ARM: exynos: prepare for sparse IRQ

[firefly-linux-kernel-4.4.55.git] / net / ipv4 / tcp_output.c

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 817fbb396bc80077e23b03358355aca6ece6deba..5d0b4387cba6df401166a48f1e4cf3800d6ce6ff 100644 (file)
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1809,8 +1809,11 @@ static bool tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
                        goto send_now;
        }
 
-       /* Ok, it looks like it is advisable to defer.  */
-       tp->tso_deferred = 1 | (jiffies << 1);
+       /* Ok, it looks like it is advisable to defer.
+        * Do not rearm the timer if already set to not break TCP ACK clocking.
+        */
+       if (!tp->tso_deferred)
+               tp->tso_deferred = 1 | (jiffies << 1);
 
        return true;