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Commit d81ff97a authored by Abhimanyu Kapur's avatar Abhimanyu Kapur
Browse files

iommu: msm: surround the msm_dma_iommu apis with iommu ifdef 



Make all msm_dma_iommu apis depend on CONFIG_IOMMU_API as it is
only used when we have the linux iommu layer available.

Change-Id: I879dc1a9174d498b9b4bc68b2418165f3b2675a3
Signed-off-by: default avatarAbhimanyu Kapur <abhimany@codeaurora.org>
parent 2bebc639

include/linux/msm_dma_iommu_mapping.h

+36 −1
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ enum msm_dma_map_attr { 
	MSM_DMA_ATTR_NO_DELAYED_UNMAP = 0x1,

};



#ifdef CONFIG_IOMMU_API

/*

* This function is not taking a reference to the dma_buf here. It is expected

* that clients hold reference to the dma_buf until they are done with mapping
@@ -55,7 +56,41 @@ void msm_dma_unmap_sg(struct device *dev, struct scatterlist *sgl, int nents, 
 * Below is private function only to be called by framework (ION) and not by

 * clients.

 */



void msm_dma_buf_freed(void *buffer);



#else /*CONFIG_IOMMU_API*/



static inline int msm_dma_map_sg_attrs(struct device *dev,

			struct scatterlist *sg, int nents,

			enum dma_data_direction dir, struct dma_buf *dma_buf,

			int flags)

{

	return -EINVAL;

}



static inline int msm_dma_map_sg_lazy(struct device *dev,

			       struct scatterlist *sg, int nents,

			       enum dma_data_direction dir,

			       struct dma_buf *dma_buf)

{

	return -EINVAL;

}



static inline int msm_dma_map_sg(struct device *dev, struct scatterlist *sg,

				  int nents, enum dma_data_direction dir,

				  struct dma_buf *dma_buf)

{

	return -EINVAL;

}



static inline void msm_dma_unmap_sg(struct device *dev,

					struct scatterlist *sgl, int nents,

					enum dma_data_direction dir,

					struct dma_buf *dma_buf)

{

}



static inline void msm_dma_buf_freed(void *buffer) {}

#endif /*CONFIG_IOMMU_API*/



#endif