ASoC: pxa: spitz: 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>

sound/soc/pxa/spitz.c

@@ -46,61 +46,66 @@ static int spitz_mic_gpio;
 
 static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
 {
+	snd_soc_dapm_mutex_lock(dapm);
+
 	if (spitz_spk_func == SPITZ_SPK_ON)
-		snd_soc_dapm_enable_pin(dapm, "Ext Spk");
+		snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
 	else
-		snd_soc_dapm_disable_pin(dapm, "Ext Spk");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
 
 	/* set up jack connection */
 	switch (spitz_jack_func) {
 	case SPITZ_HP:
 		/* enable and unmute hp jack, disable mic bias */
-		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
-		snd_soc_dapm_disable_pin(dapm, "Mic Jack");
-		snd_soc_dapm_disable_pin(dapm, "Line Jack");
-		snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
+		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 		gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
 		gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
 		break;
 	case SPITZ_MIC:
 		/* enable mic jack and bias, mute hp */
-		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
-		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
-		snd_soc_dapm_disable_pin(dapm, "Line Jack");
-		snd_soc_dapm_enable_pin(dapm, "Mic Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
+		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 		gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 		break;
 	case SPITZ_LINE:
 		/* enable line jack, disable mic bias and mute hp */
-		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
-		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
-		snd_soc_dapm_disable_pin(dapm, "Mic Jack");
-		snd_soc_dapm_enable_pin(dapm, "Line Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
+		snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 		gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 		break;
 	case SPITZ_HEADSET:
 		/* enable and unmute headset jack enable mic bias, mute L hp */
-		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
-		snd_soc_dapm_enable_pin(dapm, "Mic Jack");
-		snd_soc_dapm_disable_pin(dapm, "Line Jack");
-		snd_soc_dapm_enable_pin(dapm, "Headset Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
+		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
+		snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 		gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
 		break;
 	case SPITZ_HP_OFF:
 
 		/* jack removed, everything off */
-		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
-		snd_soc_dapm_disable_pin(dapm, "Headset Jack");
-		snd_soc_dapm_disable_pin(dapm, "Mic Jack");
-		snd_soc_dapm_disable_pin(dapm, "Line Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
+		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 		gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 		break;
 	}
-	snd_soc_dapm_sync(dapm);
+
+	snd_soc_dapm_sync_unlocked(dapm);
+
+	snd_soc_dapm_mutex_unlock(dapm);
 }
 
 static int spitz_startup(struct snd_pcm_substream *substream)