iommu/amd: Allow non-IOMMUv2 devices in IOMMUv2 domains

Since devices with IOMMUv2 functionality might be in the
same group as devices without it, allow those devices in
IOMMUv2 domains too.
Otherwise attaching the group with the IOMMUv2 device to the
domain will fail.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 89e6d4b2cdb627f4502e905ed1dc13f603bbf411..6d3dae9628676ec0bb6768d7e8ddd8b4e35fb91a 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2164,15 +2164,17 @@ static int attach_device(struct device *dev,
        dev_data = get_dev_data(dev);
 
        if (domain->flags & PD_IOMMUV2_MASK) {
-               if (!dev_data->iommu_v2 || !dev_data->passthrough)
+               if (!dev_data->passthrough)
                        return -EINVAL;
 
-               if (pdev_iommuv2_enable(pdev) != 0)
-                       return -EINVAL;
+               if (dev_data->iommu_v2) {
+                       if (pdev_iommuv2_enable(pdev) != 0)
+                               return -EINVAL;
 
-               dev_data->ats.enabled = true;
-               dev_data->ats.qdep    = pci_ats_queue_depth(pdev);
-               dev_data->pri_tlp     = pci_pri_tlp_required(pdev);
+                       dev_data->ats.enabled = true;
+                       dev_data->ats.qdep    = pci_ats_queue_depth(pdev);
+                       dev_data->pri_tlp     = pci_pri_tlp_required(pdev);
+               }
        } else if (amd_iommu_iotlb_sup &&
                   pci_enable_ats(pdev, PAGE_SHIFT) == 0) {
                dev_data->ats.enabled = true;
@@ -2237,7 +2239,7 @@ static void detach_device(struct device *dev)
        __detach_device(dev_data);
        write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
 
-       if (domain->flags & PD_IOMMUV2_MASK)
+       if (domain->flags & PD_IOMMUV2_MASK && dev_data->iommu_v2)
                pdev_iommuv2_disable(to_pci_dev(dev));
        else if (dev_data->ats.enabled)
                pci_disable_ats(to_pci_dev(dev));