[powerpc:next-test 7/8] arch/powerpc/lib/feature-fixups.c:233:32: error: cast to smaller integer type 'enum stf_barrier_type' from 'void *'

kernel test robot lkp at intel.com
Wed May 5 03:26:05 AEST 2021

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test
head:   a5014a5c936a2a9a223e699e1f3abd54d5f68d2c
commit: 682ebb015052696ac93cf8df28142d83be8dbcc3 [7/8] powerpc/64s: Fix crashes when toggling stf barrier
config: powerpc-randconfig-r022-20210503 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8f5a2a5836cc8e4c1def2bdeb022e7b496623439)
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://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=682ebb015052696ac93cf8df28142d83be8dbcc3
        git remote add powerpc https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
        git fetch --no-tags powerpc next-test
        git checkout 682ebb015052696ac93cf8df28142d83be8dbcc3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc 

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

All errors (new ones prefixed by >>):

>> arch/powerpc/lib/feature-fixups.c:233:32: error: cast to smaller integer type 'enum stf_barrier_type' from 'void *' [-Werror,-Wvoid-pointer-to-enum-cast]
           enum stf_barrier_type types = (enum stf_barrier_type)data;
   1 error generated.

vim +233 arch/powerpc/lib/feature-fixups.c

   231	static int __do_stf_barrier_fixups(void *data)
   232	{
 > 233		enum stf_barrier_type types = (enum stf_barrier_type)data;
   235		do_stf_entry_barrier_fixups(types);
   236		do_stf_exit_barrier_fixups(types);
   238		return 0;
   239	}

0-DAY CI Kernel Test Service, Intel Corporation
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