[3.13.y.z extended stable] Patch "iio: inv_mpu6050: Fix indio_dev->trig assignment" has been added to staging queue

Kamal Mostafa kamal at canonical.com
Thu Oct 9 20:51:28 UTC 2014

This is a note to let you know that I have just added a patch titled

    iio: inv_mpu6050: Fix indio_dev->trig assignment

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:


This patch is scheduled to be released in version

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see



>From 94d983ecb7d978134959190abc9879bc25fef8dc Mon Sep 17 00:00:00 2001
From: Srinivas Pandruvada <srinivas.pandruvada at linux.intel.com>
Date: Fri, 22 Aug 2014 21:48:00 +0100
Subject: iio: inv_mpu6050: Fix indio_dev->trig assignment

commit b07e3b3850b2e1f09c19f54d3ed7210d9f529e2c 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/imu/inv_mpu6050/inv_mpu_trigger.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
index 03b9372..926fcce 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
@@ -135,7 +135,7 @@ int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev)
 	ret = iio_trigger_register(st->trig);
 	if (ret)
 		goto error_free_irq;
-	indio_dev->trig = st->trig;
+	indio_dev->trig = iio_trigger_get(st->trig);

 	return 0;


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