[PATCH] drivers: create a pin control subsystem v8

[Mark Brown]

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.