[PATCH v2 1/4] staging: iio: ad5933: add SPDX identifier

[Marcelo Schmitt]

Add SPDX identifier of GPL-2.0 for the ad5933 driver.
Organize imports.
Make multi-line comments compliant with the preferred code style.

Signed-off-by: Marcelo Schmitt <marcelo.schmitt1@xxxxxxxxx>
---
 .../staging/iio/impedance-analyzer/ad5933.c   | 30 ++++++++++---------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index 3134295f014f..d75bdfbf93de 100644
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -1,27 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * AD5933 AD5934 Impedance Converter, Network Analyzer
  *
  * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
  */
 
-#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/sysfs.h>
+#include <linux/err.h>
 #include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/regulator/consumer.h>
+#include <linux/sysfs.h>
 #include <linux/types.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/clk.h>
 
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
 #include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
 
 /* AD5933/AD5934 Registers */
 #define AD5933_REG_CONTROL_HB		0x80	/* R/W, 1 byte */
@@ -474,7 +473,8 @@ static IIO_DEVICE_ATTR(out_voltage0_settling_cycles, 0644,
 			ad5933_store,
 			AD5933_OUT_SETTLING_CYCLES);
 
-/* note:
+/*
+ * note:
  * ideally we would handle the scale attributes via the iio_info
  * (read|write)_raw methods, however this part is a untypical since we
  * don't create dedicated sysfs channel attributes for out0 and in0.
@@ -572,7 +572,8 @@ static int ad5933_ring_postenable(struct iio_dev *indio_dev)
 {
 	struct ad5933_state *st = iio_priv(indio_dev);
 
-	/* AD5933_CTRL_INIT_START_FREQ:
+	/*
+	 * AD5933_CTRL_INIT_START_FREQ:
 	 * High Q complex circuits require a long time to reach steady state.
 	 * To facilitate the measurement of such impedances, this mode allows
 	 * the user full control of the settling time requirement before
@@ -663,7 +664,8 @@ static void ad5933_work(struct work_struct *work)
 	}
 
 	if (status & AD5933_STAT_SWEEP_DONE) {
-		/* last sample received - power down do
+		/*
+		 * last sample received - power down do
 		 * nothing until the ring enable is toggled
 		 */
 		ad5933_cmd(st, AD5933_CTRL_POWER_DOWN);
-- 
2.20.1