linux-kernel - Re: [patch 2.6.24-rc6-mm 1/9] gpiolib: add drivers/gpio directory

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Date:	Sat, 29 Dec 2007 20:03:09 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	David Brownell <david-b@...bell.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Jean Delvare <khali@...ux-fr.org>,
	eric miao <eric.y.miao@...il.com>
Subject: Re: [patch 2.6.24-rc6-mm 1/9] gpiolib: add drivers/gpio directory

On Sat, Dec 29, 2007 at 10:19:39AM -0800, David Brownell wrote:
> On Friday 28 December 2007, Sam Ravnborg wrote:
> > kconfig symbols that are "select" targets should be named "HAVE_" so in
> > this case you could use HAVE_GPIO_LIB.
> > This is by convention only but introduced to make it visible that this is
> > a config symbol supposed to be selected.
> 
> Not widely adopted yet, but of course such things take time.

Yes - which is why I am a bit more careful to note it.
> 
> 
> > Then on top of that the HAVE_ symbols should not have any dependencies
> > so we avoid that "select" selects a symbol where the dependencies are
> > not fulfilled.
> 
> That limitation of "select" still seems more buglike to me than
> anything else, FWIW.  Not that it matters in this case.
But I had not yet figured out how to fix it - and limiting select
to symbols without dependencies avoid the worst offendes/abusers.

> Pretty much like the folowing, then?
> 
>   - Use "ccflags-$(CONGIF_DEBUG_GPIO) += -DDEBUG" instead of
>     those ugly (but traditional) conditionals.

s/CONGIF/CONFIG/


>  
> +ccflags-$(CONGIF_DEBUG_GPIO)	+= -DDEBUG
> +
s/CONGIF/CONFIG/

Otherwise OK.

	Sam
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