From 91bfc89301112365b20f524c5c7ddfe960d2c4d3 Mon Sep 17 00:00:00 2001
From: Matthew Fredrickson <creslin@digium.com>
Date: Mon, 23 May 2005 17:07:32 +0000
Subject: [PATCH] Bug in pri_find_principle

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5755 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_zap.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index f90b48a090..de9f0f4c11 100755
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -7337,7 +7337,9 @@ static int pri_find_principle(struct zt_pri *pri, int channel)
 	
 	if (!PRI_EXPLICIT(channel)) {
 		spanfd = pri_active_dchan_fd(pri);
-		span = ioctl(spanfd, ZT_GET_PARAMS, &param);
+		if (ioctl(spanfd, ZT_GET_PARAMS, &param))
+			return -1;
+		span = param.spanno - 1;
 	}
 
 	for (x=0;x<pri->numchans;x++) {