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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>
This commit is contained in:
Charles Keepax 2014-02-18 15:22:17 +00:00 committed by Mark Brown
parent 1bf1b8cf4f
commit e951f267fd
1 changed files with 9 additions and 3 deletions
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12
sound/soc/codecs/wm5100.c
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@ -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.