tree:   https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git auth.v4
head:   d22f44dbe36eb82041e9e28db6a767c55c8d790e
commit: 5cc79fb9353861a89998e18c23576281e4c6390e [3/11] crypto/ffdhe: Finite Field DH Ephemeral Parameters
config: nios2-randconfig-r014-20210718 (attached as .config)
compiler: nios2-linux-gcc (GCC) 10.3.0
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/hare/scsi-devel.git/commit/?id=5cc79fb9353861a89998e18c23576281e4c6390e
        git remote add hare-scsi-devel https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git
        git fetch --no-tags hare-scsi-devel auth.v4
        git checkout 5cc79fb9353861a89998e18c23576281e4c6390e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=nios2 

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 >>):

>> crypto/ffdhe_helper.c:854:5: warning: no previous prototype for 'crypto_ffdhe_params' [-Wmissing-prototypes]
     854 | int crypto_ffdhe_params(struct dh *p, int bits)
         |     ^~~~~~~~~~~~~~~~~~~


vim +/crypto_ffdhe_params +854 crypto/ffdhe_helper.c

   853	
 > 854	int crypto_ffdhe_params(struct dh *p, int bits)

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