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

From: Nikolay Borisov <[email-masked]>
Date: Mon, 15 Feb 2016 10:01:13 +0200

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!