fix cdc_vcom.c notify receive data.
@@ -304,7 +304,8 @@ static rt_err_t _ep_out_handler(ufunction_t func, rt_size_t size)
data = (struct vcom*)func->user_data;
/* ensure serial is active */
- if(data->serial.parent.open_flag & RT_DEVICE_FLAG_ACTIVATED)
+ if((data->serial.parent.flag & RT_DEVICE_FLAG_ACTIVATED)
+ && (data->serial.parent.open_flag & RT_DEVICE_OFLAG_OPEN))
{
/* receive data from USB VCOM */
level = rt_hw_interrupt_disable();
