From fdfc95812c50cfc30794c6718512b1e6c37ab516 Mon Sep 17 00:00:00 2001
From: baohongde <baohongde@espressif.com>
Date: Fri, 25 Dec 2020 14:10:27 +0800
Subject: [PATCH] components/bt: Shutdown Bluetooth before esp_restart.

---
 components/bt/controller/bt.c          | 22 ++++++++++++++++++++++
 components/esp_common/src/system_api.c |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/components/bt/controller/bt.c b/components/bt/controller/bt.c
index c50629091f..d9386a1d36 100644
--- a/components/bt/controller/bt.c
+++ b/components/bt/controller/bt.c
@@ -1535,6 +1535,23 @@ esp_err_t esp_bt_controller_deinit(void)
     return ESP_OK;
 }
 
+static void bt_shutdown(void)
+{
+    esp_err_t ret = ESP_OK;
+    ESP_LOGD(BTDM_LOG_TAG, "stop/deinit bt");
+
+    ret = esp_bt_controller_disable();
+    if (ESP_OK != ret) {
+        ESP_LOGW(BTDM_LOG_TAG, "controller disable ret=%d", ret);
+    }
+    ret = esp_bt_controller_deinit();
+    if (ESP_OK != ret) {
+        ESP_LOGW(BTDM_LOG_TAG, "controller deinit ret=%d", ret);
+    }
+    return;
+}
+
+
 esp_err_t esp_bt_controller_enable(esp_bt_mode_t mode)
 {
     int ret;
@@ -1598,6 +1615,10 @@ esp_err_t esp_bt_controller_enable(esp_bt_mode_t mode)
     }
 
     btdm_controller_status = ESP_BT_CONTROLLER_STATUS_ENABLED;
+    ret = esp_register_shutdown_handler(bt_shutdown);
+    if (ret != ESP_OK) {
+        ESP_LOGW(BTDM_LOG_TAG, "Register shutdown handler failed, ret = 0x%x", ret);
+    }
 
     return ESP_OK;
 }
@@ -1628,6 +1649,7 @@ esp_err_t esp_bt_controller_disable(void)
     }
     esp_phy_rf_deinit(PHY_BT_MODULE);
     btdm_controller_status = ESP_BT_CONTROLLER_STATUS_INITED;
+    esp_unregister_shutdown_handler(bt_shutdown);
 
 #ifdef CONFIG_PM_ENABLE
     if (!s_btdm_allow_light_sleep) {
diff --git a/components/esp_common/src/system_api.c b/components/esp_common/src/system_api.c
index b43d413eb8..25814235c7 100644
--- a/components/esp_common/src/system_api.c
+++ b/components/esp_common/src/system_api.c
@@ -5,7 +5,7 @@
 #include "freertos/task.h"
 
 
-#define SHUTDOWN_HANDLERS_NO 2
+#define SHUTDOWN_HANDLERS_NO 3
 static shutdown_handler_t shutdown_handlers[SHUTDOWN_HANDLERS_NO];
 
 esp_err_t esp_register_shutdown_handler(shutdown_handler_t handler)