Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...

[karo-tx-linux.git] / drivers / iommu / amd_iommu.c

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 98f555dafb55c8edc32393919ee48140d024b184..b287ca33833df792350baad6f82fefbe1494e038 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2466,18 +2466,16 @@ static int device_change_notifier(struct notifier_block *nb,
 
                /* allocate a protection domain if a device is added */
                dma_domain = find_protection_domain(devid);
-               if (dma_domain)
-                       goto out;
-               dma_domain = dma_ops_domain_alloc();
-               if (!dma_domain)
-                       goto out;
-               dma_domain->target_dev = devid;
-
-               spin_lock_irqsave(&iommu_pd_list_lock, flags);
-               list_add_tail(&dma_domain->list, &iommu_pd_list);
-               spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
-
-               dev_data = get_dev_data(dev);
+               if (!dma_domain) {
+                       dma_domain = dma_ops_domain_alloc();
+                       if (!dma_domain)
+                               goto out;
+                       dma_domain->target_dev = devid;
+
+                       spin_lock_irqsave(&iommu_pd_list_lock, flags);
+                       list_add_tail(&dma_domain->list, &iommu_pd_list);
+                       spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
+               }
 
                dev->archdata.dma_ops = &amd_iommu_dma_ops;