On Fri, Sep 07, 2018 at 08:06:52AM +0800, kbuild test robot wrote: > Hi Charles, > > I love your patch! Yet something to improve: > > [auto build test ERROR on ljones-mfd/for-mfd-next] > [also build test ERROR on v4.19-rc2 next-20180906] > [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/Charles-Keepax/mfd-lochnagar-Add-support-for-the-Cirrus-Logic-Lochnagar/20180907-010308 > base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next > config: alpha-allmodconfig (attached as .config) > compiler: alpha-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > GCC_VERSION=7.2.0 make.cross ARCH=alpha > > All errors (new ones prefixed by >>): > > drivers/mfd/lochnagar-i2c.o: In function `lochnagar_i2c_probe': > >> (.text+0x4ec): undefined reference to `__devm_regmap_init_i2c' > (.text+0x500): undefined reference to `__devm_regmap_init_i2c' Sorry seems I am missing a select REGMAP_I2C in the Kconfig will fix up for v2 after any other comments. > drivers/mfd/lochnagar-i2c.o: In function `lochnagar_i2c_init': > >> (.init.text+0x10): undefined reference to `i2c_register_driver' > (.init.text+0x24): undefined reference to `i2c_register_driver' Not sure what is causing this one there is a depends on I2C in there will have a look and see if I can figure that out. Thanks, Charles