etnaviv_userptr_lock_class 18 drivers/gpu/drm/etnaviv/etnaviv_gem.c static struct lock_class_key etnaviv_userptr_lock_class; etnaviv_userptr_lock_class 734 drivers/gpu/drm/etnaviv/etnaviv_gem.c lockdep_set_class(&etnaviv_obj->lock, &etnaviv_userptr_lock_class);