HFI1_NMINORS
ret = alloc_chrdev_region(&hfi1_dev, 0, HFI1_NMINORS, DRIVER_NAME);
unregister_chrdev_region(hfi1_dev, HFI1_NMINORS);
unregister_chrdev_region(hfi1_dev, HFI1_NMINORS);
unregister_chrdev_region(hfi1_dev, HFI1_NMINORS);