[kbuild-all] Re: [PATCH] ARM/smp_twd: Cleanup the unnecessary cast

Hi Tang, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on xlnx/master] [also build test WARNING on arm/for-next keystone/next soc/for-next rockchip/for-next arm64/for-next/core shawnguo/for-next clk/clk-next linus/master v5.14-rc5 next-20210811] [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/Tang-Bin/ARM-smp_twd-Cleanup-the... base: https://github.com/Xilinx/linux-xlnx master config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 10.3.0 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/d796b458f195f35962a4ca889134f542e... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tang-Bin/ARM-smp_twd-Cleanup-the-unnecessary-cast/20210811-211613 git checkout d796b458f195f35962a4ca889134f542e2186b1f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arm 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/printk.h:7, from include/linux/kernel.h:16, from arch/arm/kernel/smp_twd.c:9: arch/arm/kernel/smp_twd.c: In function 'twd_get_clock': 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:11:18: note: in expansion of macro 'KERN_SOH' 11 | #define KERN_ERR KERN_SOH "3" /* error conditions */ | ^~~~~~~~ include/linux/printk.h:343:9: note: in expansion of macro 'KERN_ERR' 343 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~ arch/arm/kernel/smp_twd.c:202:3: note: in expansion of macro 'pr_err' 202 | pr_err("smp_twd: clock not found %d\n", PTR_ERR(twd_clk)); | ^~~~~~ vim +5 include/linux/kern_levels.h 314ba3520e513a Joe Perches 2012-07-30 4 04d2c8c83d0e3a Joe Perches 2012-07-30 @5 #define KERN_SOH "\001" /* ASCII Start Of Header */ 04d2c8c83d0e3a Joe Perches 2012-07-30 6 #define KERN_SOH_ASCII '\001' 04d2c8c83d0e3a Joe Perches 2012-07-30 7 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org