linux-kernel - Re: [PATCH 2/2] ASoC: samsung: i2s: Fix multiple "IIS multi" devices initialization

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Date:   Mon, 18 Feb 2019 12:33:40 +0100
From:   Sylwester Nawrocki <s.nawrocki@...sung.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     broonie@...nel.org, lgirdwood@...il.com, sbkim73@...sung.com,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ASoC: samsung: i2s: Fix multiple "IIS multi"
 devices initialization

On 2/18/19 12:00, Krzysztof Kozlowski wrote:
> On Fri, 15 Feb 2019 at 15:48, Sylwester Nawrocki <s.nawrocki@...sung.com> wrote:

>> diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
>> index e36c44e2f1bb..4a6dd86459bc 100644
>> --- a/sound/soc/samsung/i2s.c
>> +++ b/sound/soc/samsung/i2s.c
>> @@ -1339,20 +1339,34 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
>>  /* Create platform device for the secondary PCM */
>>  static int i2s_create_secondary_device(struct samsung_i2s_priv *priv)
>>  {
[...]
>> +       ret = platform_device_add(pdev_sec);
>>         if (ret < 0) {
>> -               dev_info(&pdev->dev, "device_attach() failed\n");
>> +               platform_device_put(pdev_sec);
>>                 return ret;
>>         }
>>
>> -       priv->pdev_sec = pdev;
>> +       priv->pdev_sec = pdev_sec;
>> +
>> +       ret = device_attach(&pdev_sec->dev);
>> +       if (ret < 0) {
>> +               dev_info(&pdev_sec->dev, "device_attach() failed\n");
> 
> Don't you need here platform_device_unregister()?

It's in i2s_delete_secondary_device(), but it might be better
indeed to add it here and move the priv->pdev_sec assignment
to the end making it a last step. 

-- 
Thanks,
Sylwester