Hi Tom,

[auto build test results on next-20150929 -- if it's inappropriate base, please 
ignore]

config: xtensa-allyesconfig (attached as .config)
reproduce:
  wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout c505336670b5c681c0a36053a68591e0f9074245
  # save the attached .config to linux build tree
  make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   net/ipv6/ila/ila_xlat.c: In function 'ila_xlat_fini':
>> net/ipv6/ila/ila_xlat.c:636:6: warning: unused variable 'i' 
>> [-Wunused-variable]
     int i;
         ^

vim +/i +636 net/ipv6/ila/ila_xlat.c

   620                                              ila_nl_ops);
   621          if (ret < 0)
   622                  goto unregister;
   623  
   624          xfrm6_xlat_addr_add(&ila_xlat);
   625  
   626          return 0;
   627  
   628  unregister:
   629          unregister_pernet_device(&ila_net_ops);
   630  exit:
   631          return ret;
   632  }
   633  
   634  void ila_xlat_fini(void)
   635  {
 > 636          int i;
   637  
   638          xfrm6_xlat_addr_del(&ila_xlat);
   639          genl_unregister_family(&ila_nl_family);
   640          unregister_pernet_device(&ila_net_ops);
   641  }
   642  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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