diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 76f29ec..22e13a0 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -738,7 +738,7 @@
 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)
+			    unsigned long 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 @@
 
 void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
 			size_t size, enum dma_data_direction dir,
-			struct dma_attrs *attrs)
+			unsigned long attrs)
 {
 	unmap_single(hwdev, dev_addr, size, dir);
 }
@@ -877,7 +877,7 @@
  */
 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, unsigned long attrs)
 {
 	struct scatterlist *sg;
 	int i;
@@ -914,7 +914,7 @@
 swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
 	       enum dma_data_direction dir)
 {
-	return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
+	return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, 0);
 }
 EXPORT_SYMBOL(swiotlb_map_sg);
 
@@ -924,7 +924,8 @@
  */
 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,
+		       unsigned long attrs)
 {
 	struct scatterlist *sg;
 	int i;
@@ -941,7 +942,7 @@
 swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
 		 enum dma_data_direction dir)
 {
-	return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
+	return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, 0);
 }
 EXPORT_SYMBOL(swiotlb_unmap_sg);