diff options
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 968e3d32e305..0984fa58d872 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -425,6 +425,8 @@ static void domain_remove_one_dev_info(struct dmar_domain *domain, struct device *dev); static void iommu_detach_dependent_devices(struct intel_iommu *iommu, struct device *dev); +static int domain_detach_iommu(struct dmar_domain *domain, + struct intel_iommu *iommu); #ifdef CONFIG_INTEL_IOMMU_DEFAULT_ON int dmar_disabled = 0; @@ -1465,8 +1467,7 @@ static int iommu_init_domains(struct intel_iommu *iommu) static void free_dmar_iommu(struct intel_iommu *iommu) { struct dmar_domain *domain; - int i, count; - unsigned long flags; + int i; if ((iommu->domains) && (iommu->domain_ids)) { for_each_set_bit(i, iommu->domain_ids, cap_ndoms(iommu->cap)) { @@ -1479,11 +1480,7 @@ static void free_dmar_iommu(struct intel_iommu *iommu) domain = iommu->domains[i]; clear_bit(i, iommu->domain_ids); - - spin_lock_irqsave(&domain->iommu_lock, flags); - count = --domain->iommu_count; - spin_unlock_irqrestore(&domain->iommu_lock, flags); - if (count == 0) + if (domain_detach_iommu(domain, iommu) == 0) domain_exit(domain); } } |