wusbhc_kobj 304 drivers/staging/wusbcore/wusbhc.c result = sysfs_create_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group); wusbhc_kobj 320 drivers/staging/wusbcore/wusbhc.c sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);