From 376d85f96cd3221873c2bb1ef1f6a9bc7d0b0020 Mon Sep 17 00:00:00 2001
From: Joshua Colp <jcolp@digium.com>
Date: Wed, 21 Jan 2009 23:20:47 +0000
Subject: [PATCH] Read lock the contexts to maintain the locking order when we
 are notified that the state of a device has changed. (closes issue #13839)
 Reported by: mcallist

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@169867 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 main/pbx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/main/pbx.c b/main/pbx.c
index a1a8150460..1cc04f504f 100644
--- a/main/pbx.c
+++ b/main/pbx.c
@@ -2027,6 +2027,7 @@ void ast_hint_state_changed(const char *device)
 {
 	struct ast_hint *hint;
 
+	ast_rdlock_contexts();
 	AST_LIST_LOCK(&hints);
 
 	AST_LIST_TRAVERSE(&hints, hint, list) {
@@ -2064,6 +2065,7 @@ void ast_hint_state_changed(const char *device)
 	}
 
 	AST_LIST_UNLOCK(&hints);
+	ast_unlock_contexts();
 }
 
 /*! \brief  ast_extension_state_add: Add watcher for extension states */