HIL_IRQ
err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
free_irq(HIL_IRQ, hil_dev.dev_id);
if (HIL_IRQ)
free_irq(HIL_IRQ, hil_dev.dev_id);