2 files changed, 24 insertions, 0 deletions

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 0c4303547fd8..43d98bdb5b5b 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -549,8 +549,25 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_
 {
 	struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component);
 
+	/* Prevent race with interrupt handler */
+	mutex_lock(&cs42l42->jack_detect_mutex);
 	cs42l42->jack = jk;
 
+	if (jk) {
+		switch (cs42l42->hs_type) {
+		case CS42L42_PLUG_CTIA:
+		case CS42L42_PLUG_OMTP:
+			snd_soc_jack_report(jk, SND_JACK_HEADSET, SND_JACK_HEADSET);
+			break;
+		case CS42L42_PLUG_HEADPHONE:
+			snd_soc_jack_report(jk, SND_JACK_HEADPHONE, SND_JACK_HEADPHONE);
+			break;
+		default:
+			break;
+		}
+	}
+	mutex_unlock(&cs42l42->jack_detect_mutex);
+
 	return 0;
 }
 
@@ -1618,6 +1635,8 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
 		CS42L42_M_DETECT_FT_MASK |
 		CS42L42_M_HSBIAS_HIZ_MASK);
 
+	mutex_lock(&cs42l42->jack_detect_mutex);
+
 	/* Check auto-detect status */
 	if ((~masks[5]) & irq_params_table[5].mask) {
 		if (stickies[5] & CS42L42_HSDET_AUTO_DONE_MASK) {
@@ -1686,6 +1705,8 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
 		}
 	}
 
+	mutex_unlock(&cs42l42->jack_detect_mutex);
+
 	return IRQ_HANDLED;
 }
 
@@ -2033,6 +2054,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
 
 	cs42l42->dev = &i2c_client->dev;
 	i2c_set_clientdata(i2c_client, cs42l42);
+	mutex_init(&cs42l42->jack_detect_mutex);
 
 	cs42l42->regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap);
 	if (IS_ERR(cs42l42->regmap)) {
diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h
index 75ade987d0db..9fff183dce8e 100644
--- a/sound/soc/codecs/cs42l42.h
+++ b/sound/soc/codecs/cs42l42.h
@@ -12,6 +12,7 @@
 #ifndef __CS42L42_H__
 #define __CS42L42_H__
 
+#include <linux/mutex.h>
 #include <sound/jack.h>
 
 #define CS42L42_PAGE_REGISTER	0x00	/* Page Select Register */
@@ -841,6 +842,7 @@ struct  cs42l42_private {
 	struct gpio_desc *reset_gpio;
 	struct completion pdn_done;
 	struct snd_soc_jack *jack;
+	struct mutex jack_detect_mutex;
 	int pll_config;
 	int bclk;
 	u32 sclk;