Re: [PATCH] documentation: networking: can: Document alloc_candev_mqs()

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On 21.05.2025 11:51:21, Geert Uytterhoeven wrote:
> Since the introduction of alloc_candev_mqs() and friends, there is no
> longer a need to allocate a generic network device and perform explicit
> CAN-specific setup.  Remove the code showing this setup, and document
> alloc_candev_mqs() instead.

Makes sense.

> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> ---
> Dunno if this deserves
> Fixes: 39549eef3587f1c1 ("can: CAN Network device driver and Netlink interface")
> 
>  Documentation/networking/can.rst | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/networking/can.rst b/Documentation/networking/can.rst
> index b018ce346392652b..784dbd19b140d262 100644
> --- a/Documentation/networking/can.rst
> +++ b/Documentation/networking/can.rst
> @@ -1106,13 +1106,10 @@ General Settings
>  
>  .. code-block:: C

This breaks the rst rendering. I think you should remove the "..
code-block:: C"...

>  
> -    dev->type  = ARPHRD_CAN; /* the netdevice hardware type */
> -    dev->flags = IFF_NOARP;  /* CAN has no arp */
> +CAN network device drivers can use alloc_candev_mqs() and friends instead of
> +alloc_netdev_mqs(), to automatically take care of CAN-specific setup:

and add a second ":" after "setup:"

>  
> -    dev->mtu = CAN_MTU; /* sizeof(struct can_frame) -> Classical CAN interface */
> -
> -    or alternative, when the controller supports CAN with flexible data rate:
> -    dev->mtu = CANFD_MTU; /* sizeof(struct canfd_frame) -> CAN FD interface */
> +    dev = alloc_candev_mqs(...);
>  
>  The struct can_frame or struct canfd_frame is the payload of each socket
>  buffer (skbuff) in the protocol family PF_CAN.

regards,
Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde          |
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