
-			       dma_addr_t handle, struct dma_attrs *attrs)
+			       dma_addr_t handle,
+			       const struct dma_attrs *attrs)
 {
 	size_t iosize = size;
 
@@ -633,7 +634,7 @@ static void __iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
 
 static int __iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
 			      void *cpu_addr, dma_addr_t dma_addr, size_t size,
-			      struct dma_attrs *attrs)
+			      const struct dma_attrs *attrs)
 {
 	struct vm_struct *area;
 	int ret;
@@ -653,7 +654,7 @@ static int __iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
 
 static int __iommu_get_sgtable(struct device *dev, struct sg_table *sgt,
 			       void *cpu_addr, dma_addr_t dma_addr,
-			       size_t size, struct dma_attrs *attrs)
+			       size_t size, const struct dma_attrs *attrs)
 {
 	unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
 	struct vm_struct *area = find_vm_area(cpu_addr);
@@ -694,7 +695,7 @@ static void __iommu_sync_single_for_device(struct device *dev,
 static dma_addr_t __iommu_map_page(struct device *dev, struct page *page,
 				   unsigned long offset, size_t size,
 				   enum dma_data_direction dir,
-				   struct dma_attrs *attrs)
+				   const struct dma_attrs *attrs)
 {
 	bool coherent = is_device_dma_coherent(dev);
 	int prot = dma_direction_to_prot(dir, coherent);
@@ -709,7 +710,7 @@ static dma_addr_t __iommu_map_page(struct device *dev, struct page *page,
 
 static void __iommu_unmap_page(struct device *dev, dma_addr_t dev_addr,
 			       size_t size, enum dma_data_direction dir,
-			       struct dma_attrs *attrs)
+			       const struct dma_attrs *attrs)
 {
 	if (!dma_get_attr(DMA_ATTR_SKIP_CPU_SYNC, attrs))
 		__iommu_sync_single_for_cpu(dev, dev_addr, size, dir);
@@ -747,7 +748,7 @@ static void __iommu_sync_sg_for_device(struct device *dev,
 
 static int __iommu_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
 				int nelems, enum dma_data_direction dir,
-				struct dma_attrs *attrs)
+				const struct dma_attrs *attrs)
 {
 	bool coherent = is_device_dma_coherent(dev);
 
@@ -761,7 +762,7 @@ static int __iommu_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
 static void __iommu_unmap_sg_attrs(struct device *dev,
 				   struct scatterlist *sgl, int nelems,
 				   enum dma_data_direction dir,
-				   struct dma_attrs *attrs)
+				   const struct dma_attrs *attrs)
 {
 	if (!dma_get_attr(DMA_ATTR_SKIP_CPU_SYNC, attrs))
 		__iommu_sync_sg_for_cpu(dev, sgl, nelems, dir);
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index ea5a9ebf0f78..69eb1fdce971 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -286,7 +286,7 @@ void iommu_dma_free(struct device *dev, struct page **pages, size_t size,
  *	   or NULL on failure.
  */
 struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
-		struct dma_attrs *attrs, int prot, dma_addr_t *handle,
+		const struct dma_attrs *attrs, int prot, dma_addr_t *handle,
 		void (*flush_page)(struct device *, const void *, phys_addr_t))
 {
 	struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
@@ -400,7 +400,7 @@ dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page,
 }
 
 void iommu_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size,
-		enum dma_data_direction dir, struct dma_attrs *attrs)
+		enum dma_data_direction dir, const struct dma_attrs *attrs)
 {
 	__iommu_dma_unmap(iommu_get_domain_for_dev(dev), handle);
 }
@@ -560,7 +560,7 @@ out_restore_sg:
 }
 
 void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
-		enum dma_data_direction dir, struct dma_attrs *attrs)
+		enum dma_data_direction dir, const struct dma_attrs *attrs)
 {
 	/*
 	 * The scatterlist segments are mapped into a single
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h
index 8443bbb5c071..797b47bc6dae 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -39,7 +39,7 @@ int dma_direction_to_prot(enum dma_data_direction dir, bool coherent);
  * the arch code to take care of attributes and cache maintenance
  */
 struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
-		struct dma_attrs *attrs, int prot, dma_addr_t *handle,
+		const struct dma_attrs *attrs, int prot, dma_addr_t *handle,
 		void (*flush_page)(struct device *, const void *, phys_addr_t));
 void iommu_dma_free(struct device *dev, struct page **pages, size_t size,
 		dma_addr_t *handle);
@@ -56,9 +56,9 @@ int iommu_dma_map_sg(struct device *dev, struct scatterlist *sg,
  * directly as DMA mapping callbacks for simplicity
  */
 void iommu_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size,
-		enum dma_data_direction dir, struct dma_attrs *attrs);
+		enum dma_data_direction dir, const struct dma_attrs *attrs);
 void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
-		enum dma_data_direction dir, struct dma_attrs *attrs);
+		enum dma_data_direction dir, const struct dma_attrs *attrs);
 int iommu_dma_supported(struct device *dev, u64 mask);
 int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
 
