From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: [PATCH 2/2 v3] net/smsc911x: Add regulator support
Date: Thu, 27 Oct 2011 23:42:41 +0200
Message-ID: <20111027214241.GA11534@opensource.wolfsonmicro.com>
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Cc: Linus Walleij <linus.walleij@stericsson.com>,
	netdev@vger.kernel.org,
	Steve Glendinning <steve.glendinning@smsc.com>,
	Mathieu Poirer <mathieu.poirier@linaro.org>,
	Robert Marklund <robert.marklund@stericsson.com>,
	Paul Mundt <lethal@linux-sh.org>, linux-sh@vger.kernel.org,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Tony Lindgren <tony@atomide.com>, linux-omap@vger.kernel.org,
	uclinux-dist-devel@blackfin.uclinux.org,
	Linus Walleij <linus.walleij@linaro.org>
To: Mike Frysinger <vapier@gentoo.org>
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On Thu, Oct 27, 2011 at 10:59:14PM +0200, Mike Frysinger wrote:

> i saw that !CONFIG_REGULATOR works great.  my concern is that these
> boards don't define any regulators for smsc resources, so if
> CONFIG_REGULATOR is enabled to test out unrelated daughter cards, i
> don't want the network driver suddenly failing.  Linus' comments
> suggest that this is what would happen unless each board file has its
> smsc platform resources extended.  maybe i misunderstood what he was saying ?

That's the case that's handled by CONFIG_REGULATOR_DUMMY - if the lookup
fails the core will provide a virtual regulator to the consumer.  If
you're running a setup like that you probably want to enable dummy
regulators anyway.