linux-kernel - Re: [PATCH v2] omapfb: dss: Handle return error in dss_init

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Message-ID: <201702100551.GNdbqJ7k%fengguang.wu@intel.com>
Date:   Fri, 10 Feb 2017 05:05:34 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     kbuild-all@...org, tomi.valkeinen@...com, b.zolnierkie@...sung.com,
        linux-omap@...r.kernel.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] omapfb: dss: Handle return error in dss_init_ports.

Hi Arvind,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.10-rc7 next-20170209]
[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/Arvind-Yadav/omapfb-dss-Handle-return-error-in-dss_init_ports/20170209-201712
config: arm-omap2plus_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

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

   drivers/video/fbdev/omap2/omapfb/dss/dss.c: In function 'dss_init_ports':
>> drivers/video/fbdev/omap2/omapfb/dss/dss.c:987:3: error: implicit declaration of function 'dss_uninit_ports' [-Werror=implicit-function-declaration]
      dss_uninit_ports(pdev);
      ^~~~~~~~~~~~~~~~
   drivers/video/fbdev/omap2/omapfb/dss/dss.c: At top level:
>> drivers/video/fbdev/omap2/omapfb/dss/dss.c:992:13: warning: conflicting types for 'dss_uninit_ports'
    static void dss_uninit_ports(struct platform_device *pdev)
                ^~~~~~~~~~~~~~~~
>> drivers/video/fbdev/omap2/omapfb/dss/dss.c:992:13: error: static declaration of 'dss_uninit_ports' follows non-static declaration
   drivers/video/fbdev/omap2/omapfb/dss/dss.c:987:3: note: previous implicit declaration of 'dss_uninit_ports' was here
      dss_uninit_ports(pdev);
      ^~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/dss_uninit_ports +987 drivers/video/fbdev/omap2/omapfb/dss/dss.c

   981			default:
   982				break;
   983			}
   984		} while ((port = omapdss_of_get_next_port(parent, port)) != NULL);
   985	
   986		if (ret)
 > 987			dss_uninit_ports(pdev);
   988	
   989		return ret;
   990	}
   991	
 > 992	static void dss_uninit_ports(struct platform_device *pdev)
   993	{
   994		struct device_node *parent = pdev->dev.of_node;
   995		struct device_node *port;

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