Re: [PATCH v2] PCI/TPH: Fix get cpu steer-tag fail on ARM64 platform

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

Hi Chengwen,

kernel test robot noticed the following build warnings:

[auto build test WARNING on pci/next]
[also build test WARNING on pci/for-linus arm64/for-next/core tip/x86/core rafael-pm/linux-next rafael-pm/bleeding-edge linus/master v7.0-rc2 next-20260305]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Chengwen-Feng/PCI-TPH-Fix-get-cpu-steer-tag-fail-on-ARM64-platform/20260305-164057
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20260305083650.54611-1-fengchengwen%40huawei.com
patch subject: [PATCH v2] PCI/TPH: Fix get cpu steer-tag fail on ARM64 platform
config: x86_64-buildonly-randconfig-002-20260306 (https://download.01.org/0day-ci/archive/20260306/202603060433.2NbZmymR-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260306/202603060433.2NbZmymR-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603060433.2NbZmymR-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/common.c:2649:5: warning: no previous prototype for function 'acpi_get_cpu_acpi_id' [-Wmissing-prototypes]
    2649 | int acpi_get_cpu_acpi_id(unsigned int cpu)
         |     ^
   arch/x86/kernel/cpu/common.c:2649:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
    2649 | int acpi_get_cpu_acpi_id(unsigned int cpu)
         | ^
         | static 
   1 warning generated.


vim +/acpi_get_cpu_acpi_id +2649 arch/x86/kernel/cpu/common.c

  2648	
> 2649	int acpi_get_cpu_acpi_id(unsigned int cpu)

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