This is not a bug, these ports are used for different device features. Some of the "one port" devices actually exhibit multiple USB instances on the USB bus. Issues: - data loss - one single Receive URB is not nearly enough - nonstandard flow (Option devices) control - controlling the baud rate doesn't make sense This driver is named "option" because the most common device it's used for is a PC-Card (with an internal OHCI-USB interface, behind which the GSM interface sits), made by Option Inc.
Work sponsored by: Sigos GmbH, Germany This driver exists because the "normal" serial driver doesn't work too well with GSM modems.
SPDX-License-Identifier: GPL-2.0 /* USB Driver for GSM modems Copyright (C) 2005 Matthias Urlichs Portions copied from the Keyspan driver by Hugh Blemings History: see the git log.
0 kommentar(er)
