diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 63060cc997e1..f5084a5209d5 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -362,7 +362,7 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
  *
  * Return: corresponding IOMMU API page protection flags
  */
-static int dma_info_to_prot(enum dma_data_direction dir, bool coherent,
+int dma_info_to_prot(enum dma_data_direction dir, bool coherent,
 		     unsigned long attrs)
 {
 	int prot = coherent ? IOMMU_CACHE : 0;
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h
index b2e790a9f05c..5cfc5af6233c 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -20,6 +20,8 @@ int iommu_get_dma_cookie(struct iommu_domain *domain);
 int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base);
 void iommu_put_dma_cookie(struct iommu_domain *domain);
 
+int dma_info_to_prot(enum dma_data_direction dir, bool coherent,
+		     unsigned long attrs);
 size_t iommu_dma_prepare_map_sg(struct device *dev, struct iova_domain *iovad,
 				struct scatterlist *sg, int nents);
 int iommu_dma_finalise_sg(struct device *dev, struct scatterlist *sg,