linux-kernel - Re: [PATCH] drivers: create a pin control subsystem v8

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Message-ID: <20111025082334.GA21616@sirena.org.uk>
Date:	Tue, 25 Oct 2011 09:23:35 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	Tony Lindgren <tony@...mide.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Stephen Warren <swarren@...dia.com>,
	Mike Frysinger <vapier.adi@...il.com>,
	Linus Walleij <linus.ml.walleij@...il.com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Barry Song <21cnbao@...il.com>, linux-kernel@...r.kernel.org,
	Joe Perches <joe@...ches.com>,
	Russell King <linux@....linux.org.uk>,
	Linaro Dev <linaro-dev@...ts.linaro.org>,
	Lee Jones <lee.jones@...aro.org>,
	David Brown <davidb@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org,
	Stijn Devriendt <highguy@...il.com>
Subject: Re: [PATCH] drivers: create a pin control subsystem v8

On Tue, Oct 25, 2011 at 10:17:19AM +0200, Grant Likely wrote:

> I've got no issue with a debugfs interface, although it would probably
> a good idea to put a big scary warning into klog when userspace starts
> manipulating pinctrl setting.  Maybe should taint the kernel too.

Yes, we really should taint the kernel for any non-mediated interface -
never mind instability this stuff can cause physical damage if you get
it wrong.
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