Hi "Nuno, I love your patch! Perhaps something to improve: [auto build test WARNING on dtor-input/next] [also build test WARNING on next-20220722] [cannot apply to brgl/gpio/for-next hid/for-next linus/master v5.19-rc7] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Nuno-S/adp5588-keys-refactor-and-fw-properties-support/20220721-160531 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220723/202207231228.n8l077iB-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 12fbd2d377e396ad61bce56d71c98a1eb1bebfa9) 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/intel-lab-lkp/linux/commit/357979f7c2525297178fb321c5793a4bd63dabb6 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Nuno-S/adp5588-keys-refactor-and-fw-properties-support/20220721-160531 git checkout 357979f7c2525297178fb321c5793a4bd63dabb6 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/input/keyboard/ drivers/platform/x86/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/input/keyboard/adp5588-keys.c:336:9: warning: implicit conversion from 'unsigned long' to 'int' changes value from 18446744073709551615 to -1 [-Wconstant-conversion] return INVALID_HWIRQ; ~~~~~~ ^~~~~~~~~~~~~ include/linux/irq.h:1245:24: note: expanded from macro 'INVALID_HWIRQ' #define INVALID_HWIRQ (~0UL) ^~~~ 1 warning generated. vim +336 drivers/input/keyboard/adp5588-keys.c 323 324 static int adp5588_gpiomap_get_hwirq(struct device *dev, const u8 *map, 325 unsigned int gpio, unsigned int ngpios) 326 { 327 unsigned int hwirq; 328 329 for (hwirq = 0; hwirq < ngpios; hwirq++) 330 if (map[hwirq] == gpio) 331 return hwirq; 332 333 /* should never happen */ 334 dev_warn_ratelimited(dev, "could not find the hwirq for gpio(%u)\n", gpio); 335 > 336 return INVALID_HWIRQ; 337 } 338 -- 0-DAY CI Kernel Test Service https://01.org/lkp