Hi "Peng, Thank you for the patch! Yet something to improve: [auto build test ERROR on shawnguo/for-next] [also build test ERROR on robh/for-next linus/master v5.16-rc8] [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/0day-ci/linux/commits/Peng-Fan-OSS/mailbox-imx-misc-fix-and-SECO-MU-support/20220104-142853 base: https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20220105/202201050712.94b9xX70-lkp@xxxxxxxxx/config) compiler: mips-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/565bba9e401bda77a3c936df0262681cd2622d80 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Peng-Fan-OSS/mailbox-imx-misc-fix-and-SECO-MU-support/20220104-142853 git checkout 565bba9e401bda77a3c936df0262681cd2622d80 # 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=mips 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 >>, old ones prefixed by <<): >> ERROR: modpost: "pm_system_irq_wakeup" [drivers/mailbox/imx-mailbox.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx