linux-kernel - Re: [PATCH] ASoC: fsl_rpmsg: Fix error handler with pm_runtime

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Date: Wed, 27 Dec 2023 18:13:51 +0800
From: Shengjiu Wang <shengjiu.wang@...il.com>
To: Chancel Liu <chancel.liu@....com>
Cc: Xiubo.Lee@...il.com, festevam@...il.com, nicoleotsuka@...il.com, 
	lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz, tiwai@...e.com, 
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org, 
	linuxppc-dev@...ts.ozlabs.org, linux-sound@...r.kernel.org
Subject: Re: [PATCH] ASoC: fsl_rpmsg: Fix error handler with pm_runtime_enable

On Mon, Dec 25, 2023 at 4:06 PM Chancel Liu <chancel.liu@....com> wrote:
>
> There is error message when defer probe happens:
>
> fsl_rpmsg rpmsg_audio: Unbalanced pm_runtime_enable!
>
> Fix the error handler with pm_runtime_enable.
>
> Fixes: b73d9e6225e8 ("ASoC: fsl_rpmsg: Add CPU DAI driver for audio base on rpmsg")
> Signed-off-by: Chancel Liu <chancel.liu@....com>

Acked-by: Shengjiu Wang <shengjiu.wang@...il.com>

Best regards
wang shengjiu
> ---
>  sound/soc/fsl/fsl_rpmsg.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/sound/soc/fsl/fsl_rpmsg.c b/sound/soc/fsl/fsl_rpmsg.c
> index 5c5c04ce9db7..00852f174a69 100644
> --- a/sound/soc/fsl/fsl_rpmsg.c
> +++ b/sound/soc/fsl/fsl_rpmsg.c
> @@ -238,7 +238,7 @@ static int fsl_rpmsg_probe(struct platform_device *pdev)
>         ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
>                                               &fsl_rpmsg_dai, 1);
>         if (ret)
> -               return ret;
> +               goto err_pm_disable;
>
>         rpmsg->card_pdev = platform_device_register_data(&pdev->dev,
>                                                          "imx-audio-rpmsg",
> @@ -248,16 +248,22 @@ static int fsl_rpmsg_probe(struct platform_device *pdev)
>         if (IS_ERR(rpmsg->card_pdev)) {
>                 dev_err(&pdev->dev, "failed to register rpmsg card\n");
>                 ret = PTR_ERR(rpmsg->card_pdev);
> -               return ret;
> +               goto err_pm_disable;
>         }
>
>         return 0;
> +
> +err_pm_disable:
> +       pm_runtime_disable(&pdev->dev);
> +       return ret;
>  }
>
>  static void fsl_rpmsg_remove(struct platform_device *pdev)
>  {
>         struct fsl_rpmsg *rpmsg = platform_get_drvdata(pdev);
>
> +       pm_runtime_disable(&pdev->dev);
> +
>         if (rpmsg->card_pdev)
>                 platform_device_unregister(rpmsg->card_pdev);
>  }
> --
> 2.42.0
>