--- zzzz-none-000/linux-4.4.60/arch/arm64/include/asm/dma-mapping.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/arch/arm64/include/asm/dma-mapping.h	2021-02-04 17:41:59.000000000 +0000
@@ -48,7 +48,7 @@
 }
 
 void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
-			struct iommu_ops *iommu, bool coherent);
+			const struct iommu_ops *iommu, bool coherent);
 #define arch_setup_dma_ops	arch_setup_dma_ops
 
 #ifdef CONFIG_IOMMU_DMA