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authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-12 22:30:06 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-12 22:30:06 +0200
commit52269718dc2cf2585d7a2828f31d46ef46e68000 (patch)
tree9815c6cbaa8c2e3247b6356725c150831dfd4d4e /include
parentMerge tag 'uuid-for-4.14' of git://git.infradead.org/users/hch/uuid (diff)
parentdma-coherent: fix dma_declare_coherent_memory() logic error (diff)
downloadlinux-52269718dc2cf2585d7a2828f31d46ef46e68000.tar.xz
linux-52269718dc2cf2585d7a2828f31d46ef46e68000.zip
Merge tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig: - removal of the old dma_alloc_noncoherent interface - remove unused flags to dma_declare_coherent_memory - restrict OF DMA configuration to specific physical busses - use the iommu mailing list for dma-mapping questions and patches * tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping: dma-coherent: fix dma_declare_coherent_memory() logic error ARM: imx: mx31moboard: Remove unused 'dma' variable dma-coherent: remove an unused variable MAINTAINERS: use the iommu list for the dma-mapping subsystem dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag of: restrict DMA configuration dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent i825xx: switch to switch to dma_alloc_attrs au1000_eth: switch to dma_alloc_attrs sgiseeq: switch to dma_alloc_attrs dma-mapping: reduce dma_mapping_error inline bloat
Diffstat (limited to 'include')
-rw-r--r--include/linux/dma-mapping.h28
1 files changed, 6 insertions, 22 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 2189c79cde5d..29ce9815da87 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -550,26 +550,13 @@ static inline void dma_free_coherent(struct device *dev, size_t size,
return dma_free_attrs(dev, size, cpu_addr, dma_handle, 0);
}
-static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp)
-{
- return dma_alloc_attrs(dev, size, dma_handle, gfp,
- DMA_ATTR_NON_CONSISTENT);
-}
-
-static inline void dma_free_noncoherent(struct device *dev, size_t size,
- void *cpu_addr, dma_addr_t dma_handle)
-{
- dma_free_attrs(dev, size, cpu_addr, dma_handle,
- DMA_ATTR_NON_CONSISTENT);
-}
-
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
- debug_dma_mapping_error(dev, dma_addr);
+ const struct dma_map_ops *ops = get_dma_ops(dev);
- if (get_dma_ops(dev)->mapping_error)
- return get_dma_ops(dev)->mapping_error(dev, dma_addr);
+ debug_dma_mapping_error(dev, dma_addr);
+ if (ops->mapping_error)
+ return ops->mapping_error(dev, dma_addr);
return 0;
}
@@ -720,10 +707,7 @@ 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_INCLUDES_CHILDREN 0x04
-#define DMA_MEMORY_EXCLUSIVE 0x08
+#define DMA_MEMORY_EXCLUSIVE 0x01
#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
@@ -736,7 +720,7 @@ 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