linux-kernel - Re: [PATCH] ASoC: atmel: fix atmel_ssc_set

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Date:   Tue, 1 Oct 2019 17:59:13 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>,
        Mark Brown <broonie@...nel.org>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: atmel: fix atmel_ssc_set_audio link failure

On Tue, Oct 1, 2019 at 4:27 PM Alexandre Belloni
<alexandre.belloni@...tlin.com> wrote:

> > -obj-$(CONFIG_SND_ATMEL_SOC_PDC) += snd-soc-atmel-pcm-pdc.o
> > -obj-$(CONFIG_SND_ATMEL_SOC_DMA) += snd-soc-atmel-pcm-dma.o
> > +# pdc and dma need to both be built-in if any user of
> > +# ssc is built-in.
> > +ifdef CONFIG_SND_ATMEL_SOC_PDC
> > +obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel-pcm-pdc.o
> > +endif
> > +ifdef CONFIG_SND_ATMEL_SOC_DMA
> > +obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel-pcm-dma.o
> > +endif
>
> Doesn't that prevent them to be built as a module at all?
> I'm not sure there is a use case though.

It should not: the idea was that snd-soc-atmel-pcm-{pdc,dma}.o
get built as modules if CONFIG_SND_ATMEL_SOC_SSC=m.

      arnd