ipc4: ipcgtw: code cleanup

The use of intermediate endpoint buffer was removed from gateways
some time ago. However, the IPC gateway code still contained logic
that unnecessarily creates such endpoint buffer. That code has now
been removed.

Signed-off-by: Serhiy Katsyuba <[email protected]>

src/audio/copier/copier_ipcgtw.c

@@ -223,21 +223,13 @@ int copier_ipcgtw_create(struct comp_dev *dev, struct copier_data *cd,
 
 	cd->ipc_gtw = true;
 
-	/* create_endpoint_buffer() uses this value to choose between input and
-	 * output formats in copier config to setup buffer. For this purpose
-	 * IPC gateway should be handled similarly as host gateway.
-	 */
+	/* The IPC gateway is treated as a host gateway */
 	config->type = SOF_COMP_HOST;
 	cd->gtw_type = ipc4_gtw_host;
 
-	ret = create_endpoint_buffer(dev, cd, copier, false);
-	if (ret < 0)
-		return ret;
-
 	ipcgtw_data = rzalloc(SOF_MEM_ZONE_RUNTIME, 0, SOF_MEM_CAPS_RAM, sizeof(*ipcgtw_data));
 	if (!ipcgtw_data) {
-		ret = -ENOMEM;
-		goto e_buf;
+		return -ENOMEM;
 	}
 
 	ipcgtw_data->node_id = gtw_cfg->node_id;
@@ -246,8 +238,8 @@ int copier_ipcgtw_create(struct comp_dev *dev, struct copier_data *cd,
 	blob = (const struct ipc4_ipc_gateway_config_blob *)
 		((const struct ipc4_gateway_config_data *)gtw_cfg->config_data)->config_blob;
 
-	/* Endpoint buffer is created in copier with size specified in copier config. That buffer
-	 * will be resized to size specified in IPC gateway blob later in ipcgtw_params().
+	/* The buffer connected to the IPC gateway will be resized later in ipcgtw_params()
+	 * to the size specified in the IPC gateway blob.
 	 */
 	comp_dbg(dev, "ipcgtw_create(): buffer_size: %u", blob->buffer_size);
 	ipcgtw_data->buf_size = blob->buffer_size;
@@ -264,15 +256,9 @@ int copier_ipcgtw_create(struct comp_dev *dev, struct copier_data *cd,
 	}
 
 	if (cd->direction == SOF_IPC_STREAM_PLAYBACK) {
-		comp_buffer_connect(dev, config->core,
-				    cd->endpoint_buffer[cd->endpoint_num],
-				    PPL_CONN_DIR_COMP_TO_BUFFER);
 		cd->bsource_buffer = false;
 		pipeline->source_comp = dev;
 	} else {
-		comp_buffer_connect(dev, config->core,
-				    cd->endpoint_buffer[cd->endpoint_num],
-				    PPL_CONN_DIR_BUFFER_TO_COMP);
 		cd->bsource_buffer = true;
 		pipeline->sink_comp = dev;
 	}
@@ -285,14 +271,11 @@ int copier_ipcgtw_create(struct comp_dev *dev, struct copier_data *cd,
 
 e_ipcgtw:
 	rfree(ipcgtw_data);
-e_buf:
-	buffer_free(cd->endpoint_buffer[cd->endpoint_num]);
 	return ret;
 }
 
 void copier_ipcgtw_free(struct copier_data *cd)
 {
 	list_item_del(&cd->ipcgtw_data->item);
 	rfree(cd->ipcgtw_data);
-	buffer_free(cd->endpoint_buffer[0]);
 }