Sorry for the trouble.
Looks like these rt5514_spi_* functions should be guarded by #if
IS_ENABLED(CONFIG_SND_SOC_RT5514_SPI)
I'll resend the patch to address this.

Thanks,
Hsin-yu

On Fri, Aug 25, 2017 at 3:41 PM, Stephen Rothwell [off-list ref] wrote:

Hi all,

After merging the sound-asoc tree, today's linux-next build (powerpc
allyesconfig) failed like this:

sound/soc/codecs/rt5514.c: In function 'rt5514_dsp_voice_wake_up_put':
sound/soc/codecs/rt5514.c:343:11: error: implicit declaration of function 'rt5514_spi_burst_write' [-Werror=implicit-function-declaration]
     ret = rt5514_spi_burst_write(0x4ff80000,
           ^

Caused by commit

  d18420b0a0b8 ("ASoC: rt5514: expose Hotword Model control")

I have reverted that commit for today.

--
Cheers,
Stephen Rothwell