Hi Mauro, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 06a4ec1d9dc652e17ee3ac2ceb6c7cf6c2b75cdd commit: df823a8208c434eee6e4e9aa016c956d0968e2e2 media: cec: rename CEC platform drivers config options date: 4 months ago config: x86_64-randconfig-r006-20200818 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 790878f291fa5dc58a1c560cb6cc76fd1bfd1c5a) 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 df823a8208c434eee6e4e9aa016c956d0968e2e2 # 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 tegra_cec_of_match[] = { ^ 1 warning generated. # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout df823a8208c434eee6e4e9aa016c956d0968e2e2 vim +/tegra_cec_of_match +455 drivers/media/cec/platform/tegra/tegra_cec.c 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 454 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 @455 static const struct of_device_id tegra_cec_of_match[] = { 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 456 { .compatible = "nvidia,tegra114-cec", }, 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 457 { .compatible = "nvidia,tegra124-cec", }, 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 458 { .compatible = "nvidia,tegra210-cec", }, 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 459 {}, 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 460 }; 9d2d60687c9a06 drivers/media/platform/tegra-cec/tegra_cec.c Hans Verkuil 2017-07-15 461 :::::: The code at line 455 was first introduced by commit :::::: 9d2d60687c9a0621e0da40338be4cbd7e3783be2 media: tegra-cec: add Tegra HDMI CEC driver :::::: TO: Hans Verkuil <hans.verkuil(a)cisco.com&gt; :::::: CC: Mauro Carvalho Chehab <mchehab(a)osg.samsung.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org