PC8736X_GPIO_CT
if (m >= PC8736X_GPIO_CT)
rc = register_chrdev_region(devid, PC8736X_GPIO_CT, DEVNAME);
rc = alloc_chrdev_region(&devid, 0, PC8736X_GPIO_CT, DEVNAME);
cdev_add(&pc8736x_gpio_cdev, devid, PC8736X_GPIO_CT);
unregister_chrdev_region(MKDEV(major,0), PC8736X_GPIO_CT);