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--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -350,7 +350,8 @@ static inline dma_addr_t dma_map_page(st
static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir)
{
- /* nothing to do */
+ if (dir != DMA_TO_DEVICE)
+ dma_cache_maint(dma_to_virt(dev, handle), size, DMA_FROM_DEVICE);
}
#endif /* CONFIG_DMABOUNCE */
@@ -398,6 +399,8 @@ static inline void dma_sync_single_range
{
BUG_ON(!valid_dma_direction(dir));
+ if (dir != DMA_TO_DEVICE)
+ dma_cache_maint(dma_to_virt(dev, handle) + offset, size, DMA_FROM_DEVICE);
dmabounce_sync_for_cpu(dev, handle, offset, size, dir);
}
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