Hi Ben, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d2af0fa4bfa4ec29d03b449ccd43fee39501112d commit: c901a57e39db555ad7950fd61e1470cdecc8e654 [13293/13681] pwm: dwc: allow driver to be built with COMPILE_TEST config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20230221/202302210017.XT59WvsM-lkp@xxxxxxxxx/config) compiler: sh4-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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c901a57e39db555ad7950fd61e1470cdecc8e654 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout c901a57e39db555ad7950fd61e1470cdecc8e654 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sh olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash drivers/pwm/ 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/202302210017.XT59WvsM-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/pwm/pwm-dwc.c:314:1: warning: data definition has no type or storage class 314 | module_pci_driver(dwc_pwm_driver); | ^~~~~~~~~~~~~~~~~ >> drivers/pwm/pwm-dwc.c:314:1: error: type defaults to 'int' in declaration of 'module_pci_driver' [-Werror=implicit-int] drivers/pwm/pwm-dwc.c:314:1: warning: parameter names (without types) in function declaration drivers/pwm/pwm-dwc.c:304:26: warning: 'dwc_pwm_driver' defined but not used [-Wunused-variable] 304 | static struct pci_driver dwc_pwm_driver = { | ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +314 drivers/pwm/pwm-dwc.c 1ed2b3fca64516 Jarkko Nikula 2020-10-02 313 1ed2b3fca64516 Jarkko Nikula 2020-10-02 @314 module_pci_driver(dwc_pwm_driver); 1ed2b3fca64516 Jarkko Nikula 2020-10-02 315 :::::: The code at line 314 was first introduced by commit :::::: 1ed2b3fca64516d1b3503ef21929f3b5f4f41cc6 pwm: Add DesignWare PWM Controller Driver :::::: TO: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx> :::::: CC: Thierry Reding <thierry.reding@xxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
