linux-kernel - [PATCH 3.12 021/212] ASoC: wm8962: Turn on regcache_cache

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Message-Id: <20131202191251.054658871@linuxfoundation.org>
Date:	Mon,  2 Dec 2013 11:13:32 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Nicolin Chen <b42378@...escale.com>,
	Mark Brown <broonie@...aro.org>
Subject: [PATCH 3.12 021/212] ASoC: wm8962: Turn on regcache_cache_only before disabling regulator

3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nicolin Chen <b42378@...escale.com>

commit 50bfcf2df2fadf77e143d6099150e6fa7ef4d78c upstream.

It's safer to turn on regcache_cache_only before disabling regulator since
the driver will turn off the regcache_cache_only after enabling regulator.

If we remain cache_only false, some command like 'amixer cset' would get
failure if being run before wm8962_resume().

Signed-off-by: Nicolin Chen <b42378@...escale.com>
Signed-off-by: Mark Brown <broonie@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/soc/codecs/wm8962.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3722,6 +3722,8 @@ static int wm8962_i2c_probe(struct i2c_c
 	if (ret < 0)
 		goto err_enable;
 
+	regcache_cache_only(wm8962->regmap, true);
+
 	/* The drivers should power up as needed */
 	regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
 


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