Commit 860dd442 authored Nov 21, 2017 by Christoph Hellwig Committed by Martin K. Petersen Nov 21, 2017

scsi: dma-mapping: always provide dma_get_cache_alignment



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.

Cc: stable@vger.kernel.org
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent 72753590

include/linux/dma-mapping.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -710,7 +710,6 @@ 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
		@@ -718,7 +717,6 @@ static inline int dma_get_cache_alignment(void)
		#endif
		return 1;
		}
		#endif

		/* flags for the coherent memory api */
		#define DMA_MEMORY_EXCLUSIVE 0x01