linux-kernel - [PATCH 3.5 35/90] ASoC: wm8962: Turn on regcache_cache

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Message-Id: <1386264972-5399-36-git-send-email-luis.henriques@canonical.com>
Date:	Thu,  5 Dec 2013 17:35:17 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Nicolin Chen <b42378@...escale.com>,
	Mark Brown <broonie@...aro.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.5 35/90] ASoC: wm8962: Turn on regcache_cache_only before disabling regulator

3.5.7.27 -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: Luis Henriques <luis.henriques@...onical.com>
---
 sound/soc/codecs/wm8962.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index bff98fb..c4afa36 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3687,6 +3687,8 @@ static __devinit int wm8962_i2c_probe(struct i2c_client *i2c,
 	if (ret < 0)
 		goto err_regmap;
 
+	regcache_cache_only(wm8962->regmap, true);
+
 	/* The drivers should power up as needed */
 	regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
 
-- 
1.8.3.2

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