[kbuild-all] undefined reference to `led_classdev_unregister'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f40ddce88593482919761f74910f42f4b84c004b commit: 72cdab808714b1ec24b0c7bdebed163ce791f01f ath9k: Do not select MAC80211_LEDS by default date: 6 months ago config: parisc-randconfig-r002-20210218 (attached as .config) compiler: hppa64-linux-gcc (GCC) 9.3.0 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 72cdab808714b1ec24b0c7bdebed163ce791f01f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): hppa64-linux-ld: drivers/net/wireless/ath/ath9k/gpio.o: in function `.LC54': hppa64-linux-ld: drivers/net/wireless/ath/ath9k/gpio.o: in function `.LC64': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org