linux-kernel - [PATCH 3.16 221/357] iio: accel: bma180: Fix indio

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Message-Id: <20141003212940.159704297@linuxfoundation.org>
Date:	Fri,  3 Oct 2014 14:30:07 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Jonathan Cameron <jic23@...nel.org>
Subject: [PATCH 3.16 221/357] iio: accel: bma180: Fix indio_dev->trig assignment

3.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>

commit 0668a4e4d297328ce08b44d91d160537596115e2 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@...ux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/iio/accel/bma180.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -571,7 +571,7 @@ static int bma180_probe(struct i2c_clien
 	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)


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