int pps_kc_bind()

in kc.c [36:70]

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

int pps_kc_bind(struct pps_device *pps, struct pps_bind_args *bind_args)
{
	/* Check if another consumer is already bound */
	spin_lock_irq(&pps_kc_hardpps_lock);

	if (bind_args->edge == 0)
		if (pps_kc_hardpps_dev == pps) {
			pps_kc_hardpps_mode = 0;
			pps_kc_hardpps_dev = NULL;
			spin_unlock_irq(&pps_kc_hardpps_lock);
			dev_info(pps->dev, "unbound kernel"
					" consumer\n");
		} else {
			spin_unlock_irq(&pps_kc_hardpps_lock);
			dev_err(pps->dev, "selected kernel consumer"
					" is not bound\n");
			return -EINVAL;
		}
	else
		if (pps_kc_hardpps_dev == NULL ||
				pps_kc_hardpps_dev == pps) {
			pps_kc_hardpps_mode = bind_args->edge;
			pps_kc_hardpps_dev = pps;
			spin_unlock_irq(&pps_kc_hardpps_lock);
			dev_info(pps->dev, "bound kernel consumer: "
				"edge=0x%x\n", bind_args->edge);
		} else {
			spin_unlock_irq(&pps_kc_hardpps_lock);
			dev_err(pps->dev, "another kernel consumer"
					" is already bound\n");
			return -EINVAL;
		}

	return 0;
}