I just ran across this problem as well. I have a PCI bus
with a DPT RAID board and a 3COM ethernet board trying to
share IRQ 11. There were no software options or hardware
jumpers to change the IRQ selection.
To solve the problem, I moved the ethernet board to a
different empty slot. TA DA! It now magically uses IRQ 5
and the SIOCSIFFLAGS problem disappeared.
On Fri, 23 May 1997, Raul Miller wrote:
> [Aside: I think I sent a message about ethernet configuration
> with a subject line from an X configuration problem. My prior
> message on the subject was a bug report about a non-bug. Third
> strike and I'm out, but by jove I think I've got it.]
> Turns out I've got a buslogic 946C and a 32 bit lance card
> trying to share IRQ 11. I think this is a kernel problem.
> Anyone know the workaround?
> Date: Fri, 23 May 1997 15:35:53 -0500
> From: Eric Dittman <DITTMAN@skitzo.dseg.ti.com>
> To: email@example.com
> Subject: RE: Shared Interrupts
> >Did you ever get a solution to this problem? I'm running
> >into something similar (where I'm getting SIOCSIFFLAGS: Try again) and
> >don't know what to do about it.
> It turned out that Linux has two incompatible methods of sharing
> interrupts. The SCSI drivers tend to use one method and the
> Ethernet drivers tend to use the other method. Because of this
> (and I don't think it has changed) the SCSI card and Ethernet
> card can't share interrupts.
> Eric Dittman Texas Instruments - Component Test Facility
> firstname.lastname@example.org (214) 462-4292
> Disclaimer: Not even my opinions. I found them by the side of the road.
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