Al Niessner wrote:
1) Write some general handler that resets the IRQ and nothing else and
install it as the default handler instead of the current one that is
disabling the IRQ?
The only thing the kernel can do generically in this case is what it's
doing already - disabling the interrupt line. What needs to be done to a
device to clear the interrupt is device-dependent. If the interrupt
doesn't get cleared by the handler, it will just keep interrupting
continuously and using a ton of CPU time.
You could try disabling the USB controller and see if the APC card still
is producing spurious interrupts. If that's the case, though, fixing the
driver (so that it properly recognizes the interrupts) or the hardware
(so it doesn't generate spurious interrupts) is about the only option.
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from [email protected]
Home Page: http://www.roberthancock.com/
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