From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Wed, 18 Jan 2012 20:02:38 +0000 (+0000)
Subject: ASoC: Mark WM5100 register map cache only when going into BIAS_OFF
X-Git-Tag: v3.2.3~77
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=11a17e56ac9c607c6eaecf64b618cd17c828ade0;p=karo-tx-linux.git

ASoC: Mark WM5100 register map cache only when going into BIAS_OFF

commit e53e417331c57b9b97e3f8be870214a02c99265c upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index 42d9039a49e9..19c26d222547 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -1404,6 +1404,7 @@ 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),