1 files changed, 23 insertions, 6 deletions

diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index 71d412a09f30..a3933d4330cd 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -14,7 +14,7 @@
 static int
 check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size)
 {
-        if (hwdev && !is_buffer_dma_capable(*hwdev->dma_mask, bus, size)) {
+        if (hwdev && !dma_capable(hwdev, bus, size)) {
                 if (*hwdev->dma_mask >= DMA_BIT_MASK(32))
                         printk(KERN_ERR
                             "nommu_%s: overflow %Lx+%zu of device mask %Lx\n",
@@ -79,12 +79,29 @@ static void nommu_free_coherent(struct device *dev, size_t size, void *vaddr,
         free_pages((unsigned long)vaddr, get_order(size));
 }
 
+static void nommu_sync_single_for_device(struct device *dev,
+                        dma_addr_t addr, size_t size,
+                        enum dma_data_direction dir)
+{
+        flush_write_buffers();
+}
+
+
+static void nommu_sync_sg_for_device(struct device *dev,
+                        struct scatterlist *sg, int nelems,
+                        enum dma_data_direction dir)
+{
+        flush_write_buffers();
+}
+
 struct dma_map_ops nommu_dma_ops = {
-        .alloc_coherent = dma_generic_alloc_coherent,
-        .free_coherent  = nommu_free_coherent,
-        .map_sg         = nommu_map_sg,
-        .map_page       = nommu_map_page,
-        .is_phys        = 1,
+        .alloc_coherent         = dma_generic_alloc_coherent,
+        .free_coherent          = nommu_free_coherent,
+        .map_sg                 = nommu_map_sg,
+        .map_page               = nommu_map_page,
+        .sync_single_for_device = nommu_sync_single_for_device,
+        .sync_sg_for_device     = nommu_sync_sg_for_device,
+        .is_phys                = 1,
 };
 
 void __init no_iommu_init(void)