linux-kernel - Re: [PATCH][V2][netdev-next] gre: remove duplicated assignment of iph

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Date:   Wed, 23 Aug 2017 15:26:19 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     Colin King <colin.king@...onical.com>,
        William Tu <u9012063@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH][V2][netdev-next] gre: remove duplicated assignment of iph

On 23/08/17 14:59, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> iph is being assigned the same value twice; remove the redundant
> first assignment. (Thanks to Nikolay Aleksandrov for pointing out
> that the first asssignment should be removed and not the second)
> 
> Fixes warning:
> net/ipv4/ip_gre.c:265:2: warning: Value stored to 'iph' is never read
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  net/ipv4/ip_gre.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
> index 6e8a62289e03..161326f7f10b 100644
> --- a/net/ipv4/ip_gre.c
> +++ b/net/ipv4/ip_gre.c
> @@ -262,7 +262,6 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi,
>  	int len;
>  
>  	itn = net_generic(net, erspan_net_id);
> -	iph = ip_hdr(skb);
>  	len = gre_hdr_len + sizeof(*ershdr);
>  
>  	if (unlikely(!pskb_may_pull(skb, len)))
> 

LGTM,

Reviewed-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>