linux-kernel - Re: [PATCH 5.9 080/391] ASoC: SOF: fix a runtime pm issue in SOF when HDMI codec doesnt work

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Message-ID: <64a618a3cc00de4a1c3887b57447906351db77b9.camel@tiscali.nl>
Date:   Thu, 05 Nov 2020 14:23:35 +0100
From:   Paul Bolle <pebolle@...cali.nl>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     stable@...r.kernel.org, Rander Wang <rander.wang@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 5.9 080/391] ASoC: SOF: fix a runtime pm issue in SOF
 when HDMI codec doesnt work

Greg Kroah-Hartman schreef op di 03-11-2020 om 21:32 [+0100]:
> From: Rander Wang <rander.wang@...el.com>
> 
> [ Upstream commit 6c63c954e1c52f1262f986f36d95f557c6f8fa94 ]
> 
> When hda_codec_probe() doesn't initialize audio component, we disable
> the codec and keep going. However,the resources are not released. The
> child_count of SOF device is increased in snd_hdac_ext_bus_device_init
> but is not decrease in error case, so SOF can't get suspended.
> 
> snd_hdac_ext_bus_device_exit will be invoked in HDA framework if it
> gets a error. Now copy this behavior to release resources and decrease
> SOF device child_count to release SOF device.
> 
> Signed-off-by: Rander Wang <rander.wang@...el.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> Reviewed-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
> Signed-off-by: Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
> Link: https://lore.kernel.org/r/20200825235040.1586478-3-ranjani.sridharan@linux.intel.com
> Signed-off-by: Mark Brown <broonie@...nel.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  sound/soc/sof/intel/hda-codec.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/sof/intel/hda-codec.c b/sound/soc/sof/intel/hda-codec.c
> index 2c5c451fa19d7..c475955c6eeba 100644
> --- a/sound/soc/sof/intel/hda-codec.c
> +++ b/sound/soc/sof/intel/hda-codec.c
> @@ -151,7 +151,7 @@ static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
>  		if (!hdev->bus->audio_component) {
>  			dev_dbg(sdev->dev,
>  				"iDisp hw present but no driver\n");
> -			return -ENOENT;
> +			goto error;
>  		}
>  		hda_priv->need_display_power = true;
>  	}
> @@ -174,7 +174,7 @@ static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
>  		 * other return codes without modification
>  		 */
>  		if (ret == 0)
> -			ret = -ENOENT;
> +			goto error;
>  	}
>  
>  	return ret;

My local build of v5.9.5 broke on this patch.

sound/soc/sof/intel/hda-codec.c: In function 'hda_codec_probe': 
sound/soc/sof/intel/hda-codec.c:177:4: error: label 'error' used but not defined 
  177 |    goto error; 
      |    ^~~~ 
make[4]: *** [scripts/Makefile.build:283: sound/soc/sof/intel/hda-codec.o] Error 1 
make[3]: *** [scripts/Makefile.build:500: sound/soc/sof/intel] Error 2 
make[2]: *** [scripts/Makefile.build:500: sound/soc/sof] Error 2 
make[1]: *** [scripts/Makefile.build:500: sound/soc] Error 2 
make: *** [Makefile:1778: sound] Error 2

There's indeed no error label in v5.9.5. (There is one in v5.10-rc2, I just
checked.) Is no-one else running into this?

Thanks,


Paul Bolle