netdev - Re: [PATCH] tuntap: remove unused variable in __tun

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Date:	Wed, 13 Mar 2013 09:30:49 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Wei Yongjun <weiyj.lk@...il.com>
Cc:	davem@...emloft.net, jasowang@...hat.com, mst@...hat.com,
	edumazet@...gle.com, yongjun_wei@...ndmicro.com.cn,
	netdev@...r.kernel.org
Subject: Re: [PATCH] tuntap: remove unused variable in __tun_detach()

On Wed, Mar 13, 2013 at 09:03:58PM +0800, Wei Yongjun wrote:
> From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> 
> The variable dev is initialized but never used
> otherwise, so remove the unused variable.
> 
> Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> ---
>  drivers/net/tun.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index b7c457a..95837c1 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -409,14 +409,12 @@ static void __tun_detach(struct tun_file *tfile, bool clean)
>  {
>  	struct tun_file *ntfile;
>  	struct tun_struct *tun;
> -	struct net_device *dev;
>  
>  	tun = rtnl_dereference(tfile->tun);
>  
>  	if (tun && !tfile->detached) {
>  		u16 index = tfile->queue_index;
>  		BUG_ON(index >= tun->numqueues);
> -		dev = tun->dev;
>  
>  		rcu_assign_pointer(tun->tfiles[index],
>  				   tun->tfiles[tun->numqueues - 1]);
> 
> 
Acked-by: Neil Horman <nhorman@...driver.com>
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