1 files changed, 9 insertions, 50 deletions

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 353972c1946c..cd99433b8ba1 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -58,17 +58,6 @@ EXPORT_SYMBOL(x86_dma_fallback_dev);
 /* Number of entries preallocated for DMA-API debugging */
 #define PREALLOC_DMA_DEBUG_ENTRIES       65536
 
-int dma_set_mask(struct device *dev, u64 mask)
-{
-	if (!dev->dma_mask || !dma_supported(dev, mask))
-		return -EIO;
-
-	*dev->dma_mask = mask;
-
-	return 0;
-}
-EXPORT_SYMBOL(dma_set_mask);
-
 void __init pci_iommu_alloc(void)
 {
 	struct iommu_table_entry *p;
@@ -140,50 +129,20 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
 		free_pages((unsigned long)vaddr, get_order(size));
 }
 
-void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
-		      gfp_t gfp, struct dma_attrs *attrs)
-{
-	struct dma_map_ops *ops = get_dma_ops(dev);
-	void *memory;
-
-	gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
-
-	if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
-		return memory;
-
-	if (!dev)
-		dev = &x86_dma_fallback_dev;
-
-	if (!is_device_dma_capable(dev))
-		return NULL;
-
-	if (!ops->alloc)
-		return NULL;
-
-	memory = ops->alloc(dev, size, dma_handle,
-			    dma_alloc_coherent_gfp_flags(dev, gfp), attrs);
-	debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
-
-	return memory;
-}
-EXPORT_SYMBOL(dma_alloc_attrs);
-
-void dma_free_attrs(struct device *dev, size_t size,
-		    void *vaddr, dma_addr_t bus,
-		    struct dma_attrs *attrs)
+bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp)
 {
-	struct dma_map_ops *ops = get_dma_ops(dev);
+	if (!*dev)
+		*dev = &x86_dma_fallback_dev;
 
-	WARN_ON(irqs_disabled());       /* for portability */
+	*gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
+	*gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
 
-	if (dma_release_from_coherent(dev, get_order(size), vaddr))
-		return;
+	if (!is_device_dma_capable(*dev))
+		return false;
+	return true;
 
-	debug_dma_free_coherent(dev, size, vaddr, bus);
-	if (ops->free)
-		ops->free(dev, size, vaddr, bus, attrs);
 }
-EXPORT_SYMBOL(dma_free_attrs);
+EXPORT_SYMBOL(arch_dma_alloc_attrs);
 
 /*
  * See <Documentation/x86/x86_64/boot-options.txt> for the iommu kernel