diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-09-10 01:06:48 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-10 11:33:44 +0200 |
| commit | 49fbf4e9f982c704dc365698c5b5efa780aadcb5 (patch) | |
| tree | 64e8a4eb861a40b71ea559743c91b702a9fab95a /arch/x86/kernel/pci-nommu.c | |
| parent | ac4ff656c07ada78316307b0c0ce8a8eb48aa6dd (diff) | |
| download | kernel_samsung_smdk4412-49fbf4e9f982c704dc365698c5b5efa780aadcb5.zip kernel_samsung_smdk4412-49fbf4e9f982c704dc365698c5b5efa780aadcb5.tar.gz kernel_samsung_smdk4412-49fbf4e9f982c704dc365698c5b5efa780aadcb5.tar.bz2 | |
x86: convert pci-nommu to use is_buffer_dma_capable helper function
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>
Diffstat (limited to 'arch/x86/kernel/pci-nommu.c')
| -rw-r--r-- | arch/x86/kernel/pci-nommu.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c index 8e398b5..1c1c98a 100644 --- a/arch/x86/kernel/pci-nommu.c +++ b/arch/x86/kernel/pci-nommu.c @@ -14,7 +14,7 @@ static int check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size) { - if (hwdev && bus + size > *hwdev->dma_mask) { + if (hwdev && !is_buffer_dma_capable(*hwdev->dma_mask, bus, size)) { if (*hwdev->dma_mask >= DMA_32BIT_MASK) printk(KERN_ERR "nommu_%s: overflow %Lx+%zu of device mask %Lx\n", @@ -79,6 +79,7 @@ nommu_alloc_coherent(struct device *hwdev, size_t size, unsigned long dma_mask; int node; struct page *page; + dma_addr_t addr; dma_mask = dma_alloc_coherent_mask(hwdev, gfp); @@ -90,14 +91,15 @@ again: if (!page) return NULL; - if ((page_to_phys(page) + size > dma_mask) && !(gfp & GFP_DMA)) { + addr = page_to_phys(page); + if (!is_buffer_dma_capable(dma_mask, addr, size) && !(gfp & GFP_DMA)) { free_pages((unsigned long)page_address(page), get_order(size)); gfp |= GFP_DMA; goto again; } - *dma_addr = page_to_phys(page); - if (check_addr("alloc_coherent", hwdev, *dma_addr, size)) { + if (check_addr("alloc_coherent", hwdev, addr, size)) { + *dma_addr = addr; flush_write_buffers(); return page_address(page); } |