Hi Haiyue,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on v5.12-rc2]
[also build test WARNING on next-20210315]
[cannot apply to tnguy-next-queue/dev-queue]
[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]

url:    https://github.com/0day-ci/linux/commits/Haiyue-Wang/Enable-Intel-VF-flow-director-with-DDP/20210309-112812
base:    a38fd8748464831584a19438cbb3082b5a2dab15
config: powerpc-randconfig-r023-20210315 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a28facba1ccdc957f386b7753f4958307f1bfde8)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/0day-ci/linux/commit/c7d34ec95d9eda2d29b24cec2d98e9b2b887cb1f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Haiyue-Wang/Enable-Intel-VF-flow-director-with-DDP/20210309-112812
        git checkout c7d34ec95d9eda2d29b24cec2d98e9b2b887cb1f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 

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

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/intel/iavf/iavf_fdir.c:399: warning: expecting prototype for iavf_fdir_fltr(). Prototype was for iavf_find_fdir_fltr_by_loc() instead


vim +399 drivers/net/ethernet/intel/iavf/iavf_fdir.c

   390	
   391	/**
   392	 * iavf_fdir_fltr - find filter with location
   393	 * @adapter: pointer to the VF adapter structure
   394	 * @loc: location to find.
   395	 *
   396	 * Returns pointer to Flow Director filter if found or null
   397	 */
   398	struct iavf_fdir_fltr *iavf_find_fdir_fltr_by_loc(struct iavf_adapter *adapter, u32 loc)
 > 399	{
   400		struct iavf_fdir_fltr *rule;
   401	
   402		list_for_each_entry(rule, &adapter->fdir_list_head, list)
   403			if (rule->loc == loc)
   404				return rule;
   405	
   406		return NULL;
   407	}
   408	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org