From bfbea8a8869a0e21b97605841d04190d63665d19 Mon Sep 17 00:00:00 2001
From: Wong Hoi Sing Edison <hswong3i@gmail.com>
Date: Thu, 28 Sep 2006 14:40:21 -0700
Subject: [PATCH] [TCP] tcp-lp: prevent chance for oops

This patch fix the chance for tcp_lp_remote_hz_estimator return 0, if
0 < rhz < 64. It also make sure the flag LP_VALID_RHZ is set
correctly.

Signed-off-by: Wong Hoi Sing Edison <hswong3i@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/ipv4/tcp_lp.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/net/ipv4/tcp_lp.c b/net/ipv4/tcp_lp.c
index 308fb7e071c5..f0ebaf0e21cb 100644
--- a/net/ipv4/tcp_lp.c
+++ b/net/ipv4/tcp_lp.c
@@ -31,8 +31,6 @@
  *   Hung Hing Lun, Mike <hlhung3i@gmail.com>
  * SourceForge project page:
  *   http://tcp-lp-mod.sourceforge.net/
- *
- * Version: $Id: tcp_lp.c,v 1.24 2006/09/05 20:22:53 hswong3i Exp $
  */
 
 #include <linux/module.h>
@@ -164,7 +162,7 @@ static u32 tcp_lp_remote_hz_estimator(struct sock *sk)
 
  out:
 	/* record time for successful remote HZ calc */
-	if (rhz > 0)
+	if ((rhz >> 6) > 0)
 		lp->flag |= LP_VALID_RHZ;
 	else
 		lp->flag &= ~LP_VALID_RHZ;
-- 
2.20.1