Subject: Re: on builds/randconfigs (was: [PATCH -next] thermal: depends on NET)

From: Andrew Morton <[email-masked]>
Date: Wed, 12 Jan 2011 13:18:00 -0800

On Wed, 12 Jan 2011 13:35:10 -0500 (EST)
Len Brown <[email-masked]> wrote:

> Do I care about the phantom configs that would be possible
> if these false dependencies were not in place.  No,
> not until somebody invents such a system,
> and may be not even then.
> 
> Is there a user out there on LKML who can dream up
> a use for one of these phantom configs and claim that
> his life will end if he'd prevented from building it?
> Sure.  Does he suffer from a total lack of perspective?
> Yes.

These unusable config combinations should be prevented via Kconfig. 
That prevents users from selecting them, which otherwise adds to
our workload and to theirs.  It also prevents false-positives
during our useful randconfig testing.