Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on pm/linux-next] [also build test WARNING on linus/master next-20200207] [cannot apply to tip/sched/core linux/master v5.5] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/lukasz-luba-arm-com/Add-support-for-devices-in-the-Energy-Model/20200208-123516 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: sparc-allyesconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.5.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag Reported-by: kbuild test robot All warnings (new ones prefixed by >>): In file included from include/linux/devfreq_cooling.h:21:0, from drivers/thermal/devfreq_cooling.c:14: drivers/thermal/devfreq_cooling.c: In function 'freq_get_state': >> include/linux/thermal.h:24:32: warning: overflow in implicit constant conversion [-Woverflow] #define THERMAL_CSTATE_INVALID -1UL ^ >> drivers/thermal/devfreq_cooling.c:207:9: note: in expansion of macro 'THERMAL_CSTATE_INVALID' return THERMAL_CSTATE_INVALID; ^~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/devfreq_cooling.h:21:0, from drivers//thermal/devfreq_cooling.c:14: drivers//thermal/devfreq_cooling.c: In function 'freq_get_state': >> include/linux/thermal.h:24:32: warning: overflow in implicit constant conversion [-Woverflow] #define THERMAL_CSTATE_INVALID -1UL ^ drivers//thermal/devfreq_cooling.c:207:9: note: in expansion of macro 'THERMAL_CSTATE_INVALID' return THERMAL_CSTATE_INVALID; ^~~~~~~~~~~~~~~~~~~~~~ vim +24 include/linux/thermal.h 23064088d6aea04 Durgadoss R 2012-09-18 22 57df8106932b574 Zhang Rui 2013-02-08 23 /* invalid cooling state */ 57df8106932b574 Zhang Rui 2013-02-08 @24 #define THERMAL_CSTATE_INVALID -1UL 57df8106932b574 Zhang Rui 2013-02-08 25 :::::: The code at line 24 was first introduced by commit :::::: 57df8106932b57427df1eaaa13871857f75b1194 Thermal: exynos: fix cooling state translation :::::: TO: Zhang Rui :::::: CC: Zhang Rui --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org