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authorSebastian Ott <sebott@linux.vnet.ibm.com>2013-06-18 17:32:26 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-19 09:25:42 +0200
commit73e5a848426fae8e7f1f685389aa61d7a98e7c36 (patch)
treecfd900078f9b66a5b53d97d64243065ae0b1aef9 /arch/s390/include
parent690cec8e70c211d1f5f6e520b21a68d0306173b6 (diff)
downloadlinux-73e5a848426fae8e7f1f685389aa61d7a98e7c36.tar.bz2
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 <sebott@linux.vnet.ibm.com> Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/dma-mapping.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h
index 886ac7d4937a..9f15a36f6fd9 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,