Hi Tvrtko,
+bool is_object_gt(struct kobject *kobj)
Not sure if you will need it exported in a later patch but for now it seems only users are local to this file.
it is actually used by sysfs_gt.c and sysfs_gt_pm.c.
Thank you, Andi
PS. in this v4 I forgot to replace many drm_err() with drm_warn(), will do it properly in the next version.