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s390/dma: do not call debug_dma after free

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In dma_free_coherent call debug_dma_free_coherent before deallocating
the memory to avoid a possible use after free.

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2013-05-17 16:37:59 +02:00 committed by Martin Schwidefsky
parent 519fe2ecb7
commit abd9a0c360
1 changed files with 1 additions and 1 deletions
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2
arch/s390/include/asm/dma-mapping.h
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@ -71,8 +71,8 @@ static inline void dma_free_coherent(struct device *dev, size_t size,
{ {
struct dma_map_ops *dma_ops = get_dma_ops(dev); struct dma_map_ops *dma_ops = get_dma_ops(dev);
dma_ops->free(dev, size, cpu_addr, dma_handle, NULL);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
dma_ops->free(dev, size, cpu_addr, dma_handle, NULL);
} }
#endif /* _ASM_S390_DMA_MAPPING_H */ #endif /* _ASM_S390_DMA_MAPPING_H */