GPIO Driver

    for (i = 0; i < NUMBER_OF_GPIOS; i++)
    {
        error_code
          = request_irq(gpio_to_irq(gpio_list[i].gpio), irq_handlers[i],
                        IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, gpio_list[i].label, NULL);
        if (error_code)
        {
            pr_err("Could not get the requested IRQ for %s\n", DEVICE_NAME);
            gpio_free_array(gpio_list, i);

            // Need to free the irqs already asked for
            for (y = i; y > 0; y--)
                free_irq(gpio_list[y].gpio, NULL);
            device_destroy(cl, devt);
            unregister_chrdev_region(devt, NB_PERIPHERALS);
            class_destroy(cl);
            return error_code;
        }
    }