1 files changed, 3 insertions, 3 deletions

diff --git a/net/ipv4/tcp_lp.c b/net/ipv4/tcp_lp.c
index 80e140e3ec2d..e7f5ef92cbd8 100644
--- a/net/ipv4/tcp_lp.c
+++ b/net/ipv4/tcp_lp.c
@@ -260,13 +260,13 @@ static void tcp_lp_rtt_sample(struct sock *sk, u32 rtt)
  * newReno in increase case.
  * We work it out by following the idea from TCP-LP's paper directly
  */
-static void tcp_lp_pkts_acked(struct sock *sk, u32 num_acked, ktime_t last)
+static void tcp_lp_pkts_acked(struct sock *sk, u32 num_acked, s32 rtt_us)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct lp *lp = inet_csk_ca(sk);
 
-        if (!ktime_equal(last, net_invalid_timestamp()))
-                tcp_lp_rtt_sample(sk,  ktime_to_us(net_timedelta(last)));
+        if (rtt_us > 0)
+                tcp_lp_rtt_sample(sk, rtt_us);
 
         /* calc inference */
         if (tcp_time_stamp > tp->rx_opt.rcv_tsecr)