Messages in this thread | | | Date | Fri, 10 Oct 2008 21:50:38 +0100 | From | Alan Cox <> | Subject | Re: [stable] [PATCH] x86: Reserve FIRST_DEVICE_VECTOR in used_vectors bitmap |
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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".
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