sound/soc/soc-dapm.c:1023:4: error: implicit declaration of function 'regulator_allow_bypass'

Hi Mark,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
head:   e8bb382aa74747f23e2903c15e48e9f06de5c60a
commit: 9ad4ba77112a3700129cdb142796a54680baa266 [100/103] ASoC: dapm: Allow regulators to bypass as well as disable when idle
config: x86_64-allmodconfig (attached as .config)

All related error/warning messages:

sound/soc/soc-dapm.c: In function 'dapm_regulator_event':
sound/soc/soc-dapm.c:1023:4: error: implicit declaration of function 'regulator_allow_bypass' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors

vim +1023 sound/soc/soc-dapm.c
1018 {
1019 int ret;
1020
1021 if (SND_SOC_DAPM_EVENT_ON(event)) {
1022 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {

Quoted 1 line

1023 ret = regulator_allow_bypass(w->regulator, true);

1024 if (ret != 0)
1025 dev_warn(w->dapm->dev,
1026 "Failed to bypass %s: %d\n",
1027 w->name, ret);
1028 }

---
0-DAY kernel build testing backend Open Source Technology Centre
Fengguang Wu <[email protected]> Intel Corporation