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':

quoted

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	

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