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dma-mapping: remove DMA_ERROR_CODE

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And update the documentation - dma_mapping_error has been supported
everywhere for a long time.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2017-05-22 10:58:49 +02:00
parent 9eef8b8cc2
commit f51f288e23
2 changed files with 5 additions and 31 deletions
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5
include/linux/dma-mapping.h
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@@ -546,12 +546,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
if (get_dma_ops(dev)->mapping_error)
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
#ifdef DMA_ERROR_CODE
return dma_addr == DMA_ERROR_CODE;
#else
return 0;
#endif
}
#ifndef HAVE_ARCH_DMA_SUPPORTED