linux-kernel - [PATCH 02/17 v2] ASoC: dapm: Add helpers to lock/unlock DAPM mutex

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Date:	Tue, 18 Feb 2014 15:22:13 +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 02/17 v2] ASoC: dapm: Add helpers to lock/unlock DAPM mutex

Acquiring the DAPM mutex is necessary before using several DAPM
functions and dereference is quite ugly. This patch provides a helper
function to simplify this.

Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---
 include/sound/soc.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 21038e0..dc46623 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1204,4 +1204,15 @@ extern struct dentry *snd_soc_debugfs_root;
 
 extern const struct dev_pm_ops snd_soc_pm_ops;
 
+/* Helper functions */
+static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm)
+{
+	mutex_lock(&dapm->card->dapm_mutex);
+}
+
+static inline void snd_soc_dapm_mutex_unlock(struct snd_soc_dapm_context *dapm)
+{
+	mutex_unlock(&dapm->card->dapm_mutex);
+}
+
 #endif
-- 
1.7.2.5

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