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From
SubjectRe: UHCI/USB/PCI/interrupts
Date
> It turns out that as soon as I insert the module I get continuous
> interrupts calling drivers/usb/uhci.c:uhci_interrupt() on the
> PCI shared IRQ 11.

aha!

If I do the following which steers the interrupts for all pins
to the bogus irq 9 then I don't get all the interrupts.

# setpci -v -s5.0 60.b=9
# setpci -v -s5.0 61.b=9
# setpci -v -s5.0 62.b=9
Leaving:
# setpci -v -s5.0 63.b
00:05.0:63 = 0b
i.e. pin D (USB controller) steered to IRQ 11 then it works (well
not quite the mouse yet, but I get all the correct debug output).

When I switch them back one pin at a time after loading usbcore
and usb-uhci:
# setpci -v -s5.0 60.b=b
# setpci -v -s5.0 61.b=b
# setpci -v -s5.0 62.b=b
BOOM

So it seems I have continuous interrupts being generated
on pin C. Trouble is I don't anything on pin C according to
lspci.

Is this likely to be a hardware bug?

Paul
--
paul666
@mailandnews
com


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