linux-kernel - RE: peak_usb: urb aborted

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Message-ID: <DB6PR0301MB2518B82AEDB9FCE31A47E3E5D6EA9@DB6PR0301MB2518.eurprd03.prod.outlook.com>
Date:   Mon, 11 Apr 2022 13:07:24 +0000
From:   Stéphane Grosjean <s.grosjean@...k-system.com>
To:     Oliver Hartkopp <socketcan@...tkopp.net>,
        Paul Thomas <pthomas8589@...il.com>,
        "linux-can@...r.kernel.org" <linux-can@...r.kernel.org>
CC:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        PEAK-System support <support@...k-system.com>
Subject: RE: peak_usb: urb aborted

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 device 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@...tkopp.net>
Envoyé : vendredi 8 avril 2022 20:45
À : Paul Thomas <pthomas8589@...il.com>; linux-can@...r.kernel.org <linux-can@...r.kernel.org>; Stéphane Grosjean <s.grosjean@...k-system.com>
Cc : Wolfgang Grandegger <wg@...ndegger.com>; Marc Kleine-Budde <mkl@...gutronix.de>; David S. Miller <davem@...emloft.net>; Jakub Kicinski <kuba@...nel.org>; netdev@...r.kernel.org <netdev@...r.kernel.org>; linux-kernel <linux-kernel@...r.kernel.org>; PEAK-System support <support@...k-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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