linux-kernel - [PATCH 0/4] USB: serial: add support for multi-interface functions

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Message-Id: <20210330143820.9103-1-johan@kernel.org>
Date:   Tue, 30 Mar 2021 16:38:16 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Johan Hovold <johan@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] USB: serial: add support for multi-interface functions

A single USB function can be implemented using a group of interfaces and
this is for example commonly used for Communication Class devices.

This series adds support for multi-interface functions to USB serial
core and exports an interface that allows drivers to claim a second
sibling interface. The interface could easily be extended to allow
claiming further interfaces if ever needed.

The final patch uses the new interface to properly claim both the
control and data interface of Maxlinear/Exar devices.

Johan

Johan Hovold (4):
  USB: serial: drop unused suspending flag
  USB: serial: refactor endpoint classification
  USB: serial: add support for multi-interface functions
  USB: serial: xr: claim both interfaces

 drivers/usb/serial/usb-serial.c | 135 ++++++++++++++++++++++++--------
 drivers/usb/serial/xr_serial.c  |  26 +++++-
 include/linux/usb/serial.h      |   8 +-
 3 files changed, 131 insertions(+), 38 deletions(-)

-- 
2.26.3