linux-kernel - Re: [PATCH v2 5/5] media: i2c: imx214: Fix cleanup after controls initialization error

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Message-ID: <CAPybu_1rw8eC=hMXfW1aS-_vJNDnNGTJEL+_k=xK=q5ajz7kRw@mail.gmail.com>
Date:   Sat, 28 Oct 2023 09:30:14 +0200
From:   Ricardo Ribalda Delgado <ribalda@...nel.org>
To:     André Apitzsch <git@...tzsch.eu>
Cc:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        Jacopo Mondi <jacopo.mondi@...asonboard.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v2 5/5] media: i2c: imx214: Fix cleanup after controls
 initialization error

Hi Andre

On Sat, Oct 28, 2023 at 9:19 AM André Apitzsch <git@...tzsch.eu> wrote:
>
> If the controls are initialized incorrectly, don't destroy the mutex not
> initialized yet and don't free controls as that is handled in
> imx214_ctrls_init().
>
> Signed-off-by: André Apitzsch <git@...tzsch.eu>

Since you are calling v4l2_ctrl_handler_free() in imx214_ctrls_init, I
think you should squash this patch with 2/5.

Sorry for asking for a follow-up patch :S

Regards!


> ---
>  drivers/media/i2c/imx214.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/i2c/imx214.c b/drivers/media/i2c/imx214.c
> index e0d9624a9d3f..0aba28d6dc2f 100644
> --- a/drivers/media/i2c/imx214.c
> +++ b/drivers/media/i2c/imx214.c
> @@ -1069,7 +1069,7 @@ static int imx214_probe(struct i2c_client *client)
>
>         ret = imx214_ctrls_init(imx214);
>         if (ret < 0)
> -               goto free_ctrl;
> +               goto error_power_off;
>
>         mutex_init(&imx214->mutex);
>         imx214->ctrls.lock = &imx214->mutex;
> @@ -1100,6 +1100,7 @@ static int imx214_probe(struct i2c_client *client)
>  free_ctrl:
>         mutex_destroy(&imx214->mutex);
>         v4l2_ctrl_handler_free(&imx214->ctrls);
> +error_power_off:
>         pm_runtime_disable(imx214->dev);
>
>         return ret;
>
> --
> 2.42.0
>