netdev - Re: [PATCH] net: ieee802154: 6lowpan: remove redundant pointers 'fq' and 'net'

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Date:   Mon, 6 Aug 2018 11:10:49 +0200
From:   Stefan Schmidt <stefan@...enfreihafen.org>
To:     Colin King <colin.king@...onical.com>,
        Alexander Aring <alex.aring@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        linux-wpan@...r.kernel.org, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: ieee802154: 6lowpan: remove redundant pointers 'fq'
 and 'net'

Hello.

On 07/31/2018 05:45 PM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Pointers fq and net are being assigned but are never used hence they
> are redundant and can be removed.
> 
> Cleans up clang warnings:
> warning: variable 'fq' set but not used [-Wunused-but-set-variable]
> warning: variable 'net' set but not used [-Wunused-but-set-variable]
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  net/ieee802154/6lowpan/reassembly.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/net/ieee802154/6lowpan/reassembly.c b/net/ieee802154/6lowpan/reassembly.c
> index ec7a5da56129..e7857a8ac86d 100644
> --- a/net/ieee802154/6lowpan/reassembly.c
> +++ b/net/ieee802154/6lowpan/reassembly.c
> @@ -40,9 +40,6 @@ static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
>  static void lowpan_frag_init(struct inet_frag_queue *q, const void *a)
>  {
>  	const struct frag_lowpan_compare_key *key = a;
> -	struct lowpan_frag_queue *fq;
> -
> -	fq = container_of(q, struct lowpan_frag_queue, q);
>  
>  	BUILD_BUG_ON(sizeof(*key) > sizeof(q->key));
>  	memcpy(&q->key, key, sizeof(*key));
> @@ -52,10 +49,8 @@ static void lowpan_frag_expire(struct timer_list *t)
>  {
>  	struct inet_frag_queue *frag = from_timer(frag, t, timer);
>  	struct frag_queue *fq;
> -	struct net *net;
>  
>  	fq = container_of(frag, struct frag_queue, q);
> -	net = container_of(fq->q.net, struct net, ieee802154_lowpan.frags);
>  
>  	spin_lock(&fq->q.lock);
>  
> 

This patch has been applied to the wpan-next tree and will be
part of the next pull request to net-next. Thanks!

regards
Stefan Schmidt