tree: git://github.com/linux-chenxing/linux.git msc313_mainlining head: 1b2db4b2c68fdb4acc386166e82a28dfbc808705 commit: c4c8b6c55a5a3880c67510369fd6c3bebe11d1f3 [41/62] pinctrl: mstar: msc313 pinctrl driver config: arm64-randconfig-r033-20211002 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 962e503cc8bc411f7523cc393acae8aae425b1c4) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/linux-chenxing/linux/commit/c4c8b6c55a5a3880c67510369fd6c3bebe11d1f3 git remote add chenxing git://github.com/linux-chenxing/linux.git git fetch --no-tags chenxing msc313_mainlining git checkout c4c8b6c55a5a3880c67510369fd6c3bebe11d1f3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/pinctrl/mstar/pinctrl-msc313-pm.c:35:27: warning: unused variable 'pm_uart_groups' [-Wunused-const-variable] static const char * const pm_uart_groups[] = { ^ >> drivers/pinctrl/mstar/pinctrl-msc313-pm.c:39:27: warning: unused variable 'pm_spi_groups' [-Wunused-const-variable] static const char * const pm_spi_groups[] = { ^ >> drivers/pinctrl/mstar/pinctrl-msc313-pm.c:43:27: warning: unused variable 'pm_irin_groups' [-Wunused-const-variable] static const char * const pm_irin_groups[] = { ^ 3 warnings generated. vim +/pm_uart_groups +35 drivers/pinctrl/mstar/pinctrl-msc313-pm.c 738e49982a635d Daniel Palmer 2021-01-10 34 738e49982a635d Daniel Palmer 2021-01-10 @35 static const char * const pm_uart_groups[] = { 738e49982a635d Daniel Palmer 2021-01-10 36 GROUPNAME_PM_UART, 738e49982a635d Daniel Palmer 2021-01-10 37 }; 738e49982a635d Daniel Palmer 2021-01-10 38 738e49982a635d Daniel Palmer 2021-01-10 @39 static const char * const pm_spi_groups[] = { 738e49982a635d Daniel Palmer 2021-01-10 40 GROUPNAME_PM_SPI, 738e49982a635d Daniel Palmer 2021-01-10 41 }; 738e49982a635d Daniel Palmer 2021-01-10 42 738e49982a635d Daniel Palmer 2021-01-10 @43 static const char * const pm_irin_groups[] = { 738e49982a635d Daniel Palmer 2021-01-10 44 GROUPNAME_PM_IRIN, 738e49982a635d Daniel Palmer 2021-01-10 45 }; 738e49982a635d Daniel Palmer 2021-01-10 46 :::::: The code at line 35 was first introduced by commit :::::: 738e49982a635dffd5c04f7f369c3895267577d4 pinctrl: mstar: msc313 pm pinctrl driver :::::: TO: Daniel Palmer :::::: CC: Daniel Palmer --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org