[PATCH 4.9 57/66] iio: adc: palmas_gpadc: retrieve a valid iio_dev in suspend/resume

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4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alison Schofield <amsfield22@xxxxxxxxx>

commit d1aaf20ee655888c227d5137b7a63551f8d15416 upstream.

The suspend/resume functions were using dev_to_iio_dev() to get
the iio_dev. That only works on IIO dev's.  Use dev_get_drvdata()
for a platform device to get the correct iio_dev.

Signed-off-by: Alison Schofield <amsfield22@xxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/iio/adc/palmas_gpadc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/iio/adc/palmas_gpadc.c
+++ b/drivers/iio/adc/palmas_gpadc.c
@@ -775,7 +775,7 @@ static int palmas_adc_wakeup_reset(struc
 
 static int palmas_gpadc_suspend(struct device *dev)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct palmas_gpadc *adc = iio_priv(indio_dev);
 	int wakeup = adc->wakeup1_enable || adc->wakeup2_enable;
 	int ret;
@@ -798,7 +798,7 @@ static int palmas_gpadc_suspend(struct d
 
 static int palmas_gpadc_resume(struct device *dev)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct palmas_gpadc *adc = iio_priv(indio_dev);
 	int wakeup = adc->wakeup1_enable || adc->wakeup2_enable;
 	int ret;


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