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dma-mapping: remove dma_release_declared_memory
This function is entirely unused given that declared memory is generally provided by platform setup code. Signed-off-by: Christoph Hellwig <hch@lst.de>
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@ -603,17 +603,6 @@ For reasons of efficiency, most platforms choose to track the declared
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region only at the granularity of a page. For smaller allocations,
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region only at the granularity of a page. For smaller allocations,
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you should use the dma_pool() API.
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you should use the dma_pool() API.
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::
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void
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dma_release_declared_memory(struct device *dev)
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Remove the memory region previously declared from the system. This
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API performs *no* in-use checking for this region and will return
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unconditionally having removed all the required structures. It is the
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driver's job to ensure that no parts of this memory region are
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currently in use.
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Part III - Debug drivers use of the DMA-API
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Part III - Debug drivers use of the DMA-API
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-------------------------------------------
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-------------------------------------------
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@ -764,7 +764,6 @@ static inline int dma_get_cache_alignment(void)
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#ifdef CONFIG_DMA_DECLARE_COHERENT
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#ifdef CONFIG_DMA_DECLARE_COHERENT
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int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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dma_addr_t device_addr, size_t size);
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dma_addr_t device_addr, size_t size);
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void dma_release_declared_memory(struct device *dev);
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#else
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#else
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static inline int
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static inline int
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dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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@ -772,11 +771,6 @@ dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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{
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{
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return -ENOSYS;
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return -ENOSYS;
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}
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}
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static inline void
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dma_release_declared_memory(struct device *dev)
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{
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}
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#endif /* CONFIG_DMA_DECLARE_COHERENT */
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#endif /* CONFIG_DMA_DECLARE_COHERENT */
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static inline void *dmam_alloc_coherent(struct device *dev, size_t size,
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static inline void *dmam_alloc_coherent(struct device *dev, size_t size,
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@ -124,17 +124,6 @@ int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
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}
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}
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EXPORT_SYMBOL(dma_declare_coherent_memory);
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EXPORT_SYMBOL(dma_declare_coherent_memory);
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void dma_release_declared_memory(struct device *dev)
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{
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struct dma_coherent_mem *mem = dev->dma_mem;
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if (!mem)
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return;
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dma_release_coherent_memory(mem);
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dev->dma_mem = NULL;
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}
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EXPORT_SYMBOL(dma_release_declared_memory);
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static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem,
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static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem,
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ssize_t size, dma_addr_t *dma_handle)
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ssize_t size, dma_addr_t *dma_handle)
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{
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{
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