prasad-alatkar commented on a change in pull request #777: nimble/host: Clear 
master and slave states on host reset
URL: https://github.com/apache/mynewt-nimble/pull/777#discussion_r397868096
 
 

 ##########
 File path: nimble/host/src/ble_gap.c
 ##########
 @@ -1237,6 +1237,53 @@ ble_gap_adv_active_instance(uint8_t instance)
     return ble_gap_slave[instance].op == BLE_GAP_OP_S_ADV;
 }
 
+/**
+ * Clears advertisement and discovery state.  This function is necessary
+ * when the controller loses its active state (e.g. on stack reset).
+ */
+void
+ble_gap_reset_state(int reason)
+{
+    uint16_t conn_handle;
+
+    while (1) {
+        conn_handle = ble_hs_atomic_first_conn_handle();
+        if (conn_handle == BLE_HS_CONN_HANDLE_NONE) {
+            break;
+        }
+
+        ble_gap_conn_broken(conn_handle, reason);
+    }
+
+#if NIMBLE_BLE_ADVERTISE
+#if MYNEWT_VAL(BLE_EXT_ADV)
+    uint8_t i;
+    for (i = 0; i < BLE_ADV_INSTANCES; i++) {
+        if (ble_gap_adv_active_instance(i)) {
+            ble_gap_slave_reset_state(i);
+            /* Indicate to application that advertising has stopped. */
+            ble_gap_adv_finished(i, reason, 0, 0);
+        }
+    }
+#else
+    if (ble_gap_adv_active_instance(0)) {
+        ble_gap_slave_reset_state(0);
+        /* Indicate to application that advertising has stopped. */
+        ble_gap_adv_finished(0, reason, 0, 0);
+    }
+#endif
+#endif
+
+#if NIMBLE_BLE_SCAN
+    ble_gap_master_reset_state();
 
 Review comment:
   sorry for that, done !!

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