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[1/3] dma-mapping: always provide dma_get_cache_alignment

Message ID 20171121132339.1702-2-hch@lst.de (mailing list archive)
State Accepted
Headers show

Commit Message

Christoph Hellwig Nov. 21, 2017, 1:23 p.m. UTC 
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>
---
 include/linux/dma-mapping.h | 2 --
 1 file changed, 2 deletions(-)
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Patch

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index e8f8e8fb244d..81ed9b2d84dc 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -704,7 +704,6 @@  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
@@ -712,7 +711,6 @@  static inline int dma_get_cache_alignment(void)
 #endif
 	return 1;
 }
-#endif
 
 /* flags for the coherent memory api */
 #define DMA_MEMORY_EXCLUSIVE		0x01