> Is there any relation to windows side application (hyper terminal, proprietary > application) for this behavior i,e, for not called gs_close() upon Close() > system call? Basically no, a serial link isn't carrying remote system call interfaces, it carries a serial bytestream. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html