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

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.

-- 
Cheers,
Stephen Rothwell

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!