linux-kernel - Re: [PATCH 05/13] nvmem: change the signature of nvmem

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Date:   Fri, 7 Sep 2018 12:57:49 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     kbuild-all@...org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Joachim Eastwood <manabian@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Jonathan Corbet <corbet@....net>, Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        David Lechner <david@...hnology.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>, Alban Bedel <albeu@...e.fr>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 05/13] nvmem: change the signature of nvmem_unregister()

Hi Bartosz,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc2 next-20180906]
[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/Bartosz-Golaszewski/nvmem-rework-of-the-subsystem-for-non-DT-users/20180907-112400
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=xtensa 

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

   drivers//nvmem/mxs-ocotp.c: In function 'mxs_ocotp_remove':
>> drivers//nvmem/mxs-ocotp.c:202:9: error: void value not ignored as it ought to be
     return nvmem_unregister(otp->nvmem);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers//nvmem/mxs-ocotp.c:203:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +202 drivers//nvmem/mxs-ocotp.c

c01e9a11 Stefan Wahren 2015-09-30  195  
c01e9a11 Stefan Wahren 2015-09-30  196  static int mxs_ocotp_remove(struct platform_device *pdev)
c01e9a11 Stefan Wahren 2015-09-30  197  {
c01e9a11 Stefan Wahren 2015-09-30  198  	struct mxs_ocotp *otp = platform_get_drvdata(pdev);
c01e9a11 Stefan Wahren 2015-09-30  199  
c01e9a11 Stefan Wahren 2015-09-30  200  	clk_unprepare(otp->clk);
c01e9a11 Stefan Wahren 2015-09-30  201  
c01e9a11 Stefan Wahren 2015-09-30 @202  	return nvmem_unregister(otp->nvmem);
c01e9a11 Stefan Wahren 2015-09-30 @203  }
c01e9a11 Stefan Wahren 2015-09-30  204  

:::::: The code at line 202 was first introduced by commit
:::::: c01e9a11ab6f3096a54574c3224d8732a374f135 nvmem: add driver for ocotp in i.MX23 and i.MX28

:::::: TO: Stefan Wahren <stefan.wahren@...e.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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