linux-kernel - Re: [PATCH 2/3] ARM: ux500: Turn on the 'heartbeat' LED trigger

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Date:	Wed, 9 Jan 2013 11:59:11 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Lee Jones <lee.jones@...aro.org>, sameo@...ux.intel.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linus.walleij@...ricsson.com
Subject: Re: [PATCH 2/3] ARM: ux500: Turn on the 'heartbeat' LED trigger

On Wed, Jan 09, 2013 at 11:56:55AM +0000, Arnd Bergmann wrote:
> On Wednesday 09 January 2013, Russell King - ARM Linux wrote:
> > > If so, that's wrong, as it covers many more boards than just Snowball
> > > and this is only applicable on the Snowball board. So how else can
> > > I enable this feature?
> > 
> > And why is it wrong to enable an optional feature in a defconfig which some
> > boards using that defconfig may want?
> > 
> > It's less wrong than forcing user selectable options to be mandatorily
> > selected.
> 
> Right. The change I suggested fixes the build errors but doesn't actually
> make the intended behavior correct. Just using a configuration file is the
> right solution here.

Hang on a moment: if the lack of the LEDs support leads to build errors,
doesn't that mean there's missing conditional compilation?
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