Hi Calvin,

[auto build test ERROR on net-next/master]
[also build test ERROR on v4.4-rc6 next-20151223]

url:    https://github.com/0day-ci/linux/commits/Calvin-Owens/vxlan-Properly-depend-on-ipv6-and-revert-to-module_init/20151224-070557
config: i386-randconfig-b0-12241357 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/linkage.h:4:0,
                    from include/linux/kernel.h:6,
                    from drivers/net/vxlan.c:13:
   drivers/net/vxlan.c: In function 'vxlan_create_sock':
>> drivers/net/vxlan.c:2661:8: error: implicit declaration of function 'vxlan_ipv6_is_loaded' [-Werror=implicit-function-declaration]
      if (!vxlan_ipv6_is_loaded())
           ^
   include/linux/compiler.h:147:28: note: in definition of macro '__trace_if'
     if (__builtin_constant_p((cond)) ? !!(cond) :   \
                               ^
>> drivers/net/vxlan.c:2661:3: note: in expansion of macro 'if'
      if (!vxlan_ipv6_is_loaded())
      ^
   cc1: some warnings being treated as errors

vim +/vxlan_ipv6_is_loaded +2661 drivers/net/vxlan.c

  2655		struct udp_port_cfg udp_conf;
  2656		int err;
  2657	
  2658		memset(&udp_conf, 0, sizeof(udp_conf));
  2659	
  2660		if (ipv6) {
> 2661			if (!vxlan_ipv6_is_loaded())
  2662				return ERR_PTR(-EAFNOSUPPORT);
  2663	
  2664			udp_conf.family = AF_INET6;

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0-DAY kernel test infrastructure                Open Source Technology Center
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