clean up tud_audio_set_itf_cb() invocation

Author: hathach

src/class/audio/audio_device.c

@@ -1629,8 +1629,6 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *
 #endif
 
 #endif
-            // Invoke callback - can be used to trigger data sampling if not already running
-            //            if (tud_audio_set_itf_cb) TU_VERIFY(tud_audio_set_itf_cb(rhport, p_request));
 
             // Schedule first transmit if alternate interface is not zero i.e. streaming is disabled - in case no sample data is available a ZLP is loaded
             // It is necessary to trigger this here since the refill is done with an RX FIFO empty interrupt which can only trigger if something was in there
@@ -1662,16 +1660,6 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *
 #endif
 #endif
 
-#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
-            // In case of asynchronous EP, call Cb after ep_fb is set
-            //            if ( !(desc_ep->bmAttributes.sync == 0x01 && audio->ep_fb == 0) )
-            //            {
-            //              if (tud_audio_set_itf_cb) TU_VERIFY(tud_audio_set_itf_cb(rhport, p_request));
-            //            }
-#else
-            // Invoke callback
-            if (tud_audio_set_itf_cb) TU_VERIFY(tud_audio_set_itf_cb(rhport, p_request));
-#endif
             // Prepare for incoming data
 #if USE_LINEAR_BUFFER_RX
             TU_VERIFY(usbd_edpt_xfer(rhport, audio->ep_out, audio->lin_buf_out, audio->ep_out_sz), false);
@@ -1688,12 +1676,6 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *
 
             // Enable SOF interrupt if callback is implemented
             if (tud_audio_feedback_interval_isr) usbd_sof_enable(rhport, true);
-
-            //            // Invoke callback after ep_out is set
-            //            if (audio->ep_out != 0)
-            //            {
-            //              if (tud_audio_set_itf_cb) TU_VERIFY(tud_audio_set_itf_cb(rhport, p_request));
-            //            }
           }
 #endif
 #endif // CFG_TUD_AUDIO_ENABLE_EP_OUT
@@ -1705,10 +1687,10 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const *
 
       TU_VERIFY(foundEPs == nEps);
 
-#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
       // Invoke one callback for a final set interface
       if (tud_audio_set_itf_cb) TU_VERIFY(tud_audio_set_itf_cb(rhport, p_request));
 
+#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
       // Prepare feedback computation if callback is available
       if (tud_audio_feedback_params_cb)
       {