It is possible to configure a kernel with SND_DAVINCI_SOC=m and SND_DM365_VOICE_CODEC=y, which results in a link error:

sound/built-in.o: In function `davinci_vcif_probe': sound/soc/davinci/davinci-vcif.c:223: undefined reference to `davinci_soc_platform_register'

The best way to avoid this is to make SND_DM365_VOICE_CODEC a tristate option that depends on SND_DAVINCI_SOC, so it can only be a module or disabled when the base driver is a loadable module

Signed-off-by: Arnd Bergmann arnd@arndb.de

diff --git a/sound/soc/davinci/Kconfig b/sound/soc/davinci/Kconfig index d69510c53239..8e948c63f3d9 100644 --- a/sound/soc/davinci/Kconfig +++ b/sound/soc/davinci/Kconfig @@ -63,7 +63,8 @@ config SND_DM365_AIC3X_CODEC Say Y if you want to add support for AIC3101 audio codec

config SND_DM365_VOICE_CODEC - bool "Voice Codec - CQ93VC" + tristate "Voice Codec - CQ93VC" + depends on SND_DAVINCI_SOC select MFD_DAVINCI_VOICECODEC select SND_DAVINCI_SOC_VCIF select SND_SOC_CQ0093VC