--- zzzz-none-000/linux-4.4.60/include/linux/dma-mapping.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/include/linux/dma-mapping.h	2021-02-04 17:41:59.000000000 +0000
@@ -136,7 +136,7 @@
 
 #ifndef arch_setup_dma_ops
 static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
-				      u64 size, struct iommu_ops *iommu,
+				      u64 size, const struct iommu_ops *iommu,
 				      bool coherent) { }
 #endif