Re: [PATCH v1 5/6] vfio-pci/zdev: Perform platform specific function reset for zPCI

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

Hi Farhan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on awilliam-vfio/next]
[also build test WARNING on s390/features linus/master v6.17-rc1 next-20250813]
[cannot apply to kvms390/next awilliam-vfio/for-linus]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Farhan-Ali/s390-pci-Restore-airq-unconditionally-for-the-zPCI-device/20250814-012243
base:   https://github.com/awilliam/linux-vfio.git next
patch link:    https://lore.kernel.org/r/20250813170821.1115-6-alifm%40linux.ibm.com
patch subject: [PATCH v1 5/6] vfio-pci/zdev: Perform platform specific function reset for zPCI
config: i386-randconfig-005-20250814 (https://download.01.org/0day-ci/archive/20250814/202508141314.OUnmuib7-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250814/202508141314.OUnmuib7-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/202508141314.OUnmuib7-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/vfio/pci/vfio_pci_intrs.c:23:
>> drivers/vfio/pci/vfio_pci_priv.h:104:5: warning: no previous prototype for function 'vfio_pci_zdev_reset' [-Wmissing-prototypes]
     104 | int vfio_pci_zdev_reset(struct vfio_pci_core_device *vdev)
         |     ^
   drivers/vfio/pci/vfio_pci_priv.h:104:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     104 | int vfio_pci_zdev_reset(struct vfio_pci_core_device *vdev)
         | ^
         | static 
   1 warning generated.


vim +/vfio_pci_zdev_reset +104 drivers/vfio/pci/vfio_pci_priv.h

   101	
   102	static inline void vfio_pci_zdev_close_device(struct vfio_pci_core_device *vdev)
   103	{}
 > 104	int vfio_pci_zdev_reset(struct vfio_pci_core_device *vdev)
   105	{
   106		return -ENODEV;
   107	}
   108	#endif
   109	

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