netdev - Re: [PATCH 1/1] net: bridge: set error code on failure

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Date:   Mon, 5 Dec 2016 08:37:18 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Pan Bian <bianpan2016@....com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] net: bridge: set error code on failure

On Sat,  3 Dec 2016 19:33:23 +0800
Pan Bian <bianpan2016@....com> wrote:

> Function br_sysfs_addbr() does not set error code when the call
> kobject_create_and_add() returns a NULL pointer. It may be better to
> return "-ENOMEM" when kobject_create_and_add() fails.
> 
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188781
> 
> Signed-off-by: Pan Bian <bianpan2016@....com>
> ---
>  net/bridge/br_sysfs_br.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
> index e120307..f88c4df 100644
> --- a/net/bridge/br_sysfs_br.c
> +++ b/net/bridge/br_sysfs_br.c
> @@ -898,6 +898,7 @@ int br_sysfs_addbr(struct net_device *dev)
>  	if (!br->ifobj) {
>  		pr_info("%s: can't add kobject (directory) %s/%s\n",
>  			__func__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR);
> +		err = -ENOMEM;
>  		goto out3;
>  	}
>  	return 0;

Makes sense. Although such a small allocation should never fail.

Acked-by: Stephen Hemminger <stephen@...workplumber.org>