From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Date: Fri, 22 Aug 2014 20:48:00 +0000 (+0100)
Subject: iio: meter: ade7758: Fix indio_dev->trig assignment
X-Git-Tag: firefly_0821_release~3679^2~1466
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e3675a4bd5f72e2551a4f4dfae7330c8b6c854dd;p=firefly-linux-kernel-4.4.55.git

iio: meter: ade7758: Fix indio_dev->trig assignment

commit 0495081179212b758775df752e657ea71dcae020 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@linux.intel.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/iio/meter/ade7758_trigger.c b/drivers/staging/iio/meter/ade7758_trigger.c
index 7a94ddd42f59..8c4f2896cd0d 100644
--- a/drivers/staging/iio/meter/ade7758_trigger.c
+++ b/drivers/staging/iio/meter/ade7758_trigger.c
@@ -85,7 +85,7 @@ int ade7758_probe_trigger(struct iio_dev *indio_dev)
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
-	indio_dev->trig = st->trig;
+	indio_dev->trig = iio_trigger_get(st->trig);
 	if (ret)
 		goto error_free_irq;