diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c
index 582a3519fb28..9903e3a79102 100644
--- a/arch/alpha/kernel/pci-noop.c
+++ b/arch/alpha/kernel/pci-noop.c
@@ -154,7 +154,7 @@ pci_dma_supported(struct pci_dev *hwdev, dma_addr_t mask)
 
 void *
 dma_alloc_coherent(struct device *dev, size_t size,
-		   dma_addr_t *dma_handle, int gfp)
+		   dma_addr_t *dma_handle, gfp_t gfp)
 {
 	void *ret;
 
diff --git a/include/asm-alpha/dma-mapping.h b/include/asm-alpha/dma-mapping.h
index c675f282d6ad..680f7ecbb28f 100644
--- a/include/asm-alpha/dma-mapping.h
+++ b/include/asm-alpha/dma-mapping.h
@@ -31,7 +31,7 @@
 #else	/* no PCI - no IOMMU. */
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-			 dma_addr_t *dma_handle, int gfp);
+			 dma_addr_t *dma_handle, gfp_t gfp);
 int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 	       enum dma_data_direction direction);