diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
index 7060e13fa421..086a2aeb0404 100644
--- a/arch/ia64/kernel/dma-mapping.c
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -1,5 +1,8 @@
 #include <linux/dma-mapping.h>
 
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
 struct dma_map_ops *dma_ops;
 EXPORT_SYMBOL(dma_ops);
 
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index d21dea44e76f..717ad4f1c708 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -13,9 +13,6 @@
 int swiotlb __read_mostly;
 EXPORT_SYMBOL(swiotlb);
 
-/* Set this to 1 if there is a HW IOMMU in the system */
-int iommu_detected __read_mostly;
-
 struct dma_map_ops swiotlb_dma_ops = {
 	.alloc_coherent = swiotlb_alloc_coherent,
 	.free_coherent = swiotlb_free_coherent,