Hi Woody,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing]

url:    https://github.com/0day-ci/linux/commits/Woody-Lin/ANDROID-staging-add-userpanic-dev-driver/20210826-173040
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git a69bbd2f77a6e26b2b1c3d7fcc5c715169dc01c5
config: mips-allyesconfig (attached as .config)
compiler: mips-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/89dde12be7959a5a75172d0609d344f104d80070
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Woody-Lin/ANDROID-staging-add-userpanic-dev-driver/20210826-173040
        git checkout 89dde12be7959a5a75172d0609d344f104d80070
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

   In file included from include/linux/printk.h:7,
                    from include/asm-generic/bug.h:22,
                    from arch/mips/include/asm/bug.h:42,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:15,
                    from drivers/staging/android/userpanic-dev.c:11:
   drivers/staging/android/userpanic-dev.c: In function 'userpanic_device_ioctl':

quoted

include/linux/kern_levels.h:5:25: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Wformat=]

       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
      11 | #define KERN_ERR        KERN_SOH "3"    /* error conditions */
         |                         ^~~~~~~~
   include/linux/printk.h:390:16: note: in expansion of macro 'KERN_ERR'
     390 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~
   drivers/staging/android/userpanic-dev.c:61:25: note: in expansion of macro 'pr_err'
      61 |                         pr_err("failed to strndup .title_uaddr: %d\n", PTR_ERR(title));
         |                         ^~~~~~

quoted

include/linux/kern_levels.h:5:25: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Wformat=]

       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
      11 | #define KERN_ERR        KERN_SOH "3"    /* error conditions */
         |                         ^~~~~~~~
   include/linux/printk.h:390:16: note: in expansion of macro 'KERN_ERR'
     390 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~
   drivers/staging/android/userpanic-dev.c:69:33: note: in expansion of macro 'pr_err'
      69 |                                 pr_err("failed to strndup .msg_uaddr: %d\n", PTR_ERR(msg));
         |                                 ^~~~~~


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  

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0-DAY CI Kernel Test Service, Intel Corporation
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