linux-kernel - Re: [PATCH v2 5/5] soundwire: intel: free all resources on hw

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Message-ID: <20200212101554.GB2618@vkoul-mobl>
Date:   Wed, 12 Feb 2020 15:45:54 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        jank@...ence.com, srinivas.kandagatla@...aro.org,
        slawomir.blauciak@...el.com,
        Bard liao <yung-chuan.liao@...ux.intel.com>,
        Rander Wang <rander.wang@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [PATCH v2 5/5] soundwire: intel: free all resources on hw_free()

On 14-01-20, 17:42, Pierre-Louis Bossart wrote:
> Make sure all calls to the SoundWire stream API are done and involve
> callback
> 
> Signed-off-by: Rander Wang <rander.wang@...ux.intel.com>
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> ---
>  drivers/soundwire/intel.c | 40 +++++++++++++++++++++++++++++++++++++--
>  1 file changed, 38 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
> index c498812522ab..e0c1fff7c4a0 100644
> --- a/drivers/soundwire/intel.c
> +++ b/drivers/soundwire/intel.c
> @@ -550,6 +550,25 @@ static int intel_params_stream(struct sdw_intel *sdw,
>  	return -EIO;
>  }
>  
> +static int intel_free_stream(struct sdw_intel *sdw,
> +			     struct snd_pcm_substream *substream,
> +			     struct snd_soc_dai *dai,
> +			     int link_id)
> +{
> +	struct sdw_intel_link_res *res = sdw->link_res;
> +	struct sdw_intel_stream_free_data free_data;

where is this struct sdw_intel_stream_free_data defined. I dont see it
in this patch or this series..

> +
> +	free_data.substream = substream;
> +	free_data.dai = dai;
> +	free_data.link_id = link_id;
> +
> +	if (res->ops && res->ops->free_stream && res->dev)
> +		return res->ops->free_stream(res->dev,
> +					     &free_data);
> +
> +	return 0;
> +}
> +
>  /*
>   * bank switch routines
>   */
> @@ -817,6 +836,7 @@ static int
>  intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
>  {
>  	struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai);
> +	struct sdw_intel *sdw = cdns_to_intel(cdns);
>  	struct sdw_cdns_dma_data *dma;
>  	int ret;
>  
> @@ -824,12 +844,28 @@ intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
>  	if (!dma)
>  		return -EIO;
>  
> +	ret = sdw_deprepare_stream(dma->stream);
> +	if (ret) {
> +		dev_err(dai->dev, "sdw_deprepare_stream: failed %d", ret);
> +		return ret;
> +	}
> +
>  	ret = sdw_stream_remove_master(&cdns->bus, dma->stream);
> -	if (ret < 0)
> +	if (ret < 0) {
>  		dev_err(dai->dev, "remove master from stream %s failed: %d\n",
>  			dma->stream->name, ret);
> +		return ret;
> +	}
>  
> -	return ret;
> +	ret = intel_free_stream(sdw, substream, dai, sdw->instance);
> +	if (ret < 0) {
> +		dev_err(dai->dev, "intel_free_stream: failed %d", ret);
> +		return ret;
> +	}
> +
> +	sdw_release_stream(dma->stream);

I think, free the 'name' here would be apt

-- 
~Vinod