[PATCH] ASoC: soc-jack: calling snd_soc_jack_report causes a null pointer access

[mnlife qiao]

> From: mnlife <mnlife at foxmail.com>
>
> When snd_soc_card_jack_new is not called or the call fails,
> calling this function causes a null pointer access
>
> Signed-off-by: mnlife <mnlife at foxmail.com>
> ---
>  sound/soc/soc-jack.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
> index 0f1820f36b4d..51b799ee98b7 100644
> --- a/sound/soc/soc-jack.c
> +++ b/sound/soc/soc-jack.c
> @@ -44,7 +44,7 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
>         unsigned int sync = 0;
>         int enable;
>
> -       if (!jack)
> +       if (!jack || !jack->jack)
>                 return;
>         trace_snd_soc_jack_report(jack, mask, status);
>
> --
> 2.17.1
>
>