btc_a2dp_control_set_datachnl_stat is only used by a2dp sink

components/bt/host/bluedroid/btc/profile/std/a2dp/btc_a2dp_control.c

@@ -33,7 +33,7 @@
 #if BTC_AV_INCLUDED
 
 typedef struct {
-    BOOLEAN data_channel_open;
+    BOOLEAN data_channel_open; /* used only by A2DP sink */
     UINT8 a2dp_cmd_pending; /* we can have max one command pending */
 } tBTC_AA_CTRL_CB;
 
@@ -83,7 +83,9 @@ static void btc_a2dp_datapath_open(void)
         btc_a2dp_source_encoder_update();
     }
 #endif
+#if (BTC_AV_SINK_INCLUDED == TRUE)
     btc_aa_ctrl_cb.data_channel_open = TRUE;
+#endif
 }
 
 BOOLEAN btc_a2dp_control_get_datachnl_stat(void)

components/bt/host/bluedroid/btc/profile/std/a2dp/btc_a2dp_source.c

@@ -1579,7 +1579,6 @@ static void btc_a2dp_source_thread_init(UNUSED_ATTR void *context)
 
 static void btc_a2dp_source_thread_cleanup(UNUSED_ATTR void *context)
 {
-    btc_a2dp_control_set_datachnl_stat(FALSE);
     /* Clear media task flag */
     btc_a2dp_source_state = BTC_A2DP_SOURCE_STATE_OFF;