sfc: Don't clear timestamps in efx_ptp_rx()

A freshly allocated skb starts with timestamps clear.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index fe3c6d0..06c6420 100644 (file)
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -1323,14 +1323,8 @@ static bool efx_ptp_rx(struct efx_channel *channel, struct sk_buff *skb)
 
        /* Does this packet require timestamping? */
        if (ntohs(*(__be16 *)&skb->data[PTP_DPORT_OFFSET]) == PTP_EVENT_PORT) {
-               struct skb_shared_hwtstamps *timestamps;
-
                match->state = PTP_PACKET_STATE_UNMATCHED;
 
-               /* Clear all timestamps held: filled in later */
-               timestamps = skb_hwtstamps(skb);
-               memset(timestamps, 0, sizeof(*timestamps));
-
                /* We expect the sequence number to be in the same position in
                 * the packet for PTP V1 and V2
                 */