Hi "Uwe, I love your patch! Yet something to improve: [auto build test ERROR on 9e1ff307c779ce1f0f810c7ecce3d95bbae40896] url: https://github.com/0day-ci/linux/commits/Uwe-Kleine-K-nig/Let-spi-drivers... base: 9e1ff307c779ce1f0f810c7ecce3d95bbae40896 config: arc-allyesconfig (attached as .config) compiler: arceb-elf-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/8f3e2ba8c698fe9dc9df832c5f16e6d87... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Uwe-Kleine-K-nig/Let-spi-drivers-return-0-in-remove/20211014-221546 git checkout 8f3e2ba8c698fe9dc9df832c5f16e6d871ab85a4 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/net/ethernet/wiznet/w5100.c: In function 'w5100_mmio_remove': 1069 | return 0 | ^ | ; 1070 | } | ~ vim +1069 drivers/net/ethernet/wiznet/w5100.c 1064 1065 static int w5100_mmio_remove(struct platform_device *pdev) 1066 { 1067 w5100_remove(&pdev->dev); 1068 1070 } 1071 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org