linux-kernel - Re: [PATCH] ASoC: pxa: don't select SSP for COMPILE

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Message-ID: <20170807114837.3bqsroayi3sipf4h@sirena.org.uk>
Date:   Mon, 7 Aug 2017 12:48:37 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        alsa-devel@...a-project.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: pxa: don't select SSP for COMPILE_TESTing

On Mon, Aug 07, 2017 at 01:36:09PM +0200, Arnd Bergmann wrote:
> On Mon, Aug 7, 2017 at 1:20 PM, Mark Brown <broonie@...nel.org> wrote:
> > On Mon, Aug 07, 2017 at 12:40:44PM +0200, Arnd Bergmann wrote:
> >> When the audio driver selects CONFIG_PXA_SSP to be a loadable
> >> module on a platform other than PXA, and the PXA SPI driver
> >> is built-in, we get a link error in the SPI driver:

> > Why doesn't this cause problems on PXA?

> On PXA, we 'make' descends into arch/arm/plat-pxa/, where ssp.o
> is located. On other ARM platforms (I guess except for MMP),
> PLAT_PXA is not set, and on non-ARM architectures, we can't
> get there anyway.

Still missing a few steps of reasoning here...

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