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intel-iommu: make domain_add_dev_info() call domain_context_mapping()

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All callers of the former were also calling the latter, in one order or
the other, and failing to correctly clean up if the second returned
failure.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-08-09 10:53:41 +01:00
parent a131bc1855
commit 5fe60f4e58
1 changed files with 15 additions and 20 deletions
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35
drivers/pci/intel-iommu.c
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@ -2094,15 +2094,23 @@ static int identity_mapping(struct pci_dev *pdev)
}
static int domain_add_dev_info(struct dmar_domain *domain,
struct pci_dev *pdev)
struct pci_dev *pdev,
int translation)
{
struct device_domain_info *info;
unsigned long flags;
int ret;
info = alloc_devinfo_mem();
if (!info)
return -ENOMEM;
ret = domain_context_mapping(domain, pdev, translation);
if (ret) {
free_devinfo_mem(info);
return ret;
}
info->segment = pci_domain_nr(pdev->bus);
info->bus = pdev->bus->number;
info->devfn = pdev->devfn;
@ -2173,15 +2181,11 @@ static int iommu_prepare_static_identity_mapping(int hw)
printk(KERN_INFO "IOMMU: %s identity mapping for device %s\n",
hw ? "hardware" : "software", pci_name(pdev));
ret = domain_context_mapping(si_domain, pdev,
ret = domain_add_dev_info(si_domain, pdev,
hw ? CONTEXT_TT_PASS_THROUGH :
CONTEXT_TT_MULTI_LEVEL);
if (ret)
return ret;
ret = domain_add_dev_info(si_domain, pdev);
if (ret)
return ret;
}
}
@ -2510,13 +2514,10 @@ static int iommu_no_mapping(struct device *dev)
*/
if (iommu_should_identity_map(pdev, 0)) {
int ret;
ret = domain_add_dev_info(si_domain, pdev);
if (ret)
return 0;
ret = domain_context_mapping(si_domain, pdev,
hw_pass_through ?
CONTEXT_TT_PASS_THROUGH :
CONTEXT_TT_MULTI_LEVEL);
ret = domain_add_dev_info(si_domain, pdev,
hw_pass_through ?
CONTEXT_TT_PASS_THROUGH :
CONTEXT_TT_MULTI_LEVEL);
if (!ret) {
printk(KERN_INFO "64bit %s uses identity mapping\n",
pci_name(pdev));
@ -3486,7 +3487,6 @@ static int intel_iommu_attach_device(struct iommu_domain *domain,
struct intel_iommu *iommu;
int addr_width;
u64 end;
int ret;
/* normally pdev is not mapped */
if (unlikely(domain_context_mapped(pdev))) {
@ -3518,12 +3518,7 @@ static int intel_iommu_attach_device(struct iommu_domain *domain,
return -EFAULT;
}
ret = domain_add_dev_info(dmar_domain, pdev);
if (ret)
return ret;
ret = domain_context_mapping(dmar_domain, pdev, CONTEXT_TT_MULTI_LEVEL);
return ret;
return domain_add_dev_info(dmar_domain, pdev, CONTEXT_TT_MULTI_LEVEL);
}
static void intel_iommu_detach_device(struct iommu_domain *domain,