Commit 79a98672 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Ulf Hansson
Browse files

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: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarMarc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 7559d612

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

+0 −7
Original line number Diff line number Diff line
@@ -89,13 +89,6 @@ static inline dma_addr_t virt_to_dma(struct device *dev, void *addr) 
}

#endif



/* The ARM override for dma_max_pfn() */

static inline unsigned long dma_max_pfn(struct device *dev)

{

	return dma_to_pfn(dev, *dev->dma_mask);

}

#define dma_max_pfn(dev) dma_max_pfn(dev)



/* do not use this function in a driver */

static inline bool is_device_dma_coherent(struct device *dev)

{

include/linux/dma-mapping.h

+0 −7
Original line number Diff line number Diff line
@@ -729,13 +729,6 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) 
	return -EIO;

}



#ifndef dma_max_pfn

static inline unsigned long dma_max_pfn(struct device *dev)

{

	return (*dev->dma_mask >> PAGE_SHIFT) + dev->dma_pfn_offset;

}

#endif



static inline int dma_get_cache_alignment(void)

{

#ifdef ARCH_DMA_MINALIGN

CRA Git | Maintained and supported by SUSTech CRA and CCSE