Hi "Jonathan, I love your patch! Perhaps something to improve: [auto build test WARNING on linusw-pinctrl/devel] [also build test WARNING on robh/for-next linus/master v5.16-rc4 next-20211207] [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/Jonathan-Neusch-fer/Nuvoton-WPCM... base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel config: h8300-randconfig-r024-20211207 (https://download.01.org/0day-ci/archive/20211208/202112080810.lGBV2yEm-lk...) compiler: h8300-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/c08fb0aafb60234854aa86433da809fe5... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jonathan-Neusch-fer/Nuvoton-WPCM450-pinctrl-and-GPIO-driver/20211208-051101 git checkout c08fb0aafb60234854aa86433da809fe5112f55e # 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=h8300 SHELL=/bin/bash drivers/pinctrl/nuvoton/ 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 >>): In file included from include/linux/device.h:15, from drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c:5: drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c: In function 'npcm7xx_get_groups_count': 1564 | dev_dbg(npcm->dev, "group size: %d\n", ARRAY_SIZE(npcm7xx_groups)); | ^~~~~~~~~~~~~~~~~~ include/linux/dev_printk.h:129:41: note: in definition of macro 'dev_printk' 129 | _dev_printk(level, dev, fmt, ##__VA_ARGS__); \ | ^~~ include/linux/dev_printk.h:158:37: note: in expansion of macro 'dev_fmt' 158 | dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~ drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c:1564:9: note: in expansion of macro 'dev_dbg' 1564 | dev_dbg(npcm->dev, "group size: %d\n", ARRAY_SIZE(npcm7xx_groups)); | ^~~~~~~ drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c:1564:42: note: format string is defined here 1564 | dev_dbg(npcm->dev, "group size: %d\n", ARRAY_SIZE(npcm7xx_groups)); | ~^ | | | int | %ld vim +1564 drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c 3b588e43ee5c7a Tomer Maimon 2018-08-08 1559 3b588e43ee5c7a Tomer Maimon 2018-08-08 1560 static int npcm7xx_get_groups_count(struct pinctrl_dev *pctldev) 3b588e43ee5c7a Tomer Maimon 2018-08-08 1561 { 3b588e43ee5c7a Tomer Maimon 2018-08-08 1562 struct npcm7xx_pinctrl *npcm = pinctrl_dev_get_drvdata(pctldev); 3b588e43ee5c7a Tomer Maimon 2018-08-08 1563 3b588e43ee5c7a Tomer Maimon 2018-08-08 @1564 dev_dbg(npcm->dev, "group size: %d\n", ARRAY_SIZE(npcm7xx_groups)); 3b588e43ee5c7a Tomer Maimon 2018-08-08 1565 return ARRAY_SIZE(npcm7xx_groups); 3b588e43ee5c7a Tomer Maimon 2018-08-08 1566 } 3b588e43ee5c7a Tomer Maimon 2018-08-08 1567 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org