Hi "Enrico, I love your patch! Perhaps something to improve: [auto build test WARNING on gpio/for-next] [also build test WARNING on joel-aspeed/for-next v5.10-rc4 next-20201117] [cannot apply to 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] url: https://github.com/0day-ci/linux/commits/Enrico-Weigelt-metux-IT-consult/... base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next config: x86_64-randconfig-a004-20201117 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ace9653c11c6308401dcda2e8b26bf97e6e66e30) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/36e4dc1edd4f6c7679f654c393616dafd... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Enrico-Weigelt-metux-IT-consult/drivers-gpio-use-of_match_ptr-and-ACPI_PTR-macros/20201117-234621 git checkout 36e4dc1edd4f6c7679f654c393616dafd4ffa73c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): static const struct of_device_id lp3943_gpio_of_match[] = { ^ 1 warning generated. -- static const struct of_device_id pca953x_dt_ids[] = { ^ 1 warning generated. -- static const struct of_device_id tpic2810_of_match_table[] = { ^ 1 warning generated. -- static const struct of_device_id twl_gpio_match[] = { ^ 1 warning generated. -- static const struct of_device_id xgpio_of_match[] = { ^ 1 warning generated. vim +/lp3943_gpio_of_match +208 drivers/gpio/gpio-lp3943.c 0cc59b9d98d5541 Milo Kim 2013-12-06 207 0cc59b9d98d5541 Milo Kim 2013-12-06 @208 static const struct of_device_id lp3943_gpio_of_match[] = { 0cc59b9d98d5541 Milo Kim 2013-12-06 209 { .compatible = "ti,lp3943-gpio", }, 0cc59b9d98d5541 Milo Kim 2013-12-06 210 { } 0cc59b9d98d5541 Milo Kim 2013-12-06 211 }; 0cc59b9d98d5541 Milo Kim 2013-12-06 212 MODULE_DEVICE_TABLE(of, lp3943_gpio_of_match); 0cc59b9d98d5541 Milo Kim 2013-12-06 213 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org