linux-kernel - Re: [PATCH] media: vpif: Fix runtime PM imbalance in vpif

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Date:   Wed, 27 May 2020 18:26:25 +0100
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Dinghao Liu <dinghao.liu@....edu.cn>
Cc:     Kangjie Lu <kjlu@....edu>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media <linux-media@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: vpif: Fix runtime PM imbalance in vpif_probe

Hi Dinghao,

Thank you for the patch.

On Sat, May 23, 2020 at 12:49 PM Dinghao Liu <dinghao.liu@....edu.cn> wrote:
>
> When platform_get_resource() returns an error code, a
> pairing runtime PM usage counter decrement is needed
> to keep the counter balanced.
>
> Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
> ---
>  drivers/media/platform/davinci/vpif.c | 1 +
>  1 file changed, 1 insertion(+)
>
Reviewed-by: Lad Prabhakar <prabhakar.csengg@...il.com>

Cheers,
--Prabhakar

> diff --git a/drivers/media/platform/davinci/vpif.c b/drivers/media/platform/davinci/vpif.c
> index df66461f5d4f..f28c1b27eac6 100644
> --- a/drivers/media/platform/davinci/vpif.c
> +++ b/drivers/media/platform/davinci/vpif.c
> @@ -458,6 +458,7 @@ static int vpif_probe(struct platform_device *pdev)
>         res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
>         if (!res_irq) {
>                 dev_warn(&pdev->dev, "Missing IRQ resource.\n");
> +               pm_runtime_put(&pdev->dev);
>                 return -EINVAL;
>         }
>
> --
> 2.17.1
>