linux-kernel - Re: [PATCH] media: ov772x: Disable clk on error path

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Message-ID: <20180816101351.GB19047@w540>
Date:   Thu, 16 Aug 2018 12:13:51 +0200
From:   jacopo mondi <jacopo@...ndi.org>
To:     Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        ldv-project@...uxtesting.org
Subject: Re: [PATCH] media: ov772x: Disable clk on error path

Hello Alexey,
   thanks for the patch

On Wed, Aug 15, 2018 at 11:10:39PM +0300, Alexey Khoroshilov wrote:
> If ov772x_power_on() is unable to get GPIO rstb,
> the clock is left undisabled.
>
> Found by Linux Driver Verification project (linuxtesting.org).
>

Acked-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>

Thanks
   j

> ---
>  drivers/media/i2c/ov772x.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c
> index e2550708abc8..7b62bf1fc5b1 100644
> --- a/drivers/media/i2c/ov772x.c
> +++ b/drivers/media/i2c/ov772x.c
> @@ -828,6 +828,7 @@ static int ov772x_power_on(struct ov772x_priv *priv)
>  					     GPIOD_OUT_LOW);
>  	if (IS_ERR(priv->rstb_gpio)) {
>  		dev_info(&client->dev, "Unable to get GPIO \"rstb\"");
> +		clk_disable_unprepare(priv->clk);
>  		return PTR_ERR(priv->rstb_gpio);
>  	}
>
> --
> 2.7.4
>

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