linux-kernel - Re: [alsa-devel] [PATCH V2 2/2] ASoC: ak4458: add return value for ak4458_probe

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Date:   Mon, 13 May 2019 14:14:35 +0300
From:   Daniel Baluta <daniel.baluta@...il.com>
To:     Viorel Suman <viorel.suman@....com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        "S.j. Wang" <shengjiu.wang@....com>,
        Daniel Baluta <daniel.baluta@....com>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Colin Ian King <colin.king@...onical.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Viorel Suman <viorel.suman@...il.com>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [alsa-devel] [PATCH V2 2/2] ASoC: ak4458: add return value for ak4458_probe

On Mon, May 13, 2019 at 1:05 PM Viorel Suman <viorel.suman@....com> wrote:
>
> AK4458 is probed successfully even if AK4458 is not present - this
> is caused by probe function returning no error on i2c access failure.
> Return an error on probe if i2c access has failed.
>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> Signed-off-by: Viorel Suman <viorel.suman@....com>

Reviewed-by: Daniel Baluta <daniel.baluta@....com>

> ---
>  sound/soc/codecs/ak4458.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/sound/soc/codecs/ak4458.c b/sound/soc/codecs/ak4458.c
> index baf990a..7156215 100644
> --- a/sound/soc/codecs/ak4458.c
> +++ b/sound/soc/codecs/ak4458.c
> @@ -539,9 +539,10 @@ static void ak4458_power_on(struct ak4458_priv *ak4458)
>         }
>  }
>
> -static void ak4458_init(struct snd_soc_component *component)
> +static int ak4458_init(struct snd_soc_component *component)
>  {
>         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
> +       int ret;
>
>         /* External Mute ON */
>         if (ak4458->mute_gpiod)
> @@ -549,21 +550,21 @@ static void ak4458_init(struct snd_soc_component *component)
>
>         ak4458_power_on(ak4458);
>
> -       snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
> +       ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
>                             0x80, 0x80);   /* ACKS bit = 1; 10000000 */
> +       if (ret < 0)
> +               return ret;
>
> -       ak4458_rstn_control(component, 1);
> +       return ak4458_rstn_control(component, 1);
>  }
>
>  static int ak4458_probe(struct snd_soc_component *component)
>  {
>         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
>
> -       ak4458_init(component);
> -
>         ak4458->fs = 48000;
>
> -       return 0;
> +       return ak4458_init(component);
>  }
>
>  static void ak4458_remove(struct snd_soc_component *component)
> --
> 2.7.4
>
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@...a-project.org
> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel

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