linux-kernel - Re: [Intel-gfx] [PATCH 18/33] fbdev: make unregister/unlink functions not fail

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Message-ID: <201905210355.ba4iPyxu%lkp@intel.com>
Date:   Tue, 21 May 2019 03:08:02 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Daniel Vetter <daniel.vetter@...ll.ch>
Cc:     kbuild-all@...org,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        linux-fbdev@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Mikulas Patocka <mpatocka@...hat.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Peter Rosin <peda@...ntia.se>
Subject: Re: [Intel-gfx] [PATCH 18/33] fbdev: make unregister/unlink
 functions not fail

Hi Daniel,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.2-rc1 next-20190520]
[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/Daniel-Vetter/fbcon-notifier-begone/20190521-021841
config: x86_64-randconfig-x004-201920 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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

All errors (new ones prefixed by >>):

   drivers/video/fbdev/neofb.c: In function 'neofb_remove':
>> drivers/video/fbdev/neofb.c:2130:7: error: void value not ignored as it ought to be
      if (unregister_framebuffer(info))
          ^~~~~~~~~~~~~~~~~~~~~~

vim +2130 drivers/video/fbdev/neofb.c

^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2117  
48c68c4f drivers/video/neofb.c Greg Kroah-Hartman 2012-12-21  2118  static void neofb_remove(struct pci_dev *dev)
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2119  {
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2120  	struct fb_info *info = pci_get_drvdata(dev);
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2121  
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2122  	DBG("neofb_remove");
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2123  
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2124  	if (info) {
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2125  		/*
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2126  		 * If unregister_framebuffer fails, then
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2127  		 * we will be leaving hooks that could cause
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2128  		 * oopsen laying around.
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2129  		 */
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16 @2130  		if (unregister_framebuffer(info))
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2131  			printk(KERN_WARNING
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2132  			       "neofb: danger danger!  Oopsen imminent!\n");
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2133  
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2134  		neo_unmap_video(info);
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2135  		fb_destroy_modedb(info->monspecs.modedb);
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2136  		neo_unmap_mmio(info);
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2137  		neo_free_fb_info(info);
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2138  	}
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2139  }
^1da177e drivers/video/neofb.c Linus Torvalds     2005-04-16  2140  

:::::: The code at line 2130 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
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