} else {
mpu_port[dev] = pnp_port_start(pdev, 0);
if (mpu_irq[dev] >= 0 &&
- pnp_irq_valid(pdev, 0) && pnp_irq(pdev, 0) >= 0) {
+ pnp_irq_valid(pdev, 0) &&
+ pnp_irq(pdev, 0) != (resource_size_t)-1) {
mpu_irq[dev] = pnp_irq(pdev, 0);
} else {
mpu_irq[dev] = -1; /* disable interrupt */