linux-kernel - Re: [PATCH] drm/bridge: lt9611: Fix an error handling path in lt9611

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Message-ID: <CAG3jFytrA4D2-JrABb+iG2kFQHVB5-_UQWoQyFJ3R=rfarre-A@mail.gmail.com>
Date:   Mon, 31 Jan 2022 17:25:22 +0100
From:   Robert Foss <robert.foss@...aro.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/bridge: lt9611: Fix an error handling path in lt9611_probe()

Hey Christophe,

Thanks for submitting this fix.

On Sat, 29 Jan 2022 at 16:06, Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> If lt9611_audio_init() fails, some resources still need to be released
> before returning an error code.
>
> Add the missing goto the error handling path.
>
> Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>  drivers/gpu/drm/bridge/lontium-lt9611.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
> index dafb1b47c15f..00597eb54661 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt9611.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
> @@ -1164,7 +1164,11 @@ static int lt9611_probe(struct i2c_client *client,
>
>         lt9611_enable_hpd_interrupts(lt9611);
>
> -       return lt9611_audio_init(dev, lt9611);
> +       ret = lt9611_audio_init(dev, lt9611);
> +       if (ret)
> +               goto err_remove_bridge;
> +
> +       return 0;
>
>  err_remove_bridge:
>         drm_bridge_remove(&lt9611->bridge);
> --
> 2.32.0
>

Reviewed-by: Robert Foss <robert.foss@...aro.org>