Re: [PATCH v3 1/4] PCI: Add debugfs support for exposing PTM context

[kernel test robot <lkp@intel.com>]

Hi Manivannan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 0af2f6be1b4281385b618cb86ad946eded089ac8]

url:    https://github.com/intel-lab-lkp/linux/commits/Manivannan-Sadhasivam/PCI-Add-debugfs-support-for-exposing-PTM-context/20250425-001237
base:   0af2f6be1b4281385b618cb86ad946eded089ac8
patch link:    https://lore.kernel.org/r/20250424-pcie-ptm-v3-1-c929ebd2821c%40linaro.org
patch subject: [PATCH v3 1/4] PCI: Add debugfs support for exposing PTM context
config: riscv-randconfig-001-20250425 (https://download.01.org/0day-ci/archive/20250426/202504260126.wxQ1Dp0M-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250426/202504260126.wxQ1Dp0M-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/202504260126.wxQ1Dp0M-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/pci/pci-pf-stub.c:10:
   include/linux/pci.h: In function 'pcie_ptm_create_debugfs':
>> include/linux/pci.h:1911:39: warning: no return statement in function returning non-void [-Wreturn-type]
    1911 |                          const struct pcie_ptm_ops *ops) { }
         |                                       ^~~~~~~~~~~~


vim +1911 include/linux/pci.h

  1903	
  1904	#if IS_ENABLED(CONFIG_DEBUG_FS) && IS_ENABLED(CONFIG_PCIE_PTM)
  1905	struct pci_ptm_debugfs *pcie_ptm_create_debugfs(struct device *dev, void *pdata,
  1906							const struct pcie_ptm_ops *ops);
  1907	void pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs);
  1908	#else
  1909	static inline struct pci_ptm_debugfs
  1910	*pcie_ptm_create_debugfs(struct device *dev, void *pdata,
> 1911				 const struct pcie_ptm_ops *ops) { }
  1912	static inline void
  1913	pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs) { }
  1914	#endif
  1915	

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