From: Sebastian Ott Date: Tue, 18 Jun 2013 15:32:26 +0000 (+0200) Subject: s390/dma: fix mapping_error detection X-Git-Tag: v3.10~22^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=73e5a848426fae8e7f1f685389aa61d7a98e7c36;p=platform%2Fkernel%2Flinux-stable.git 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: Sebastian Ott Acked-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky --- diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index 886ac7d..9f15a36 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -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,