[PATCH 3.13 074/163] iio: st_sensors: Fix indio_dev->trig assignment

Kamal Mostafa kamal at canonical.com
Thu Oct 9 21:01:39 UTC 2014 -stable review patch.  If anyone has any objections, please let me know.


From: Srinivas Pandruvada <srinivas.pandruvada at linux.intel.com>

commit f0e84acd7056e6d7ade551c6439531606ae30a46 upstream.

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 at linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23 at kernel.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
 drivers/iio/common/st_sensors/st_sensors_trigger.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c
index 8fc3a97..8d8ca6f 100644
--- a/drivers/iio/common/st_sensors/st_sensors_trigger.c
+++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c
@@ -49,7 +49,7 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 		dev_err(&indio_dev->dev, "failed to register iio trigger.\n");
 		goto iio_trigger_register_error;
-	indio_dev->trig = sdata->trig;
+	indio_dev->trig = iio_trigger_get(sdata->trig);
 	return 0;

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