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 71c1b215ef66..c8b339436dfa 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -21,34 +21,35 @@
 struct dma_map_ops {
 	void* (*alloc)(struct device *dev, size_t size,
 				dma_addr_t *dma_handle, gfp_t gfp,
-				struct dma_attrs *attrs);
+				const struct dma_attrs *attrs);
 	void (*free)(struct device *dev, size_t size,
 			      void *vaddr, dma_addr_t dma_handle,
-			      struct dma_attrs *attrs);
+			      const struct dma_attrs *attrs);
 	int (*mmap)(struct device *, struct vm_area_struct *,
-			  void *, dma_addr_t, size_t, struct dma_attrs *attrs);
+			  void *, dma_addr_t, size_t,
+			  const struct dma_attrs *attrs);
 
 	int (*get_sgtable)(struct device *dev, struct sg_table *sgt, void *,
-			   dma_addr_t, size_t, struct dma_attrs *attrs);
+			   dma_addr_t, size_t, const struct dma_attrs *attrs);
 
 	dma_addr_t (*map_page)(struct device *dev, struct page *page,
 			       unsigned long offset, size_t size,
 			       enum dma_data_direction dir,
-			       struct dma_attrs *attrs);
+			       const struct dma_attrs *attrs);
 	void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
 			   size_t size, enum dma_data_direction dir,
-			   struct dma_attrs *attrs);
+			   const struct dma_attrs *attrs);
 	/*
 	 * map_sg returns 0 on error and a value > 0 on success.
 	 * It should never return a value < 0.
 	 */
 	int (*map_sg)(struct device *dev, struct scatterlist *sg,
 		      int nents, enum dma_data_direction dir,
-		      struct dma_attrs *attrs);
+		      const struct dma_attrs *attrs);
 	void (*unmap_sg)(struct device *dev,
 			 struct scatterlist *sg, int nents,
 			 enum dma_data_direction dir,
-			 struct dma_attrs *attrs);
+			 const struct dma_attrs *attrs);
 	void (*sync_single_for_cpu)(struct device *dev,
 				    dma_addr_t dma_handle, size_t size,
 				    enum dma_data_direction dir);
@@ -123,7 +124,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
 					      size_t size,
 					      enum dma_data_direction dir,
-					      struct dma_attrs *attrs)
+					      const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	dma_addr_t addr;
@@ -142,7 +143,7 @@ static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
 static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
 					  size_t size,
 					  enum dma_data_direction dir,
-					  struct dma_attrs *attrs)
+					  const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 
@@ -158,7 +159,7 @@ static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
  */
 static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
 				   int nents, enum dma_data_direction dir,
-				   struct dma_attrs *attrs)
+				   const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	int i, ents;
@@ -176,7 +177,7 @@ static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
 
 static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
 				      int nents, enum dma_data_direction dir,
-				      struct dma_attrs *attrs)
+				      const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 
@@ -321,7 +322,7 @@ void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags);
  */
 static inline int
 dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr,
-	       dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
+	       dma_addr_t dma_addr, size_t size, const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	BUG_ON(!ops);
@@ -338,7 +339,8 @@ dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
 
 static inline int
 dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
-		      dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
+		      dma_addr_t dma_addr, size_t size,
+		      const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	BUG_ON(!ops);
@@ -356,7 +358,7 @@ dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
 
 static inline void *dma_alloc_attrs(struct device *dev, size_t size,
 				       dma_addr_t *dma_handle, gfp_t flag,
-				       struct dma_attrs *attrs)
+				       const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 	void *cpu_addr;
@@ -378,7 +380,7 @@ static inline void *dma_alloc_attrs(struct device *dev, size_t size,
 
 static inline void dma_free_attrs(struct device *dev, size_t size,
 				     void *cpu_addr, dma_addr_t dma_handle,
-				     struct dma_attrs *attrs)
+				     const struct dma_attrs *attrs)
 {
 	struct dma_map_ops *ops = get_dma_ops(dev);
 
