1 files changed, 25 insertions, 29 deletions

diff --git a/drivers/input/keyboard/lm8323.c b/drivers/input/keyboard/lm8323.c
index 7bee93e9b0f5..e19442c6f80f 100644
--- a/drivers/input/keyboard/lm8323.c
+++ b/drivers/input/keyboard/lm8323.c
@@ -21,6 +21,7 @@
 #include <linux/platform_data/lm8323.h>
 #include <linux/pm.h>
 #include <linux/slab.h>
+#include <linux/string_choices.h>
 
 /* Commands to send to the chip. */
 #define LM8323_CMD_READ_ID		0x80 /* Read chip ID. */
@@ -269,7 +270,7 @@ static void process_keys(struct lm8323_chip *lm)
 		unsigned short keycode = lm->keymap[key];
 
 		dev_vdbg(&lm->client->dev, "key 0x%02x %s\n",
-			 key, isdown ? "down" : "up");
+			 key, str_down_up(isdown));
 
 		if (lm->kp_enabled) {
 			input_event(lm->idev, EV_MSC, MSC_SCAN, key);
@@ -350,11 +351,11 @@ static int lm8323_configure(struct lm8323_chip *lm)
 
 static void pwm_done(struct lm8323_pwm *pwm)
 {
-	mutex_lock(&pwm->lock);
+	guard(mutex)(&pwm->lock);
+
 	pwm->running = false;
 	if (pwm->desired_brightness != pwm->brightness)
 		schedule_work(&pwm->work);
-	mutex_unlock(&pwm->lock);
 }
 
 /*
@@ -367,7 +368,7 @@ static irqreturn_t lm8323_irq(int irq, void *_lm)
 	u8 ints;
 	int i;
 
-	mutex_lock(&lm->lock);
+	guard(mutex)(&lm->lock);
 
 	while ((lm8323_read(lm, LM8323_CMD_READ_INT, &ints, 1) == 1) && ints) {
 		if (likely(ints & INT_KEYPAD))
@@ -394,8 +395,6 @@ static irqreturn_t lm8323_irq(int irq, void *_lm)
 		}
 	}
 
-	mutex_unlock(&lm->lock);
-
 	return IRQ_HANDLED;
 }
 
@@ -445,7 +444,7 @@ static void lm8323_pwm_work(struct work_struct *work)
 	u16 pwm_cmds[3];
 	int num_cmds = 0;
 
-	mutex_lock(&pwm->lock);
+	guard(mutex)(&pwm->lock);
 
 	/*
 	 * Do nothing if we're already at the requested level,
@@ -454,7 +453,7 @@ static void lm8323_pwm_work(struct work_struct *work)
 	 * finishes.
 	 */
 	if (pwm->running || pwm->desired_brightness == pwm->brightness)
-		goto out;
+		return;
 
 	kill = (pwm->desired_brightness == 0);
 	up = (pwm->desired_brightness > pwm->brightness);
@@ -489,9 +488,6 @@ static void lm8323_pwm_work(struct work_struct *work)
 
 	lm8323_write_pwm(pwm, kill, num_cmds, pwm_cmds);
 	pwm->brightness = pwm->desired_brightness;
-
- out:
-	mutex_unlock(&pwm->lock);
 }
 
 static void lm8323_pwm_set_brightness(struct led_classdev *led_cdev,
@@ -500,9 +496,9 @@ static void lm8323_pwm_set_brightness(struct led_classdev *led_cdev,
 	struct lm8323_pwm *pwm = cdev_to_pwm(led_cdev);
 	struct lm8323_chip *lm = pwm->chip;
 
-	mutex_lock(&pwm->lock);
-	pwm->desired_brightness = brightness;
-	mutex_unlock(&pwm->lock);
+	scoped_guard(mutex, &pwm->lock) {
+		pwm->desired_brightness = brightness;
+	}
 
 	if (in_interrupt()) {
 		schedule_work(&pwm->work);
@@ -510,12 +506,12 @@ static void lm8323_pwm_set_brightness(struct led_classdev *led_cdev,
 		/*
 		 * Schedule PWM work as usual unless we are going into suspend
 		 */
-		mutex_lock(&lm->lock);
-		if (likely(!lm->pm_suspend))
-			schedule_work(&pwm->work);
-		else
-			lm8323_pwm_work(&pwm->work);
-		mutex_unlock(&lm->lock);
+		scoped_guard(mutex, &lm->lock) {
+			if (likely(!lm->pm_suspend))
+				schedule_work(&pwm->work);
+			else
+				lm8323_pwm_work(&pwm->work);
+		}
 	}
 }
 
@@ -608,9 +604,9 @@ static ssize_t lm8323_set_disable(struct device *dev,
 	if (ret)
 		return ret;
 
-	mutex_lock(&lm->lock);
+	guard(mutex)(&lm->lock);
+
 	lm->kp_enabled = !i;
-	mutex_unlock(&lm->lock);
 
 	return count;
 }
@@ -758,9 +754,9 @@ static int lm8323_suspend(struct device *dev)
 	irq_set_irq_wake(client->irq, 0);
 	disable_irq(client->irq);
 
-	mutex_lock(&lm->lock);
-	lm->pm_suspend = true;
-	mutex_unlock(&lm->lock);
+	scoped_guard(mutex, &lm->lock) {
+		lm->pm_suspend = true;
+	}
 
 	for (i = 0; i < 3; i++)
 		if (lm->pwm[i].enabled)
@@ -775,9 +771,9 @@ static int lm8323_resume(struct device *dev)
 	struct lm8323_chip *lm = i2c_get_clientdata(client);
 	int i;
 
-	mutex_lock(&lm->lock);
-	lm->pm_suspend = false;
-	mutex_unlock(&lm->lock);
+	scoped_guard(mutex, &lm->lock) {
+		lm->pm_suspend = false;
+	}
 
 	for (i = 0; i < 3; i++)
 		if (lm->pwm[i].enabled)
@@ -792,7 +788,7 @@ static int lm8323_resume(struct device *dev)
 static DEFINE_SIMPLE_DEV_PM_OPS(lm8323_pm_ops, lm8323_suspend, lm8323_resume);
 
 static const struct i2c_device_id lm8323_id[] = {
-	{ "lm8323", 0 },
+	{ "lm8323" },
 	{ }
 };