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From:   =?iso-8859-1?Q?St=E9phane_Grosjean?= <s.grosjean@peak-system.com>
To:     Oliver Hartkopp <socketcan@hartkopp.net>,
        Paul Thomas <pthomas8589@gmail.com>,
        "linux-can@vger.kernel.org" <linux-can@vger.kernel.org>
CC:     Wolfgang Grandegger <wg@grandegger.com>,
        Marc Kleine-Budde <mkl@pengutronix.de>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        PEAK-System support <support@peak-system.com>
Subject: RE: peak_usb: urb aborted
Thread-Topic: peak_usb: urb aborted
Thread-Index: AQHYS2jrY5s4vBY7Lk+LYv4om2VVRazmWrAAgARYVFU=
Date:   Mon, 11 Apr 2022 13:07:24 +0000
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References: <CAD56B7dMg073f56vfaxp38=dZiAFU0iCn6kmDGiNcNtCijyFoA@mail.gmail.com>
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Hi,

Thank you Oliver for taking care of this request.

These errors can also be caused by a lack of power being supplied to the de=
vice itself. Being connected to a USB hub with insufficient power can also =
be an explanation for these sporadic errors.

Regards,

-- Stephane


De : Oliver Hartkopp <socketcan@hartkopp.net>
Envoy=E9 : vendredi 8 avril 2022 20:45
=C0 : Paul Thomas <pthomas8589@gmail.com>; linux-can@vger.kernel.org <linux=
-can@vger.kernel.org>; St=E9phane Grosjean <s.grosjean@peak-system.com>
Cc : Wolfgang Grandegger <wg@grandegger.com>; Marc Kleine-Budde <mkl@pengut=
ronix.de>; David S. Miller <davem@davemloft.net>; Jakub Kicinski <kuba@kern=
el.org>; netdev@vger.kernel.org <netdev@vger.kernel.org>; linux-kernel <lin=
ux-kernel@vger.kernel.org>; PEAK-System support <support@peak-system.com>
Objet : Re: peak_usb: urb aborted


On 08.04.22 18:35, Paul Thomas wrote:
> Folks,
>
> I'm using a PCAN-USB adapter, and it seems to have a lot of trouble
> under medium load. I'm getting these urb aborted messages.
> [125054.082248] peak_usb 3-2.4.4:1.0 can0: Rx urb aborted (-71)
> [125077.886850] peak_usb 3-2.4.4:1.0 can0: Rx urb aborted (-32)

As I run the same hardware here it is very likely that you have a faulty
CAN bus setup with

- wrong bitrate setting / sample points / etc
- wrong or no termination
- missing or wrong configured (other) CAN nodes

I added the maintainer of the PEAK USB adapter (Stephane) to the
recipient list.

Having the linux-can mailing list and Stephane in the recipient list is
sufficient to answer the above details.

Regards,
Oliver

>
> Is there anything that can be done about this? This is very
> frustrating because it makes the USB adapter very difficult to use as
> a reliable partner of an embedded CAN device.
>
> I'm using Ubuntu with 5.4.0-107-generic. Any help would be appreciated.
>
> -Paul

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