Hi Lizhi, I love your patch! Yet something to improve: [auto build test ERROR on vkoul-dmaengine/next] [also build test ERROR on linus/master v6.1-rc2 next-20221024] [cannot apply to xilinx-xlnx/master] [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/Lizhi-Hou/xilinx-XDMA-driver/20221018-001054 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next patch link: https://lore.kernel.org/r/1666022581-27279-2-git-send-email-lizhi.hou%40amd.com patch subject: [PATCH V8 XDMA 1/2] dmaengine: xilinx: xdma: Add xilinx xdma driver config: s390-allmodconfig compiler: s390-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/8209f5c2fcc7cbd29ce8a87ed56301bf0a8c02b3 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Lizhi-Hou/xilinx-XDMA-driver/20221018-001054 git checkout 8209f5c2fcc7cbd29ce8a87ed56301bf0a8c02b3 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): ERROR: modpost: "devm_ioremap_resource" [drivers/dma/qcom/hdma.ko] undefined! >> ERROR: modpost: "devm_ioremap_resource" [drivers/dma/xilinx/xdma.ko] undefined! ERROR: modpost: "devm_ioremap_resource" [drivers/dma/fsl-edma.ko] undefined! ERROR: modpost: "devm_ioremap_resource" [drivers/dma/idma64.ko] undefined! ERROR: modpost: "iounmap" [drivers/tty/ipwireless/ipwireless.ko] undefined! ERROR: modpost: "ioremap" [drivers/tty/ipwireless/ipwireless.ko] undefined! ERROR: modpost: "devm_platform_ioremap_resource" [drivers/char/xillybus/xillybus_of.ko] undefined! ERROR: modpost: "devm_memremap" [drivers/misc/open-dice.ko] undefined! ERROR: modpost: "devm_memunmap" [drivers/misc/open-dice.ko] undefined! ERROR: modpost: "iounmap" [drivers/net/ethernet/8390/pcnet_cs.ko] undefined! WARNING: modpost: suppressed 16 unresolved symbol warnings because there were too many) -- 0-DAY CI Kernel Test Service https://01.org/lkp