linux-kernel - Re: [RFC PATCH 2/2] ASoC: SOF: trigger re-probing of deferred devices from workqueue

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Date:   Wed, 18 Aug 2021 13:07:00 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, tiwai@...e.de, vkoul@...nel.org,
        liam.r.girdwood@...ux.intel.com,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Christoph Hellwig <hch@....de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Daniel Baluta <daniel.baluta@....com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        "moderated list:SOUND - SOUND OPEN FIRMWARE (SOF) DRIVERS" 
        <sound-open-firmware@...a-project.org>
Subject: Re: [RFC PATCH 2/2] ASoC: SOF: trigger re-probing of deferred
 devices from workqueue

On Tue, Aug 17, 2021 at 02:00:57PM -0500, Pierre-Louis Bossart wrote:

> +++ b/sound/soc/sof/core.c
> @@ -251,6 +251,9 @@ static int sof_probe_continue(struct snd_sof_dev *sdev)
>  
>  	sdev->probe_completed = true;
>  
> +	/* kick-off re-probing of deferred devices */
> +	driver_deferred_probe_trigger();
> +

I think we should move this into snd_soc_register_component() - the same
issue could occur with any other component, the only other thing I can
see kicking in here is the machine driver registration but that ought to
kick probe itself anyway.  Or is there some other case here?

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