On Wed, Oct 28, 2015 at 12:38:31AM -0500, Michael Welling wrote:

On Wed, Oct 28, 2015 at 12:37:35PM +0800, kbuild test robot wrote:

quoted

Hi Michael,

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

url:    https://github.com/0day-ci/linux/commits/Michael-Welling/Input-tsc2005-Add-support-for-tsc2004/20151028-082017
config: x86_64-randconfig-s1-10281141 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `tsc2005_cmd':
   tsc2005.c:(.text+0x21a352): undefined reference to `i2c_smbus_write_byte'
   drivers/built-in.o: In function `tsc200x_probe_common':

quoted

quoted

tsc2005.c:(.text+0x21b554): undefined reference to `__devm_regmap_init_i2c'

   drivers/built-in.o: In function `tsc2005_modinit':
   tsc2005.c:(.init.text+0xe2b2): undefined reference to `i2c_register_driver'
   drivers/built-in.o: In function `tsc2005_exit':
   tsc2005.c:(.exit.text+0xf4c): undefined reference to `i2c_del_driver'

Sorry Mr. Robot but this configuration does not make sense.

How is CONFIG_REGMAP_I2C=m set without CONFIG_I2C being selected?
CONFIG_REGMAP_I2C depends on CONFIG_I2C.

The call to devm_regmap_init_i2c() in tsc200x_probe_common() is not
protected by #ifdef guard and we do not have stub for it in case of
!CONFIG_I2C.

Thanks.

-- 
Dmitry