intel-iommu: Move duplicate list-mangling code into unlink_domain_info() helper
Now we have four copies of this code, Linus "suggested" it was about time we stopped copying it and turned it into a helper. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1907,6 +1907,15 @@ static void iommu_detach_dev(struct intel_iommu *iommu, u8 bus, u8 devfn)
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iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH);
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}
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static inline void unlink_domain_info(struct device_domain_info *info)
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{
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assert_spin_locked(&device_domain_lock);
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list_del(&info->link);
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list_del(&info->global);
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if (info->dev)
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info->dev->dev.archdata.iommu = NULL;
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}
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static void domain_remove_dev_info(struct dmar_domain *domain)
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{
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struct device_domain_info *info;
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@ -1917,10 +1926,7 @@ static void domain_remove_dev_info(struct dmar_domain *domain)
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while (!list_empty(&domain->devices)) {
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info = list_entry(domain->devices.next,
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struct device_domain_info, link);
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list_del(&info->link);
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list_del(&info->global);
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if (info->dev)
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info->dev->dev.archdata.iommu = NULL;
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unlink_domain_info(info);
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spin_unlock_irqrestore(&device_domain_lock, flags);
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iommu_disable_dev_iotlb(info);
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@ -2302,9 +2308,7 @@ static int domain_add_dev_info(struct dmar_domain *domain,
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ret = domain_context_mapping(domain, pdev, translation);
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if (ret) {
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spin_lock_irqsave(&device_domain_lock, flags);
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list_del(&info->link);
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list_del(&info->global);
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pdev->dev.archdata.iommu = NULL;
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unlink_domain_info(info);
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spin_unlock_irqrestore(&device_domain_lock, flags);
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free_devinfo_mem(info);
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return ret;
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@ -3733,10 +3737,7 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain,
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if (info->segment == pci_domain_nr(pdev->bus) &&
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info->bus == pdev->bus->number &&
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info->devfn == pdev->devfn) {
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list_del(&info->link);
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list_del(&info->global);
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if (info->dev)
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info->dev->dev.archdata.iommu = NULL;
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unlink_domain_info(info);
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spin_unlock_irqrestore(&device_domain_lock, flags);
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iommu_disable_dev_iotlb(info);
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@ -3791,11 +3792,7 @@ static void vm_domain_remove_all_dev_info(struct dmar_domain *domain)
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while (!list_empty(&domain->devices)) {
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info = list_entry(domain->devices.next,
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struct device_domain_info, link);
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list_del(&info->link);
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list_del(&info->global);
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if (info->dev)
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info->dev->dev.archdata.iommu = NULL;
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unlink_domain_info(info);
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spin_unlock_irqrestore(&device_domain_lock, flags1);
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iommu_disable_dev_iotlb(info);
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