iio: accel: bma180: Fix indio_dev->trig assignment

This can result in wrong reference count for trigger device, call
iio_trigger_get to increment reference.
Refer to http://www.spinics.net/lists/linux-iio/msg13669.html for discussion
with Jonathan.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org

diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index a077cc86421b5eb24519ab25a61ebb41105af5e8..19100fddd2edb7e8c11f367ae4061346fcd10089 100644 (file)
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -571,7 +571,7 @@ static int bma180_probe(struct i2c_client *client,
        trig->ops = &bma180_trigger_ops;
        iio_trigger_set_drvdata(trig, indio_dev);
        data->trig = trig;
-       indio_dev->trig = trig;
+       indio_dev->trig = iio_trigger_get(trig);
 
        ret = iio_trigger_register(trig);
        if (ret)