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scsi: dma-mapping: always provide dma_get_cache_alignment

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commit 860dd4424f upstream.

Provide the dummy version of dma_get_cache_alignment that always returns
1 even if CONFIG_HAS_DMA is not set, so that drivers and subsystems can
use it without ifdefs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christoph Hellwig
2017-11-21 14:23:37 +01:00
committed by Greg Kroah-Hartman
parent 400391d711
commit bc2b304604
1 changed files with 0 additions and 2 deletions
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include/linux/dma-mapping.h
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@@ -697,7 +697,6 @@ static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
return ret;
}
#ifdef CONFIG_HAS_DMA
static inline int dma_get_cache_alignment(void)
{
#ifdef ARCH_DMA_MINALIGN
@@ -705,7 +704,6 @@ static inline int dma_get_cache_alignment(void)
#endif
return 1;
}
#endif
/* flags for the coherent memory api */
#define DMA_MEMORY_EXCLUSIVE 0x01