diff options
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 26 |
1 files changed, 3 insertions, 23 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 6070b15..e8443e6 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2028,29 +2028,17 @@ static void do_detach(struct iommu_dev_data *dev_data) static int __attach_device(struct iommu_dev_data *dev_data, struct protection_domain *domain) { - struct iommu_dev_data *head, *entry; int ret; /* lock domain */ spin_lock(&domain->lock); - head = dev_data; - - if (head->alias_data != NULL) - head = head->alias_data; - - /* Now we have the root of the alias group, if any */ - ret = -EBUSY; - if (head->domain != NULL) + if (dev_data->domain != NULL) goto out_unlock; /* Attach alias group root */ - do_attach(head, domain); - - /* Attach other devices in the alias group */ - list_for_each_entry(entry, &head->alias_list, alias_list) - do_attach(entry, domain); + do_attach(dev_data, domain); ret = 0; @@ -2200,7 +2188,6 @@ static int attach_device(struct device *dev, */ static void __detach_device(struct iommu_dev_data *dev_data) { - struct iommu_dev_data *head, *entry; struct protection_domain *domain; unsigned long flags; @@ -2211,14 +2198,7 @@ static void __detach_device(struct iommu_dev_data *dev_data) spin_lock_irqsave(&domain->lock, flags); - head = dev_data; - if (head->alias_data != NULL) - head = head->alias_data; - - list_for_each_entry(entry, &head->alias_list, alias_list) - do_detach(entry); - - do_detach(head); + do_detach(dev_data); spin_unlock_irqrestore(&domain->lock, flags); } |