Re: [PATCH v2 05/13] PCI: endpoint: Assign PCI domain number for endpoint controllers

[Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>]

On Thu, Jul 18, 2024 at 11:04:04PM +0800, kernel test robot wrote:
> Hi Manivannan,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on 91e3b24eb7d297d9d99030800ed96944b8652eaf]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Manivannan-Sadhasivam-via-B4-Relay/PCI-qcom-ep-Drop-the-redundant-masking-of-global-IRQ-events/20240718-010848
> base:   91e3b24eb7d297d9d99030800ed96944b8652eaf
> patch link:    https://lore.kernel.org/r/20240717-pci-qcom-hotplug-v2-5-71d304b817f8%40linaro.org
> patch subject: [PATCH v2 05/13] PCI: endpoint: Assign PCI domain number for endpoint controllers
> config: i386-buildonly-randconfig-004-20240718 (https://download.01.org/0day-ci/archive/20240718/202407182239.m0d1pKRB-lkp@intel.com/config)
> compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240718/202407182239.m0d1pKRB-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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202407182239.m0d1pKRB-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> drivers/pci/endpoint/pci-epc-core.c:843:3: error: call to undeclared function 'pci_bus_release_domain_nr'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>      843 |                 pci_bus_release_domain_nr(NULL, &epc->dev);
>          |                 ^

Hmm, should've used #ifdef as compiler can still access the statements under
'if(IS_ENABLED())' condition.

- Mani

>    drivers/pci/endpoint/pci-epc-core.c:843:3: note: did you mean 'pci_bus_release_busn_res'?
>    include/linux/pci.h:1142:6: note: 'pci_bus_release_busn_res' declared here
>     1142 | void pci_bus_release_busn_res(struct pci_bus *b);
>          |      ^
>    drivers/pci/endpoint/pci-epc-core.c:911:20: error: call to undeclared function 'pci_bus_find_domain_nr'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>      911 |                 epc->domain_nr = pci_bus_find_domain_nr(NULL, dev);
>          |                                  ^
>    2 errors generated.
> 
> 
> vim +/pci_bus_release_domain_nr +843 drivers/pci/endpoint/pci-epc-core.c
> 
>    830	
>    831	/**
>    832	 * pci_epc_destroy() - destroy the EPC device
>    833	 * @epc: the EPC device that has to be destroyed
>    834	 *
>    835	 * Invoke to destroy the PCI EPC device
>    836	 */
>    837	void pci_epc_destroy(struct pci_epc *epc)
>    838	{
>    839		pci_ep_cfs_remove_epc_group(epc->group);
>    840		device_unregister(&epc->dev);
>    841	
>    842		if (IS_ENABLED(CONFIG_PCI_DOMAINS_GENERIC))
>  > 843			pci_bus_release_domain_nr(NULL, &epc->dev);
>    844	}
>    845	EXPORT_SYMBOL_GPL(pci_epc_destroy);
>    846	
> 
> -- 
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki

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