Hi Komal, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.4-rc1 next-20230512] [cannot apply to robh/for-next] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Komal-Bajaj/nvmem-qfprom-Add-support-for-secure-reading/20230512-202430 base: linus/master patch link: https://lore.kernel.org/r/20230512122134.24339-7-quic_kbajaj%40quicinc.com patch subject: [PATCH v3 06/10] soc: qcom: Add LLCC support for multi channel DDR config: riscv-randconfig-r042-20230509 (https://download.01.org/0day-ci/archive/20230513/202305130303.wwdZb5hy-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/52808ee1c4720767ab330b371d356ffbd8fe7235 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Komal-Bajaj/nvmem-qfprom-Add-support-for-secure-reading/20230512-202430 git checkout 52808ee1c4720767ab330b371d356ffbd8fe7235 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/soc/qcom/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202305130303.wwdZb5hy-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/soc/qcom/llcc-qcom.c:951:8: error: call to undeclared function 'nvmem_cell_read_u8'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ret = nvmem_cell_read_u8(&pdev->dev, "multi_chan_ddr", cfg_index); ^ 1 error generated. vim +/nvmem_cell_read_u8 +951 drivers/soc/qcom/llcc-qcom.c 946 947 static int qcom_llcc_get_cfg_index(struct platform_device *pdev, u8 *cfg_index) 948 { 949 int ret = 0; 950 > 951 ret = nvmem_cell_read_u8(&pdev->dev, "multi_chan_ddr", cfg_index); 952 if (ret == -ENOENT) { 953 *cfg_index = 0; 954 return 0; 955 } 956 957 return ret; 958 } 959 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests