diff --git a/components/app_trace/app_trace.c b/components/app_trace/app_trace.c
index 939f3c4840..679686a39a 100644
--- a/components/app_trace/app_trace.c
+++ b/components/app_trace/app_trace.c
@@ -364,24 +364,10 @@ static inline esp_err_t esp_apptrace_lock_cleanup()
 esp_err_t esp_apptrace_lock(esp_apptrace_tmo_t *tmo)
 {
 #if CONFIG_ESP32_APPTRACE_LOCK_ENABLE
-    //unsigned cur, elapsed, start = xthal_get_ccount();
-
     esp_err_t ret = esp_apptrace_lock_take(&s_trace_buf.lock, tmo);
     if (ret != ESP_OK) {
         return ESP_FAIL;
     }
-    // decrease tmo by actual waiting time
-    // cur = xthal_get_ccount();
-    // if (start <= cur) {
-    //     elapsed = cur - start;
-    // } else {
-    //     elapsed = ULONG_MAX - start + cur;
-    // }
-    // if (ESP_APPTRACE_CPUTICKS2US(elapsed) > *tmo) {
-    //     *tmo = 0;
-    // } else {
-    //     *tmo -= ESP_APPTRACE_CPUTICKS2US(elapsed);
-    // }
 #endif
     return ESP_OK;
 }
diff --git a/docs/api-guides/app_trace.rst b/docs/api-guides/app_trace.rst
index c8e54a6142..0873decb2d 100644
--- a/docs/api-guides/app_trace.rst
+++ b/docs/api-guides/app_trace.rst
@@ -116,7 +116,7 @@ Also according to his needs user may want to receive data from the host. Piece o
         ...
     }
 
-``esp_apptrace_read()`` function uses memcpy to copy host data to user buffer. In some cases it can be more optimal to use ``esp_apptrace_down_buffer_get()`` and ``esp_apptrace_down_buffer_put()`` functions. 
+``esp_apptrace_read()`` function uses memcpy to copy host data to user buffer. In some cases it can be more optimal to use ``esp_apptrace_down_buffer_get()`` and ``esp_apptrace_down_buffer_put()`` functions.
 They allow developers to ocupy chunk of read buffer and process it in-place. The following piece of code shows how to do this.
 
 .. code-block:: c
@@ -135,12 +135,12 @@ They allow developers to ocupy chunk of read buffer and process it in-place. The
         return ESP_FAIL;
     }
     if (sz > 4) {
-      number = (uint32_t *)ptr;
-      printf("Here is the number %d", *number);
+        number = (uint32_t *)ptr;
+        printf("Here is the number %d", *number);
     } else {
-      printf("No data");
+        printf("No data");
     }
-    esp_err_t res = esp_apptrace_buffer_put(ESP_APPTRACE_DEST_TRAX, ptr, 100/*tmo in us*/);
+    esp_err_t res = esp_apptrace_down_buffer_put(ESP_APPTRACE_DEST_TRAX, ptr, 100/*tmo in us*/);
     if (res != ESP_OK) {
         /* in case of error host tracing tool (e.g. OpenOCD) will report incomplete user buffer */
         ESP_LOGE("Failed to put buffer!");