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Date:   Sun, 27 Sep 2020 02:57:50 +0900
From:   Vincent Mailhol <>
To:,,, Wolfgang Grandegger <>,
        Marc Kleine-Budde <>,
        "David S . Miller" <>
Cc:     Vincent Mailhol <>
Subject: [PATCH 0/6] can: add support for ETAS ES58X CAN USB

Resending: In my previous e-mail, I forgot to include the in the cover letter which broke the chain
reply... Sorry for the spam.

The purpose of this patch series is to introduce a new CAN USB
driver to support ETAS USB interfaces (ES58X series).

During development, issues in drivers/net/can/dev.c where discovered,
the fix for those issues are included in this patch series.

We also propose to add two helper functions in include/linux/can/dev.h
which we think can benefit other drivers: get_can_len() and

The driver indirectly relies on
([PATCH] can: raw: add missing error queue support) for the call to
skb_tx_timestamp() to work but can still compile without it.

*Side notes*: scripts/ returns 4 'checks' findings in
[PATCH 5/6]. All those findings are of type: "Macro argument reuse 'x'
possible side-effects?".  Those arguments reuse are actually made by
calling either __stringify() or sizeof_field() which are both
pre-processor constant. Furthermore, those macro are never called with
arguments sensible to side-effects. So no actual side effect would

Thank you for your comments.

Vincent Mailhol (6):
  can: dev: can_get_echo_skb(): prevent call to kfree_skb() in hard IRQ
  can: dev: add a helper function to get the correct length of Classical
  can: dev: __can_get_echo_skb(): fix the return length
  can: dev: add a helper function to calculate the duration of one bit
  can: usb: etas_es58X: add support for ETAS ES58X CAN USB interfaces
  USB: cdc-acm: blacklist ETAS ES58X device

 drivers/net/can/dev.c                       |   26 +-
 drivers/net/can/usb/Kconfig                 |    9 +
 drivers/net/can/usb/Makefile                |    1 +
 drivers/net/can/usb/etas_es58x/Makefile     |    4 +
 drivers/net/can/usb/etas_es58x/es581_4.c    |  560 ++++
 drivers/net/can/usb/etas_es58x/es581_4.h    |  237 ++
 drivers/net/can/usb/etas_es58x/es58x_core.c | 2725 +++++++++++++++++++
 drivers/net/can/usb/etas_es58x/es58x_core.h |  700 +++++
 drivers/net/can/usb/etas_es58x/es58x_fd.c   |  650 +++++
 drivers/net/can/usb/etas_es58x/es58x_fd.h   |  243 ++
 drivers/usb/class/cdc-acm.c                 |   11 +
 include/linux/can/dev.h                     |   38 +
 12 files changed, 5190 insertions(+), 14 deletions(-)
 create mode 100644 drivers/net/can/usb/etas_es58x/Makefile
 create mode 100644 drivers/net/can/usb/etas_es58x/es581_4.c
 create mode 100644 drivers/net/can/usb/etas_es58x/es581_4.h
 create mode 100644 drivers/net/can/usb/etas_es58x/es58x_core.c
 create mode 100644 drivers/net/can/usb/etas_es58x/es58x_core.h
 create mode 100644 drivers/net/can/usb/etas_es58x/es58x_fd.c
 create mode 100644 drivers/net/can/usb/etas_es58x/es58x_fd.h


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