Hi JafarAkhondali, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.14-rc5 next-20210810] [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/JafarAkhondali/platform-x86-acer... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9e723c5380c6e14fb91a8b6950563d040674afdb config: x86_64-randconfig-c001-20210810 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d39ebdae674c8efc84ebe8dc32716ec353220530) 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/c3ff29407b252eec4ee917d22c3776858... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review JafarAkhondali/platform-x86-acer-wmi-Add-Turbo-Mode-support-for-Acer-PH315-53/20210811-074352 git checkout c3ff29407b252eec4ee917d22c3776858234f328 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): gpu_fan_config2 |= 1; ^~~~~~~~~~~~~~~ drivers/platform/x86/acer-wmi.c:1703:55: note: initialize the variable 'gpu_fan_config2' to silence this warning u64 turbo_led_state, gpu_fan_config1, gpu_fan_config2; ^ = 0 gpu_fan_config1 |= 1; ^~~~~~~~~~~~~~~ drivers/platform/x86/acer-wmi.c:1703:38: note: initialize the variable 'gpu_fan_config1' to silence this warning u64 turbo_led_state, gpu_fan_config1, gpu_fan_config2; ^ = 0 2 warnings generated. vim +/gpu_fan_config2 +1715 drivers/platform/x86/acer-wmi.c 1696 1697 /* 1698 * Predator series turbo button 1699 */ 1700 static int acer_toggle_turbo(void) 1701 { 1702 /* Get current state from turbo button */ 1703 u64 turbo_led_state, gpu_fan_config1, gpu_fan_config2; 1704 u8 i; 1705 1706 if (ACPI_FAILURE(WMID_gaming_get_u64(&turbo_led_state, ACER_CAP_TURBO_LED))) 1707 return -1; 1708 1709 if (turbo_led_state) { 1710 // turns off turbo led 1711 WMID_gaming_set_u64(0x1, ACER_CAP_TURBO_LED); 1712 1713 // set FAN mode to auto 1714 if (quirks->cpu_fans > 0) 1716 for (i = 0; i < (quirks->cpu_fans + quirks->gpu_fans); ++i) 1717 gpu_fan_config2 |= 1 << (i + 1); 1718 for (i = 0; i < quirks->gpu_fans; ++i) 1719 gpu_fan_config2 |= 1 << (i + 3); 1720 if (quirks->cpu_fans > 0) 1722 for (i = 0; i < (quirks->cpu_fans + quirks->gpu_fans); ++i) 1723 gpu_fan_config1 |= 1 << (2 * i + 2); 1724 for (i = 0; i < quirks->gpu_fans; ++i) 1725 gpu_fan_config1 |= 1 << (2 * i + 6); 1726 WMID_gaming_set_u64(gpu_fan_config2 | gpu_fan_config1 << 16, ACER_CAP_TURBO_FAN); 1727 1728 // set OC to normal 1729 WMID_gaming_set_u64(0x5, ACER_CAP_TURBO_OC); 1730 WMID_gaming_set_u64(0x7, ACER_CAP_TURBO_OC); 1731 } else { 1732 // turn on turbo led 1733 WMID_gaming_set_u64(0x10001, ACER_CAP_TURBO_LED); 1734 1735 // set FAN to turbo mode 1736 if (quirks->cpu_fans > 0) 1737 gpu_fan_config2 |= 1; 1738 for (i = 0; i < (quirks->cpu_fans + quirks->gpu_fans); ++i) 1739 gpu_fan_config2 |= 1 << (i + 1); 1740 for (i = 0; i < quirks->gpu_fans; ++i) 1741 gpu_fan_config2 |= 1 << (i + 3); 1742 if (quirks->cpu_fans > 0) 1743 gpu_fan_config1 |= 2; 1744 for (i = 0; i < (quirks->cpu_fans + quirks->gpu_fans); ++i) 1745 gpu_fan_config1 |= 2 << (2 * i + 2); 1746 for (i = 0; i < quirks->gpu_fans; ++i) 1747 gpu_fan_config1 |= 2 << (2 * i + 6); 1748 WMID_gaming_set_u64(gpu_fan_config2 | gpu_fan_config1 << 16, ACER_CAP_TURBO_FAN); 1749 1750 // set OC to turbo mode 1751 WMID_gaming_set_u64(0x205, ACER_CAP_TURBO_OC); 1752 WMID_gaming_set_u64(0x207, ACER_CAP_TURBO_OC); 1753 } 1754 return turbo_led_state; 1755 } 1756 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org