From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> SND_SOC_J721E_EVM should not select SND_SOC_PCM3168A_I2C when I2C is not enabled. That causes build errors, so make this driver's symbol depend on I2C. WARNING: unmet direct dependencies detected for SND_SOC_PCM3168A_I2C Depends on [n]: SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && I2C [=n] Selected by [m]: - SND_SOC_J721E_EVM [=m] && SOUND [=m] && !UML && SND [=m] && SND_SOC [=m] && (DMA_OMAP [=y] || TI_EDMA [=m] || TI_K3_UDMA [=n] || COMPILE_TEST [=y]) && (ARCH_K3_J721E_SOC [=n] || COMPILE_TEST [=y]) ../sound/soc/codecs/pcm3168a-i2c.c:59:1: warning: data definition has no type or storage class module_i2c_driver(pcm3168a_i2c_driver); ^~~~~~~~~~~~~~~~~ ../sound/soc/codecs/pcm3168a-i2c.c:59:1: error: type defaults to ‘int’ in declaration of ‘module_i2c_driver’ [-Werror=implicit-int] ../sound/soc/codecs/pcm3168a-i2c.c:59:1: warning: parameter names (without types) in function declaration ../sound/soc/codecs/pcm3168a-i2c.c:49:26: warning: ‘pcm3168a_i2c_driver’ defined but not used [-Wunused-variable] static struct i2c_driver pcm3168a_i2c_driver = { ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors Fixes: 6748d0559059 ("ASoC: ti: Add custom machine driver for j721e EVM (CPB and IVI)") Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Peter Ujfalusi <peter.ujfalusi@xxxxxx> Cc: Mark Brown <broonie@xxxxxxxxxx> --- sound/soc/ti/Kconfig | 1 + 1 file changed, 1 insertion(+) --- linux-next-20200720.orig/sound/soc/ti/Kconfig +++ linux-next-20200720/sound/soc/ti/Kconfig @@ -222,6 +222,7 @@ config SND_SOC_DM365_VOICE_CODEC_MODULE config SND_SOC_J721E_EVM tristate "SoC Audio support for j721e EVM" depends on ARCH_K3_J721E_SOC || COMPILE_TEST + depends on I2C select SND_SOC_PCM3168A_I2C select SND_SOC_DAVINCI_MCASP help