From cea6d541dfd22835fae43787781506d89eabc3cf Mon Sep 17 00:00:00 2001
From: Richard Mudgett <rmudgett@digium.com>
Date: Tue, 14 Dec 2010 01:09:57 +0000
Subject: [PATCH] Return error if q931_notify() cannot send NOTIFY.

git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@2167 2fbb986a-6c06-0410-b554-c9c1f0a7f128
---
 q931.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/q931.c b/q931.c
index 8524655..20c0d90 100644
--- a/q931.c
+++ b/q931.c
@@ -4808,15 +4808,16 @@ int q931_notify(struct pri *ctrl, q931_call *c, int channel, int info)
 		break;
 	default:
 		if ((info > 0x2) || (info < 0x00)) {
-			return 0;
+			return -1;
 		}
 		break;
 	}
 
 	if (info >= 0) {
-		info = info & 0x7F;
+		info &= 0x7F;
 	} else {
-		info = -1;
+		/* Cannot send NOTIFY message if the mandatory ie is not going to be present. */
+		return -1;
 	}
 	return q931_notify_redirection(ctrl, c, info, NULL);
 }