diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index cf0a0315d586a15bc17dcd2de072956a00dc0d2e..88be97c96987ad17edc63673b1134ffa4864b896 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -187,7 +187,7 @@ static void flush_gart(struct device *dev)
 
 /* Allocate DMA memory on node near device */
 noinline
-static void *dma_alloc_pages(struct device *dev, unsigned gfp, unsigned order)
+static void *dma_alloc_pages(struct device *dev, gfp_t gfp, unsigned order)
 {
 	struct page *page;
 	int node;
@@ -204,7 +204,7 @@ static void *dma_alloc_pages(struct device *dev, unsigned gfp, unsigned order)
  */
 void *
 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
-		   unsigned gfp)
+		   gfp_t gfp)
 {
 	void *memory;
 	unsigned long dma_mask = 0;
diff --git a/arch/x86_64/kernel/pci-nommu.c b/arch/x86_64/kernel/pci-nommu.c
index 67d90b89af0b0836a2c83364c4ecd9c72caa2710..5a981dca87ffb1c6f9abb2bec204d35b7f6903e2 100644
--- a/arch/x86_64/kernel/pci-nommu.c
+++ b/arch/x86_64/kernel/pci-nommu.c
@@ -24,7 +24,7 @@ EXPORT_SYMBOL(iommu_sac_force);
  */
 
 void *dma_alloc_coherent(struct device *hwdev, size_t size,
-			 dma_addr_t *dma_handle, unsigned gfp)
+			 dma_addr_t *dma_handle, gfp_t gfp)
 {
 	void *ret;
 	u64 mask;
diff --git a/include/asm-x86_64/dma-mapping.h b/include/asm-x86_64/dma-mapping.h
index e784fdc524f1ac7be2dce7930995cccab58dc0f6..54a380efed413fda6d8c0bf155d4f2ace1a6753c 100644
--- a/include/asm-x86_64/dma-mapping.h
+++ b/include/asm-x86_64/dma-mapping.h
@@ -17,7 +17,7 @@ extern dma_addr_t bad_dma_address;
 	(swiotlb ? swiotlb_dma_mapping_error(x) : ((x) == bad_dma_address))
 
 void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
-			 unsigned gfp);
+			 gfp_t gfp);
 void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 			 dma_addr_t dma_handle);