Hi Robert, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on clk/clk-next] [also build test WARNING on v5.12-rc2 next-20210311] [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/Robert-Hancock/Si5341-driver-upd... base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next config: i386-randconfig-s001-20210312 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-262-g5e674421-dirty # https://github.com/0day-ci/linux/commit/636016363158ea8e30592ff4974f344ca... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Robert-Hancock/Si5341-driver-updates/20210312-062821 git checkout 636016363158ea8e30592ff4974f344ca0043f82 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org