netdev - Re: [PATCH net-next 6/6] net: marvell: prestera: Implement initial inetaddr notifiers

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Date:   Fri, 17 Dec 2021 13:03:25 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Yevhen Orlov <yevhen.orlov@...ision.eu>
Cc:     netdev@...r.kernel.org,
        Volodymyr Mytnyk <volodymyr.mytnyk@...ision.eu>,
        Taras Chornyi <taras.chornyi@...ision.eu>,
        Mickey Rachamim <mickeyr@...vell.com>,
        Serhiy Pshyk <serhiy.pshyk@...ision.eu>,
        Taras Chornyi <tchornyi@...vell.com>,
        Oleksandr Mazur <oleksandr.mazur@...ision.eu>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 6/6] net: marvell: prestera: Implement initial
 inetaddr notifiers

On Fri, 17 Dec 2021 21:54:38 +0200
Yevhen Orlov <yevhen.orlov@...ision.eu> wrote:

>  	switch (event) {
>  	case NETDEV_UP:
> +		if (re) {
> +			NL_SET_ERR_MSG_MOD(extack, "rif_entry already exist");
> +			return -EEXIST;
> +		}
> +		re = prestera_rif_entry_create(port->sw, &re_key,
> +					       prestera_fix_tb_id(kern_tb_id),
> +					       port_dev->dev_addr);
> +		if (!re) {
> +			NL_SET_ERR_MSG_MOD(extack, "Can't create rif_entry");
> +			return -EINVAL;
> +		}
> +		dev_hold(port_dev);

How are these device references cleaned up on module removal?