Re: [PATCH] ASoC: improve RT5514 dependencies

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On Mon, Jul 31, 2017 at 11:15 AM, Takashi Iwai <tiwai@xxxxxxx> wrote:
> On Mon, 31 Jul 2017 10:30:55 +0200,
> Arnd Bergmann wrote:
>>
>> With SND_SOC_RT5514_SPI=m and SND_SOC_RT5514=y, we get this link error:
>>
>> sound/soc/codecs/rt5514.o: In function `rt5514_dsp_voice_wake_up_put':
>> rt5514.c:(.text+0x2068): undefined reference to `rt5514_spi_burst_write'
>> rt5514.c:(.text+0x20c8): undefined reference to `rt5514_spi_burst_write'
>>
>> This adds another Kconfig symbol to work around the link error, forcing
>> the main driver to be a loadable module as well if some other driver
>> selects the I2C side to be built-in.
>>
>> Fixes: 2a18483a7fb4 ("ASoC: Intel: Add Kabylake machine driver for RT5514, RT5663 and MAX98927")
>> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
>> ---
>> This can now lead to a configuration with
>> SND_SOC_INTEL_KBL_RT5663_RT5514_MAX98927_MACH=y and SND_SOC_RT5514=m. I
>> don't know if that is a problem or not.
>>
>> An alternative approach would be to flip the dependency between
>> rt5514_spi.ko and rt5514.ko and avoid having the rt5514_spi_burst_write
>> symbol exported.
>
> The current usage of
>   #if defined(CONFIG_SND_SOC_RT5514_SPI)
> in rt5514_dsp_voice_wake_up_put() is already broken.  We need the fix
> in anyway.
>
> IMO, flipping the dependency looks saner to me.  The SPI function call
> is a kind of add-on, after all.

Ok. I'll leave that up to the maintainers of the codec driver then.

        Arnd
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