Re: [alsa-devel] [RFC PATCH 5/7] soundwire: add debugfs support

[Pierre-Louis Bossart]

On 5/6/19 11:38 AM, Vinod Koul wrote:
> On 06-05-19, 09:48, Pierre-Louis Bossart wrote:
>
> > > > +struct dentry *sdw_bus_debugfs_get_root(struct sdw_bus_debugfs *d)
> > > > +{
> > > > +	if (d)
> > > > +		return d->fs;
> > > > +	return NULL;
> > > > +}
> > > > +EXPORT_SYMBOL(sdw_bus_debugfs_get_root);
> > >
> > > _GPL()?
> >
> > Oops, that's a big miss. will fix, thanks for spotting this.
>
> Not really. The Soundwire code is dual licensed. Many of the soundwire
> symbols are indeed exported as EXPORT_SYMBOL. But I agree this one is
> 'linux' specific so can be made _GPL.
>
> Pierre, does Intel still care about this being dual licensed or not?

Debugfs was never in scope for the dual-licensed parts, we've already 
agreed for SOF to move to _GPL.

> > > But why is this exported at all?  No one calls this function.
> >
> > I will have to check.
>
> It is used by codec driver which are not upstream yet. So my suggestion
> would be NOT to export this and only do so when we have users for it
> That would be true for other APIs exported out as well.

It'll just make the first codec driver patchset more complicated but fine.