tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   469a89fd3bb73bb2eea628da2b3e0f695f80b7ce
commit: 35db41f8abc3cd3332daa8328f69680ecfbdb452 [1416/3037] virtio: vdpa: new SolidNET DPU driver.
config: riscv-randconfig-c042-20230106
compiler: riscv64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=35db41f8abc3cd3332daa8328f69680ecfbdb452
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 35db41f8abc3cd3332daa8328f69680ecfbdb452
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/vdpa/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/vdpa/solidrun/snet_main.c:12:
>> drivers/vdpa/solidrun/snet_vdpa.h:193:6: warning: no previous prototype for 'psnet_create_hwmon' [-Wmissing-prototypes]
     193 | void psnet_create_hwmon(struct pci_dev *pdev) {}
         |      ^~~~~~~~~~~~~~~~~~


vim +/psnet_create_hwmon +193 drivers/vdpa/solidrun/snet_vdpa.h

   189	
   190	#if IS_ENABLED(CONFIG_HWMON)
   191	void psnet_create_hwmon(struct pci_dev *pdev);
   192	#else
 > 193	void psnet_create_hwmon(struct pci_dev *pdev) {}
   194	#endif
   195	

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