Merged revisions 139387 via svnmerge from

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

........
r139387 | jpeeler | 2008-08-21 18:39:31 -0500 (Thu, 21 Aug 2008) | 3 lines

Fixes loop that could possibly never exit in the event of a channel never being able to be opened or specify after a restart.
(closes issue #11017)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@139391 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_dahdi.c

@@ -8334,12 +8334,14 @@ static struct dahdi_pvt *mkintf(int channel, const struct dahdi_chan_conf *conf,
 		int chan_sig = conf->chan.sig;
 		if (!here) {
 			if ((channel != CHAN_PSEUDO) && !pri) {
+				int count = 0;
 				snprintf(fn, sizeof(fn), "%d", channel);
 				/* Open non-blocking */
 				tmp->subs[SUB_REAL].dfd = dahdi_open(fn);
-				while (tmp->subs[SUB_REAL].dfd < 0 && reloading == 2) { /* the kernel may not call dahdi_release fast enough for the open flagbit to be cleared in time */
+				while (tmp->subs[SUB_REAL].dfd < 0 && reloading == 2 && count < 1000) { /* the kernel may not call dahdi_release fast enough for the open flagbit to be cleared in time */
 					usleep(1);
 					tmp->subs[SUB_REAL].dfd = dahdi_open(fn);
+					count++;
 				}
 				/* Allocate a DAHDI structure */
 				if (tmp->subs[SUB_REAL].dfd < 0) {