311 	const struct attribute_group **groups, **old;  in rtc_add_groups()  local
314 		for (groups = grps; *groups; groups++)  in rtc_add_groups()
316 		/* No need to modify current groups if nothing new is provided */  in rtc_add_groups()
323 	groups = rtc->dev.groups;  in rtc_add_groups()
324 	if (groups)  in rtc_add_groups()
325 		for (; *groups; groups++)  in rtc_add_groups()
329 	groups = devm_kcalloc(&rtc->dev, new_cnt, sizeof(*groups), GFP_KERNEL);  in rtc_add_groups()
330 	if (!groups)  in rtc_add_groups()
332 	memcpy(groups, rtc->dev.groups, old_cnt * sizeof(*groups));  in rtc_add_groups()
333 	memcpy(groups + old_cnt, grps, add_cnt * sizeof(*groups));  in rtc_add_groups()
334 	groups[old_cnt + add_cnt] = NULL;  in rtc_add_groups()
336 	old = rtc->dev.groups;  in rtc_add_groups()
337 	rtc->dev.groups = groups;  in rtc_add_groups()
347 	const struct attribute_group *groups[] = { grp, NULL };  in rtc_add_group()  local
349 	return rtc_add_groups(rtc, groups);  in rtc_add_group()