[alsa-devel] [PATCH v3 01/14] ASoC: SOF: Add Sound Open Firmware driver core

[Pierre-Louis Bossart]

On 12/12/18 1:51 AM, Takashi Iwai wrote:
> On Tue, 11 Dec 2018 22:23:05 +0100,
> Pierre-Louis Bossart wrote:
>> +static int sof_probe(struct platform_device *pdev)
>> +{
> ....
>> +	/* register any debug/trace capabilities */
>> +	ret = snd_sof_dbg_init(sdev);
>> +	if (ret < 0) {
>> +		dev_err(sdev->dev, "error: failed to init DSP trace/debug %d\n",
>> +			ret);
>> +		goto dbg_err;
>> +	}
> So that's the problem Andy suggested.
> snd_sof_dbg_init() returns an error for whatever reason, and this is
> considered as a fatal error and the probe fails.  The error about
> debugfs is no fatal error, it should continue.
>
> Moreover, as I mentioned for another patch (I read that before this
> one due to the mail delivery order :), it would fail always when
> CONFIG_DEBUGFS=n.  At best, create a wrapper for CONFIG_DEBUGFS=n to
> return 0 (and void for free).
ok. we'll fix this, point taken.