linux-kernel - Re: [PATCH 2/3] of/overlay: sysfs based ABI for dt overlays

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Date:   Mon, 19 Dec 2016 10:34:10 +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 2/3] of/overlay: sysfs based ABI for dt overlays

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-r0-12190124 (attached as .config)
compiler: gcc-5 (Debian 5.4.1-2) 5.4.1 20160904
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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

   drivers/of/ov_sysfs.c: In function 'of_create_overlay_from_file':
   drivers/of/ov_sysfs.c:69:12: error: implicit declaration of function 'of_fdt_unflatten_tree' [-Werror=implicit-function-declaration]
     overlay = of_fdt_unflatten_tree((unsigned long *) buffer, NULL, NULL);
               ^
>> drivers/of/ov_sysfs.c:69:10: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     overlay = of_fdt_unflatten_tree((unsigned long *) buffer, NULL, NULL);
             ^
   cc1: some warnings being treated as errors

vim +/of_fdt_unflatten_tree +69 drivers/of/ov_sysfs.c

    63		    offset < fdt_totalsize(buffer)) {
    64			pr_err("OF: Size of %s does not match header information\n",
    65			       path);
    66			ret = -EINVAL;
    67			goto err_file_read;
    68		}
  > 69		overlay = of_fdt_unflatten_tree((unsigned long *) buffer, NULL, NULL);
    70		if (overlay == NULL) {
    71			pr_err("OF: Cannot unflatten %s\n", path);
    72			ret = -EINVAL;

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