tree: https://github.com/0day-ci/linux/commits/UPDATE-20210510-214807/Hermann-L... head: 3da345dce6430016b047ab98cecf82f56c74f2e8 commit: 3da345dce6430016b047ab98cecf82f56c74f2e8 power: supply: axp20x_battery: implement writeable status to enable/disable battery charging date: 3 hours ago config: m68k-randconfig-r026-20210510 (attached as .config) compiler: m68k-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://github.com/0day-ci/linux/commit/3da345dce6430016b047ab98cecf82f56... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20210510-214807/Hermann-Lauer-uni-heidelberg-de/axp209-PMIC-setting-constant_charge_current-to-0-disables-battery-charging/20210421-171248 git checkout 3da345dce6430016b047ab98cecf82f56c74f2e8 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=m68k 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 >>): drivers/power/supply/axp20x_battery.c: In function 'axp20x_battery_set_prop': drivers/power/supply/axp20x_battery.c:473:3: warning: this statement may fall through [-Wimplicit-fallthrough=] 473 | switch (val->intval) { | ^~~~~~ drivers/power/supply/axp20x_battery.c:484:2: note: here 484 | default: | ^~~~~~~ In file included from include/linux/compiler_types.h:65, from <command-line>: 208 | # define fallthrough __attribute__((__fallthrough__)) | ^~~~~~~~~~~~~ drivers/power/supply/axp20x_battery.c:482:3: note: in expansion of macro 'fallthrough' 482 | fallthrough; | ^~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA Selected by - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC vim +/fallthrough +208 include/linux/compiler_attributes.h 294f69e662d157 Joe Perches 2019-10-05 196 294f69e662d157 Joe Perches 2019-10-05 197 /* 294f69e662d157 Joe Perches 2019-10-05 198 * Add the pseudo keyword 'fallthrough' so case statement blocks 294f69e662d157 Joe Perches 2019-10-05 199 * must end with any of these keywords: 294f69e662d157 Joe Perches 2019-10-05 200 * break; 294f69e662d157 Joe Perches 2019-10-05 201 * fallthrough; 294f69e662d157 Joe Perches 2019-10-05 202 * goto <label>; 294f69e662d157 Joe Perches 2019-10-05 203 * return [expression]; 294f69e662d157 Joe Perches 2019-10-05 204 * 294f69e662d157 Joe Perches 2019-10-05 205 * gcc: https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html#Statement-At... 294f69e662d157 Joe Perches 2019-10-05 206 */ 294f69e662d157 Joe Perches 2019-10-05 207 #if __has_attribute(__fallthrough__) 294f69e662d157 Joe Perches 2019-10-05 @208 # define fallthrough __attribute__((__fallthrough__)) 294f69e662d157 Joe Perches 2019-10-05 209 #else 294f69e662d157 Joe Perches 2019-10-05 210 # define fallthrough do {} while (0) /* fallthrough */ a3f8a30f3f0079 Miguel Ojeda 2018-08-30 211 #endif a3f8a30f3f0079 Miguel Ojeda 2018-08-30 212 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org