linux-kernel - Re: [alsa-devel] [RFC PATCH 8/9] soundwire: intel: remove platform devices and provide new interface

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Message-ID: <20190918120629.GD1901208@kroah.com>
Date:   Wed, 18 Sep 2019 14:06:29 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, tiwai@...e.de,
        linux-kernel@...r.kernel.org,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        vkoul@...nel.org, broonie@...nel.org,
        srinivas.kandagatla@...aro.org, jank@...ence.com,
        slawomir.blauciak@...el.com, Sanyog Kale <sanyog.r.kale@...el.com>,
        Bard liao <yung-chuan.liao@...ux.intel.com>,
        Rander Wang <rander.wang@...ux.intel.com>
Subject: Re: [alsa-devel] [RFC PATCH 8/9] soundwire: intel: remove platform
 devices and provide new interface

On Tue, Sep 17, 2019 at 09:29:52AM -0500, Pierre-Louis Bossart wrote:
> On 9/17/19 12:55 AM, Greg KH wrote:
> > On Mon, Sep 16, 2019 at 04:23:41PM -0500, Pierre-Louis Bossart wrote:
> > > +/**
> > > + * sdw_intel_probe() - SoundWire Intel probe routine
> > > + * @parent_handle: ACPI parent handle
> > > + * @res: resource data
> > > + *
> > > + * This creates SoundWire Master and Slave devices below the controller.
> > > + * All the information necessary is stored in the context, and the res
> > > + * argument pointer can be freed after this step.
> > > + */
> > > +struct sdw_intel_ctx
> > > +*sdw_intel_probe(struct sdw_intel_res *res)
> > > +{
> > > +	return sdw_intel_probe_controller(res);
> > > +}
> > > +EXPORT_SYMBOL(sdw_intel_probe);
> > > +
> > > +/**
> > > + * sdw_intel_startup() - SoundWire Intel startup
> > > + * @ctx: SoundWire context allocated in the probe
> > > + *
> > > + */
> > > +int sdw_intel_startup(struct sdw_intel_ctx *ctx)
> > > +{
> > > +	return sdw_intel_startup_controller(ctx);
> > > +}
> > > +EXPORT_SYMBOL(sdw_intel_startup);
> > 
> > Why are you exporting these functions if no one calls them?
> 
> They are used in the next series, see '[RFC PATCH 04/12] ASoC: SOF: Intel:
> add SoundWire configuration interface'

That wasn't obvious :)

Also, why not EXPORT_SYMBOL_GPL()?  :)

thanks,

greg k-h