PCAP_IRQ_ONOFF
free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys);
case PCAP_IRQ_ONOFF:
err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF),
free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys);