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Merge branch 'fixes-for-3.9' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping

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Pull DMA-mapping fix from Marek Szyprowski:
 "An important fix for all ARM architectures which use ZONE_DMA.
  Without it dma_alloc_* calls with GFP_ATOMIC flag might have allocated
  buffers outsize DMA zone."

* 'fixes-for-3.9' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
  ARM: DMA-mapping: add missing GFP_DMA flag for atomic buffer allocation
This commit is contained in:
Linus Torvalds 2013-03-15 17:35:03 -07:00
commit c7f17deb31
1 changed files with 3 additions and 2 deletions
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arch/arm/mm/dma-mapping.c
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@ -342,6 +342,7 @@ static int __init atomic_pool_init(void)
{ {
struct dma_pool *pool = &atomic_pool; struct dma_pool *pool = &atomic_pool;
pgprot_t prot = pgprot_dmacoherent(pgprot_kernel); pgprot_t prot = pgprot_dmacoherent(pgprot_kernel);
gfp_t gfp = GFP_KERNEL | GFP_DMA;
unsigned long nr_pages = pool->size >> PAGE_SHIFT; unsigned long nr_pages = pool->size >> PAGE_SHIFT;
unsigned long *bitmap; unsigned long *bitmap;
struct page *page; struct page *page;
@ -361,8 +362,8 @@ static int __init atomic_pool_init(void)
ptr = __alloc_from_contiguous(NULL, pool->size, prot, &page, ptr = __alloc_from_contiguous(NULL, pool->size, prot, &page,
atomic_pool_init); atomic_pool_init);
else else
ptr = __alloc_remap_buffer(NULL, pool->size, GFP_KERNEL, prot, ptr = __alloc_remap_buffer(NULL, pool->size, gfp, prot, &page,
&page, atomic_pool_init); atomic_pool_init);
if (ptr) { if (ptr) {
int i; int i;