diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2009-07-04 14:08:36 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-07-04 14:12:01 +0100 |
| commit | 736768325efcbee7b0861d62670d01a54c2d158b (patch) | |
| tree | c0f235e88302ebaac1184aa3097c7f9c7cc2f1c8 /drivers/pci/intel-iommu.c | |
| parent | 62edf5dc4a524e4cb525e6020b955a1ad593d9ba (diff) | |
intel-iommu: No mapping for non-PCI devices
This should fix kernel.org bug #11821, where the dcdbas driver makes up
a platform device and then uses dma_alloc_coherent() on it, in an
attempt to get memory < 4GiB.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/pci/intel-iommu.c')
| -rw-r--r-- | drivers/pci/intel-iommu.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 5ee8305257ea..fa052dd89913 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -2457,10 +2457,15 @@ static int iommu_should_identity_map(struct pci_dev *pdev) } /* Check if the pdev needs to go through non-identity map and unmap process.*/ -static int iommu_no_mapping(struct pci_dev *pdev) +static int iommu_no_mapping(struct device *dev) { + struct pci_dev *pdev; int found; + if (unlikely(dev->bus != &pci_bus_type)) + return 1; + + pdev = to_pci_dev(dev); if (iommu_dummy(pdev)) return 1; @@ -2516,7 +2521,7 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr, BUG_ON(dir == DMA_NONE); - if (iommu_no_mapping(pdev)) + if (iommu_no_mapping(hwdev)) return paddr; domain = get_valid_domain_for_dev(pdev); @@ -2656,7 +2661,7 @@ static void intel_unmap_page(struct device *dev, dma_addr_t dev_addr, struct iova *iova; struct intel_iommu *iommu; - if (iommu_no_mapping(pdev)) + if (iommu_no_mapping(dev)) return; domain = find_domain(pdev); @@ -2747,7 +2752,7 @@ static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist, struct iova *iova; struct intel_iommu *iommu; - if (iommu_no_mapping(pdev)) + if (iommu_no_mapping(hwdev)) return; domain = find_domain(pdev); @@ -2806,7 +2811,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne struct intel_iommu *iommu; BUG_ON(dir == DMA_NONE); - if (iommu_no_mapping(pdev)) + if (iommu_no_mapping(hwdev)) return intel_nontranslate_map_sg(hwdev, sglist, nelems, dir); domain = get_valid_domain_for_dev(pdev); |