Hi Stefan, Thank you for the patch! Yet something to improve: [auto build test ERROR on rafael-pm/linux-next] [also build test ERROR on broonie-sound/for-next linus/master v5.19-rc3 next-20220622] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Stefan-Binding/Read-_SUB-from-ACPI-to-be-able-to-identify-firmware/20220622-211004 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: powerpc-buildonly-randconfig-r002-20220622 (https://download.01.org/0day-ci/archive/20220623/202206230433.0LyjOI85-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8b8d126598ce7bd5243da7f94f69fa1104288bee) 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-lab-lkp/linux/commit/97b928a895ce3105296f0036393bb9ee04f11ae4 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Stefan-Binding/Read-_SUB-from-ACPI-to-be-able-to-identify-firmware/20220622-211004 git checkout 97b928a895ce3105296f0036393bb9ee04f11ae4 # 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=powerpc SHELL=/bin/bash arch/powerpc/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from arch/powerpc/kernel/traps.c:32: In file included from include/linux/backlight.h:13: In file included from include/linux/fb.h:7: In file included from include/uapi/linux/fb.h:6: In file included from include/linux/i2c.h:13: >> include/linux/acpi.h:1029:12: error: unused function 'acpi_get_sub' [-Werror,-Wunused-function] static int acpi_get_sub(acpi_handle handle, char *sub, size_t size) ^ 1 error generated. vim +/acpi_get_sub +1029 include/linux/acpi.h 1028 > 1029 static int acpi_get_sub(acpi_handle handle, char *sub, size_t size) 1030 { 1031 return -ENODEV; 1032 } 1033 -- 0-DAY CI Kernel Test Service https://01.org/lkp
