linux-kernel - Re: [PATCH v3 01/10] ASoC: qcom: make lpass driver depend on OF

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Date:	Fri, 22 May 2015 15:21:49 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	Patrick Lai <plai@...eaurora.org>, Mark Brown <broonie@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Banajit Goswami <bgoswami@...eaurora.org>,
	Kenneth Westfield <kwestfie@...eaurora.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v3 01/10] ASoC: qcom: make lpass driver depend on OF

On Friday 22 May 2015 12:53:44 Srinivas Kandagatla wrote:
> Thanks for looking at this patch.
> 
> On 22/05/15 08:24, Arnd Bergmann wrote:
> > On Thursday 21 May 2015 22:52:41 Srinivas Kandagatla wrote:
> >>
> >>   config SND_SOC_LPASS_CPU
> >>          tristate
> >> +       depends on OF
> >>          select REGMAP_MMIO
> >>
> >>   config SND_SOC_LPASS_PLATFORM
> >>          tristate
> >> +       depends on OF
> >>          select REGMAP_MMIO
> >>
> >>   config SND_SOC_LPASS_IPQ806X
> >>
> >
> > Could you instead make the drivers compile without OF being set?
> >
> > I see that patch 7 and 8 introduces another two options doing
> >
> >
> > +config SND_SOC_LPASS_APQ8016
> > +       tristate
> > +       depends on SND_SOC_QCOM
> > +       select SND_SOC_LPASS_CPU
> > +       select SND_SOC_LPASS_PLATFORM
> > +
> >
> > +config SND_SOC_APQ8016_SBC
> > +       tristate "SoC Audio support for APQ8016 SBC platforms"
> > +       depends on (ARCH_QCOM && SND_SOC_QCOM) || COMPILE_TEST
> > +       select SND_SOC_LPASS_APQ8016
> > +       help
> >
> > so you get an obvious build failure here when SND_SOC_APQ8016_SBC
> > gets selected with COMPILE_TEST on a platform that does not support OF.
> >
> 
> Yes, this would fail.
> I think moving of_device_id structures in drivers under #ifdef CONFIG_OF 
> and removing the depends on OF would fix it.
> 

Why?

	Arnd
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