diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 5a8c308e2b5c..4b4a0c0b0ccd 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -8,7 +8,6 @@
 #define DMA_ERROR_CODE	(~(dma_addr_t)0x0)
 
 extern int dma_supported(struct device *dev, u64 mask);
-extern int dma_set_mask(struct device *dev, u64 dma_mask);
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
@@ -62,4 +61,17 @@ static inline int dma_get_cache_alignment(void)
 	return (1 << INTERNODE_CACHE_SHIFT);
 }
 
+static inline int dma_set_mask(struct device *dev, u64 mask)
+{
+#ifdef CONFIG_PCI
+	if (dev->bus == &pci_bus_type) {
+		if (!dev->dma_mask || !dma_supported(dev, mask))
+			return -EINVAL;
+		*dev->dma_mask = mask;
+		return 0;
+	}
+#endif
+	return -EINVAL;
+}
+
 #endif
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
index 5fad94950e76..8414549c1834 100644
--- a/arch/sparc/kernel/iommu.c
+++ b/arch/sparc/kernel/iommu.c
@@ -862,13 +862,3 @@ int dma_supported(struct device *dev, u64 device_mask)
 	return 0;
 }
 EXPORT_SYMBOL(dma_supported);
-
-int dma_set_mask(struct device *dev, u64 dma_mask)
-{
-#ifdef CONFIG_PCI
-	if (dev->bus == &pci_bus_type)
-		return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
-#endif
-	return -EINVAL;
-}
-EXPORT_SYMBOL(dma_set_mask);
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 3c8c44f6a41c..84e5386714cd 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -676,17 +676,6 @@ int dma_supported(struct device *dev, u64 mask)
 }
 EXPORT_SYMBOL(dma_supported);
 
-int dma_set_mask(struct device *dev, u64 dma_mask)
-{
-#ifdef CONFIG_PCI
-	if (dev->bus == &pci_bus_type)
-		return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
-#endif
-	return -EOPNOTSUPP;
-}
-EXPORT_SYMBOL(dma_set_mask);
-
-
 #ifdef CONFIG_PROC_FS
 
 static int sparc_io_proc_show(struct seq_file *m, void *v)