linux-kernel - [deller-fbdev:fb-fixes 1/5] drivers/video/console/sticore.c:1131:5: warning: no previous prototype for 'fb_is_primary

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Date:   Fri, 3 Jun 2022 09:28:43 +0800
From:   kernel test robot <lkp@...el.com>
To:     Helge Deller <deller@....de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [deller-fbdev:fb-fixes 1/5] drivers/video/console/sticore.c:1131:5:
 warning: no previous prototype for 'fb_is_primary_device'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git fb-fixes
head:   d92f129b594fe3eebf2f7abfffea2e6dbdc5936c
commit: f1a3b3c2b5b1b846963ffa5b4fddfaf8c9a4c985 [1/5] parisc/stifb: Implement fb_is_primary_device()
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20220603/202206030949.FluWpZnn-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 11.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git/commit/?id=f1a3b3c2b5b1b846963ffa5b4fddfaf8c9a4c985
        git remote add deller-fbdev git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev.git
        git fetch --no-tags deller-fbdev fb-fixes
        git checkout f1a3b3c2b5b1b846963ffa5b4fddfaf8c9a4c985
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash drivers/video/console/

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

All warnings (new ones prefixed by >>):

>> drivers/video/console/sticore.c:1131:5: warning: no previous prototype for 'fb_is_primary_device' [-Wmissing-prototypes]
    1131 | int fb_is_primary_device(struct fb_info *info)
         |     ^~~~~~~~~~~~~~~~~~~~


vim +/fb_is_primary_device +1131 drivers/video/console/sticore.c

  1129	
  1130	/* check if given fb_info is the primary device */
> 1131	int fb_is_primary_device(struct fb_info *info)
  1132	{
  1133		struct sti_struct *sti;
  1134	
  1135		sti = sti_get_rom(0);
  1136	
  1137		/* if no built-in graphics card found, allow any fb driver as default */
  1138		if (!sti)
  1139			return true;
  1140	
  1141		/* return true if it's the default built-in framebuffer driver */
  1142		return (sti->info == info);
  1143	}
  1144	EXPORT_SYMBOL(fb_is_primary_device);
  1145	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp