ptp_devt 29 drivers/ptp/ptp_clock.c static dev_t ptp_devt; ptp_devt 199 drivers/ptp/ptp_clock.c int err = 0, index, major = MAJOR(ptp_devt); ptp_devt 376 drivers/ptp/ptp_clock.c unregister_chrdev_region(ptp_devt, MINORMASK + 1); ptp_devt 390 drivers/ptp/ptp_clock.c err = alloc_chrdev_region(&ptp_devt, 0, MINORMASK + 1, "ptp");