linux-kernel - Re: [Patch] thinkpad_acpi: fix a build error

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Date:	Fri, 18 Dec 2009 11:15:21 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Xiaotian Feng <xtfeng@...il.com>
Cc:	Amerigo Wang <amwang@...hat.com>, linux-kernel@...r.kernel.org,
	Henrique de Moraes Holschuh <hmh@....eng.br>,
	Corentin Chary <corentincj@...aif.net>,
	ibm-acpi-devel@...ts.sourceforge.net,
	Len Brown <len.brown@...el.com>,
	Alan Jenkins <alan-jenkins@...fmail.co.uk>,
	akpm@...ux-foundation.org, helight.xu@...il.com
Subject: Re: [Patch] thinkpad_acpi: fix a build error

At Fri, 18 Dec 2009 17:42:34 +0800,
Xiaotian Feng wrote:
> 
> Ingo already sent this patch yesterday.
> http://lkml.org/lkml/2009/12/17/25
> 
> 
> On Fri, Dec 18, 2009 at 5:28 PM, Amerigo Wang <amwang@...hat.com> wrote:
> >
> > This patch fixes the following build error:
> >
> >  Building modules, stage 2.
> >  MODPOST 1834 modules
> > ERROR: "snd_card_create" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> > ERROR: "snd_ctl_notify" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> > ERROR: "snd_ctl_boolean_mono_info" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> > ERROR: "snd_ctl_new1" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> > ERROR: "snd_card_free" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> > ERROR: "snd_card_register" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> > ERROR: "snd_ctl_add" [drivers/platform/x86/thinkpad_acpi.ko] undefined!
> >
> > Cc: Len Brown <len.brown@...el.com>
> > Cc: Corentin Chary <corentincj@...aif.net>
> > Cc: Henrique de Moraes Holschuh <hmh@....eng.br>
> > Cc: Alan Jenkins <alan-jenkins@...fmail.co.uk>
> > Reported-by: Helight.Xu <helight.xu@...il.com>
> > Signed-off-by: WANG Cong <amwang@...hat.com>
> > Tested-by: Helight.Xu <helight.xu@...il.com>
> >
> > ---
> > diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
> > index fc5bf9d..596966c 100644
> > --- a/drivers/platform/x86/Kconfig
> > +++ b/drivers/platform/x86/Kconfig
> > @@ -215,6 +215,7 @@ config THINKPAD_ACPI
> >        depends on ACPI
> >        depends on INPUT
> >        depends on RFKILL || RFKILL = n
> > +       depends on SOUND

The patch isn't correct (I guess the upstream fix is same?).

CONFIG_SOUND is a global config for sound subsystem.  The relevant
functions are ALSA core part, which is CONFIG_SND.
So, the fix should be:

	depends on SND

instead.


Takashi
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