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Subject: Re: [PATCH v2 1/1] can: ucan: add driver for Theobroma Systems UCAN
 devices
To:     Wolfgang Grandegger <wg@grandegger.com>
Cc:     Martin Elshuber <martin.elshuber@theobroma-systems.com>,
        Philipp Tomsich <philipp.tomsich@theobroma-systems.com>,
        Marc Kleine-Budde <mkl@pengutronix.de>,
        linux-can@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20180313173520.21257-1-jakob.unterwurzacher@theobroma-systems.com>
 <20180313173520.21257-2-jakob.unterwurzacher@theobroma-systems.com>
 <d7986f8f-6c52-bf39-93f0-7a837bd85241@grandegger.com>
From:   Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
Message-ID: <03024ab7-5386-3bcf-76f2-ef2e0e9e7a78@theobroma-systems.com>
Date:   Wed, 14 Mar 2018 10:14:25 +0100
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On 14.03.18 10:11, Wolfgang Grandegger wrote:
>> +    /* handle error frames */
>> +    canid = le32_to_cpu(m->msg.can_msg.id);
>> +    if (canid & CAN_ERR_FLAG) {
>> +        ucan_handle_error_frame(up, m, canid);
>> +        /* drop frame if berr-reporting is off */
>> +        if (!(up->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING))
>> +            return;
>> +    }
> 
> You still do not generate error messages for state changes, IIUC.

The hardware generates error frames on state changes - is that what you 
mean?

In our testing, the state shows up (and updates) correctly in

	ip -details -statistics link show can0

Best regards,
Jakob