1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 30e8584137f5..adc2c9619e56 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1473,7 +1473,8 @@ static void iommu_enable_dev_iotlb(struct device_domain_info *info)
         if (info->pri_supported && !pci_reset_pri(pdev) && !pci_enable_pri(pdev, 32))
                 info->pri_enabled = 1;
 #endif
-        if (info->ats_supported && !pci_enable_ats(pdev, VTD_PAGE_SHIFT)) {
+        if (!pdev->untrusted && info->ats_supported &&
+            !pci_enable_ats(pdev, VTD_PAGE_SHIFT)) {
                 info->ats_enabled = 1;
                 domain_update_iotlb(info->domain);
                 info->ats_qdep = pci_ats_queue_depth(pdev);