tree: https://github.com/frank-w/BPI-R2-4.14 5.14-hdmilarb2 head: 470ade477361a12be809a11457389924e4348e67 commit: 73dad51765a234171ad085d11f6aafb00ab9b863 [29/36] mtk-mdp: soc: mediatek: register mdp from mmsys config: powerpc64-buildonly-randconfig-r004-20210715 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0e49c54a8cbd3e779e5526a5888c683c01cc3c50) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://github.com/frank-w/BPI-R2-4.14/commit/73dad51765a234171ad085d11f6... git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14 git fetch --no-tags frank-w-bpi-r2-4.14 5.14-hdmilarb2 git checkout 73dad51765a234171ad085d11f6aafb00ab9b863 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 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 mtk_mdp_of_ids[] = { ^ 1 warning generated. vim +/mtk_mdp_of_ids +47 drivers/media/platform/mtk-mdp/mtk_mdp_core.c c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 46 c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 @47 static const struct of_device_id mtk_mdp_of_ids[] = { c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 48 { .compatible = "mediatek,mt8173-mdp", }, c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 49 { }, c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 50 }; c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 51 MODULE_DEVICE_TABLE(of, mtk_mdp_of_ids); c8eb2d7e8202fd Minghsiu Tsai 2016-09-08 52 :::::: The code at line 47 was first introduced by commit :::::: c8eb2d7e8202fd9cb912f5d33cc34ede66dcb24a [media] media: Add Mediatek MDP Driver :::::: TO: Minghsiu Tsai <minghsiu.tsai(a)mediatek.com&gt; :::::: CC: Mauro Carvalho Chehab <mchehab(a)s-opensource.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org