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  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
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