diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2014-01-16 15:39:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-06 21:30:01 -0800 |
| commit | 1dca10b4c8528298fe5cf40cdbf4a480f9b0a429 (patch) | |
| tree | 54680d5d63d22c82e8fad99cc7db8f873ae5f4db | |
| parent | 0c9f21983490feb5637990d719e729bf77b99bd1 (diff) | |
ARM: dma-mapping: fix GFP_ATOMIC macro usage
commit 10c8562f932d89c030083e15f9279971ed637136 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index ef3e0f3aac9..6c9d7054d99 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1311,7 +1311,7 @@ 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); pages = __iommu_alloc_buffer(dev, size, gfp, attrs); |