diff -drupN a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
--- a/include/linux/dma-mapping.h	2018-08-06 17:23:04.000000000 +0300
+++ b/include/linux/dma-mapping.h	2022-06-12 05:28:14.000000000 +0300
@@ -606,6 +606,8 @@ static inline void arch_setup_dma_ops(st
 				      u64 size, const struct iommu_ops *iommu,
 				      bool coherent) { }
 #endif
+extern bool do_iommu_attach(struct device *dev, const struct iommu_ops *ops,
+			   u64 dma_base, u64 size);
 
 #ifndef arch_teardown_dma_ops
 static inline void arch_teardown_dma_ops(struct device *dev) { }