Hi Köry, I love your patch! Yet something to improve: [auto build test ERROR on v6.2] [also build test ERROR on next-20230303] [cannot apply to net/master net-next/master horms-ipvs/master linus/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/K-ry-Maincent/net-ethtool-Refactor-identical-get_ts_info-implementations/20230304-004527 patch link: https://lore.kernel.org/r/20230303164248.499286-4-kory.maincent%40bootlin.com patch subject: [PATCH v2 3/4] net: Let the active time stamping layer be selectable. config: csky-defconfig (https://download.01.org/0day-ci/archive/20230304/202303041027.GxlLyldN-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 12.1.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/00a0656f9b222cfeb7c1253a4a2771b1f63b5c9b git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review K-ry-Maincent/net-ethtool-Refactor-identical-get_ts_info-implementations/20230304-004527 git checkout 00a0656f9b222cfeb7c1253a4a2771b1f63b5c9b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=csky olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303041027.GxlLyldN-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): csky-linux-ld: net/core/dev_ioctl.o: in function `dev_ifsioc': >> dev_ioctl.c:(.text+0x292): undefined reference to `phy_mii_ioctl' >> csky-linux-ld: dev_ioctl.c:(.text+0x370): undefined reference to `phy_do_ioctl' >> csky-linux-ld: dev_ioctl.c:(.text+0x374): undefined reference to `phy_mii_ioctl' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests