[kbuild-all] [intel-linux-intel-lts:5.4/preempt-rt 15/16] arch/powerpc/platforms/pseries/iommu.c:181:30: error: unused variable 'tcp_page_lock'

tree: https://github.com/intel/linux-intel-lts.git 5.4/preempt-rt head: 2046457bf9f4a420f69e915453d59db5b38edbaa commit: 3c3f9863f8b96ccbf6fd420c93f1685f6085651a [15/16] Merge tag 'lts-v5.4.58-yocto-200825T002733Z' into lts2019/yocto-rt config: powerpc-randconfig-r033-20210517 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0a34ff8bcb1df16fe7d643ccbe4567b2162c5024) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://github.com/intel/linux-intel-lts/commit/3c3f9863f8b96ccbf6fd420c9... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 5.4/preempt-rt git checkout 3c3f9863f8b96ccbf6fd420c93f1685f6085651a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): static DEFINE_LOCAL_IRQ_LOCK(tcp_page_lock); ^ 1 error generated. vim +/tcp_page_lock +181 arch/powerpc/platforms/pseries/iommu.c ^1da177e4c3f41 arch/ppc64/kernel/pSeries_iommu.c Linus Torvalds 2005-04-16 179 df015604cf5bb0 arch/powerpc/platforms/pseries/iommu.c Anton Blanchard 2013-10-17 180 static DEFINE_PER_CPU(__be64 *, tce_page); 3ab3ff1d185c02 arch/powerpc/platforms/pseries/iommu.c Sebastian Andrzej Siewior 2019-03-26 @181 static DEFINE_LOCAL_IRQ_LOCK(tcp_page_lock); ^1da177e4c3f41 arch/ppc64/kernel/pSeries_iommu.c Linus Torvalds 2005-04-16 182 :::::: The code at line 181 was first introduced by commit :::::: 3ab3ff1d185c02c51cfb22a22476d8c3791c8810 powerpc/pseries/iommu: Use a locallock instead local_irq_save() :::::: TO: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de&gt; :::::: CC: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org