tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git greybus head: 4b5f28cff45f83ee9e8b851f0e7ff5852ca13878 commit: f300b3468faf250e07e4fca31d0e82b2459d2d69 [1/2] staging: greybus: vibrator: use proper API for vibrator devices config: i386-randconfig-a013-20210720 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit... git remote add staging https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git git fetch --no-tags staging greybus git checkout f300b3468faf250e07e4fca31d0e82b2459d2d69 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash 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 >>): ld: drivers/staging/greybus/vibrator.o: in function `gb_vibrator_probe': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org