sysfs_remove_link
sysfs_remove_link(&adev->dev->kobj, adev_to_drm(adev)->unique);
sysfs_remove_link(&adev->dev->kobj,"xgmi_hive_info");
sysfs_remove_link(&hive->kobj, node);
sysfs_remove_link(minor->kdev->kobj.parent, name);