linux-kernel - Re: [PATCH 1/3] of/overlay: add API function to count and pop last

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Date:   Mon, 19 Dec 2016 10:15:08 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Heinrich Schuchardt <xypron.glpk@....de>
Cc:     kbuild-all@...org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Frank Rowand <frowand.list@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Heinrich Schuchardt <xypron.glpk@....de>
Subject: Re: [PATCH 1/3] of/overlay: add API function to count and pop last

Hi Heinrich,

[auto build test ERROR on linus/master]
[also build test ERROR on next-20161216]
[cannot apply to glikely/devicetree/next robh/for-next v4.9]
[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/Heinrich-Schuchardt/of-overlay-sysfs-based-ABI-for-dt-overlays/20161219-093606
config: i386-randconfig-s1-201651 (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 errors (new ones prefixed by >>):

   In file included from include/linux/irqdomain.h:34:0,
                    from include/linux/i2c.h:33,
                    from include/uapi/linux/fb.h:5,
                    from include/linux/fb.h:5,
                    from include/linux/vga_switcheroo.h:34,
                    from drivers/gpu/drm/i915/i915_drv.c:40:
>> include/linux/of.h:1295:12: error: 'of_overlay_count' defined but not used [-Werror=unused-function]
    static int of_overlay_count(void)
               ^~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors

vim +/of_overlay_count +1295 include/linux/of.h

  1289	
  1290	int of_overlay_notifier_register(struct notifier_block *nb);
  1291	int of_overlay_notifier_unregister(struct notifier_block *nb);
  1292	
  1293	#else
  1294	
> 1295	static int of_overlay_count(void)
  1296	{
  1297		return -ENOTSUPP;
  1298	}

---
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