Re: [PATCH] ACPI: x86: Separate out the Microsoft _DSM function calls

[kernel test robot <lkp@intel.com>]

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@intel.com/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@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304242025.fz8SDA8d-lkp@intel.com/

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