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dma-mapping: remove dma_max_pfn
These days, the DMA mapping code must bounce buffers for any unsupported address. If the driver needs to optimize for natively supported ranges, then it should use dma_get_required_mask. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Marc Gonzalez <marc.w.gonzalez@free.fr> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -89,13 +89,6 @@ static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
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}
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#endif
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/* The ARM override for dma_max_pfn() */
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static inline unsigned long dma_max_pfn(struct device *dev)
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{
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return dma_to_pfn(dev, *dev->dma_mask);
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}
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#define dma_max_pfn(dev) dma_max_pfn(dev)
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/* do not use this function in a driver */
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static inline bool is_device_dma_coherent(struct device *dev)
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{
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@ -729,13 +729,6 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
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return -EIO;
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}
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#ifndef dma_max_pfn
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static inline unsigned long dma_max_pfn(struct device *dev)
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{
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return (*dev->dma_mask >> PAGE_SHIFT) + dev->dma_pfn_offset;
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}
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#endif
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static inline int dma_get_cache_alignment(void)
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{
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#ifdef ARCH_DMA_MINALIGN
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