netdev - Re: linux-next: build warning after merge of the net-next tree

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Date:	Mon, 15 Feb 2016 10:01:13 +0200
From:	Nikolay Borisov <kernel@...p.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>,
	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build warning after merge of the net-next tree



On 02/15/2016 04:09 AM, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the net-next tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> net/ipv4/igmp.c: In function 'igmp_group_added':
> net/ipv4/igmp.c:1227:14: warning: unused variable 'net' [-Wunused-variable]
>   struct net *net = dev_net(in_dev->dev);
>               ^
> net/ipv4/igmp.c: In function 'ip_mc_inc_group':
> net/ipv4/igmp.c:1319:14: warning: unused variable 'net' [-Wunused-variable]
>   struct net *net = dev_net(in_dev->dev);
>               ^
> net/ipv4/igmp.c: In function 'ip_mc_init_dev':
> net/ipv4/igmp.c:1646:14: warning: unused variable 'net' [-Wunused-variable]
>   struct net *net = dev_net(in_dev->dev);
>               ^
> net/ipv4/igmp.c: In function 'ip_mc_up':
> net/ipv4/igmp.c:1665:14: warning: unused variable 'net' [-Wunused-variable]
>   struct net *net = dev_net(in_dev->dev);
>               ^
> 
> Introduced by commits
> 
>   87a8a2ae65b7 ("igmp: Namespaceify igmp_llm_reports sysctl knob")
>   165094afcee7 ("igmp: Namespacify igmp_qrv sysctl knob")
> 
> CONFIG_IP_MULTICAST is not set for this build.

Right, I have forgotten to add the ifdef guards for the respective
variables, will squeeze a patch in the next series on namespaceifying
various sysctls.

Thanks for testing!