Hi Xuesong,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on helgaas-pci/next]
[also build test WARNING on rafael-pm/linux-next tip/x86/core arm64/for-next/core v5.15-rc7 next-20211027]
[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/Xuesong-Chen/PCI-MCFG-Consolidate-the-separate-PCI-MCFG-table-entry-list/20211027-171229
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: x86_64-randconfig-s022-20211027 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/0day-ci/linux/commit/8fce66d9da6f8e55c5cf0dda4a13dba6bd51492d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Xuesong-Chen/PCI-MCFG-Consolidate-the-separate-PCI-MCFG-table-entry-list/20211027-171229
        git checkout 8fce66d9da6f8e55c5cf0dda4a13dba6bd51492d
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/acpi/apei/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/acpi/apei/apei-base.c:453:5: sparse: sparse: symbol 'remove_quirk_mcfg_res' was not declared. Should it be static?
   drivers/acpi/apei/apei-base.c:804:12: sparse: sparse: symbol 'arch_apei_enable_cmcff' was not declared. Should it be static?
   drivers/acpi/apei/apei-base.c:811:13: sparse: sparse: symbol 'arch_apei_report_mem_error' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org