linux-kernel - Re: disabling CONFIG_LED_CLASS (SND_HDA_CODEC

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Date:   Wed, 14 Oct 2020 10:17:08 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Pavel Machek <pavel@....cz>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Udo van den Heuvel <udovdh@...all.nl>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-leds@...r.kernel.org, Dan Murphy <dmurphy@...com>,
        moderated for non-subscribers <alsa-devel@...a-project.org>
Subject: Re: disabling CONFIG_LED_CLASS (SND_HDA_CODEC_REALTEK)

On Wed, 14 Oct 2020 10:13:05 +0200,
Pavel Machek wrote:
> 
> On Wed 2020-10-14 10:08:27, Takashi Iwai wrote:
> > On Wed, 14 Oct 2020 09:54:59 +0200,
> > Pavel Machek wrote:
> > > 
> > > Hi!
> > > 
> > > > >>> I.e.: it looks like I will lose some funcionality when I disable
> > > > >>> SND_HDA_CODEC_REALTEK.
> > > > >>
> > > > >> OK. At present you can't have it both ways, i.e., SND_HDA_CODEC_REALTEK
> > > > >> with no LEDS. That driver apparently wants LEDS.
> > > > > 
> > > > > Thanks but why have I gone for years without LEDS?
> > > > > I do not need LEDS, I do not want LEDS, I do not have LEDS (that are
> > > > > visible, usable, etc).
> > > > > 
> > > > > Please make this selectable instead of forcing more bulk into my
> > > >> kernel.
> > > 
> > > LED core is not that big, and this avoided some rather "interesting"
> > > hacks IIRC. If Udo wants more config complexity, lets first make him
> > > measure the benefits, second submit a patch.
> > > 
> > > But I'd suggest to just live with it.
> > > 
> > > And yes, we should probably get rid of "CONFIG_NEW_LEDS" symbol. That
> > > one is actually useless.
> > 
> > IIRC, this was needed for the reverse selection of CONFIG_LEDS_CLASS
> > and co.  But if it's really useless, I'll happily delete it.
> 
> It is needed for now. It is just something we should remove in
> future. CONFIG options are not that cheap...

Ah I see.  Yes, the config itself is superfluous.


thanks,

Takashi