linux-kernel - [PATCH 03/15] ASoC: adav80x: Update locking around use of DAPM pin API

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Date:	Mon, 17 Feb 2014 16:51:31 +0000
From:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:	broonie@...nel.org
Cc:	myungjoo.ham@...sung.com, cw00.choi@...sung.com,
	dmitry.torokhov@...il.com, lgirdwood@...il.com, lars@...afoo.de,
	peter.ujfalusi@...com, jarkko.nikula@...mer.com,
	eric.y.miao@...il.com, haojian.zhuang@...il.com,
	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com,
	alsa-devel@...a-project.org, linux@....linux.org.uk
Subject: [PATCH 03/15] ASoC: adav80x: Update locking around use of DAPM pin API

The pin updates in this driver look like they are intended to be done
atomically, update to do so.

Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---
 sound/soc/codecs/adav80x.c |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/adav80x.c b/sound/soc/codecs/adav80x.c
index f78b27a..aacb2c03 100644
--- a/sound/soc/codecs/adav80x.c
+++ b/sound/soc/codecs/adav80x.c
@@ -600,15 +600,21 @@ static int adav80x_set_sysclk(struct snd_soc_codec *codec,
 			adav80x->sysclk_pd[clk_id] = false;
 		}
 
+		mutex_lock(&codec->dapm.card->dapm_mutex);
+
 		if (adav80x->sysclk_pd[0])
-			snd_soc_dapm_disable_pin(&codec->dapm, "PLL1");
+			snd_soc_dapm_disable_pin_locked(&codec->dapm, "PLL1");
 		else
-			snd_soc_dapm_force_enable_pin(&codec->dapm, "PLL1");
+			snd_soc_dapm_force_enable_pin_locked(&codec->dapm,
+							     "PLL1");
 
 		if (adav80x->sysclk_pd[1] || adav80x->sysclk_pd[2])
-			snd_soc_dapm_disable_pin(&codec->dapm, "PLL2");
+			snd_soc_dapm_disable_pin_locked(&codec->dapm, "PLL2");
 		else
-			snd_soc_dapm_force_enable_pin(&codec->dapm, "PLL2");
+			snd_soc_dapm_force_enable_pin_locked(&codec->dapm,
+							     "PLL2");
+
+		mutex_unlock(&codec->dapm.card->dapm_mutex);
 
 		snd_soc_dapm_sync(&codec->dapm);
 	}
-- 
1.7.2.5

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