diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 97926b1277b2..22c7d7eb35a0 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1328,6 +1328,15 @@ static void *arm_iommu_alloc_attrs(struct device *dev, size_t size, if (gfp & GFP_ATOMIC) return __iommu_alloc_atomic(dev, size, handle); + /* + * Following is a work-around (a.k.a. hack) to prevent pages + * with __GFP_COMP being passed to split_page() which cannot + * handle them. The real problem is that this flag probably + * should be 0 on ARM as it is not supported on this + * platform; see CONFIG_HUGETLBFS. + */ + gfp &= ~(__GFP_COMP); + pages = __iommu_alloc_buffer(dev, size, gfp, attrs); if (!pages) return NULL; |