linux-kernel - Re: linux-next: Tree for March 19 (wireless/p54)

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Date:	Thu, 19 Mar 2009 19:55:00 +0100
From:	Michael Buesch <mb@...sch.de>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: linux-next: Tree for March 19 (wireless/p54)

On Thursday 19 March 2009 19:49:48 Randy Dunlap wrote:
> Michael Buesch wrote:
> > On Thursday 19 March 2009 18:28:30 Randy Dunlap wrote:
> >> Stephen Rothwell wrote:
> >>> Hi all,
> >>>
> >>> Changes since 20090318:
> >>
> >> ERROR: "led_classdev_register" [drivers/net/wireless/p54/p54common.ko] undefined!
> >> ERROR: "led_classdev_unregister" [drivers/net/wireless/p54/p54common.ko] undefined!
> >>
> >> One possible option (fix) is to have CONFIG_MAC80211_LEDS also select
> >> LEDS_CLASS (that would build the missing functions).
> > 
> > Does p54 select CONFIG_MAC80211_LEDS? If that's the case, I think it should
> 
>   No, it doesn't.  p54common.c just has a large block of code that is
> surrounded by
> #ifdef CONFIG_MAC80211_LEDS
> ...
> #endif

Yeah. I do think that it'd be wrong for mac80211 to select LEDS_CLASS.
mac80211 implements the triggers and the lowlevel drivers implement the LED class device.
So mac80211 does not depend on LEDS_CLASS at all.

So p54 should probably introduce an automagic config option like b43 does, or it should do
something (ugly) like this:

#if defined(CONFIG_MAC80211_LEDS) && (defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE))
...
#endif
-- 
Greetings, Michael.
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