diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 2445db9bbd4f..b9e9fad4a2db 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -929,7 +929,6 @@ static struct dma_map_ops iommu_dma_ops = {
 	.sync_single_for_device = __iommu_sync_single_for_device,
 	.sync_sg_for_cpu = __iommu_sync_sg_for_cpu,
 	.sync_sg_for_device = __iommu_sync_sg_for_device,
-	.dma_supported = iommu_dma_supported,
 	.mapping_error = iommu_dma_mapping_error,
 };
 
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 347a3c17f73a..041c42fb511f 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -514,16 +514,6 @@ void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
 	__iommu_dma_unmap(iommu_get_domain_for_dev(dev), sg_dma_address(sg));
 }
 
-int iommu_dma_supported(struct device *dev, u64 mask)
-{
-	/*
-	 * 'Special' IOMMUs which don't have the same addressing capability
-	 * as the CPU will have to wait until we have some way to query that
-	 * before they'll be able to use this framework.
-	 */
-	return 1;
-}
-
 int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
 	return dma_addr == DMA_ERROR_CODE;
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h
index fc481037478a..f3422440c45f 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -59,7 +59,6 @@ void iommu_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size,
 		enum dma_data_direction dir, struct dma_attrs *attrs);
 void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
 		enum dma_data_direction dir, struct dma_attrs *attrs);
-int iommu_dma_supported(struct device *dev, u64 mask);
 int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
 
 #else