sja1000_interrupt
if (sja1000_interrupt(irq, dev) == IRQ_HANDLED)
sja1000_interrupt(irq, netdev) == IRQ_HANDLED)
EXPORT_SYMBOL_GPL(sja1000_interrupt);
err = request_threaded_irq(dev->irq, sja1000_interrupt,
irqreturn_t sja1000_interrupt(int irq, void *dev_id);