Merge branch 'bufix/fix_assert_while_stack_deinit_v5.1' into 'release…

…/v5.1'

NimBLE :  Fix assert due to controller event while stack deinit (v5.1)

See merge request espressif/esp-idf!24620

components/bt/host/nimble/esp-hci/src/esp_nimble_hci.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -46,6 +46,7 @@ const static char *TAG = "NimBLE";
 
 int os_msys_buf_alloc(void);
 void os_msys_buf_free(void);
+extern uint8_t ble_hs_enabled_state;
 
 void ble_hci_trans_cfg_hs(ble_hci_trans_rx_cmd_fn *cmd_cb,
                           void *cmd_arg,
@@ -184,6 +185,12 @@ static void controller_rcv_pkt_ready(void)
  */
 static int host_rcv_pkt(uint8_t *data, uint16_t len)
 {
+    if(!ble_hs_enabled_state) {
+        /* If host is not enabled, drop the packet */
+        ESP_LOGE(TAG, "Host not enabled. Dropping the packet!");
+        return 0;
+    }
+
     if (data[0] == BLE_HCI_UART_H4_EVT) {
         uint8_t *evbuf;
         int totlen;