tree: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-mergewindow head: dab4b0e8c9a5a4edc406e6fc24030afeb348383d commit: dab4b0e8c9a5a4edc406e6fc24030afeb348383d [7/7] i2c: at91: remove #define CONFIG_PM config: riscv-randconfig-r022-20210810 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d39ebdae674c8efc84ebe8dc32716ec353220530) 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/wsa/linux.git/commit/?id=... git remote add wsa https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git git fetch --no-tags wsa i2c/for-mergewindow git checkout dab4b0e8c9a5a4edc406e6fc24030afeb348383d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): static const struct dev_pm_ops at91_twi_pm = { ^ 1 warning generated. vim +/at91_twi_pm +336 drivers/i2c/busses/i2c-at91-core.c ad7d142f8951ce Juergen Fitschen 2019-02-22 335 ad7d142f8951ce Juergen Fitschen 2019-02-22 @336 static const struct dev_pm_ops at91_twi_pm = { ad7d142f8951ce Juergen Fitschen 2019-02-22 337 .suspend_noirq = at91_twi_suspend_noirq, ad7d142f8951ce Juergen Fitschen 2019-02-22 338 .resume_noirq = at91_twi_resume_noirq, ad7d142f8951ce Juergen Fitschen 2019-02-22 339 .runtime_suspend = at91_twi_runtime_suspend, ad7d142f8951ce Juergen Fitschen 2019-02-22 340 .runtime_resume = at91_twi_runtime_resume, ad7d142f8951ce Juergen Fitschen 2019-02-22 341 }; ad7d142f8951ce Juergen Fitschen 2019-02-22 342 :::::: The code at line 336 was first introduced by commit :::::: ad7d142f8951ce00e0366ba54bfaf8ab086eb4b9 i2c: at91: split driver into core and master file :::::: TO: Juergen Fitschen <me(a)jue.yt&gt; :::::: CC: Wolfram Sang <wsa(a)the-dreams.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org