linux-kernel - Re: [PATCH] ASoC: rt5677: add SPI

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Message-ID: <CAK8P3a1it2a1CmkkOfVqhLE33jmKWhHEtria+ESoz6uSkcP8_w@mail.gmail.com>
Date:   Tue, 7 Jan 2020 09:16:31 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Jon Hunter <jonathanh@...dia.com>, Mark Brown <broonie@...nel.org>,
        Ben Zhang <benzh@...omium.org>,
        Curtis Malainey <cujomalainey@...omium.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        KaiChieh Chuang <kaichieh.chuang@...iatek.com>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:TEGRA ARCHITECTURE SUPPORT" <linux-tegra@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC..." 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH] ASoC: rt5677: add SPI_MASTER dependency

On Mon, Jan 6, 2020 at 10:55 PM Pierre-Louis Bossart
<pierre-louis.bossart@...ux.intel.com> wrote:
> On 12/11/19 4:59 AM, Jon Hunter wrote:
> >
> > On 10/12/2019 19:52, Arnd Bergmann wrote:
> >> When CONFIG_SPI is disabled, the newly added code for the DSP
> >> firmware loading fails to link:
> >>
> >> ERROR: "rt5677_spi_hotword_detected" [sound/soc/codecs/snd-soc-rt5677.ko] undefined!
> >> ERROR: "rt5677_spi_write" [sound/soc/codecs/snd-soc-rt5677.ko] undefined!
> >
> > Would it be better if the above functions or the functions that call
> > these are conditional on CONFIG_SND_SOC_RT5677_SPI?
>
> they are already conditional, with a fallback provided:
>
> #if IS_ENABLED(CONFIG_SND_SOC_RT5677_SPI)
> int rt5677_spi_read(u32 addr, void *rxbuf, size_t len);

Right, this fixed the problem.

> in theory if SPI is not enabled the fallback static inlines would always
> be selected?
>
> Arnd, if you can share the .config that exposes this problem it'd be nice

I just tried it again and it seems that the issue was already fixed by
commit fb3194413d1e ("ASoC: rt5677: Fix build error without CONFIG_SPI"),
which had not been merged by the time I created my patch as an
alternative workaround.

      Arnd