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Date:      Thu, 22 Jun 2000 11:56:23 +0200 (MEST)
From:      Martin Husemann <martin@rumolt.teuto.de>
To:        pherman@frenchfries.net (Paul Herman)
Cc:        garyj@muc.de (Gary Jennejohn), freebsd-isdn@FreeBSD.ORG
Subject:   Re: i4b hangs during boot with ELSA Microlink
Message-ID:  <200006220956.e5M9uNK03012@rumolt.teuto.de>
In-Reply-To: <Pine.BSF.4.21.0006221130110.322-100000@bagabeedaboo.security.at12.de> from Paul Herman at "Jun 22, 2000 11:41:17 am"

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> I don't have random problems (ELSA Microlink PCI), my card hangs
> consistently.  You can depend on my card.  :)

Thats realy good: I didn't dig into it, because it was not easy to reproduce
for me. I'll send you a patch to try in a few days, maybe earlier...

The problem depends on the S0 bus. Ours seems to be quiet at least for half
a minute while booting. If your PBX is realy busy or sends random stuff
always, you'll receive a packet. If that comes in between attach and !cold
you're lost. I think this actually is a bug in the generic IPAC interrupt
handler - it may be triggered later too, that's what I'm experiencing: random
lockups.
 
> I think the key is finding out how to properly integrate the S0 bus
> detection into i4b.

Don't think so. See above. But of course the activation of the card
itself should be postponed to /dev/i4b open time (and it should be 
suspended on close or power management events or pc-card eject or...)
But thats something to do later.


Martin


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