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

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Message-ID: <04d5380f-58fb-4146-a353-13c9f27f8af7@163.com>
Date: Tue, 26 Aug 2025 22:37:16 +0800
From: Hans Zhang <18255117159@....com>
To: kernel test robot <lkp@...el.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
Subject: Re: [PATCH v2] PCI: endpoint: Implement capability search using PCI
 core APIs

Hi，

Please ignore it because there is no problem compiling in this branch. 
And it depends on this series.

https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/log/?h=capability-search


Best regards,
Hans

On 2025/8/26 19:58, kernel test robot wrote:
> 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	
>