diff options
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 3f691e1fd22c..23a168e229b1 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2073,6 +2073,7 @@ static int attach_device(struct device *dev, struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev); struct amd_iommu *iommu = get_amd_iommu_from_dev_data(dev_data); struct pci_dev *pdev; + unsigned long flags; int ret = 0; mutex_lock(&dev_data->mutex); @@ -2113,7 +2114,9 @@ static int attach_device(struct device *dev, /* Update data structures */ dev_data->domain = domain; + spin_lock_irqsave(&domain->lock, flags); list_add(&dev_data->list, &domain->dev_list); + spin_unlock_irqrestore(&domain->lock, flags); /* Update device table */ dev_update_dte(dev_data, true); @@ -2160,6 +2163,7 @@ static void detach_device(struct device *dev) /* Flush IOTLB and wait for the flushes to finish */ spin_lock_irqsave(&domain->lock, flags); amd_iommu_domain_flush_all(domain); + list_del(&dev_data->list); spin_unlock_irqrestore(&domain->lock, flags); /* Clear GCR3 table */ @@ -2168,7 +2172,6 @@ static void detach_device(struct device *dev) /* Update data structures */ dev_data->domain = NULL; - list_del(&dev_data->list); /* decrease reference counters - needs to happen after the flushes */ pdom_detach_iommu(iommu, domain); |