linux-kernel - [PATCH 3.14 138/238] iio: gyro: itg3200: Fix indio

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Message-Id: <20141003212918.088806066@linuxfoundation.org>
Date:	Fri,  3 Oct 2014 14:30:53 -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 3.14 138/238] iio: gyro: itg3200: Fix indio_dev->trig assignment

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

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

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

commit 0b4dce2ee694a991ef38203ec5ff91a738518cb3 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/gyro/itg3200_buffer.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/gyro/itg3200_buffer.c
+++ b/drivers/iio/gyro/itg3200_buffer.c
@@ -132,7 +132,7 @@ int itg3200_probe_trigger(struct iio_dev
 		goto error_free_irq;
 
 	/* select default trigger */
-	indio_dev->trig = st->trig;
+	indio_dev->trig = iio_trigger_get(st->trig);
 
 	return 0;
 


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