2013-03-23 17:57:05

by Corey Richardson

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Subject: clk: x86: build failure

With the attached config, I get the following build failure:

LD init/built-in.o
drivers/built-in.o:clk-lpt.c:function v4l2_device_unregister: error:
undefined reference to 'i2c_unregister_device'

This is after a make oldconfig, perhaps a missed dependency in Kconfig?


Attachments:
config-napo.gz (15.15 kB)

2013-03-24 06:40:57

by Mika Westerberg

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Subject: Re: clk: x86: build failure

On Sat, Mar 23, 2013 at 01:57:01PM -0400, Corey Richardson wrote:
> With the attached config, I get the following build failure:
>
> LD init/built-in.o
> drivers/built-in.o:clk-lpt.c:function v4l2_device_unregister: error:
> undefined reference to 'i2c_unregister_device'

I get following with your config:

LD init/built-in.o
drivers/built-in.o: In function `v4l2_device_unregister':
(.text+0x1186cb): undefined reference to `i2c_unregister_device'
make: *** [vmlinux] Error 1

and it looks like it wants to build in videodev.o (which provides
v4l2_device_unregister()):

CONFIG_VIDEO_DEV=y

This function calls i2c_unregister_device() if IS_ENABLED(CONFIG_I2C) but
i2c support is compiled as a module:

CONFIG_I2C=m

which explains the link error.

However, this has nothing to do with clk-lpt.c or anything related to clock
framework as far as I can tell.