netdev - Re: [PATCH] can: xilinx_can: remove redundent netif_napi_del from xcan

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Date:   Tue, 19 Oct 2021 09:44:12 +0800
From:   Dongliang Mu <mudongliangabcd@...il.com>
To:     Marc Kleine-Budde <mkl@...gutronix.de>
Cc:     Appana Durga Kedareswara rao <appana.durga.rao@...inx.com>,
        Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        linux-can@...r.kernel.org,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] can: xilinx_can: remove redundent netif_napi_del from xcan_remove

On Mon, Oct 18, 2021 at 6:48 PM Marc Kleine-Budde <mkl@...gutronix.de> wrote:
>
> On 17.10.2021 20:50:21, Dongliang Mu wrote:
> > Since netif_napi_del is already done in the free_candev, so we remove
> > this redundent netif_napi_del invocation. In addition, this patch can
> > match the operations in the xcan_probe and xcan_remove functions.
> >
> > Signed-off-by: Dongliang Mu <mudongliangabcd@...il.com>
> > ---
> >  drivers/net/can/xilinx_can.c | 1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
> > index 3b883e607d8b..60a3fb369058 100644
> > --- a/drivers/net/can/xilinx_can.c
> > +++ b/drivers/net/can/xilinx_can.c
> > @@ -1848,7 +1848,6 @@ static int xcan_remove(struct platform_device *pdev)
> >
> >       unregister_candev(ndev);
> >       pm_runtime_disable(&pdev->dev);
> > -     netif_napi_del(&priv->napi);
> >       free_candev(ndev);
> >
> >       return 0;
>
> Fixed the following error:
>
> | drivers/net/can/xilinx_can.c: In function ‘xcan_remove’:
> | drivers/net/can/xilinx_can.c:1847:20: error: unused variable ‘priv’ [-Werror=unused-variable]
> |  1847 |  struct xcan_priv *priv = netdev_priv(ndev);
> |       |                    ^~~~

For now, xilinx_can already enables "-Werror" proposed by Linus?

That's my problem. Sorry for that.

>
> regards,
> Marc
>
> --
> Pengutronix e.K.                 | Marc Kleine-Budde           |
> Embedded Linux                   | https://www.pengutronix.de  |
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