Re: randconfig build error with next-20150812, in drivers/i2c/busses/i2c-i801.c

From: Matt Fleming
Date: Fri Sep 25 2015 - 09:38:07 EST


On Fri, 25 Sep, at 09:36:10AM, Jean Delvare wrote:
> On Wed, 12 Aug 2015 08:42:18 -0700, Jim Davis wrote:
> > Building with the attached random configuration file,
> >
> > drivers/built-in.o: In function `dmi_check_onboard_devices':
> > i2c-i801.c:(.text+0x126b36): undefined reference to `i2c_new_device'
> > drivers/built-in.o: In function `i801_remove':
> > i2c-i801.c:(.text+0x126b86): undefined reference to `i2c_del_adapter'
> > drivers/built-in.o: In function `i801_probe':
> > i2c-i801.c:(.text+0x127d08): undefined reference to `i2c_add_adapter'
> > i2c-i801.c:(.text+0x127d6e): undefined reference to `i2c_new_device'
>
> Sorry for the late reply. The error is caused by the following
> combination of options:
>
> CONFIG_I2C=m
> CONFIG_I2C_I801=y
>
> I can reproduce it even with mainline now. This is caused by
> CONFIG_ITCO_WDT=y, which selects CONFIG_I2C_I801=y without selecting
> its dependencies (CONFIG_I2C.)
>
> Thanks for reporting, I'll post a fix shortly.

Sorry that you got caught up in this build error Jean.

Guenter (Cc'd) posted a fix here,

https://lkml.kernel.org/r/1441978088-27288-1-git-send-email-linux@xxxxxxxxxxxx

--
Matt Fleming, Intel Open Source Technology Center
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