Re: [PATCH 2/6] mfd: axp20x: Split the driver into core and i2c bits

[kbuild test robot]

Hi Chen-Yu,

[auto build test ERROR on next-20151013 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Chen-Yu-Tsai/mfd-axp20x-Add-support-for-RSB-based-AXP223/20151015-004334
config: x86_64-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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

warning: (MFD_AXP20X) selects MFD_AXP20X_I2C which has unmet direct dependencies (HAS_IOMEM && I2C=y)
   drivers/built-in.o: In function `axp20x_i2c_remove':
>> axp20x-i2c.c:(.text+0x22810b): undefined reference to `axp20x_device_remove'
   drivers/built-in.o: In function `axp20x_i2c_probe':
>> axp20x-i2c.c:(.text+0x22827d): undefined reference to `axp20x_match_device'
>> axp20x-i2c.c:(.text+0x2282ff): undefined reference to `__devm_regmap_init_i2c'
>> axp20x-i2c.c:(.text+0x22834c): undefined reference to `axp20x_device_probe'
   drivers/built-in.o: In function `axp20x_i2c_driver_init':
>> axp20x-i2c.c:(.init.text+0x1a8c9): undefined reference to `i2c_register_driver'
   drivers/built-in.o: In function `axp20x_i2c_driver_exit':
>> axp20x-i2c.c:(.exit.text+0x683): undefined reference to `i2c_del_driver'

sparse warnings: (new ones prefixed by >>)

>> drivers/iio/adc/axp288_adc.c:49:41: sparse: duplicate const 

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