Weird PCI interrupt delivery problem

M. Warner Losh imp at
Fri Dec 2 04:08:21 GMT 2005

In message: <20051202022014.GC15424 at nowhere>
            Craig Boston <craig at> writes:
: On Thu, Dec 01, 2005 at 07:11:10PM -0700, M. Warner Losh wrote:
: > In message: <20051202013146.GA15424 at nowhere>
: >             Craig Boston <craig at> writes:
: > : I suspect that really old 16-bit PCMCIA cards with non-sharable
: > : interrupts wouldn't work, but does NEWCARD even support those anyway?
: > 
: > Yes.  There's no such thing as a PCMCIA card whose interrupts are
: > non-sharable.  NEWCARD works great with them.
: Heh, guess I shouldn't believe what I read on pages hosted at
: :)
: (found via google search for "cardbus interrupt routing")
: It's probably talking about legacy device drivers that didn't know how
: to properly share IRQs.

You are right.  It is talking about Legacy drivers that do the wrong
thing when they get an interrupt that's not for them.


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