Re: CardBus bridge and wireless card plugged into it use same IRQ: Correct?
- To: Benjamin Herrenschmidt <email@example.com>
- Cc: debian-powerpc list <firstname.lastname@example.org>
- Subject: Re: CardBus bridge and wireless card plugged into it use same IRQ: Correct?
- From: Wolfgang Pfeiffer <email@example.com>
- Date: Thu, 4 Aug 2005 16:12:46 +0200
- Message-id: <20050804141246.GB25245@localhost>
- In-reply-to: <1123148388.30257.57.camel@gaston>
- References: <20050803164252.GA25245@localhost> <1123148388.30257.57.camel@gaston>
On Thu, Aug 04, 2005 at 11:39:47AM +0200, Benjamin Herrenschmidt wrote:
> On Wed, 2005-08-03 at 18:42 +0200, Wolfgang Pfeiffer wrote:
> > [ ... ]
> > The above details the fact (or better: I hope it's a fact :) that
> > "Ralink RT2500" (a wi-fi chip) is connected to the PCMCIA slot
> > ("CardBus bridge") of a Titanium IV ..
> > Logic might suggest the connector (the "bridge") can/must use the same
> > interrupt as the wireless card that is connected to the former, but
> > I'm not sure on it. So if someone with more knowledge could enlighten
> > me a bit.
> They are using both IRQ 58. What's wrong with that ?
[ ... ]
Thanks for the question, which, as it seems, is also an answer ... :)
My early computer lessons, IIRC, made me believe that 2 devices should
not share the same IRQ ... I wasn't sure, whether this is still valid:
Windows <whatever-version>, please see:
As I said: In this case, where the radiocard shares the irq with the
bridge it is connected to I thought it might not hurt. But I was not
sure on that ...
I'm trying to set up a little wifi-network, and it does not always
work as it should: With my questions I simply wanted to make sure the
IRQ "issue" actually isn't one, and that it is not the source of my
Thanks a lot for responding, Ben ..