diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index aa4876edaac60b3d7d5d527f0b8d57a69b7fc01e..5b434597ac6359b80aed3730f911f9f36b9610f0 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -965,9 +965,8 @@ int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel)
 	ptp->evt_overflow = false;
 
 	ptp->phc_clock_info.owner = THIS_MODULE;
-	snprintf(ptp->phc_clock_info.name,
-		 sizeof(ptp->phc_clock_info.name),
-		 "%pm", efx->net_dev->perm_addr);
+	strlcpy(ptp->phc_clock_info.name, "sfc",
+		sizeof(ptp->phc_clock_info.name));
 	ptp->phc_clock_info.max_adj = MAX_PPB;
 	ptp->phc_clock_info.n_alarm = 0;
 	ptp->phc_clock_info.n_ext_ts = 0;