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Commit a0475af0 authored by Shiraz Hashim's avatar Shiraz Hashim Committed by Patrick Daly
Browse files

dma-mapping: fix build when !CONFIG_ARM_DMA_USE_IOMMU 



Allow compilation when CONFIG_ARM_DMA_USE_IOMMU is not
selected by providing necessary stub functions.

Change-Id: I04e3aa63407064e8d9c9550a5cb0a82ede899f00
Signed-off-by: default avatarShiraz Hashim <shashim@codeaurora.org>
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent 79d42bd7

arch/arm/include/asm/dma-iommu.h

+26 −0
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ struct dma_iommu_mapping { 
	struct kref		kref;

};



#ifdef CONFIG_ARM_DMA_USE_IOMMU



struct dma_iommu_mapping *

arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, u64 size);
@@ -33,5 +35,29 @@ int arm_iommu_attach_device(struct device *dev, 
					struct dma_iommu_mapping *mapping);

void arm_iommu_detach_device(struct device *dev);



#else  /* !CONFIG_ARM_DMA_USE_IOMMU */



static inline struct dma_iommu_mapping *

arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size)

{

	return NULL;

}



static inline void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping)

{

}



static inline int arm_iommu_attach_device(struct device *dev,

			struct dma_iommu_mapping *mapping)

{

	return -ENODEV;

}



static inline void arm_iommu_detach_device(struct device *dev)

{

}



#endif	/* CONFIG_ARM_DMA_USE_IOMMU */



#endif /* __KERNEL__ */

#endif