linux-kernel - Re: [PATCH v9 4/6] PCI: dwc: Use common PCI host bridge APIs for finding the capabilities

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Message-ID: <202504101228.CX8tAgfW-lkp@intel.com>
Date: Thu, 10 Apr 2025 14:02:23 +0800
From: kernel test robot <lkp@...el.com>
To: Hans Zhang <18255117159@....com>, lpieralisi@...nel.org,
	bhelgaas@...gle.com
Cc: oe-kbuild-all@...ts.linux.dev, kw@...ux.com,
	manivannan.sadhasivam@...aro.org, ilpo.jarvinen@...ux.intel.com,
	robh@...nel.org, jingoohan1@...il.com, thomas.richard@...tlin.com,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Hans Zhang <18255117159@....com>
Subject: Re: [PATCH v9 4/6] PCI: dwc: Use common PCI host bridge APIs for
 finding the capabilities

Hi Hans,

kernel test robot noticed the following build errors:

[auto build test ERROR on a24588245776dafc227243a01bfbeb8a59bafba9]

url:    https://github.com/intel-lab-lkp/linux/commits/Hans-Zhang/PCI-Introduce-generic-bus-config-read-helper-function/20250409-115839
base:   a24588245776dafc227243a01bfbeb8a59bafba9
patch link:    https://lore.kernel.org/r/20250409034156.92686-5-18255117159%40163.com
patch subject: [PATCH v9 4/6] PCI: dwc: Use common PCI host bridge APIs for finding the capabilities
config: arc-randconfig-001-20250410 (https://download.01.org/0day-ci/archive/20250410/202504101228.CX8tAgfW-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250410/202504101228.CX8tAgfW-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/202504101228.CX8tAgfW-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/pci/controller/dwc/pcie-designware.c: In function '__dw_pcie_find_vsec_capability':
>> drivers/pci/controller/dwc/pcie-designware.c:239:24: error: implicit declaration of function 'dw_pcie_find_next_ext_capability'; did you mean 'pci_find_next_ext_capability'? [-Wimplicit-function-declaration]
     239 |         while ((vsec = dw_pcie_find_next_ext_capability(pci, vsec,
         |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                        pci_find_next_ext_capability


vim +239 drivers/pci/controller/dwc/pcie-designware.c

5b0841fa653f6c Vidya Sagar  2019-08-13  229  
efaf16de43f599 Shradha Todi 2025-02-21  230  static u16 __dw_pcie_find_vsec_capability(struct dw_pcie *pci, u16 vendor_id,
efaf16de43f599 Shradha Todi 2025-02-21  231  					  u16 vsec_id)
efaf16de43f599 Shradha Todi 2025-02-21  232  {
efaf16de43f599 Shradha Todi 2025-02-21  233  	u16 vsec = 0;
efaf16de43f599 Shradha Todi 2025-02-21  234  	u32 header;
efaf16de43f599 Shradha Todi 2025-02-21  235  
efaf16de43f599 Shradha Todi 2025-02-21  236  	if (vendor_id != dw_pcie_readw_dbi(pci, PCI_VENDOR_ID))
efaf16de43f599 Shradha Todi 2025-02-21  237  		return 0;
efaf16de43f599 Shradha Todi 2025-02-21  238  
efaf16de43f599 Shradha Todi 2025-02-21 @239  	while ((vsec = dw_pcie_find_next_ext_capability(pci, vsec,
efaf16de43f599 Shradha Todi 2025-02-21  240  						       PCI_EXT_CAP_ID_VNDR))) {
efaf16de43f599 Shradha Todi 2025-02-21  241  		header = dw_pcie_readl_dbi(pci, vsec + PCI_VNDR_HEADER);
efaf16de43f599 Shradha Todi 2025-02-21  242  		if (PCI_VNDR_HEADER_ID(header) == vsec_id)
efaf16de43f599 Shradha Todi 2025-02-21  243  			return vsec;
efaf16de43f599 Shradha Todi 2025-02-21  244  	}
efaf16de43f599 Shradha Todi 2025-02-21  245  
efaf16de43f599 Shradha Todi 2025-02-21  246  	return 0;
efaf16de43f599 Shradha Todi 2025-02-21  247  }
efaf16de43f599 Shradha Todi 2025-02-21  248  

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