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

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Message-Id: <201301091156.55644.arnd@arndb.de>
Date:	Wed, 9 Jan 2013 11:56:55 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	"Russell King - ARM Linux" <linux@....linux.org.uk>
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 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.

It may be a good use case for the "suggest" Kconfig statement I brought
up before: Rather than having snowball hard enable the LEDS subsystem,
it could 'suggest LEDS_CORE' in order to change the default for that
option, but still let users disable it if they want to.

	Arnd
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