tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/cast-function
head:   eed09ebd6f47aeb92b3fe3b8d338b2a55e534928
commit: f9d45e65ef7f67bdb39c15d09bc6021f197d893e [1/3] ftrace: Fix -Wcast-function-type warnings on powerpc64
config: sh-randconfig-r026-20211013 (attached as .config)
compiler: sh4-linux-gcc (GCC) 11.2.0
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/gustavoars/linux.git/commit/?id=f9d45e65ef7f67bdb39c15d09bc6021f197d893e
        git remote add gustavoars https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
        git fetch --no-tags gustavoars for-next/cast-function
        git checkout f9d45e65ef7f67bdb39c15d09bc6021f197d893e
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sh SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   sh4-linux-ld: kernel/trace/ftrace.o: in function `update_ftrace_function':
>> ftrace.c:(.text+0x158): undefined reference to `ftrace_ops_list_func'

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