Hi Cai, I love your patch! Yet something to improve: [auto build test ERROR on staging/staging-testing] url: https://github.com/0day-ci/linux/commits/Cai-Huoqing/staging-zynpu-Add-driver-support-for-ARM-China-ZHOUYI-AI-accelerator/20211124-164741 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 1189d2fb15a4b09b2e8dd01d60a0817d985d933d config: csky-buildonly-randconfig-r004-20211126 (https://download.01.org/0day-ci/archive/20211127/202111270828.tUBxzc9e-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/95965c589ea2e279e082e3c9aa18c2ddd8494d64 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Cai-Huoqing/staging-zynpu-Add-driver-support-for-ARM-China-ZHOUYI-AI-accelerator/20211124-164741 git checkout 95965c589ea2e279e082e3c9aa18c2ddd8494d64 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=csky SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> csky-linux-ld: drivers/staging/zynpu/zynpu_drv.o:(.rodata+0xc0): undefined reference to `z2_platform_priv' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
