cdev_delete
enabled_ops[THERMAL_GENL_EVENT_CDEV_DELETE] = !!ops->cdev_delete;
return ops->cdev_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]), arg);
int (*cdev_delete)(int cdev_id, void *arg);
.events.cdev_delete = cdev_delete,