net/netdev_ieee802154_submac: prevent calling ACK TO fired if cancelled

(cherry picked from commit cb6e242b652f3c87444f45d0be044b10c31d6f17)
2021-10-07 14:37:05 +02:00 · 2021-10-07 14:37:05 +02:00 · 98211c291f
commit 98211c291f
parent 6b833f1791
1 changed files with 3 additions and 0 deletions
--- a/drivers/netdev_ieee802154_submac/netdev_ieee802154_submac.c
+++ b/drivers/netdev_ieee802154_submac/netdev_ieee802154_submac.c
@ -151,6 +151,9 @@ void ieee802154_submac_ack_timer_cancel(ieee802154_submac_t *submac)
                                                             submac);

    xtimer_remove(&netdev_submac->ack_timer);
+    /* Prevent a race condition between the RX_DONE event and the ACK timeout */
+    netdev_submac->isr_flags &= ~NETDEV_SUBMAC_FLAGS_ACK_TIMEOUT;
+
 }

 static int _send(netdev_t *netdev, const iolist_t *pkt)