linux-kernel - Re: [PATCH v9 4/4] console: Make persistent scrollback a boot parameter

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Message-ID: <201701112105.R6Zog6jw%fengguang.wu@intel.com>
Date:   Wed, 11 Jan 2017 21:32:38 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Manuel Schölling <manuel.schoelling@....de>
Cc:     kbuild-all@...org, gregkh@...uxfoundation.org, jslaby@...e.com,
        kilobyte@...band.pl, lkml14@...tdoyle.com, rdunlap@...radead.org,
        shorne@...il.com, andrey_utkin@...tmail.com,
        akpm@...ux-foundation.org, paul.burton@...tec.com,
        daniel.vetter@...ll.ch, tj@...nel.org, hdegoede@...hat.com,
        linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
        Manuel Schölling <manuel.schoelling@....de>
Subject: Re: [PATCH v9 4/4] console: Make persistent scrollback a boot
 parameter

Hi Manuel,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.10-rc3 next-20170111]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Manuel-Sch-lling/console-Add-persistent-scrollback-buffers-for-all-VGA-consoles/20170111-203640
config: i386-randconfig-x018-201702 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/module.h:18:0,
                    from drivers/video/console/vgacon.c:36:
   drivers/video/console/vgacon.c: In function '__check_scrollback_persistent':
>> drivers/video/console/vgacon.c:1423:43: error: 'scrollback_persistent' undeclared (first use in this function)
    module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
                                              ^
   include/linux/moduleparam.h:344:68: note: in definition of macro '__param_check'
     static inline type __always_unused *__check_##name(void) { return(p); }
                                                                       ^
   include/linux/moduleparam.h:146:2: note: in expansion of macro 'param_check_bool'
     param_check_##type(name, &(value));       \
     ^~~~~~~~~~~~
>> drivers/video/console/vgacon.c:1423:1: note: in expansion of macro 'module_param_named'
    module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
    ^~~~~~~~~~~~~~~~~~
   drivers/video/console/vgacon.c:1423:43: note: each undeclared identifier is reported only once for each function it appears in
    module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
                                              ^
   include/linux/moduleparam.h:344:68: note: in definition of macro '__param_check'
     static inline type __always_unused *__check_##name(void) { return(p); }
                                                                       ^
   include/linux/moduleparam.h:146:2: note: in expansion of macro 'param_check_bool'
     param_check_##type(name, &(value));       \
     ^~~~~~~~~~~~
>> drivers/video/console/vgacon.c:1423:1: note: in expansion of macro 'module_param_named'
    module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
    ^~~~~~~~~~~~~~~~~~
   drivers/video/console/vgacon.c: At top level:
>> drivers/video/console/vgacon.c:1423:43: error: 'scrollback_persistent' undeclared here (not in a function)
    module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
                                              ^
   include/linux/moduleparam.h:225:54: note: in definition of macro '__module_param_call'
         VERIFY_OCTAL_PERMISSIONS(perm), level, flags, { arg } }
                                                         ^~~
   include/linux/moduleparam.h:147:2: note: in expansion of macro 'module_param_cb'
     module_param_cb(name, &param_ops_##type, &value, perm);     \
     ^~~~~~~~~~~~~~~
>> drivers/video/console/vgacon.c:1423:1: note: in expansion of macro 'module_param_named'
    module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
    ^~~~~~~~~~~~~~~~~~

vim +/scrollback_persistent +1423 drivers/video/console/vgacon.c

  1417		.con_build_attr = vgacon_build_attr,
  1418		.con_invert_region = vgacon_invert_region,
  1419		.con_flush_scrollback = vgacon_flush_scrollback,
  1420	};
  1421	EXPORT_SYMBOL(vga_con);
  1422	
> 1423	module_param_named(scrollback_persistent, scrollback_persistent, bool, 0000);
  1424	MODULE_PARM_DESC(scrollback_persistent, "Enable persistent scrollback for all vga consoles");
  1425	MODULE_LICENSE("GPL");

---
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