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ARM: dma-mapping: fix GFP_ATOMIC macro usage 

GFP_ATOMIC is not a single gfp flag, but a macro which expands to the other
flags and LACK of __GFP_WAIT flag. To check if caller wanted to perform an
atomic allocation, the code must test __GFP_WAIT flag presence. This patch
fixes the issue introduced in v3.6-rc5

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: stable@vger.kernel.org
This commit is contained in:
Marek Szyprowski 2014-01-16 15:39:17 +01:00
parent b28a960c42
commit 10c8562f93
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/dma-mapping.c
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@ -1358,7 +1358,7 @@ static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
*handle = DMA_ERROR_CODE;
size = PAGE_ALIGN(size);
if (gfp & GFP_ATOMIC)
if (!(gfp & __GFP_WAIT))
return __iommu_alloc_atomic(dev, size, handle);
/*