linux-kernel - Re: [PATCH net-next v2] gve: Simplify code and axe the use of a deprecated API

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Message-ID: <CAH_-1qyRsfFzm_F26WV4wSjMojTVQSdahASWTKXb7VgQPHHUNA@mail.gmail.com>
Date:   Thu, 1 Jul 2021 14:26:30 -0700
From:   Catherine Sullivan <csully@...gle.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Sagi Shahar <sagis@...gle.com>, Jon Olson <jonolson@...gle.com>,
        David Miller <davem@...emloft.net>, kuba@...nel.org,
        David Awogbemila <awogbemila@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Yangchun Fu <yangchun@...gle.com>,
        Bailey Forrest <bcf@...gle.com>, Kuo Zhao <kuozhao@...gle.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH net-next v2] gve: Simplify code and axe the use of a
 deprecated API

On Thu, Jul 1, 2021 at 1:41 PM Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> The wrappers in include/linux/pci-dma-compat.h should go away.
>
> Replace 'pci_set_dma_mask/pci_set_consistent_dma_mask' by an equivalent
> and less verbose 'dma_set_mask_and_coherent()' call.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Catherine Sullivan <csully@...gle.com>

> ---
> If needed, see post from Christoph Hellwig on the kernel-janitors ML:
>    https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
>
> v2: Unchanged
>     This patch was previously 3/3 of a serie
> ---
>  drivers/net/ethernet/google/gve/gve_main.c | 9 +--------
>  1 file changed, 1 insertion(+), 8 deletions(-)
>
> diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
> index c03984b26db4..099a2bc5ae67 100644
> --- a/drivers/net/ethernet/google/gve/gve_main.c
> +++ b/drivers/net/ethernet/google/gve/gve_main.c
> @@ -1477,19 +1477,12 @@ static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>
>         pci_set_master(pdev);
>
> -       err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
> +       err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
>         if (err) {
>                 dev_err(&pdev->dev, "Failed to set dma mask: err=%d\n", err);
>                 goto abort_with_pci_region;
>         }
>
> -       err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
> -       if (err) {
> -               dev_err(&pdev->dev,
> -                       "Failed to set consistent dma mask: err=%d\n", err);
> -               goto abort_with_pci_region;
> -       }
> -
>         reg_bar = pci_iomap(pdev, GVE_REGISTER_BAR, 0);
>         if (!reg_bar) {
>                 dev_err(&pdev->dev, "Failed to map pci bar!\n");
> --
> 2.30.2
>

Thanks!