linux-kernel - Re: [PATCH v2 1/1] can: esd_usb: Allow REC and TEC to return to zero

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Message-ID: <20221202151320.7pimdtgqehi4x77k@pengutronix.de>
Date:   Fri, 2 Dec 2022 16:13:20 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Frank Jungclaus <frank.jungclaus@....eu>
Cc:     linux-can@...r.kernel.org, Wolfgang Grandegger <wg@...ndegger.com>,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>,
        Stefan Mätje <stefan.maetje@....eu>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] can: esd_usb: Allow REC and TEC to return to zero

On 30.11.2022 21:22:42, Frank Jungclaus wrote:
> We don't get any further EVENT from an esd CAN USB device for changes
> on REC or TEC while those counters converge to 0 (with ecc == 0).
> So when handling the "Back to Error Active"-event force
> txerr = rxerr = 0, otherwise the berr-counters might stay on
> values like 95 forever ...
> 
> Also, to make life easier during the ongoing development a
> netdev_dbg() has been introduced to allow dumping error events send by
> an esd CAN USB device.
> 
> Fixes: 96d8e90382dc ("can: Add driver for esd CAN-USB/2 device")
> Signed-off-by: Frank Jungclaus <frank.jungclaus@....eu>

Added to linux-can. It will go into the net/master after v6.1.

Marc

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