[ltp] irq assignments on i1492

[Amy Fong]

In article <395258EE.745BB399@switch.com>,
Michael B. Haynie <linux-thinkpad@www.bm-soft.com> wrote:
>Amy:
>
>I too was puzzled by this until I realized that IRQ11 seems to be
>associated with the PCI bus on my 600x, at least. Therefore, PCI bus
>things seem to accumulate on that IRQ, but that is an OK situation. I
>know that the pcmcia controller resides on the PCI bus, as does the
>sound subsystem. I srongly suspect that the USB device will also (once I
>get the USB backport merged in ;-). Therefore, if you are having a
>problem and suspect an IRQ collision on IRQ11, you are probably looking
>in the wrong place.
>
>Can you be more specific about the trouble you are having?
>

I managed to resolve my problem.  Classic case of not looking for the
most easiest answer. *whack*

It seems that some of the pcmcia components I'm using don't use the shared
irq option when requesting the irq, consequently, when I inserted my
usb ethernet adapter, nothing happened except for a bunch of useless error
messages and then I tried this again the other way around - with usb
device inserted and plugging in my pcmcia card later, and then I made
the observation that there was a bit of an irq contention in the logs -
my syslog messages told me that the irq was unavailable. I'll
probably need to verify things against the Linux PCMCIA Programmer's Guide and
the source...

Anyhows, it seems that IBM won't let you change the irq for your usb port 
but I can tweak my pcmcia config to avoid using irq 11. Mental note,
must read docs - Debian's installation scripts seems to have made
me lazy.

[It's really annoying how the 1492 only has one pcmcia slot. :( ]

However, removing this usb eth adapter seems to make my 1492 crash but
that's another issue...

Amy
-- 
Wordprocessors are for the lame... use TeX

              Amy Fong (afong@furryterror.org)
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