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 20a7073f1dd6..11b048a59fde 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 38cf5c3f5631..ad81b512aa3d 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 9139958da787..4ed78b94afd8 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 b87e382ad768..75d2d1bf93d1 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 afdcd1ff08ff..1c4277dbd318 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 bbd89fa51188..bbd89fa51188 100644
--- a/drivers/staging/iio/adc/ad7291.h
+++ b/include/linux/platform_data/ad7291.h