linux-kernel - Re: [PATCH] platform/chrome: cros_ec: Make cros_ec

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Date:   Wed, 20 Oct 2021 21:28:46 +0800
From:   kernel test robot <lkp@...el.com>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Guenter Roeck <groeck@...omium.org>,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH] platform/chrome: cros_ec: Make cros_ec_unregister()
 return void

Hi "Uwe,

I love your patch! Yet something to improve:

[auto build test ERROR on chrome-platform/for-next]
[also build test ERROR on v5.15-rc6 next-20211020]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Uwe-Kleine-K-nig/platform-chrome-cros_ec-Make-cros_ec_unregister-return-void/20211020-044024
base:   https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git for-next
config: arm64-randconfig-r001-20211019 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 92a0389b0425a9535a99a0ce13ba0eeda2bce7ad)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/d2c1956b7b20b3b031619b800d1a3fffe98562fa
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Uwe-Kleine-K-nig/platform-chrome-cros_ec-Make-cros_ec_unregister-return-void/20211020-044024
        git checkout d2c1956b7b20b3b031619b800d1a3fffe98562fa
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 

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

All errors (new ones prefixed by >>):

>> drivers/platform/chrome/cros_ec.c:311:2: error: void function 'cros_ec_unregister' should not return a value [-Wreturn-type]
           return 0;
           ^      ~
   1 error generated.


vim +/cros_ec_unregister +311 drivers/platform/chrome/cros_ec.c

4ab6174e8cdb00 drivers/mfd/cros_ec.c             Simon Glass            2013-02-25  296  
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  297  /**
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  298   * cros_ec_unregister() - Remove a ChromeOS EC.
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  299   * @ec_dev: Device to unregister.
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  300   *
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  301   * Call this to deregister a ChromeOS EC, then clean up any private data.
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  302   *
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  303   * Return: 0 on success or negative error code.
c9b465683a5542 drivers/platform/chrome/cros_ec.c Gwendal Grignou        2019-11-19  304   */
d2c1956b7b20b3 drivers/platform/chrome/cros_ec.c Uwe Kleine-König       2021-10-19  305  void cros_ec_unregister(struct cros_ec_device *ec_dev)
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  306  {
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  307  	if (ec_dev->pd)
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  308  		platform_device_unregister(ec_dev->pd);
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  309  	platform_device_unregister(ec_dev->ec);
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  310  
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02 @311  	return 0;
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  312  }
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  313  EXPORT_SYMBOL(cros_ec_unregister);
7aa703bb882438 drivers/mfd/cros_ec.c             Enric Balletbo i Serra 2019-09-02  314  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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