x86: dma-ops on highmem fix

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index 82a0a674a003..490da7f4b8d0 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -11,11 +11,18 @@
 
 int swiotlb __read_mostly;
 
+static dma_addr_t
+swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
+                        int direction)
+{
+        return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction);
+}
+
 const struct dma_mapping_ops swiotlb_dma_ops = {
         .mapping_error = swiotlb_dma_mapping_error,
         .alloc_coherent = swiotlb_alloc_coherent,
         .free_coherent = swiotlb_free_coherent,
-        .map_single = swiotlb_map_single,
+        .map_single = swiotlb_map_single_phys,
         .unmap_single = swiotlb_unmap_single,
         .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
         .sync_single_for_device = swiotlb_sync_single_for_device,