fix(nimble): De-register host cb in stack deinit

nimble/transport/esp_ipc/src/hci_esp_ipc.c

@@ -14,6 +14,13 @@
 #include "esp_hci_transport.h"
 #include "esp_hci_internal.h"
 
+static int
+ble_transport_dummy_host_recv_cb(hci_trans_pkt_ind_t type, uint8_t *data, uint16_t len)
+{
+    /* Dummy function */
+    return 0;
+}
+
 static int
 ble_transport_host_recv_cb(hci_trans_pkt_ind_t type, uint8_t *data, uint16_t len)
 {
@@ -45,6 +52,12 @@ ble_transport_ll_init(void)
     hci_transport_host_callback_register(ble_transport_host_recv_cb);
 }
 
+void
+ble_transport_ll_deinit(void)
+{
+    hci_transport_host_callback_register(ble_transport_dummy_host_recv_cb);
+}
+
 void *
 ble_transport_alloc_cmd(void)
 {

nimble/transport/esp_ipc_legacy/src/hci_esp_ipc_legacy.c

@@ -31,3 +31,9 @@ ble_transport_ll_init(void)
 
 }
 
+void
+ble_transport_ll_deinit(void)
+{
+
+}
+

nimble/transport/include/nimble/transport_impl.h

@@ -31,6 +31,8 @@ extern "C" {
 extern void ble_transport_ll_init(void);
 extern void ble_transport_hs_init(void);
 
+extern void ble_transport_ll_deinit(void);
+
 /* APIs to be implemented by HS/LL side of transports */
 extern int ble_transport_to_ll_cmd_impl(void *buf);
 extern int ble_transport_to_ll_acl_impl(struct os_mbuf *om);

porting/nimble/src/nimble_port.c

@@ -156,6 +156,8 @@ esp_err_t esp_nimble_deinit(void)
 #if !SOC_ESP_NIMBLE_CONTROLLER || !CONFIG_BT_CONTROLLER_ENABLED
     npl_freertos_funcs_deinit();
 #endif
+
+    ble_transport_ll_deinit();
     return ESP_OK;
 }