Interrupt storm detected (was: Re: hang after after update: "adX: FAILURE - already active DMA on this device" (ICH5 system))

Bruce Evans bde at
Wed Jun 9 19:19:46 GMT 2004

On Wed, 9 Jun 2004, Alexander Leidinger wrote:

> On Tue, 8 Jun 2004 18:36:25 +0200
> Johan Pettersson <manlix at> wrote:
> > Todays -CURRENT works just fint. It even works as it should with HTT
> > enabled now. Wee! :) Can it be the recent ACPI-changes that fixed it?
> Confirmed.
> BTW.: I get "Interrupt storm detected on "irq18: uhci2+"; throttling
> interrupt source", is anybody interested in a dmesg of a system?

I fixed interrupt storm handling to actually work in more cases.
However, if you get the "Interrupt strorm detected" message, then you
also get low performance for devices on that interrupt, especially
after my changes.


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