Hi Mario, kernel test robot noticed the following build warnings: [auto build test WARNING on 7124d7671af0facf115d70f9d1fadde0d768d325] url: https://github.com/intel-lab-lkp/linux/commits/Mario-Limonciello/ACPI-x86-Separate-out-the-Microsoft-_DSM-function-calls/20230421-001547 base: 7124d7671af0facf115d70f9d1fadde0d768d325 patch link: https://lore.kernel.org/r/20230420160923.14127-1-mario.limonciello%40amd.com patch subject: [PATCH] ACPI: x86: Separate out the Microsoft _DSM function calls config: i386-randconfig-a002-20230424 (https://download.01.org/0day-ci/archive/20230424/202304242025.fz8SDA8d-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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/e4ea0d2f15f2d0486bc3b4f59cbf9cea6c63fda1 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Mario-Limonciello/ACPI-x86-Separate-out-the-Microsoft-_DSM-function-calls/20230421-001547 git checkout e4ea0d2f15f2d0486bc3b4f59cbf9cea6c63fda1 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/acpi/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304242025.fz8SDA8d-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/acpi/x86/s2idle.c:552:6: warning: no previous prototype for function 'lps0_s2idle_wake' [-Wmissing-prototypes] bool lps0_s2idle_wake(void) ^ drivers/acpi/x86/s2idle.c:552:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool lps0_s2idle_wake(void) ^ static 1 warning generated. vim +/lps0_s2idle_wake +552 drivers/acpi/x86/s2idle.c 551 > 552 bool lps0_s2idle_wake(void) 553 { 554 if (!lps0_device_handle || sleep_no_lps0) 555 goto out; 556 557 /* avoid running on the first go through the s2idle loop */ 558 if (lps0_dsm_func_mask_microsoft > 0) { 559 int target; 560 561 if (lps0_dsm_state == ACPI_LPS0_ENTRY || 562 lps0_dsm_state == ACPI_LPS0_MS_EXIT) 563 target = ACPI_LPS0_MS_ENTRY; 564 else 565 target = ACPI_LPS0_MS_EXIT; 566 acpi_sleep_run_lps0_dsm(target, 567 lps0_dsm_func_mask_microsoft, 568 lps0_dsm_guid_microsoft); 569 } 570 out: 571 return acpi_s2idle_wake(); 572 } 573 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
