linux-kernel - Re: 2.6.23-git Kconfig regression

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Date:	Fri, 19 Oct 2007 20:21:40 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Randy Dunlap <rdunlap@...otime.net>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Brownell <david-b@...bell.net>
Subject: Re: 2.6.23-git Kconfig regression

On Fri, 19 Oct 2007 19:55:35 -0700 Randy Dunlap wrote:

> On Fri, 19 Oct 2007 19:01:09 -0700 Randy Dunlap wrote:
> 
> > >>> I noticed a regression, visible in the drivers/usb/gadget Kconfig;
> > >>> it seems to be quite recent.
> > >>>
> > >>> ...
> > >> Hm, it does look very odd.  It looks like it has something to
> > >> do with <choice> working differently for some reason.
> > >>
> > >> In xconfig, I set all of the View Options and when I click on one
> > >> of the periph. controllers, it says
> > >>
> > >> 	depends on =y && PCI
> > > 
> > > That's what I saw too.  Looked dubious ... 
> > > 
> > > 
> > >> but if I back up to -git7, it says
> > >>
> > >> 	depends on <choice> && PCI
> > > 
> > > And that git7 thing doesn't look _quite_ so odd.  Did git7 actually
> > > let you configure a modular GOKU (for example), i.e. work correctly?
> > 
> > Yes, -git9 does.
> > 
> > Looks to me like it broke on -git10.  -git9 is OK.
> > 
> > >> I'll keep looking.
> > > 
> > > Thanks.  Kconfig is one of the areas I prefer to let others
> > > be the experts.  :)
> 
> [hm, odd email problems, changing SMTP]
> 
> David,
> 
> Just a small update.
> 
> If I set USB gadget support to Y instead of M and peripheral
> controller menu item to Y instead of M, then I can select any of the
> 4 periph. controllers that are available to me.  (on -git14)
> I don't know why it's like this though.

David,

My (quick, meaning that I may have missed something) testing
indicates that the problem is in the patches attached.

Can you revert them and test that?

>From git:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a5bf3d891a6a0fb5aa122792d965e3774108b923

Change kconfig behavior so that mixing bool and tristate config settings in
a choice is possible and has the desired effect of offering just the
tristate options individually if the choice gets set to M, and a normal
boolean selection if the choice gets set to Y.

Odd, I don't recall seeing this patch...

---
~Randy

View attachment "git9-10.diff" of type "text/x-patch" (2558 bytes)