From e53e417331c57b9b97e3f8be870214a02c99265c Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Wed, 18 Jan 2012 20:02:38 +0000
Subject: [PATCH] ASoC: Mark WM5100 register map cache only when going into
 BIAS_OFF

Writing to the registers won't work if we do actually manage to hit a fully
powered off state.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
---
 sound/soc/codecs/wm5100.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index 8b24323d6b2c..3fd9cfe6dcd7 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -1402,6 +1402,7 @@ static int wm5100_set_bias_level(struct snd_soc_codec *codec,
 		break;
 
 	case SND_SOC_BIAS_OFF:
+		regcache_cache_only(wm5100->regmap, true);
 		if (wm5100->pdata.ldo_ena)
 			gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
 		regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
-- 
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