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SubjectRe: [stable] [PATCH] x86: Reserve FIRST_DEVICE_VECTOR in used_vectors bitmap
On Fri, Oct 10, 2008 at 09:50:38PM +0100, Alan Cox wrote:
> On Fri, 10 Oct 2008 13:41:33 -0700
> Greg KH <greg@kroah.com> wrote:
>
> > On Fri, Oct 10, 2008 at 01:35:48PM -0700, H. Peter Anvin wrote:
> > > Greg KH wrote:
> > >> Is there a problem with being assigned to IRQ0 in situations like this?
> > >
> > > On PCs, IRQ 0 is dedicated to use for the PIT.
> >
> > Ah, I didn't realize it couldn't be shared.
>
> And more importantly dev->irq == 0 or IRQ == 0 to anything but arch
> internal code means "no interrupt line".

I thought we had changed that a while ago, as some arches had 0 as a
valid irq line.

Anyway, thanks all for the information, I appreciate it.

greg k-h


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