staging:iio:adc:ad7291: fix mask bit generation

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/adc/ad7291.c b/drivers/staging/iio/adc/ad7291.c
index 9d1af0e..d125af0 100644 (file)
--- a/drivers/staging/iio/adc/ad7291.c
+++ b/drivers/staging/iio/adc/ad7291.c
@@ -418,7 +418,7 @@ static int ad7291_write_event_config(struct iio_dev *indio_dev,
                                ~(1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code));
                else if (state && (!(chip->c_mask &
                                (1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code)))))
-                       chip->c_mask &=
+                       chip->c_mask |=
                                (1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code));
                else
                        break;