Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / pci-swiotlb_64.c

diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index c4ce0332759ee08413e78e6623b5a023f6404fc7..3c539d111abbacc9d2826ec6bcee5bbda30bfe44 100644 (file)
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -18,9 +18,21 @@ swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
        return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction);
 }
 
+static void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
+                                       dma_addr_t *dma_handle, gfp_t flags)
+{
+       void *vaddr;
+
+       vaddr = dma_generic_alloc_coherent(hwdev, size, dma_handle, flags);
+       if (vaddr)
+               return vaddr;
+
+       return swiotlb_alloc_coherent(hwdev, size, dma_handle, flags);
+}
+
 struct dma_mapping_ops swiotlb_dma_ops = {
        .mapping_error = swiotlb_dma_mapping_error,
-       .alloc_coherent = swiotlb_alloc_coherent,
+       .alloc_coherent = x86_swiotlb_alloc_coherent,
        .free_coherent = swiotlb_free_coherent,
        .map_single = swiotlb_map_single_phys,
        .unmap_single = swiotlb_unmap_single,