Re: [PATCH net-next 01/14] ipvlan: Preparation to support mac-nat

[kernel test robot <lkp@intel.com>]

Hi Dmitry,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Dmitry-Skorodumov/ipvlan-Preparation-to-support-mac-nat/20251106-004449
base:   net-next/main
patch link:    https://lore.kernel.org/r/20251105161450.1730216-2-skorodumov.dmitry%40huawei.com
patch subject: [PATCH net-next 01/14] ipvlan: Preparation to support mac-nat
config: s390-randconfig-001-20251107 (https://download.01.org/0day-ci/archive/20251107/202511070917.SA9qQyy5-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251107/202511070917.SA9qQyy5-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511070917.SA9qQyy5-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/ipvlan/ipvlan_core.c:435:13: warning: 'is_ipv6_usable' defined but not used [-Wunused-function]
    static bool is_ipv6_usable(const struct in6_addr *addr)
                ^~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for OF_GPIO
   Depends on [n]: GPIOLIB [=y] && OF [=y] && HAS_IOMEM [=n]
   Selected by [m]:
   - REGULATOR_RT5133 [=m] && REGULATOR [=y] && I2C [=m] && GPIOLIB [=y] && OF [=y]


vim +/is_ipv6_usable +435 drivers/net/ipvlan/ipvlan_core.c

   434	
 > 435	static bool is_ipv6_usable(const struct in6_addr *addr)
   436	{
   437		return !ipv6_addr_is_multicast(addr) && !ipv6_addr_loopback(addr) &&
   438		       !ipv6_addr_any(addr);
   439	}
   440	

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