[rafael-pm:bleeding-edge 20/24] drivers/acpi/scan.c:2449:5: warning: no previous prototype for function 'acpi_bus_trim_one'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git bleeding-edge
head:   ef9088c776e0c49411bfb413ad43d110a9de1519
commit: e511ff6b4174fa81ca7ee16f8c17f7362c08fadf [20/24] ACPI: scan: Walk ACPI device's children using driver core
config: x86_64-randconfig-a013-20220620 (https://download.01.org/0day-ci/archive/20220621/202206211629.ncqadywd-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project af6d2a0b6825e71965f3e2701a63c239fa0ad70f)
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://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?id=e511ff6b4174fa81ca7ee16f8c17f7362c08fadf
        git remote add rafael-pm https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
        git fetch --no-tags rafael-pm bleeding-edge
        git checkout e511ff6b4174fa81ca7ee16f8c17f7362c08fadf
        # 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/acpi/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/acpi/scan.c:2449:5: warning: no previous prototype for function 'acpi_bus_trim_one' [-Wmissing-prototypes]
   int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
       ^
   drivers/acpi/scan.c:2449:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
   ^
   static 
   1 warning generated.


vim +/acpi_bus_trim_one +2449 drivers/acpi/scan.c

  2448	
> 2449	int acpi_bus_trim_one(struct acpi_device *adev, void *not_used)
  2450	{
  2451		struct acpi_scan_handler *handler = adev->handler;
  2452	
  2453		acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL);
  2454	
  2455		adev->flags.match_driver = false;
  2456		if (handler) {
  2457			if (handler->detach)
  2458				handler->detach(adev);
  2459	
  2460			adev->handler = NULL;
  2461		} else {
  2462			device_release_driver(&adev->dev);
  2463		}
  2464		/*
  2465		 * Most likely, the device is going away, so put it into D3cold before
  2466		 * that.
  2467		 */
  2468		acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
  2469		adev->flags.initialized = false;
  2470		acpi_device_clear_enumerated(adev);
  2471	
  2472		return 0;
  2473	}
  2474	

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