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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>
This commit is contained in:
David Woodhouse 2012-05-25 17:43:02 +01:00 committed by Linus Torvalds
parent e2ad23d04c
commit 109b9b0408
1 changed files with 13 additions and 16 deletions
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29
drivers/iommu/intel-iommu.c
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@ -1907,6 +1907,15 @@ static void iommu_detach_dev(struct intel_iommu *iommu, u8 bus, u8 devfn)
iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH);
}
static inline void unlink_domain_info(struct device_domain_info *info)
{
assert_spin_locked(&device_domain_lock);
list_del(&info->link);
list_del(&info->global);
if (info->dev)
info->dev->dev.archdata.iommu = NULL;
}
static void domain_remove_dev_info(struct dmar_domain *domain)
{
struct device_domain_info *info;
@ -1917,10 +1926,7 @@ static void domain_remove_dev_info(struct dmar_domain *domain)
while (!list_empty(&domain->devices)) {
info = list_entry(domain->devices.next,
struct device_domain_info, link);
list_del(&info->link);
list_del(&info->global);
if (info->dev)
info->dev->dev.archdata.iommu = NULL;
unlink_domain_info(info);
spin_unlock_irqrestore(&device_domain_lock, flags);
iommu_disable_dev_iotlb(info);
@ -2302,9 +2308,7 @@ static int domain_add_dev_info(struct dmar_domain *domain,
ret = domain_context_mapping(domain, pdev, translation);
if (ret) {
spin_lock_irqsave(&device_domain_lock, flags);
list_del(&info->link);
list_del(&info->global);
pdev->dev.archdata.iommu = NULL;
unlink_domain_info(info);
spin_unlock_irqrestore(&device_domain_lock, flags);
free_devinfo_mem(info);
return ret;
@ -3733,10 +3737,7 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain,
if (info->segment == pci_domain_nr(pdev->bus) &&
info->bus == pdev->bus->number &&
info->devfn == pdev->devfn) {
list_del(&info->link);
list_del(&info->global);
if (info->dev)
info->dev->dev.archdata.iommu = NULL;
unlink_domain_info(info);
spin_unlock_irqrestore(&device_domain_lock, flags);
iommu_disable_dev_iotlb(info);
@ -3791,11 +3792,7 @@ static void vm_domain_remove_all_dev_info(struct dmar_domain *domain)
while (!list_empty(&domain->devices)) {
info = list_entry(domain->devices.next,
struct device_domain_info, link);
list_del(&info->link);
list_del(&info->global);
if (info->dev)
info->dev->dev.archdata.iommu = NULL;
unlink_domain_info(info);
spin_unlock_irqrestore(&device_domain_lock, flags1);
iommu_disable_dev_iotlb(info);