From owner-freebsd-hackers  Mon Dec 11 02:27:18 1995
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Date: Mon, 11 Dec 1995 21:23:57 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199512111023.VAA03842@godzilla.zeta.org.au>
To: cimaxp1!jb@werple.net.au, hackers@freebsd.org
Subject: Re: Handling hardware interrupts in lkm device drivers.
Cc: jb@cimlogic.com.au
Sender: owner-hackers@freebsd.org
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>I was thinking about trying to register_intr() my interrupt function, but I
>see that register_intr() wants to know a device_id and I don't have one
>to give it.  Am I barking up the wrong tree?

The device id is only used to decide where to count interrupts.  Other
id'less (pci) drivers pretend that they have an id of 0 so that their
interrupts are (msi)counted as clock interrupts.

Bruce