static int __init power_init()

in power.c [197:237]

• 31 lines of code
• 6 McCabe index (conditional complexity)

static int __init power_init(void)
{
	unsigned long ret;
	unsigned long soft_power_reg;

#if 0
	request_irq( IRQ_FROM_REGION(CPU_IRQ_REGION)+2, &powerfail_interrupt,
		0, "powerfail", NULL);
#endif

	/* enable the soft power switch if possible */
	ret = pdc_soft_power_info(&soft_power_reg);
	if (ret == PDC_OK)
		ret = pdc_soft_power_button(1);
	if (ret != PDC_OK)
		soft_power_reg = -1UL;
	
	switch (soft_power_reg) {
	case 0:		printk(KERN_INFO DRIVER_NAME ": Gecko-style soft power switch enabled.\n");
			break;
			
	case -1UL:	printk(KERN_INFO DRIVER_NAME ": Soft power switch support not available.\n");
			return -ENODEV;
	
	default:	printk(KERN_INFO DRIVER_NAME ": Soft power switch at 0x%08lx enabled.\n",
				soft_power_reg);
	}

	power_task = kthread_run(kpowerswd, (void*)soft_power_reg, KTHREAD_NAME);
	if (IS_ERR(power_task)) {
		printk(KERN_ERR DRIVER_NAME ": thread creation failed.  Driver not loaded.\n");
		pdc_soft_power_button(0);
		return -EIO;
	}

	/* Register a call for panic conditions. */
	atomic_notifier_chain_register(&panic_notifier_list,
			&parisc_panic_block);

	return 0;
}