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authorChristoph Hellwig <hch@lst.de>2017-08-25 17:13:09 +0200
committerChristoph Hellwig <hch@lst.de>2017-09-01 11:59:17 +0200
commit2436bdcda53ff4abb7897c87fa29ef3de8055344 (patch)
treeaa9204da61d1e888fea12ac09c948f5d77e793c5 /include
parentdma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag (diff)
downloadlinux-2436bdcda53ff4abb7897c87fa29ef3de8055344.tar.xz
linux-2436bdcda53ff4abb7897c87fa29ef3de8055344.zip
dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
DMA_MEMORY_IO was never used in the tree, so remove it. That means there is no need for the DMA_MEMORY_MAP flag either now, so remove it as well and change dma_declare_coherent_memory to return a normal errno value. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/dma-mapping.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index abf369b11f54..b7dd11c02a45 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -694,9 +694,7 @@ static inline int dma_get_cache_alignment(void)
#endif
/* flags for the coherent memory api */
-#define DMA_MEMORY_MAP 0x01
-#define DMA_MEMORY_IO 0x02
-#define DMA_MEMORY_EXCLUSIVE 0x04
+#define DMA_MEMORY_EXCLUSIVE 0x01
#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
@@ -709,7 +707,7 @@ static inline int
dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
dma_addr_t device_addr, size_t size, int flags)
{
- return 0;
+ return -ENOSYS;
}
static inline void