Out of curiosity, what happens on a kernel without support
	for the ethernet portion of the card?

		David/absolute		-- www.netbsd.org: No hype required --


On Wed, 3 Jan 2001, Douglas Carmichael wrote:

> On Wed, Jan 03, 2001 at 05:19:50PM -0500, Bill Sommerfeld wrote:
> > > How should I go about finding the source of my problem? (it seems to
> > > happen whenever I access the modem portion of the card, but not the
> > > Ethernet)
> > > The Ethernet appears as a 3c574TX and the modem appears as a standard
> > > modem.
> >
> > One known bug is that there's a general interrupt sharing
> > bug.. interrupt sharing between interrupts above splhigh() (the modem,
> > running at splhigh()) and below splhigh() (the ethernet side) is not
> > likely to work.
> >
> > There's some chance of things working if the ethernet interface is
> > ifconfig'ed down before you attempt to use the modem.
> >
> > 					- Bill
>
> This happens (the dropping to DDB) even when the Ethernet isn't being
> used.
>
> I tried an old modem-only card and it worked fine without a drop to DDB,
> so I guess it's the interrupt sharing bug. When will a patch be available
> to fix it? Are there any temporary workarounds I can use?
>
> P.S. the Ethernet portion works flawlessly on its own at 100Mbps full
> duplex.
>
>