tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7ce53e3a447bced7b85ed181c4d027e93c062e07 commit: 9a976cd278eafa496ce30196810ef2e879a4a7d5 [2161/6654] clk: imx8m: Support module build config: x86_64-randconfig-a011-20200910 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0a5dc7effb191eff740e0e7ae7bd8e1f6bdb3ad9) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 9a976cd278eafa496ce30196810ef2e879a4a7d5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): static const struct of_device_id imx8mm_clk_of_match[] = { ^ 1 warning generated. # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 9a976cd278eafa496ce30196810ef2e879a4a7d5 vim +/imx8mm_clk_of_match +641 drivers/clk/imx/clk-imx8mm.c af7e7ee0e4280c Abel Vesa 2019-07-09 640 af7e7ee0e4280c Abel Vesa 2019-07-09 @641 static const struct of_device_id imx8mm_clk_of_match[] = { af7e7ee0e4280c Abel Vesa 2019-07-09 642 { .compatible = "fsl,imx8mm-ccm" }, af7e7ee0e4280c Abel Vesa 2019-07-09 643 { /* Sentinel */ }, af7e7ee0e4280c Abel Vesa 2019-07-09 644 }; af7e7ee0e4280c Abel Vesa 2019-07-09 645 MODULE_DEVICE_TABLE(of, imx8mm_clk_of_match); af7e7ee0e4280c Abel Vesa 2019-07-09 646 :::::: The code at line 641 was first introduced by commit :::::: af7e7ee0e4280c29c41b6ec64b892bb53987a997 clk: imx8mm: Switch to platform driver :::::: TO: Abel Vesa <abel.vesa(a)nxp.com&gt; :::::: CC: Shawn Guo <shawnguo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org