Re: Add a "enable" sysfs attribute to the pci devices to allow userspace (Xorg) to enable devices without doing foul direct access

[Martin Mares]

Hello!

> > This is yet another way that user space can mess up the kernel. If VGA
> > routing is changes under fbdev (my attribute notifies fbdev, the fbdev
> > code for processing the notification did get checked in) then the
> > console will screw up.
> 
> And this change allows userland to avoid doing that.

Could you explain how?  I don't see how adding a "enable" attribute
to sysfs can solve these problems.

I agree with Arjan that the attribute could be useful for some special
tools, but using it in X is likely to be utterly wrong.

				Have a nice fortnight
-- 
Martin `MJ' Mares   <mj@xxxxxx>   http://atrey.karlin.mff.cuni.cz/~mj/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
A mathematician is a machine for converting coffee into theorems.
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