Hi Mauro, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 39c3c396f8131f3db454c80e0fcfcdc54ed9ec01 commit: e7b8153e2a4f0c9c8d1450aa7328d54ea64fe8b2 media: platform: place stm32/ and sti/ under st/ dir date: 4 months ago config: mips-buildonly-randconfig-r001-20220727 (https://download.01.org/0day-ci/archive/20220728/202207280016.r8tOLF4N-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8dfaecc4c24494337933aff9d9166486ca0949f1) 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 mips cross compiling tool for clang build # apt-get install binutils-mipsel-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e7b8153e2a4f0c9c8d1450aa7328d54ea64fe8b2 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e7b8153e2a4f0c9c8d1450aa7328d54ea64fe8b2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/media/platform/ drivers/tty/serial/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c:1175:34: warning: unused variable 'c8sectpfe_match' [-Wunused-const-variable] static const struct of_device_id c8sectpfe_match[] = { ^ 1 warning generated. vim +/c8sectpfe_match +1175 drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 1174 c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 @1175 static const struct of_device_id c8sectpfe_match[] = { c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 1176 { .compatible = "st,stih407-c8sectpfe" }, c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 1177 { /* sentinel */ }, c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 1178 }; c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 1179 MODULE_DEVICE_TABLE(of, c8sectpfe_match); c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 1180 :::::: The code at line 1175 was first introduced by commit :::::: c5f5d0f99794cfb675ecacfe37a1b33b352b9752 [media] c8sectpfe: STiH407/10 Linux DVB demux support :::::: TO: Peter Griffin <peter.griffin@xxxxxxxxxx> :::::: CC: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
