staging:iio:ad7291: Move out of staging

The ad7291 driver is in a reasonable shape. It does not use non-standard API/ABI
and there are no major style issues with the driver. So this patch moves it out
of staging.

There is one small warning from checkpatch which is also fixed in this patch.
The patch also sorts the #include directives in alphabetical order.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

6 files changed, 18 insertions, 14 deletions

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 20a7073..11b048a 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -20,6 +20,16 @@ config AD7266
 	  Say yes here to build support for Analog Devices AD7265 and AD7266
 	  ADCs.
 
+config AD7291
+	tristate "Analog Devices AD7291 ADC driver"
+	depends on I2C
+	help
+	  Say yes here to build support for Analog Devices AD7291
+	  8 Channel ADC with temperature sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7291.
+
 config AD7298
 	tristate "Analog Devices AD7298 ADC driver"
 	depends on SPI
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index 38cf5c3..ad81b51 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -5,6 +5,7 @@
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o
 obj-$(CONFIG_AD7266) += ad7266.o
+obj-$(CONFIG_AD7291) += ad7291.o
 obj-$(CONFIG_AD7298) += ad7298.o
 obj-$(CONFIG_AD7923) += ad7923.o
 obj-$(CONFIG_AD7476) += ad7476.o
diff --git a/drivers/staging/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
index 9139958..4ed78b9 100644
--- a/drivers/staging/iio/adc/ad7291.c
+++ b/drivers/iio/adc/ad7291.c
@@ -6,22 +6,22 @@
  * Licensed under the GPL-2 or later.
  */
 
-#include <linux/interrupt.h>
 #include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.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/mutex.h>
 #include <linux/regulator/consumer.h>
-#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
 
-#include "ad7291.h"
+#include <linux/platform_data/ad7291.h>
 
 /*
  * Simplified handling
@@ -379,6 +379,7 @@ static int ad7291_read_raw(struct iio_dev *indio_dev,
 		case IIO_VOLTAGE:
 			if (chip->reg) {
 				int vref;
+
 				vref = regulator_get_voltage(chip->reg);
 				if (vref < 0)
 					return vref;
diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index b87e382..75d2d1b 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -3,13 +3,6 @@
 #
 menu "Analog to digital converters"
 
-config AD7291
-	tristate "Analog Devices AD7291 ADC driver"
-	depends on I2C
-	help
-	  Say yes here to build support for Analog Devices AD7291
-	  8 Channel ADC with temperature sensor.
-
 config AD7606
 	tristate "Analog Devices AD7606 ADC driver"
 	depends on GPIOLIB
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index afdcd1f..1c4277d 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -8,7 +8,6 @@ ad7606-$(CONFIG_AD7606_IFACE_PARALLEL) += ad7606_par.o
 ad7606-$(CONFIG_AD7606_IFACE_SPI) += ad7606_spi.o
 obj-$(CONFIG_AD7606) += ad7606.o
 
-obj-$(CONFIG_AD7291) += ad7291.o
 obj-$(CONFIG_AD7780) += ad7780.o
 obj-$(CONFIG_AD7816) += ad7816.o
 obj-$(CONFIG_AD7192) += ad7192.o
diff --git a/drivers/staging/iio/adc/ad7291.h b/include/linux/platform_data/ad7291.h
index bbd89fa..bbd89fa 100644
--- a/drivers/staging/iio/adc/ad7291.h
+++ b/include/linux/platform_data/ad7291.h