Index: channels/chan_dahdi.c
===================================================================
--- channels/chan_dahdi.c	(revision 401410)
+++ channels/chan_dahdi.c	(working copy)
@@ -1221,7 +1221,9 @@
 		if (res < 0) {
 			if (errno != ELAST) {
 				ast_log(LOG_WARNING, "read returned error: %s\n", strerror(errno));
-				callerid_free(p->cs);
+				return -1;
+			} else {
+				ast_log(LOG_WARNING, "read returned error: ELAST\n");
 				return -1;
 			}
 		}