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

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Date:	Wed, 9 Jan 2013 12:02:13 +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:
> On Wed, Jan 09, 2013 at 11:56:55AM +0000, Arnd Bergmann wrote:

> > 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?

The build error would have come only from selecting LEDS_TRIGGERS without
also selecting NEW_LEDS and LEDS_CLASS. I haven't actually tried if that
results in a hard error, but you'd get at least a Kconfig warning.

	Arnd
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