linux-kernel - Re: [PATCH] regulator: core: Return error in get optional stub

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Message-ID: <20140418141214.GM12304@sirena.org.uk>
Date:	Fri, 18 Apr 2014 15:12:14 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Tim Kryger <tim.kryger@...aro.org>
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] regulator: core: Return error in get optional stub

On Thu, Apr 17, 2014 at 11:55:24AM -0700, Tim Kryger wrote:
> Drivers that call regulator_get_optional are tolerant to the absence of
> that regulator.  By modifying the value returned from the stub function
> to match that seen when a regulator isn't present, callers can wrap the
> regulator logic with an IS_ERR based conditional even if they happen to
> call regulator_is_supported_voltage.  This improves efficiency as well
> as eliminates the possibility for a very subtle bug.

Applied, thanks.

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