ASoC: wm8962: 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>

1 files changed, 9 insertions, 4 deletions

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 97db3b45b411..9e6233633c44 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3089,6 +3089,7 @@ static irqreturn_t wm8962_irq(int irq, void *data)
 int wm8962_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
 {
         struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
+        struct snd_soc_dapm_context *dapm = &codec->dapm;
         int irq_mask, enable;
 
         wm8962->jack = jack;
@@ -3109,14 +3110,18 @@ int wm8962_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
         snd_soc_jack_report(wm8962->jack, 0,
                             SND_JACK_MICROPHONE | SND_JACK_BTN_0);
 
+        snd_soc_dapm_mutex_lock(dapm);
+
         if (jack) {
-                snd_soc_dapm_force_enable_pin(&codec->dapm, "SYSCLK");
-                snd_soc_dapm_force_enable_pin(&codec->dapm, "MICBIAS");
+                snd_soc_dapm_force_enable_pin_unlocked(dapm, "SYSCLK");
+                snd_soc_dapm_force_enable_pin_unlocked(dapm, "MICBIAS");
         } else {
-                snd_soc_dapm_disable_pin(&codec->dapm, "SYSCLK");
-                snd_soc_dapm_disable_pin(&codec->dapm, "MICBIAS");
+                snd_soc_dapm_disable_pin_unlocked(dapm, "SYSCLK");
+                snd_soc_dapm_disable_pin_unlocked(dapm, "MICBIAS");
         }
 
+        snd_soc_dapm_mutex_unlock(dapm);
+
         return 0;
 }
 EXPORT_SYMBOL_GPL(wm8962_mic_detect);