Re: [RFC KERNEL PATCH v3 2/3] xen/pvh: Setup gsi and map pirq for passthrough device

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

Hi Jiqian,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build warnings:

[auto build test WARNING on xen-tip/linux-next]
[also build test WARNING on pci/next pci/for-linus tip/x86/core rafael-pm/linux-next rafael-pm/acpi-bus rafael-pm/devprop linus/master v6.7-rc5 next-20231212]
[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/Jiqian-Chen/xen-pci-Add-xen_reset_device_state-function/20231211-001811
base:   https://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git linux-next
patch link:    https://lore.kernel.org/r/20231210161519.1550860-3-Jiqian.Chen%40amd.com
patch subject: [RFC KERNEL PATCH v3 2/3] xen/pvh: Setup gsi and map pirq for passthrough device
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20231212/202312122002.7spZXyWU-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231212/202312122002.7spZXyWU-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/202312122002.7spZXyWU-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/xen/enlighten_pvh.c:113:5: warning: no previous prototype for function 'xen_pvh_passthrough_gsi' [-Wmissing-prototypes]
   int xen_pvh_passthrough_gsi(struct pci_dev *dev)
       ^
   arch/x86/xen/enlighten_pvh.c:113:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int xen_pvh_passthrough_gsi(struct pci_dev *dev)
   ^
   static 
   1 warning generated.


vim +/xen_pvh_passthrough_gsi +113 arch/x86/xen/enlighten_pvh.c

   112	
 > 113	int xen_pvh_passthrough_gsi(struct pci_dev *dev)
   114	{
   115		int ret;
   116		gsi_info_t gsi_info;
   117	
   118		if (!dev)
   119			return -EINVAL;
   120	
   121		ret = xen_pvh_get_gsi_info(dev, &gsi_info);
   122		if (ret) {
   123			xen_raw_printk("Fail to get gsi info!\n");
   124			return ret;
   125		}
   126	
   127		ret = xen_pvh_setup_gsi(&gsi_info);
   128		if (ret == -EEXIST) {
   129			ret = 0;
   130			xen_raw_printk("Already setup the GSI :%u\n", gsi_info.gsi);
   131		} else if (ret) {
   132			xen_raw_printk("Fail to setup gsi (%d)!\n", gsi_info.gsi);
   133			return ret;
   134		}
   135	
   136		ret = xen_pvh_map_pirq(&gsi_info);
   137		if (ret)
   138			xen_raw_printk("Fail to map pirq for gsi (%d)!\n", gsi_info.gsi);
   139	
   140		return ret;
   141	}
   142	EXPORT_SYMBOL_GPL(xen_pvh_passthrough_gsi);
   143	

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