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iommu/amd: Remove device binding reference count

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This reference count is not used anymore, as all devices in
an alias group are now attached and detached together.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2014-08-05 17:34:25 +02:00
parent 397111abaa
commit cafd2545cf
1 changed files with 0 additions and 3 deletions
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3
drivers/iommu/amd_iommu.c
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@ -96,7 +96,6 @@ struct iommu_dev_data {
struct list_head alias_list; /* Link alias-groups together */
struct iommu_dev_data *alias_data;/* The alias dev_data */
struct protection_domain *domain; /* Domain the device is bound to */
atomic_t bind; /* Domain attach reference count */
u16 devid; /* PCI Device ID */
bool iommu_v2; /* Device can make use of IOMMUv2 */
bool passthrough; /* Default for device is pt_domain */
@ -139,7 +138,6 @@ static struct iommu_dev_data *alloc_dev_data(u16 devid)
INIT_LIST_HEAD(&dev_data->alias_list);
dev_data->devid = devid;
atomic_set(&dev_data->bind, 0);
spin_lock_irqsave(&dev_data_list_lock, flags);
list_add_tail(&dev_data->dev_data_list, &dev_data_list);
@ -3179,7 +3177,6 @@ static void cleanup_domain(struct protection_domain *domain)
entry = list_first_entry(&domain->dev_list,
struct iommu_dev_data, list);
__detach_device(entry);
atomic_set(&entry->bind, 0);
}
write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);