netdev - Re: [PATCH net-next] net: bridge: remove unneeded variable 'err'

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Date:   Mon, 17 Dec 2018 19:16:56 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        <davem@...emloft.net>, <roopa@...ulusnetworks.com>
CC:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <bridge@...ts.linux-foundation.org>
Subject: Re: [PATCH net-next] net: bridge: remove unneeded variable 'err'

On 2018/12/17 17:51, Nikolay Aleksandrov wrote:
> On 17/12/2018 11:46, YueHaibing wrote:
>> function br_multicast_toggle now always return 0,
>> so the variable 'err' is unneeded.
>> Also cleanup dead branch in br_changelink.
>>
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>> ---
>>  net/bridge/br_multicast.c | 3 +--
>>  net/bridge/br_netlink.c   | 4 +---
>>  2 files changed, 2 insertions(+), 5 deletions(-)
>>
> 
> That is correct, but in such case just make it void.

In net/bridge/br_sysfs_br.c:

static ssize_t multicast_snooping_store(struct device *d,
                                        struct device_attribute *attr,
                                        const char *buf, size_t len)
{
        return store_bridge_parm(d, buf, len, br_multicast_toggle);
}

and store_bridge_parm need the returned err.

> 
> 
> 
>