static int __init lasi_init_chip()

in lasi.c [162:224]

• 40 lines of code
• 5 McCabe index (conditional complexity)

static int __init lasi_init_chip(struct parisc_device *dev)
{
	extern void (*chassis_power_off)(void);
	struct gsc_asic *lasi;
	struct gsc_irq gsc_irq;
	int ret;

	lasi = kzalloc(sizeof(*lasi), GFP_KERNEL);
	if (!lasi)
		return -ENOMEM;

	lasi->name = "Lasi";
	lasi->hpa = dev->hpa.start;

	/* Check the 4-bit (yes, only 4) version register */
	lasi->version = gsc_readl(lasi->hpa + LASI_VER) & 0xf;
	printk(KERN_INFO "%s version %d at 0x%lx found.\n",
		lasi->name, lasi->version, lasi->hpa);

	/* initialize the chassis LEDs really early */ 
	lasi_led_init(lasi->hpa);

	/* Stop LASI barking for a bit */
	lasi_init_irq(lasi);

	/* the IRQ lasi should use */
	dev->irq = gsc_alloc_irq(&gsc_irq);
	if (dev->irq < 0) {
		printk(KERN_ERR "%s(): cannot get GSC irq\n",
				__func__);
		kfree(lasi);
		return -EBUSY;
	}

	lasi->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;

	ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "lasi", lasi);
	if (ret < 0) {
		kfree(lasi);
		return ret;
	}

	/* enable IRQ's for devices below LASI */
	gsc_writel(lasi->eim, lasi->hpa + OFFSET_IAR);

	/* Done init'ing, register this driver */
	ret = gsc_common_setup(dev, lasi);
	if (ret) {
		kfree(lasi);
		return ret;
	}    

	gsc_fixup_irqs(dev, lasi, lasi_choose_irq);

	/* initialize the power off function */
	/* FIXME: Record the LASI HPA for the power off function.  This should
	 * ensure that only the first LASI (the one controlling the power off)
	 * should set the HPA here */
	lasi_power_off_hpa = lasi->hpa;
	chassis_power_off = lasi_power_off;
	
	return ret;
}