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Date:   Fri, 5 Mar 2021 12:14:01 +0100 (CET)
From:   Dario Binacchi <dariobin@libero.it>
To:     Marc Kleine-Budde <mkl@pengutronix.de>
Cc:     linux-kernel@vger.kernel.org,
        Alexander Stein <alexander.stein@systec-electronic.com>,
        Federico Vaga <federico.vaga@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Oliver Hartkopp <socketcan@hartkopp.net>,
        Vincent Mailhol <mailhol.vincent@wanadoo.fr>,
        Wolfgang Grandegger <wg@grandegger.com>,
        YueHaibing <yuehaibing@huawei.com>,
        Zhang Qilong <zhangqilong3@huawei.com>,
        linux-can@vger.kernel.org, netdev@vger.kernel.org
Message-ID: <1019942000.124735.1614942841458@mail1.libero.it>
In-Reply-To: <20210304152618.rqajqmzcqqhszfem@pengutronix.de>
References: <20210302215435.18286-1-dariobin@libero.it>
 <20210302215435.18286-6-dariobin@libero.it>
 <20210304152618.rqajqmzcqqhszfem@pengutronix.de>
Subject: Re: [PATCH v4 5/6] can: c_can: prepare to up the message objects
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> Il 04/03/2021 16:26 Marc Kleine-Budde <mkl@pengutronix.de> ha scritto:
> 
>  
> On 02.03.2021 22:54:34, Dario Binacchi wrote:
> > diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
> > index 77b9aee56154..0052ba5197e0 100644
> > --- a/drivers/net/can/c_can/c_can.c
> > +++ b/drivers/net/can/c_can/c_can.c
> [...]
> > -struct net_device *alloc_c_can_dev(void)
> > +struct net_device *alloc_c_can_dev(int msg_obj_num)
> >  {
> >  	struct net_device *dev;
> >  	struct c_can_priv *priv;
> > +	int msg_obj_tx_num = msg_obj_num / 2;
> >  
> > -	dev = alloc_candev(sizeof(struct c_can_priv), C_CAN_MSG_OBJ_TX_NUM);
> > +	dev = alloc_candev(sizeof(*priv) + sizeof(u32) * msg_obj_tx_num,
> > +			   msg_obj_tx_num);
> 
> I've converted this to make use of the struct_size() macro:
> 
> +       dev = alloc_candev(struct_size(priv, dlc, msg_obj_tx_num),
> +                          msg_obj_tx_num);
> 

Nice!
I learned a new thing.

Thanks and regards,
Dario

> regards,
> Marc
> 
> -- 
> Pengutronix e.K.                 | Marc Kleine-Budde           |
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