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Date:   Tue, 26 Oct 2021 08:35:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Hill Ma <maahiuzeon@...il.com>, benh@...nel.crashing.org,
        linuxppc-dev@...ts.ozlabs.org
Cc:     kbuild-all@...ts.01.org, Hill Ma <maahiuzeon@...il.com>,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH] macintosh/via-pmu-led: make disk activity usage a
 parameter.

Hi Hill,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.15-rc7 next-20211025]
[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/Hill-Ma/macintosh-via-pmu-led-make-disk-activity-usage-a-parameter/20211025-152845
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 87066fdd2e30fe9dd531125d95257c118a74617e
config: powerpc-pmac32_defconfig (attached as .config)
compiler: powerpc-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/9f9763c0836766055225087cee4126f8d2974252
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Hill-Ma/macintosh-via-pmu-led-make-disk-activity-usage-a-parameter/20211025-152845
        git checkout 9f9763c0836766055225087cee4126f8d2974252
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from drivers/macintosh/via-pmu-led.c:28:
   drivers/macintosh/via-pmu-led.c: In function '__check_adb_pmu_led_disk':
>> include/linux/moduleparam.h:329:34: error: returning 'int *' from a function with incompatible return type 'bool *' {aka '_Bool *'} [-Werror=incompatible-pointer-types]
     329 |         param_check_##type(name, &(var));                               \
         |                                  ^
   include/linux/moduleparam.h:409:75: note: in definition of macro '__param_check'
     409 |         static inline type __always_unused *__check_##name(void) { return(p); }
         |                                                                           ^
   include/linux/moduleparam.h:329:9: note: in expansion of macro 'param_check_bool'
     329 |         param_check_##type(name, &(var));                               \
         |         ^~~~~~~~~~~~
   drivers/macintosh/via-pmu-led.c:120:1: note: in expansion of macro 'core_param'
     120 | core_param(adb_pmu_led_disk, adb_pmu_led_disk, bool, 0644);
         | ^~~~~~~~~~
   cc1: some warnings being treated as errors


vim +329 include/linux/moduleparam.h

907b29eb41aa604 Rusty Russell   2010-08-11  314  
67e67ceaac5bf55 Rusty Russell   2008-10-22  315  #ifndef MODULE
67e67ceaac5bf55 Rusty Russell   2008-10-22  316  /**
67e67ceaac5bf55 Rusty Russell   2008-10-22  317   * core_param - define a historical core kernel parameter.
67e67ceaac5bf55 Rusty Russell   2008-10-22  318   * @name: the name of the cmdline and sysfs parameter (often the same as var)
67e67ceaac5bf55 Rusty Russell   2008-10-22  319   * @var: the variable
546970bc6afc7fb Rusty Russell   2010-08-11  320   * @type: the type of the parameter
67e67ceaac5bf55 Rusty Russell   2008-10-22  321   * @perm: visibility in sysfs
67e67ceaac5bf55 Rusty Russell   2008-10-22  322   *
67e67ceaac5bf55 Rusty Russell   2008-10-22  323   * core_param is just like module_param(), but cannot be modular and
67e67ceaac5bf55 Rusty Russell   2008-10-22  324   * doesn't add a prefix (such as "printk.").  This is for compatibility
67e67ceaac5bf55 Rusty Russell   2008-10-22  325   * with __setup(), and it makes sense as truly core parameters aren't
67e67ceaac5bf55 Rusty Russell   2008-10-22  326   * tied to the particular file they're in.
67e67ceaac5bf55 Rusty Russell   2008-10-22  327   */
67e67ceaac5bf55 Rusty Russell   2008-10-22  328  #define core_param(name, var, type, perm)				\
67e67ceaac5bf55 Rusty Russell   2008-10-22 @329  	param_check_##type(name, &(var));				\
91f9d330cc14932 Jani Nikula     2014-08-27  330  	__module_param_call("", name, &param_ops_##type, &var, perm, -1, 0)
ec0ccc16a09fc32 Dmitry Torokhov 2015-03-30  331  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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