staging:iio:max1363 take advantage of new iio_device_allocate private data.

The only fiddly bit in here was ensuring the regulator was available until after
the free had occured.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/adc/max1363.h

@@ -174,7 +174,6 @@ struct max1363_chip_info {
 
 /**
  * struct max1363_state - driver instance specific data
- * @indio_dev:		the industrial I/O device
  * @client:		i2c_client
  * @setupbyte:		cache of current device setup byte
  * @configbyte:		cache of current device config byte
@@ -194,7 +193,6 @@ struct max1363_chip_info {
  * @thresh_work:	bh work structure for event handling
  */
 struct max1363_state {
-	struct iio_dev			*indio_dev;
 	struct i2c_client		*client;
 	u8				setupbyte;
 	u8				configbyte;

drivers/staging/iio/adc/max1363_ring.c

@@ -27,10 +27,9 @@
 
 #include "max1363.h"
 
-/* Todo: test this */
 int max1363_single_channel_from_ring(long mask, struct max1363_state *st)
 {
-	struct iio_ring_buffer *ring = st->indio_dev->ring;
+	struct iio_ring_buffer *ring = iio_priv_to_dev(st)->ring;
 	int count = 0, ret;
 	u8 *ring_data;
 	if (!(st->current_mode->modemask & mask)) {
@@ -74,7 +73,7 @@ int max1363_single_channel_from_ring(long mask, struct max1363_state *st)
  **/
 static int max1363_ring_preenable(struct iio_dev *indio_dev)
 {
-	struct max1363_state *st = indio_dev->dev_data;
+	struct max1363_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	size_t d_size = 0;
 	unsigned long numvals;
@@ -116,7 +115,7 @@ static int max1363_ring_preenable(struct iio_dev *indio_dev)
  **/
 static void max1363_poll_func_th(struct iio_dev *indio_dev, s64 time)
 {
-	struct max1363_state *st = indio_dev->dev_data;
+	struct max1363_state *st = iio_priv(indio_dev);
 
 	schedule_work(&st->poll_work);
 
@@ -135,7 +134,7 @@ static void max1363_poll_bh_to_ring(struct work_struct *work_s)
 {
 	struct max1363_state *st = container_of(work_s, struct max1363_state,
 						  poll_work);
-	struct iio_dev *indio_dev = st->indio_dev;
+	struct iio_dev *indio_dev = iio_priv_to_dev(st);
 	struct iio_sw_ring_buffer *sw_ring = iio_to_sw_ring(indio_dev->ring);
 	s64 time_ns;
 	__u8 *rxbuf;
@@ -185,7 +184,7 @@ static void max1363_poll_bh_to_ring(struct work_struct *work_s)
 
 int max1363_register_ring_funcs_and_init(struct iio_dev *indio_dev)
 {
-	struct max1363_state *st = indio_dev->dev_data;
+	struct max1363_state *st = iio_priv(indio_dev);
 	int ret = 0;
 
 	indio_dev->ring = iio_sw_rb_allocate(indio_dev);