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Re: Shared Interrupt handling.

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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