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: i386-debian-10.3 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # 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 ARCH=i386 

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

All warnings (new ones prefixed by >>):

>> drivers/acpi/apei/apei-base.c:453:5: warning: no previous prototype for 'remove_quirk_mcfg_res' [-Wmissing-prototypes]
     453 | int remove_quirk_mcfg_res(struct apei_resources *mcfg_res)
         |     ^~~~~~~~~~~~~~~~~~~~~
   drivers/acpi/apei/apei-base.c:804:12: warning: no previous prototype for 'arch_apei_enable_cmcff' [-Wmissing-prototypes]
     804 | int __weak arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr,
         |            ^~~~~~~~~~~~~~~~~~~~~~
   drivers/acpi/apei/apei-base.c:811:13: warning: no previous prototype for 'arch_apei_report_mem_error' [-Wmissing-prototypes]
     811 | void __weak arch_apei_report_mem_error(int sev,
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/remove_quirk_mcfg_res +453 drivers/acpi/apei/apei-base.c

   451	
   452	#ifdef CONFIG_PCI
 > 453	int remove_quirk_mcfg_res(struct apei_resources *mcfg_res)
   454	{
   455	#ifdef CONFIG_PCI_QUIRKS
   456		int rc = 0;
   457		struct apei_resources quirk_res;
   458	
   459		apei_resources_init(&quirk_res);
   460		rc = apei_res_add(&quirk_res.iomem, pci_quirk_mcfg_res.start,
   461			resource_size(&pci_quirk_mcfg_res));
   462		if (rc)
   463			return rc;
   464	
   465		return apei_resources_sub(mcfg_res, &quirk_res);
   466	#else
   467		return 0;
   468	#endif
   469	}
   470	extern struct list_head pci_mmcfg_list;
   471	static int apei_filter_mcfg_addr(struct apei_resources *res,
   472				struct apei_resources *mcfg_res)
   473	{
   474		int rc = 0;
   475		struct pci_mmcfg_region *cfg;
   476	
   477		if (list_empty(&pci_mmcfg_list))
   478			return 0;
   479	
   480		apei_resources_init(mcfg_res);
   481		list_for_each_entry(cfg, &pci_mmcfg_list, list) {
   482			rc = apei_res_add(&mcfg_res->iomem, cfg->res.start,
   483					resource_size(&cfg->res));
   484			if (rc)
   485				return rc;
   486		}
   487	
   488		/* remove the pci quirk mcfg resource if any from the mcfg_res */
   489		rc = remove_quirk_mcfg_res(mcfg_res);
   490		if (rc)
   491			return rc;
   492	
   493		/* filter the mcfg resource from current APEI's */
   494		return apei_resources_sub(res, mcfg_res);
   495	}
   496	#else
   497	static inline int apei_filter_mcfg_addr(struct apei_resources *res,
   498				struct apei_resources *mcfg_res)
   499	{
   500		return 0;
   501	}
   502	#endif
   503	

---
0-DAY CI Kernel Test Service, Intel Corporation
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