linux-kernel - Re: [PATCH net-next] can: dev: call netif_carrier_off() in register

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Message-ID: <CA+FuTSeHhz1kntLyeUfAB4ZbtYjO1=Ornwse-yQbPwo5c-_2=g@mail.gmail.com>
Date:   Mon, 24 Jun 2019 13:26:18 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>
Cc:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Rasmus Villemoes <Rasmus.Villemoes@...vas.se>,
        "linux-can@...r.kernel.org" <linux-can@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] can: dev: call netif_carrier_off() in register_candev()

On Mon, Jun 24, 2019 at 4:34 AM Rasmus Villemoes
<rasmus.villemoes@...vas.dk> wrote:
>
> CONFIG_CAN_LEDS is deprecated. When trying to use the generic netdev
> trigger as suggested, there's a small inconsistency with the link
> property: The LED is on initially, stays on when the device is brought
> up, and then turns off (as expected) when the device is brought down.
>
> Make sure the LED always reflects the state of the CAN device.
>
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@...vas.dk>

Should this target net? Regardless of CONFIG_CAN_LEDS deprecation,
this is already not initialized properly if that CONFIG is disabled
and a can_led_event call at device probe is a noop.