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@@ -25,15 +25,9 @@ struct dma_ops {
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void (*sync_single_for_cpu)(struct device *dev,
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dma_addr_t dma_handle, size_t size,
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enum dma_data_direction direction);
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- void (*sync_single_for_device)(struct device *dev,
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- dma_addr_t dma_handle, size_t size,
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- enum dma_data_direction direction);
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void (*sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg,
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int nelems,
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enum dma_data_direction direction);
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- void (*sync_sg_for_device)(struct device *dev, struct scatterlist *sg,
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- int nelems,
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- enum dma_data_direction direction);
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};
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extern const struct dma_ops *dma_ops;
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@@ -105,7 +99,7 @@ static inline void dma_sync_single_for_device(struct device *dev,
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size_t size,
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enum dma_data_direction direction)
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{
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- dma_ops->sync_single_for_device(dev, dma_handle, size, direction);
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+ /* No flushing needed to sync cpu writes to the device. */
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}
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static inline void dma_sync_single_range_for_cpu(struct device *dev,
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@@ -123,7 +117,7 @@ static inline void dma_sync_single_range_for_device(struct device *dev,
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size_t size,
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enum dma_data_direction direction)
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{
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- dma_sync_single_for_device(dev, dma_handle+offset, size, direction);
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+ /* No flushing needed to sync cpu writes to the device. */
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}
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@@ -138,7 +132,7 @@ static inline void dma_sync_sg_for_device(struct device *dev,
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struct scatterlist *sg, int nelems,
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enum dma_data_direction direction)
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{
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- dma_ops->sync_sg_for_device(dev, sg, nelems, direction);
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+ /* No flushing needed to sync cpu writes to the device. */
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}
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static inline int dma_mapping_error(dma_addr_t dma_addr)
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