subscr: Dump the pending requests to help with debugging state.
diff --git a/openbsc/src/gsm_subscriber.c b/openbsc/src/gsm_subscriber.c
index 9b8adeb..2f6cc3c 100644
--- a/openbsc/src/gsm_subscriber.c
+++ b/openbsc/src/gsm_subscriber.c
@@ -28,6 +28,8 @@
 
 #include <osmocore/talloc.h>
 
+#include <osmocom/vty/vty.h>
+
 #include <openbsc/gsm_subscriber.h>
 #include <openbsc/gsm_04_08.h>
 #include <openbsc/debug.h>
@@ -387,3 +389,16 @@
 
 	return deleted;
 }
+
+int subscr_pending_dump(struct gsm_subscriber *sub, struct vty *vty)
+{
+	struct subscr_request *req;
+
+	vty_out(vty, "Pending Requests for Subscriber %llu.%s", sub->id, VTY_NEWLINE);
+	llist_for_each_entry(req, &sub->requests, entry) {
+		vty_out(vty, "Channel type: %d State: %d Sub: %llu.%s",
+			req->channel_type, req->state, req->subscr->id, VTY_NEWLINE);
+	}
+
+	return 0;
+}