netdev - Re: [PATCH net-next v3 5/6] net: ngbe: add sriov function support

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Message-ID: <202405160844.t8jS88dy-lkp@intel.com>
Date: Thu, 16 May 2024 08:46:27 +0800
From: kernel test robot <lkp@...el.com>
To: Mengyuan Lou <mengyuanlou@...-swift.com>, netdev@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	jiawenwu@...stnetic.com, duanqiangwen@...-swift.com,
	Mengyuan Lou <mengyuanlou@...-swift.com>
Subject: Re: [PATCH net-next v3 5/6] net: ngbe: add sriov function support

Hi Mengyuan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Mengyuan-Lou/net-libwx-Add-sriov-api-for-wangxun-nics/20240515-185015
base:   net-next/main
patch link:    https://lore.kernel.org/r/15515521993762EE%2B20240515100830.32920-6-mengyuanlou%40net-swift.com
patch subject: [PATCH net-next v3 5/6] net: ngbe: add sriov function support
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240516/202405160844.t8jS88dy-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/20240516/202405160844.t8jS88dy-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405160844.t8jS88dy-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/wangxun/libwx/wx_sriov.c:999:17: warning: variable 'i' is uninitialized when used here [-Wuninitialized]
     999 |         if (wx->vfinfo[i].clear_to_send)
         |                        ^
   drivers/net/ethernet/wangxun/libwx/wx_sriov.c:992:7: note: initialize the variable 'i' to silence this warning
     992 |         u16 i;
         |              ^
         |               = 0
   drivers/net/ethernet/wangxun/libwx/wx_sriov.c:312:20: warning: unused function 'wx_ping_vf' [-Wunused-function]
     312 | static inline void wx_ping_vf(struct wx *wx, int vf)
         |                    ^~~~~~~~~~
   2 warnings generated.


vim +/i +999 drivers/net/ethernet/wangxun/libwx/wx_sriov.c

   988	
   989	void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up)
   990	{
   991		u32 msgbuf[2] = {0, 0};
   992		u16 i;
   993	
   994		if (!wx->num_vfs)
   995			return;
   996		msgbuf[0] = WX_PF_NOFITY_VF_LINK_STATUS | WX_PF_CONTROL_MSG;
   997		if (link_up)
   998			msgbuf[1] = (wx->speed << 1) | link_up;
 > 999		if (wx->vfinfo[i].clear_to_send)

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