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path: root/drivers/iommu/dmar.c
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Diffstat (limited to 'drivers/iommu/dmar.c')
-rw-r--r--drivers/iommu/dmar.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 3821c4786662..e913a930ac80 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -326,7 +326,9 @@ static int dmar_pci_bus_notifier(struct notifier_block *nb,
struct pci_dev *pdev = to_pci_dev(data);
struct dmar_pci_notify_info *info;
- /* Only care about add/remove events for physical functions */
+ /* Only care about add/remove events for physical functions.
+ * For VFs we actually do the lookup based on the corresponding
+ * PF in device_to_iommu() anyway. */
if (pdev->is_virtfn)
return NOTIFY_DONE;
if (action != BUS_NOTIFY_ADD_DEVICE &&
@@ -1858,10 +1860,11 @@ static int dmar_hp_remove_drhd(struct acpi_dmar_header *header, void *arg)
/*
* All PCI devices managed by this unit should have been destroyed.
*/
- if (!dmaru->include_all && dmaru->devices && dmaru->devices_cnt)
+ if (!dmaru->include_all && dmaru->devices && dmaru->devices_cnt) {
for_each_active_dev_scope(dmaru->devices,
dmaru->devices_cnt, i, dev)
return -EBUSY;
+ }
ret = dmar_ir_hotplug(dmaru, false);
if (ret == 0)