ASoC: rt711: mutex between calibration and power state changes

To avoid calibration time-out, this patch adds the mutex between calibration and power state changes
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20201217085651.24580-1-shumingf@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt711.c

@@ -462,6 +462,8 @@ static int rt711_set_amp_gain_put(struct snd_kcontrol *kcontrol,
 	unsigned int read_ll, read_rl;
 	int i;
 
+	mutex_lock(&rt711->calibrate_mutex);
+
 	/* Can't use update bit function, so read the original value first */
 	addr_h = mc->reg;
 	addr_l = mc->rreg;
@@ -547,6 +549,8 @@ static int rt711_set_amp_gain_put(struct snd_kcontrol *kcontrol,
 	if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
 		regmap_write(rt711->regmap,
 				RT711_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
+
+	mutex_unlock(&rt711->calibrate_mutex);
 	return 0;
 }
 
@@ -859,9 +863,11 @@ static int rt711_set_bias_level(struct snd_soc_component *component,
 		break;
 
 	case SND_SOC_BIAS_STANDBY:
+		mutex_lock(&rt711->calibrate_mutex);
 		regmap_write(rt711->regmap,
 			RT711_SET_AUDIO_POWER_STATE,
 			AC_PWRST_D3);
+		mutex_unlock(&rt711->calibrate_mutex);
 		break;
 
 	default: