On 10/05/2010 02:25 PM, Matthew Garrett wrote: > On Tue, Oct 05, 2010 at 02:18:20PM -0400, Nathaniel McCallum wrote: > >> Agreed, the hardware may lie, but the kernel is the arbiter of truth, at >> least in this case. > > The range of ways that lid switches can be broken is large. One machine > I've seen tries to read from a GPIO that's off by 16, because Intel's > GPIO/GPE numbering is complicated. Another generates an event on lid > close and generates a different event on lid open, but there's no > handler for the open event and so the state variable never gets updated. > The world is full of bad hardware and the kernel can't always be there > to shield userspace from reality. Of course, but where possible it should sanitize. Userspace is like a teenager, you expose them to just enough reality to know what's out there, but in general they have no idea just how scary it really is. :) Nathaniel -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
