hv_ptp_clock      521 drivers/hv/hv_util.c static struct ptp_clock *hv_ptp_clock;
hv_ptp_clock      538 drivers/hv/hv_util.c 	hv_ptp_clock = ptp_clock_register(&ptp_hyperv_info, NULL);
hv_ptp_clock      539 drivers/hv/hv_util.c 	if (IS_ERR_OR_NULL(hv_ptp_clock)) {
hv_ptp_clock      541 drivers/hv/hv_util.c 		       PTR_ERR(hv_ptp_clock));
hv_ptp_clock      542 drivers/hv/hv_util.c 		hv_ptp_clock = NULL;
hv_ptp_clock      550 drivers/hv/hv_util.c 	if (hv_ptp_clock)
hv_ptp_clock      551 drivers/hv/hv_util.c 		ptp_clock_unregister(hv_ptp_clock);