thing.c

void pic8259_irq_begin(uint8_t irq)
{
    int result;

    // check for spurious activations
    if (irq_is_spurious(irq))
    {
        kprintf("spurious activation of irq%hhu\n", irq);
        return;
    }

    else if (irq_handlers[irq])
    {
        result = irq_handlers[irq](irq);

        if (result)
        {
            kprintf("error handling irq%hhu: % d\n", irq, result);
        }
    }
    else
    {
        kprintf("%s of irq%hhu\n", "unhandled activation", irq);
    }

    pic8259_irq_end(irq);
}