From: Allan Stephens <allan.stephens@windriver.com>
Date: Wed, 21 May 2008 21:53:34 +0000 (-0700)
Subject: tipc: Optimize null pointer check during neighbor discovery
X-Git-Tag: v2.6.27-rc1~964^2~412
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=811102ca23dfdde5ee8b782b3a4bbff44c499cb2;p=platform%2Fkernel%2Flinux-stable.git

tipc: Optimize null pointer check during neighbor discovery

This patch optimizes TIPC neighbor discovery code to avoid testing for
a null node pointer when the pointer is already known to be non-null.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 5d643e5..faeaf06 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -200,9 +200,8 @@ void tipc_disc_recv_msg(struct sk_buff *buf)
 		dbg(" in own cluster\n");
 		if (n_ptr == NULL) {
 			n_ptr = tipc_node_create(orig);
-		}
-		if (n_ptr == NULL) {
-			return;
+			if (!n_ptr)
+				return;
 		}
 		spin_lock_bh(&n_ptr->lock);
 		link = n_ptr->links[b_ptr->identity];