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Date: Tue, 4 Mar 2014 12:03:21 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Marek Szyprowski <m.szyprowski@...sung.com> Subject: [PATCH 3.10 08/97] ARM: dma-mapping: fix GFP_ATOMIC macro usage 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marek Szyprowski <m.szyprowski@...sung.com> 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@...sung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/arm/mm/dma-mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1311,7 +1311,7 @@ static void *arm_iommu_alloc_attrs(struc *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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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