diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-09-08 09:10:12 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-08 13:50:06 (GMT) |
| commit | 8a53ad675f86ee003482b557da944e070d3c4859 (patch) | |
| tree | f20f205bb29fec54405a60b706d9b444f79cd8e9 | |
| parent | de9f521fb72dd091aa4989fe2e004ecf4785a850 (diff) | |
| download | linux-8a53ad675f86ee003482b557da944e070d3c4859.tar.xz | |
x86: fix nommu_alloc_coherent allocation with NULL device argument
We need to use __GFP_DMA for NULL device argument (fallback_dev) with
pci-nommu. It's a hack for ISA (and some old code) so we need to use
GFP_DMA.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/pci-nommu.c | 3 | ||||
| -rw-r--r-- | include/asm-x86/dma-mapping.h | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c index 0f51883..ada1c87 100644 --- a/arch/x86/kernel/pci-nommu.c +++ b/arch/x86/kernel/pci-nommu.c @@ -80,7 +80,6 @@ nommu_alloc_coherent(struct device *hwdev, size_t size, int node; struct page *page; - gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32); gfp |= __GFP_ZERO; dma_mask = hwdev->coherent_dma_mask; @@ -93,7 +92,7 @@ nommu_alloc_coherent(struct device *hwdev, size_t size, node = dev_to_node(hwdev); #ifdef CONFIG_X86_64 - if (dma_mask <= DMA_32BIT_MASK) + if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA)) gfp |= GFP_DMA32; #endif diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h index 088c568..ad8b490 100644 --- a/include/asm-x86/dma-mapping.h +++ b/include/asm-x86/dma-mapping.h @@ -246,6 +246,8 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, struct dma_mapping_ops *ops = get_dma_ops(dev); void *memory; + gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32); + if (dma_alloc_from_coherent(dev, size, dma_handle, &memory)) return memory; |