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Message-Id: <20141003212940.188667822@linuxfoundation.org>
Date: Fri, 3 Oct 2014 14:30:08 -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 3.16 222/357] iio: hid_sensor_hub: 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 55a6f9ddfdea0d2d343cd1b39baf8aa752664b6e 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/common/hid-sensors/hid-sensor-trigger.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -122,7 +122,8 @@ int hid_sensor_setup_trigger(struct iio_
dev_err(&indio_dev->dev, "Trigger Register Failed\n");
goto error_free_trig;
}
- indio_dev->trig = attrb->trigger = trig;
+ attrb->trigger = trig;
+ indio_dev->trig = iio_trigger_get(trig);
return ret;
--
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