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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2014-02-18 19:22:17 +0400
committerMark Brown <broonie@linaro.org>2014-02-20 14:22:56 +0400
commite951f267fd042ce6ca66449dd6d537b6126a10d7 (patch)
tree1650199301df70b7845cebde5e629ae37e108e8e /sound/soc/codecs
parent1bf1b8cf4faf279c3643c5c8045bec53b047ca9a (diff)
downloadlinux-e951f267fd042ce6ca66449dd6d537b6126a10d7.tar.xz
ASoC: wm5100: 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@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/codecs')
-rw-r--r--sound/soc/codecs/wm5100.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index 4e3e31aaf509..492fe846ae68 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -2100,6 +2100,7 @@ static void wm5100_micd_irq(struct wm5100_priv *wm5100)
int wm5100_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
{
struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
if (jack) {
wm5100->jack = jack;
@@ -2117,9 +2118,14 @@ int wm5100_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
WM5100_ACCDET_RATE_MASK);
/* We need the charge pump to power MICBIAS */
- snd_soc_dapm_force_enable_pin(&codec->dapm, "CP2");
- snd_soc_dapm_force_enable_pin(&codec->dapm, "SYSCLK");
- snd_soc_dapm_sync(&codec->dapm);
+ snd_soc_dapm_mutex_lock(dapm);
+
+ snd_soc_dapm_force_enable_pin_unlocked(dapm, "CP2");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm, "SYSCLK");
+
+ snd_soc_dapm_sync_unlocked(dapm);
+
+ snd_soc_dapm_mutex_unlock(dapm);
/* We start off just enabling microphone detection - even a
* plain headphone will trigger detection.