[PATCH 1/4] iio: accel: bmc150: convert to guard(mutex)

[Rajveer Chaudhari <rajveer.chaudhari.linux@gmail.com>]

Replace manual mutex_lock/mutex_unlock pair with guard(mutex) in
bmc150_accel_buffer_predisable(). This ensures the mutex is
released on all return paths and allows returning directly
without a goto label.

Aligned headers in alphabatical order.

Signed-off-by: Rajveer Chaudhari <rajveer.chaudhari.linux@gmail.com>
---
 drivers/iio/accel/bmc150-accel-core.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index 42ccf0316ce5..9ae325cdfdd3 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -4,23 +4,26 @@
  * Copyright (c) 2014, Intel Corporation.
  */
 
-#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/cleanup.h>
+#include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
+#include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/property.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
 #include <linux/iio/buffer.h>
 #include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
-#include <linux/regmap.h>
+
 #include <linux/regulator/consumer.h>
 
 #include "bmc150-accel.h"
@@ -1485,7 +1488,7 @@ static int bmc150_accel_buffer_postenable(struct iio_dev *indio_dev)
 	if (iio_device_get_current_mode(indio_dev) == INDIO_BUFFER_TRIGGERED)
 		return 0;
 
-	mutex_lock(&data->mutex);
+	guard(mutex)(&data->mutex);
 
 	if (!data->watermark)
 		goto out;
@@ -1517,19 +1520,16 @@ static int bmc150_accel_buffer_predisable(struct iio_dev *indio_dev)
 	if (iio_device_get_current_mode(indio_dev) == INDIO_BUFFER_TRIGGERED)
 		return 0;
 
-	mutex_lock(&data->mutex);
+	guard(mutex)(&data->mutex);
 
 	if (!data->fifo_mode)
-		goto out;
+		return 0;
 
 	bmc150_accel_set_interrupt(data, BMC150_ACCEL_INT_WATERMARK, false);
 	__bmc150_accel_fifo_flush(indio_dev, BMC150_ACCEL_FIFO_LENGTH, false);
 	data->fifo_mode = 0;
 	bmc150_accel_fifo_set_mode(data);
 
-out:
-	mutex_unlock(&data->mutex);
-
 	return 0;
 }
 
-- 
2.53.0