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iommu/vt-d: Remove device_to_iommu() call from domain_remove_dev_info()

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This was problematic because it works by domain/bus/devfn and we want
to make device_to_iommu() use only a struct device * (for handling non-PCI
devices). Now that the iommu pointer is reliably stored in the
device_domain_info, we don't need to look it up.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2014-03-09 13:33:06 -07:00
parent 8bbc441012
commit 7c7faa11ec
1 changed files with 3 additions and 5 deletions
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8
drivers/iommu/intel-iommu.c
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@ -2084,7 +2084,6 @@ static void domain_remove_dev_info(struct dmar_domain *domain)
{
struct device_domain_info *info;
unsigned long flags, flags2;
struct intel_iommu *iommu;
spin_lock_irqsave(&device_domain_lock, flags);
while (!list_empty(&domain->devices)) {
@ -2094,16 +2093,15 @@ static void domain_remove_dev_info(struct dmar_domain *domain)
spin_unlock_irqrestore(&device_domain_lock, flags);
iommu_disable_dev_iotlb(info);
iommu = device_to_iommu(info->segment, info->bus, info->devfn);
iommu_detach_dev(iommu, info->bus, info->devfn);
iommu_detach_dev(info->iommu, info->bus, info->devfn);
if (domain->flags & DOMAIN_FLAG_VIRTUAL_MACHINE) {
iommu_detach_dependent_devices(iommu, info->dev);
iommu_detach_dependent_devices(info->iommu, info->dev);
/* clear this iommu in iommu_bmp, update iommu count
* and capabilities
*/
spin_lock_irqsave(&domain->iommu_lock, flags2);
if (test_and_clear_bit(iommu->seq_id,
if (test_and_clear_bit(info->iommu->seq_id,
domain->iommu_bmp)) {
domain->iommu_count--;
domain_update_iommu_cap(domain);