static int __snd_ctl_add_replace(struct snd_card *card,
				 struct snd_kcontrol *kcontrol,
				 enum snd_ctl_add_mode mode)
{
	struct snd_ctl_elem_id id;
	unsigned int idx;
	struct snd_kcontrol *old;
	int err;

	id = kcontrol->id;
	if (id.index > UINT_MAX - kcontrol->count)
		return -EINVAL;

	old = snd_ctl_find_id(card, &id);
	if (!old) {
		if (mode == CTL_REPLACE)
			return -EINVAL;
	} else {
		if (mode == CTL_ADD_EXCLUSIVE) {
			dev_err(card->dev,
				"control %i:%i:%i:%s:%i is already present\n",
				id.iface, id.device, id.subdevice, id.name,
				id.index);
			return -EBUSY;
		}

		err = snd_ctl_remove(card, old);
		if (err < 0)
			return err;
	}

	if (snd_ctl_find_hole(card, kcontrol->count) < 0)
		return -ENOMEM;

	list_add_tail(&kcontrol->list, &card->controls);
	card->controls_count += kcontrol->count;
	kcontrol->id.numid = card->last_numid + 1;
	card->last_numid += kcontrol->count;

	add_hash_entries(card, kcontrol);

	for (idx = 0; idx < kcontrol->count; idx++)
		snd_ctl_notify_one(card, SNDRV_CTL_EVENT_MASK_ADD, kcontrol, idx);

	return 0;
}