Re: [net-next RFC PATCH v2 2/3] net: dsa: Add Airoha AN8855 5-Port Gigabit DSA Switch driver

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

Hi Christian,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Christian-Marangi/dt-bindings-net-dsa-Add-Airoha-AN8855-Gigabit-Switch-documentation/20241024-002325
base:   net-next/main
patch link:    https://lore.kernel.org/r/20241023161958.12056-3-ansuelsmth%40gmail.com
patch subject: [net-next RFC PATCH v2 2/3] net: dsa: Add Airoha AN8855 5-Port Gigabit DSA Switch driver
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20241027/202410271113.eownoD7D-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241027/202410271113.eownoD7D-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/202410271113.eownoD7D-lkp@intel.com/

All errors (new ones prefixed by >>):

   alpha-linux-ld: drivers/net/dsa/an8855.o: in function `an8855_port_vlan_add':
>> (.text+0x1d5c): undefined reference to `__ffsdi2'
>> alpha-linux-ld: (.text+0x1d8c): undefined reference to `__ffsdi2'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki