linux-kernel - Re: [PATCH] can: dev: alloc_candev_mqs(): add missing default CAN capabilitied

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Message-ID: <137dcd58-32eb-45f0-888d-33573eb78f58@hartkopp.net>
Date: Fri, 16 Jan 2026 15:45:31 +0100
From: Oliver Hartkopp <socketcan@...tkopp.net>
To: Marc Kleine-Budde <mkl@...gutronix.de>,
 Vincent Mailhol <mailhol@...nel.org>
Cc: linux-can@...r.kernel.org, linux-kernel@...r.kernel.org,
 kernel@...gutronix.de
Subject: Re: [PATCH] can: dev: alloc_candev_mqs(): add missing default CAN
 capabilitied

On 16.01.26 14:10, Oliver Hartkopp wrote:
> On 16.01.26 13:44, Marc Kleine-Budde wrote:

>> However, in commit 166e87329ce6 ("can: propagate CAN device capabilities
>> via ml_priv"), the capabilities of CAN devices are not initialized.
>> This results in CAN-RAW rejecting all CAN frames on devices directly
>> after ifup if the user space has not changed the CAN control mode.
> 
> Ah! It's about setting the bitrate without changing the control mode.
> 
> Sorry. I tested multiple configurations several times but missed the 
> most simple one as initial test :-/
> 
> Acked-by: Oliver Hartkopp <socketcan@...tkopp.net>

Tested-by: Oliver Hartkopp <socketcan@...tkopp.net>