From: Ivan Grokhotkov <ivan@espressif.com>
Date: Mon, 8 Apr 2019 11:30:32 +0000 (+0800)
Subject: tcpip_adapter: unregister shutdown handlers, don’t fail on repeated registration
X-Git-Tag: v4.0-beta1~415^2~2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=198d7d47547c296ae4d9a8500410e461fd58ba2e;p=esp-idf

tcpip_adapter: unregister shutdown handlers, don’t fail on repeated registration
---

diff --git a/components/tcpip_adapter/event_handlers.c b/components/tcpip_adapter/event_handlers.c
index ff7847b286..99e4342a42 100644
--- a/components/tcpip_adapter/event_handlers.c
+++ b/components/tcpip_adapter/event_handlers.c
@@ -242,7 +242,7 @@ esp_err_t tcpip_adapter_set_default_wifi_handlers()
     }
 
     err = esp_register_shutdown_handler((shutdown_handler_t)esp_wifi_stop);
-    if (err != ESP_OK) {
+    if (err != ESP_OK && err != ESP_ERR_INVALID_STATE) {
         goto fail;
     }
 
@@ -263,8 +263,7 @@ esp_err_t tcpip_adapter_clear_default_wifi_handlers()
     esp_event_handler_unregister(WIFI_EVENT, WIFI_EVENT_AP_STOP, handle_ap_stop);
     esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, handle_sta_got_ip);
     esp_event_handler_unregister(IP_EVENT, IP_EVENT_ETH_GOT_IP, handle_eth_got_ip);
-
-    /* TODO: introduce esp_unregister_shutdown_handler or similar, call it here */
+    esp_unregister_shutdown_handler((shutdown_handler_t)esp_wifi_stop);
 
     return ESP_OK;
 }