Re: [v4l-dvb-maintainer] 2.6.25 regression: VIDEO_DEV=y/m, I2C=ncompile error

From: Mauro Carvalho Chehab
Date: Mon Jan 28 2008 - 06:49:52 EST


> Maybe the kernel headers should provide a couple macros for testing
> configs, since people get it wrong over and over again?
>
> #define CONFIG_ON(x) (defined(CONFIG_##x) || defined(CONFIG_##x##_MODULE))
> #define CONFIG_AVAIABLE(x) (defined(CONFIG_##x) || (defined(MODULE) && defined(CONFIG_##x##_MODULE)))

Seems a good idea to me.
>
> Not sure what to do about VIDEO_DEV=y, I2C=m. It should be possible except
> for this function.

I don't see much sense on allowing v4l2-common being in-kernel, while having
I2C as module. Also, creating a separate module for just a single function
seems to be overkill.

IMO, in this specific case, v4l2-common should also be a module. Not sure,
however,the better syntax on Kconfig. Once, someone suggested a very weird
syntax, like:

depends on I2C if I2C


Cheers,
Mauro
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