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-unnecessary-cast/20210811-211613
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/d796b458f195f35962a4ca889134f542e2186b1f
        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@intel.com>

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':
>> include/linux/kern_levels.h:5:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=]
       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