linux-kernel - Re: [PATCH] net/bridge/br_multicast: remove redundant variable "err"

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Date:   Sun, 05 Aug 2018 17:33:36 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     zhongjiang@...wei.com
Cc:     stephen@...workplumber.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net/bridge/br_multicast: remove redundant variable
 "err"

From: zhong jiang <zhongjiang@...wei.com>
Date: Sun, 5 Aug 2018 22:18:43 +0800

> @@ -1797,7 +1795,7 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br,
>  	struct sk_buff *skb_trimmed = NULL;
>  	const unsigned char *src;
>  	struct igmphdr *ih;
> -	int err;
> +	int err = 0;
>  
>  	err = ip_mc_check_igmp(skb, &skb_trimmed);

The initialization of err to '0' is unnecessary, it gets assigned on
the very next line.