fsm: Re-set fsm_inst->T to 0 after timer expiration

If the user starts the FSM timer with a given timer number during
fsm_inst_state_chg() with a timeout, we should remove that "T" number
after timer expiration.  Otherwise it might be confusing if e.g. the VTY
interface shows FSM instances with a certain timer number assigned, but
that timer is not actually running anymore.

Change-Id: I71167ec1000dc4c6954d851d3b92f6bf12984925

1 files changed, 4 insertions, 1 deletions

diff --git a/src/fsm.c b/src/fsm.c
index 7b2be701..9e6ef156 100644
--- a/src/fsm.c
+++ b/src/fsm.c
@@ -178,13 +178,16 @@ static void fsm_tmr_cb(void *data)
 
 	if (fsm->timer_cb) {
 		int rc = fsm->timer_cb(fi);
-		if (rc != 1)
+		if (rc != 1) {
+			fi->T = 0;
 			return;
+		}
 		LOGPFSM(fi, "timer_cb requested termination\n");
 	} else
 		LOGPFSM(fi, "No timer_cb, automatic termination\n");
 
 	/* if timer_cb returns 1 or there is no timer_cb */
+	fi->T = 0;
 	osmo_fsm_inst_term(fi, OSMO_FSM_TERM_TIMEOUT, &T);
 }