tcp: Fix bitmask test in tcp_syn_options()

As reported by Alexey Dobriyan:

	  CHECK   net/ipv4/tcp_output.c
	net/ipv4/tcp_output.c:475:7: warning: dubious: !x & y

And sparse is damn right!

	if (unlikely(!OPTION_TS & opts->options))
		    ^^^
		size += TCPOLEN_SACKPERM_ALIGNED;

OPTION_TS is (1 << 1), so condition will never trigger.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 1fa683c0ba9b..a00532de2a8c 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -472,7 +472,7 @@ static unsigned tcp_syn_options(struct sock *sk, struct sk_buff *skb,
         }
         if (likely(sysctl_tcp_sack)) {
                 opts->options |= OPTION_SACK_ADVERTISE;
-                if (unlikely(!OPTION_TS & opts->options))
+                if (unlikely(!(OPTION_TS & opts->options)))
                         size += TCPOLEN_SACKPERM_ALIGNED;
         }