1 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index a8e74c34dd27..12a541deae5e 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1195,6 +1195,8 @@ static int device_change_notifier(struct notifier_block *nb,
         case BUS_NOTIFY_UNBOUND_DRIVER:
                 if (!domain)
                         goto out;
+                if (iommu_pass_through)
+                        break;
                 detach_device(domain, devid);
                 break;
         case BUS_NOTIFY_ADD_DEVICE: