Merged revisions 114624 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r114624 | mmichelson | 2008-04-24 15:04:24 -0500 (Thu, 24 Apr 2008) | 10 lines

Resolve a deadlock in chan_local by releasing the channel lock
temporarily.

(closes issue #11712)
Reported by: callguy
Patches:
      11712.patch uploaded by putnopvut (license 60)
Tested by: acunningham


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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@114625 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_local.c

@@ -551,7 +551,13 @@ static int local_hangup(struct ast_channel *ast)
 			/* Deadlock avoidance */
 			while (p->owner && ast_channel_trylock(p->owner)) {
 				ast_mutex_unlock(&p->lock);
+				if (ast) {
+					ast_channel_unlock(ast);
+				}
 				usleep(1);
+				if (ast) {
+					ast_channel_lock(ast);
+				}
 				ast_mutex_lock(&p->lock);
 			}
 			if (p->owner) {