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 017fced60242..0ff87d75982b 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -68,10 +68,10 @@ swiotlb_free_coherent(struct device *hwdev, size_t size,
 extern dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
 				   unsigned long offset, size_t size,
 				   enum dma_data_direction dir,
-				   struct dma_attrs *attrs);
+				   const struct dma_attrs *attrs);
 extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
 			       size_t size, enum dma_data_direction dir,
-			       struct dma_attrs *attrs);
+			       const struct dma_attrs *attrs);
 
 extern int
 swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
@@ -83,12 +83,13 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
 
 extern int
 swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
-		     enum dma_data_direction dir, struct dma_attrs *attrs);
+		     enum dma_data_direction dir,
+		     const struct dma_attrs *attrs);
 
 extern void
 swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
 		       int nelems, enum dma_data_direction dir,
-		       struct dma_attrs *attrs);
+		       const struct dma_attrs *attrs);
 
 extern void
 swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
diff --git a/lib/dma-noop.c b/lib/dma-noop.c
index 72145646857e..22e44fc26eba 100644
--- a/lib/dma-noop.c
+++ b/lib/dma-noop.c
@@ -10,7 +10,7 @@
 
 static void *dma_noop_alloc(struct device *dev, size_t size,
 			    dma_addr_t *dma_handle, gfp_t gfp,
-			    struct dma_attrs *attrs)
+			    const struct dma_attrs *attrs)
 {
 	void *ret;
 
@@ -22,7 +22,7 @@ static void *dma_noop_alloc(struct device *dev, size_t size,
 
 static void dma_noop_free(struct device *dev, size_t size,
 			  void *cpu_addr, dma_addr_t dma_addr,
-			  struct dma_attrs *attrs)
+			  const struct dma_attrs *attrs)
 {
 	free_pages((unsigned long)cpu_addr, get_order(size));
 }
@@ -30,13 +30,14 @@ static void dma_noop_free(struct device *dev, size_t size,
 static dma_addr_t dma_noop_map_page(struct device *dev, struct page *page,
 				      unsigned long offset, size_t size,
 				      enum dma_data_direction dir,
-				      struct dma_attrs *attrs)
+				      const struct dma_attrs *attrs)
 {
 	return page_to_phys(page) + offset;
 }
 
 static int dma_noop_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
-			     enum dma_data_direction dir, struct dma_attrs *attrs)
+			     enum dma_data_direction dir,
+			     const struct dma_attrs *attrs)
 {
 	int i;
 	struct scatterlist *sg;
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 76f29ecba8f4..f881405d0b17 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -738,7 +738,7 @@ swiotlb_full(struct device *dev, size_t size, enum dma_data_direction dir,
 dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
 			    unsigned long offset, size_t size,
 			    enum dma_data_direction dir,
-			    struct dma_attrs *attrs)
+			    const struct dma_attrs *attrs)
 {
 	phys_addr_t map, phys = page_to_phys(page) + offset;
 	dma_addr_t dev_addr = phys_to_dma(dev, phys);
@@ -807,7 +807,7 @@ static void unmap_single(struct device *hwdev, dma_addr_t dev_addr,
 
 void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
 			size_t size, enum dma_data_direction dir,
-			struct dma_attrs *attrs)
+			const struct dma_attrs *attrs)
 {
 	unmap_single(hwdev, dev_addr, size, dir);
 }
@@ -877,7 +877,7 @@ EXPORT_SYMBOL(swiotlb_sync_single_for_device);
  */
 int
 swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
-		     enum dma_data_direction dir, struct dma_attrs *attrs)
+		     enum dma_data_direction dir, const struct dma_attrs *attrs)
 {
 	struct scatterlist *sg;
 	int i;
@@ -924,7 +924,8 @@ EXPORT_SYMBOL(swiotlb_map_sg);
  */
 void
 swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
-		       int nelems, enum dma_data_direction dir, struct dma_attrs *attrs)
+		       int nelems, enum dma_data_direction dir,
+		       const struct dma_attrs *attrs)
 {
 	struct scatterlist *sg;
 	int i;
