1 files changed, 7 insertions, 22 deletions

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index c488da5db7c7..6d18c3cafdd4 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -494,27 +494,6 @@ static int vfio_group_nb_add_dev(struct vfio_group *group, struct device *dev)
         return 0;
 }
 
-static int vfio_group_nb_del_dev(struct vfio_group *group, struct device *dev)
-{
-        struct vfio_device *device;
-
-        /*
-         * Expect to fall out here.  If a device was in use, it would
-         * have been bound to a vfio sub-driver, which would have blocked
-         * in .remove at vfio_del_group_dev.  Sanity check that we no
-         * longer track the device, so it's safe to remove.
-         */
-        device = vfio_group_get_device(group, dev);
-        if (likely(!device))
-                return 0;
-
-        WARN("Device %s removed from live group %d!\n", dev_name(dev),
-             iommu_group_id(group->iommu_group));
-
-        vfio_device_put(device);
-        return 0;
-}
-
 static int vfio_group_nb_verify(struct vfio_group *group, struct device *dev)
 {
         /* We don't care what happens when the group isn't in use */
@@ -545,7 +524,13 @@ static int vfio_iommu_group_notifier(struct notifier_block *nb,
                 vfio_group_nb_add_dev(group, dev);
                 break;
         case IOMMU_GROUP_NOTIFY_DEL_DEVICE:
-                vfio_group_nb_del_dev(group, dev);
+                /*
+                 * Nothing to do here.  If the device is in use, then the
+                 * vfio sub-driver should block the remove callback until
+                 * it is unused.  If the device is unused or attached to a
+                 * stub driver, then it should be released and we don't
+                 * care that it will be going away.
+                 */
                 break;
         case IOMMU_GROUP_NOTIFY_BIND_DRIVER:
                 pr_debug("%s: Device %s, group %d binding to driver\n",