diff --git a/arch/powerpc/include/asm/swiotlb.h b/arch/powerpc/include/asm/swiotlb.h
index f65ecf57b66c..26a0f12b835b 100644
--- a/arch/powerpc/include/asm/swiotlb.h
+++ b/arch/powerpc/include/asm/swiotlb.h
@@ -18,8 +18,6 @@ extern const struct dma_map_ops powerpc_swiotlb_dma_ops;
 extern unsigned int ppc_swiotlb_enable;
 int __init swiotlb_setup_bus_notifier(void);
 
-extern void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev);
-
 #ifdef CONFIG_SWIOTLB
 void swiotlb_detect_4g(void);
 #else
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index 7d5fc9751622..42badc4bf536 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -62,17 +62,6 @@ const struct dma_map_ops powerpc_swiotlb_dma_ops = {
 	.get_required_mask = swiotlb_powerpc_get_required,
 };
 
-void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev)
-{
-	struct pci_controller *hose;
-	struct dev_archdata *sd;
-
-	hose = pci_bus_to_host(pdev->bus);
-	sd = &pdev->dev.archdata;
-	sd->max_direct_dma_addr =
-		hose->dma_window_base_cur + hose->dma_window_size;
-}
-
 static int ppc_swiotlb_bus_notify(struct notifier_block *nb,
 				  unsigned long action, void *data)
 {
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 918be816b097..561f97d698cc 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -114,6 +114,15 @@ static struct pci_ops fsl_indirect_pcie_ops =
 static u64 pci64_dma_offset;
 
 #ifdef CONFIG_SWIOTLB
+static void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev)
+{
+	struct pci_controller *hose = pci_bus_to_host(pdev->bus);
+	struct dev_archdata *sd = &pdev->dev.archdata;
+
+	sd->max_direct_dma_addr =
+		hose->dma_window_base_cur + hose->dma_window_size;
+}
+
 static void setup_swiotlb_ops(struct pci_controller *hose)
 {
 	if (ppc_swiotlb_enable) {