Hi Greg,
> Can someone explain how the kernel figures out which interrupt handler
> to call when the interrupt line is shared.
It calles them all, until one says it handled the interrupt.
Doesn't the following code in handle_IRQ_event() suggest that ALL the
interrupt handlers are called, IRRESPECTIVE of the return value?
do {
ret = action->handler(irq, action->dev_id);
if (ret == IRQ_HANDLED)
status |= action->flags;
retval |= ret;
action = action->next;
} while (action);
Thanks,
Rajat
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