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Date: Fri, 17 Jan 2014 09:46:38 +0100 From: Marek Szyprowski <m.szyprowski@...sung.com> To: linux-kernel@...r.kernel.org, x86@...nel.org Cc: Marek Szyprowski <m.szyprowski@...sung.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, stable@...r.kernel.org Subject: [PATCH] x86: 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 v3.5-rc1 CC: stable@...r.kernel.org Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com> --- arch/x86/kernel/pci-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 872079a..32a81c9 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -100,7 +100,7 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size, flag |= __GFP_ZERO; again: page = NULL; - if (!(flag & GFP_ATOMIC)) + if (flag & __GFP_WAIT) page = dma_alloc_from_contiguous(dev, count, get_order(size)); if (!page) page = alloc_pages_node(dev_to_node(dev), flag, get_order(size)); -- 1.7.9.5 -- 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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