Subject: Re: linux-next: build warning after merge of the vhost tree

From: "Michael S. Tsirkin" <[email-masked]>
Date: Mon, 7 Mar 2022 04:17:39 -0500

On Mon, Mar 07, 2022 at 02:46:40PM +0800, Xuan Zhuo wrote:
> On Mon, 7 Mar 2022 15:40:11 +1100, Stephen Rothwell <[email-masked]> wrote:
> > Hi all,
> >
> > After merging the vhost tree, today's linux-next build (arm
> > multi_v7_defconfig) produced this warning:
> >
> > drivers/net/virtio_net.c: In function 'virtnet_rx_vq_reset':
> > drivers/net/virtio_net.c:1823:63: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'int' [-Wformat=]
> >  1823 |                    "reset rx reset vq fail: rx queue index: %ld err: %d\n",
> >       |                                                             ~~^
> >       |                                                               |
> >       |                                                               long int
> >       |                                                             %d
> >  1824 |                    rq - vi->rq, err);
> >       |                    ~~~~~~~~~~~
> >       |                       |
> >       |                       int
> > drivers/net/virtio_net.c: In function 'virtnet_tx_vq_reset':
> > drivers/net/virtio_net.c:1873:63: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'int' [-Wformat=]
> >  1873 |                    "reset tx reset vq fail: tx queue index: %ld err: %d\n",
> >       |                                                             ~~^
> >       |                                                               |
> >       |                                                               long int
> >       |                                                             %d
> >  1874 |                    sq - vi->sq, err);
> >       |                    ~~~~~~~~~~~
> >       |                       |
> >       |                       int
> >
> > Introduced by commit
> >
> >   920ee0c540a2 ("virtio_net: support rx/tx queue reset")
> >
> 
> 
> Can you help me test this patch? I don't have an arm environment around me.
> 
> Thanks

You should at least use
https://mirrors.edge.kernel.org/pub/tools/crosstool/
to test-build + test on x86.

> 
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 1fa2d632a994..4d629d1ea894 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -1820,7 +1820,7 @@ static int virtnet_rx_vq_reset(struct virtnet_info *vi,
> 
>  err:
>         netdev_err(vi->dev,
> -                  "reset rx reset vq fail: rx queue index: %ld err: %d\n",
> +                  "reset rx reset vq fail: rx queue index: %td err: %d\n",
>                    rq - vi->rq, err);
>         virtnet_napi_enable(rq->vq, &rq->napi);
>         return err;
> @@ -1870,7 +1870,7 @@ static int virtnet_tx_vq_reset(struct virtnet_info *vi,
> 
>  err:
>         netdev_err(vi->dev,
> -                  "reset tx reset vq fail: tx queue index: %ld err: %d\n",
> +                  "reset tx reset vq fail: tx queue index: %td err: %d\n",
>                    sq - vi->sq, err);
>         virtnet_napi_tx_enable(vi, sq->vq, &sq->napi);
>         return err;
> 
> > --
> > Cheers,
> > Stephen Rothwell
> >