diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index fb757af193631d348b140faa72f85b32bf38ebd4..89f2af77b1c3983afaa407e6ff2740ec95e0c068 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -1405,6 +1405,7 @@ static int wm5100_set_bias_level(struct snd_soc_codec *codec,
 
 	case SND_SOC_BIAS_OFF:
 		regcache_cache_only(wm5100->regmap, true);
+		regcache_mark_dirty(wm5100->regmap);
 		if (wm5100->pdata.ldo_ena)
 			gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
 		regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),