Hi Elaine, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on rockchip/for-next] [also build test WARNING on v5.12-rc3 next-20210315] [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/Elaine-Zhang/clk-rockchip-add-cl... base: https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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://github.com/0day-ci/linux/commit/081fc0189f5d4408e7c7425f4385392b0... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Elaine-Zhang/clk-rockchip-add-clock-controller-for-rk3568/20210315-144202 git checkout 081fc0189f5d4408e7c7425f4385392b0fd97d9f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 187 | static const struct rockchip_cpuclk_reg_data rk3188_cpuclk_data = { | ^ vim +187 drivers/clk/rockchip/clk-rk3188.c 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 186 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 @187 static const struct rockchip_cpuclk_reg_data rk3188_cpuclk_data = { 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 188 .core_reg = RK2928_CLKSEL_CON(0), 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 189 .div_core_shift = 9, 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 190 .div_core_mask = 0x1f, 268aebaa241015 Xing Zheng 2016-03-09 191 .mux_core_alt = 1, 268aebaa241015 Xing Zheng 2016-03-09 192 .mux_core_main = 0, 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 193 .mux_core_shift = 8, 268aebaa241015 Xing Zheng 2016-03-09 194 .mux_core_mask = 0x1, 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 195 }; 0e5bdb3f9fa5c2 Heiko Stuebner 2014-09-05 196 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org