--- zzzz-none-000/linux-3.10.107/drivers/iio/magnetometer/st_magn_buffer.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/iio/magnetometer/st_magn_buffer.c	2021-02-04 17:41:59.000000000 +0000
@@ -23,18 +23,16 @@
 #include <linux/iio/common/st_sensors.h>
 #include "st_magn.h"
 
-static int st_magn_buffer_preenable(struct iio_dev *indio_dev)
+int st_magn_trig_set_state(struct iio_trigger *trig, bool state)
 {
-	int err;
-
-	err = st_sensors_set_enable(indio_dev, true);
-	if (err < 0)
-		goto st_magn_set_enable_error;
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 
-	err = iio_sw_buffer_preenable(indio_dev);
+	return st_sensors_set_dataready_irq(indio_dev, state);
+}
 
-st_magn_set_enable_error:
-	return err;
+static int st_magn_buffer_preenable(struct iio_dev *indio_dev)
+{
+	return st_sensors_set_enable(indio_dev, true);
 }
 
 static int st_magn_buffer_postenable(struct iio_dev *indio_dev)