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Commit 73e5a848 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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s390/dma: fix mapping_error detection 



The map_page implementation of s390 returns DMA_ERROR_CODE in an error
situation. Correctly test if a mapping was erroneous (DMA_ERROR_CODE is
defined as ~0).

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: default avatarGerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 690cec8e

arch/s390/include/asm/dma-mapping.h

+1 −1
Original line number Diff line number Diff line
@@ -52,7 +52,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) 


	if (dma_ops->mapping_error)

		return dma_ops->mapping_error(dev, dma_addr);

	return (dma_addr == 0UL);

	return (dma_addr == DMA_ERROR_CODE);

}



static inline void *dma_alloc_coherent(struct device *dev, size_t size,