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authorLinus Torvalds <torvalds@linux-foundation.org>2014-02-20 11:58:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-02-20 11:58:56 -0800
commitd49649615d3673ec94139fbd0918fb13949a1d8b (patch)
treeced3194db6057c5bafee503465f2fb63d96e293a /arch
parentb080e047a61f7050246ff3081f87832997170d29 (diff)
parentc091c71ad2218fc50a07b3d1dab85783f3b77efd (diff)
downloadlinux-d49649615d3673ec94139fbd0918fb13949a1d8b.tar.bz2
Merge branch 'fixes-for-v3.14' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
Pull DMA-mapping fixes from Marek Szyprowski: "This contains fixes for incorrect atomic test in dma-mapping subsystem for ARM and x86 architecture" * 'fixes-for-v3.14' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: x86: dma-mapping: fix GFP_ATOMIC macro usage ARM: dma-mapping: fix GFP_ATOMIC macro usage
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/dma-mapping.c2
-rw-r--r--arch/x86/kernel/pci-dma.c4
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 1a77450e728a..11b3914660d2 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -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);
/*
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 872079a67e4d..f7d0672481fd 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -100,8 +100,10 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size,
flag |= __GFP_ZERO;
again:
page = NULL;
- if (!(flag & GFP_ATOMIC))
+ /* CMA can be used only in the context which permits sleeping */
+ if (flag & __GFP_WAIT)
page = dma_alloc_from_contiguous(dev, count, get_order(size));
+ /* fallback */
if (!page)
page = alloc_pages_node(dev_to_node(dev), flag, get_order(size));
if (!page)