linux-kernel - Re: [alsa-devel] [RFC PATCH 15/15] ACPI/thinkpad: Fix wrong <acpi/acpi.h> inclusion in Thinkpad ACPI users.

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Date:	Wed, 18 Dec 2013 14:06:15 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Lv Zheng <lv.zheng@...el.com>, Len Brown <len.brown@...el.com>,
	alsa-devel@...a-project.org, ibm-acpi-devel@...ts.sourceforge.net,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Henrique de Moraes Holschuh <ibm-acpi@....eng.br>,
	linux-kernel@...r.kernel.org, Lv Zheng <zetalog@...il.com>,
	linux-acpi@...r.kernel.org, platform-driver-x86@...r.kernel.org
Subject: Re: [alsa-devel] [RFC PATCH 15/15] ACPI/thinkpad: Fix wrong <acpi/acpi.h> inclusion in Thinkpad ACPI users.

At Wed, 18 Dec 2013 09:41:17 -0200,
Henrique de Moraes Holschuh wrote:
> 
> On Wed, 18 Dec 2013, Lv Zheng wrote:
> > CONFIG_ACPI dependent code should include <linux/acpi.h> instead of
> > directly including <acpi/acpi.h>.  This patch cleans up such wrong
> > inclusions for Thinkpad ACPI users.
> 
> ...
> 
> >  drivers/platform/x86/thinkpad_acpi.c |    1 -
> >  include/linux/thinkpad_acpi.h        |    2 ++
> >  sound/pci/hda/patch_conexant.c       |    1 -
> >  sound/pci/hda/patch_realtek.c        |    1 -
> 
> I'd prefer if you left the include outside of thinkpad_acpi.h, and just fix
> the include in the two ALSA users.

Agreed.

> We might add some extra stuff to thinkpad_acpi.h someday, and not everything
> thinkpad_acpi does that might be useful to export to other areas of the
> kernel would require acpi.h.
> 
> Looking at patch_conexant and patch_realtek, it might be better to actually
> move the "am I running on a thinkpad" stuff they use acpi.h for into
> thinkpad_acpi, and provide a prototype for that in thinkpad_acpi.h.

True, but we don't want to bind with thinkpad_acpi before identified
that it's a thinkpad, so the code needs to be in hd-audio codec
driver.


thanks,

Takashi
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