linux-kernel - Re: [PATCH v2] PCI: endpoint: Implement capability search using PCI core APIs

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Message-ID: <202508261929.5s2blqmA-lkp@intel.com>
Date: Tue, 26 Aug 2025 19:58:02 +0800
From: kernel test robot <lkp@...el.com>
To: Hans Zhang <18255117159@....com>, lpieralisi@...nel.org,
	kwilczynski@...nel.org, bhelgaas@...gle.com, helgaas@...nel.org,
	jingoohan1@...il.com, mani@...nel.org
Cc: oe-kbuild-all@...ts.linux.dev, robh@...nel.org,
	ilpo.jarvinen@...ux.intel.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, Hans Zhang <18255117159@....com>
Subject: Re: [PATCH v2] PCI: endpoint: Implement capability search using PCI
 core APIs

Hi Hans,

kernel test robot noticed the following build errors:

[auto build test ERROR on 8742b2d8935f476449ef37e263bc4da3295c7b58]

url:    https://github.com/intel-lab-lkp/linux/commits/Hans-Zhang/PCI-endpoint-Implement-capability-search-using-PCI-core-APIs/20250819-231353
base:   8742b2d8935f476449ef37e263bc4da3295c7b58
patch link:    https://lore.kernel.org/r/20250819145828.438541-1-18255117159%40163.com
patch subject: [PATCH v2] PCI: endpoint: Implement capability search using PCI core APIs
config: x86_64-randconfig-002-20250826 (https://download.01.org/0day-ci/archive/20250826/202508261929.5s2blqmA-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250826/202508261929.5s2blqmA-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508261929.5s2blqmA-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   drivers/pci/controller/dwc/pcie-designware-ep.c: In function 'dw_pcie_ep_find_capability':
>> drivers/pci/controller/dwc/pcie-designware-ep.c:74:16: error: implicit declaration of function 'PCI_FIND_NEXT_CAP' [-Werror=implicit-function-declaration]
      74 |         return PCI_FIND_NEXT_CAP(dw_pcie_ep_read_cfg, PCI_CAPABILITY_LIST,
         |                ^~~~~~~~~~~~~~~~~
>> drivers/pci/controller/dwc/pcie-designware-ep.c:74:34: error: 'dw_pcie_ep_read_cfg' undeclared (first use in this function); did you mean 'dw_pcie_ep_read_dbi'?
      74 |         return PCI_FIND_NEXT_CAP(dw_pcie_ep_read_cfg, PCI_CAPABILITY_LIST,
         |                                  ^~~~~~~~~~~~~~~~~~~
         |                                  dw_pcie_ep_read_dbi
   drivers/pci/controller/dwc/pcie-designware-ep.c:74:34: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/pci/controller/dwc/pcie-designware-ep.c:76:1: warning: control reaches end of non-void function [-Wreturn-type]
      76 | }
         | ^
   cc1: some warnings being treated as errors


vim +/PCI_FIND_NEXT_CAP +74 drivers/pci/controller/dwc/pcie-designware-ep.c

    71	
    72	static u8 dw_pcie_ep_find_capability(struct dw_pcie_ep *ep, u8 func_no, u8 cap)
    73	{
  > 74		return PCI_FIND_NEXT_CAP(dw_pcie_ep_read_cfg, PCI_CAPABILITY_LIST,
    75					 cap, ep, func_no);
  > 76	}
    77	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki