target/linux/cns3xxx/patches-2.6.31/300-flush_cache_on_dma_cache_sync_for_cpu.patch

   1 --- a/arch/arm/include/asm/dma-mapping.h
   2 +++ b/arch/arm/include/asm/dma-mapping.h
   3 @@ -350,7 +350,8 @@ static inline dma_addr_t dma_map_page(st
   4  static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
   5                 size_t size, enum dma_data_direction dir)
   6  {
   7 -       /* nothing to do */
   8 +       if (dir != DMA_TO_DEVICE)
   9 +               dma_cache_maint(dma_to_virt(dev, handle), size, DMA_FROM_DEVICE);
  10  }
  11  #endif /* CONFIG_DMABOUNCE */
  12
  13 @@ -398,6 +399,8 @@ static inline void dma_sync_single_range
  14  {
  15         BUG_ON(!valid_dma_direction(dir));
  16
  17 +       if (dir != DMA_TO_DEVICE)
  18 +               dma_cache_maint(dma_to_virt(dev, handle) + offset, size, DMA_FROM_DEVICE);
  19         dmabounce_sync_for_cpu(dev, handle, offset, size, dir);
  20  }
  21