Hi Abhijeet, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.17-rc3 next-20220211] [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] url: https://github.com/0day-ci/linux/commits/Abhijeet-V/asus-wmi-Keyboard-rgb... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f1baf68e1383f6ed93eb9cff2866d46562607a43 config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20220213/202202130255.uwrbJQfB-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f6685f774697c85d6a352dcea013f46a99f9fe31) 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/860e9e7427b00b9dbd0c35851cecda00b... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Abhijeet-V/asus-wmi-Keyboard-rgb-led-multicolor-support/20220212-040427 git checkout 860e9e7427b00b9dbd0c35851cecda00be1968f2 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/platform/x86/ 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 >>): int kbd_led_classdev_init(struct asus_wmi *asus, int brightness) ^ drivers/platform/x86/asus-wmi.c:958:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int kbd_led_classdev_init(struct asus_wmi *asus, int brightness) ^ static 1 warning generated. vim +/kbd_led_classdev_init +958 drivers/platform/x86/asus-wmi.c 957 959 { 960 int rv; 961 962 asus->kbd_led_wk = brightness; 963 asus->kbd_led_mc.led_cdev.name = "asus::kbd_backlight"; 964 asus->kbd_led_mc.led_cdev.flags = LED_BRIGHT_HW_CHANGED; 965 asus->kbd_led_mc.led_cdev.brightness_set = kbd_led_brightness_set; 966 asus->kbd_led_mc.led_cdev.brightness_get = kbd_led_brightness_get; 967 asus->kbd_led_mc.led_cdev.max_brightness = 3; 968 969 asus->kbd_led_mc.num_colors = ASUS_KBD_SUBLED_COUNT; 970 971 rv = led_classdev_multicolor_register(&asus->platform_device->dev, 972 &asus->kbd_led_mc); 973 return rv; 974 } 975 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org