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| author |   Christoph Hellwig <hch@lst.de> | 2017-05-21 12:21:50 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-06-20 11:13:08 +0200 |
| commit | e0d60ac10ec01647bbdd3963831515dde17f2d70 (patch) | |
| tree | 2c9eb32852a9c1059f249bf9dd780166779480a0 /arch | |
| parent | xtensa: remove DMA_ERROR_CODE (diff) | |
| download | linux-dev-e0d60ac10ec01647bbdd3963831515dde17f2d70.tar.xz linux-dev-e0d60ac10ec01647bbdd3963831515dde17f2d70.zip | |
arm64: remove DMA_ERROR_CODE
The dma alloc interface returns an error by return NULL, and the
mapping interfaces rely on the mapping_error method, which the dummy
ops already implement correctly.
Thus remove the DMA_ERROR_CODE define.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/dma-mapping.h | 1 | ||||
| -rw-r--r-- | arch/arm64/mm/dma-mapping.c | 3 |
2 files changed, 1 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h index 5392dbeffa45..cf8fc8f05580 100644 --- a/arch/arm64/include/asm/dma-mapping.h +++ b/arch/arm64/include/asm/dma-mapping.h @@ -24,7 +24,6 @@ #include <xen/xen.h> #include <asm/xen/hypervisor.h> -#define DMA_ERROR_CODE (~(dma_addr_t)0) extern const struct dma_map_ops dummy_dma_ops; static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 3216e098c058..147fbb907a2f 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -184,7 +184,6 @@ static void *__dma_alloc(struct device *dev, size_t size, no_map: __dma_free_coherent(dev, size, ptr, *dma_handle, attrs); no_mem: - *dma_handle = DMA_ERROR_CODE; return NULL; } @@ -487,7 +486,7 @@ static dma_addr_t __dummy_map_page(struct device *dev, struct page *page, enum dma_data_direction dir, unsigned long attrs) { - return DMA_ERROR_CODE; + return 0; } static void __dummy_unmap_page(struct device *dev, dma_addr_t dev_addr, |