linux-kernel - Re: [PATCH] i2c: mux: remove duplicated i2c

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Message-ID: <201809270127.P2VKXe2q%fengguang.wu@intel.com>
Date:   Thu, 27 Sep 2018 01:52:33 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Luca Ceresoli <lucaceresoli77@...il.com>
Cc:     kbuild-all@...org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Luca Ceresoli <luca@...aceresoli.net>,
        Peter Rosin <peda@...ntia.se>, Wolfram Sang <wsa@...-dreams.de>
Subject: Re: [PATCH] i2c: mux: remove duplicated i2c_algorithm

Hi Luca,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc5 next-20180926]
[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/Luca-Ceresoli/i2c-mux-remove-duplicated-i2c_algorithm/20180926-200605
config: x86_64-randconfig-u0-09270057 (attached as .config)
compiler: gcc-5 (Debian 5.5.0-3) 5.4.1 20171010
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   In file included from drivers/i2c/muxes/i2c-mux-ltc4306.c:15:0:
>> include/linux/i2c-mux.h:39:23: error: field 'algo' has incomplete type
     struct i2c_algorithm algo;
                          ^

vim +/algo +39 include/linux/i2c-mux.h

    31	
    32	struct i2c_mux_core {
    33		struct i2c_adapter *parent;
    34		struct device *dev;
    35		unsigned int mux_locked:1;
    36		unsigned int arbitrator:1;
    37		unsigned int gate:1;
    38	
  > 39		struct i2c_algorithm algo;
    40		void *priv;
    41	
    42		int (*select)(struct i2c_mux_core *, u32 chan_id);
    43		int (*deselect)(struct i2c_mux_core *, u32 chan_id);
    44	
    45		int num_adapters;
    46		int max_adapters;
    47		struct i2c_adapter *adapter[0];
    48	};
    49	

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