From 37194990aae3dfdbaae55fb9d2ab491683ade7e1 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Mon, 22 Nov 2010 19:35:25 +1100
Subject: [PATCH] Fix error in pol_sort.

pol_sort could go into an infinite loop.

The proof of this patch is left as a exercise for the reader :-)

Reported-by: "Hawrylewicz Czarnowski, Przemyslaw" <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---
 policy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/policy.c b/policy.c
index 945d37f..5f18034 100644
--- a/policy.c
+++ b/policy.c
@@ -137,8 +137,8 @@ static void pol_sort(struct dev_policy **pol)
 			if (p[next] == NULL ||
 			    (p[1-next] != NULL &&
 			     !(pol_lesseq(prev, p[1-next])
-			       ^pol_lesseq(p[1-next], p[next])
-			       ^pol_lesseq(p[next], prev)))
+			       ^pol_lesseq(prev, p[next])
+			       ^pol_lesseq(p[next], p[1-next])))
 				)
 				next = 1 - next;