From 2ad908f71ee8da1e9211e691e989c3adae8347ae Mon Sep 17 00:00:00 2001
From: baohongde <baohongde@espressif.com>
Date: Fri, 5 Mar 2021 21:54:20 +0800
Subject: [PATCH] components/bt: Shutdown Bluetooth before esp_restart.

---
 components/bt/bt.c            | 22 ++++++++++++++++++++++
 components/esp32/system_api.c |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/components/bt/bt.c b/components/bt/bt.c
index b7b589373b..8d64e06841 100644
--- a/components/bt/bt.c
+++ b/components/bt/bt.c
@@ -1507,6 +1507,24 @@ 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;
@@ -1566,6 +1584,10 @@ 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;
 }
diff --git a/components/esp32/system_api.c b/components/esp32/system_api.c
index 7616b4b00c..4de32887e2 100644
--- a/components/esp32/system_api.c
+++ b/components/esp32/system_api.c
@@ -44,7 +44,7 @@ static const char* TAG = "system_api";
 
 static uint8_t base_mac_addr[6] = { 0 };
 
-#define SHUTDOWN_HANDLERS_NO 2
+#define SHUTDOWN_HANDLERS_NO 3
 static shutdown_handler_t shutdown_handlers[SHUTDOWN_HANDLERS_NO];
 
 void system_init()