static int ps3_sys_manager_handle_msg()

in ps3-sys-manager.c [526:577]

• 45 lines of code
• 9 McCabe index (conditional complexity)

static int ps3_sys_manager_handle_msg(struct ps3_system_bus_device *dev)
{
	int result;
	struct ps3_sys_manager_header header;

	result = ps3_vuart_read(dev, &header,
		sizeof(struct ps3_sys_manager_header));

	if (result)
		return result;

	if (header.version != 1) {
		dev_dbg(&dev->core, "%s:%d: unsupported header version (%u)\n",
			__func__, __LINE__, header.version);
		dump_sm_header(&header);
		goto fail_header;
	}

	BUILD_BUG_ON(sizeof(header) != 16);

	if (header.size != 16 || (header.payload_size != 8
		&& header.payload_size != 16)) {
		dump_sm_header(&header);
		BUG();
	}

	switch (header.service_id) {
	case PS3_SM_SERVICE_ID_EXTERN_EVENT:
		dev_dbg(&dev->core, "%s:%d: EVENT\n", __func__, __LINE__);
		return ps3_sys_manager_handle_event(dev);
	case PS3_SM_SERVICE_ID_COMMAND:
		dev_dbg(&dev->core, "%s:%d: COMMAND\n", __func__, __LINE__);
		return ps3_sys_manager_handle_cmd(dev);
	case PS3_SM_SERVICE_ID_REQUEST_ERROR:
		dev_dbg(&dev->core, "%s:%d: REQUEST_ERROR\n", __func__,
			__LINE__);
		dump_sm_header(&header);
		break;
	default:
		dev_dbg(&dev->core, "%s:%d: unknown service_id (%u)\n",
			__func__, __LINE__, header.service_id);
		break;
	}
	goto fail_id;

fail_header:
	ps3_vuart_clear_rx_bytes(dev, 0);
	return -EIO;
fail_id:
	ps3_vuart_clear_rx_bytes(dev, header.payload_size);
	return -EIO;
}