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

Kamal Mostafa kamal at canonical.com
Thu Oct 9 20:51:27 UTC 2014

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

    iio: adc: ad_sigma_delta: 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 8d766ce92419b38c37c26a08625f0f05d6b69d8c 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: adc: ad_sigma_delta: Fix indio_dev->trig assignment

commit 9e5846be33277802c0c76e5c12825d0e4d27f639 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>
Acked-by: Lars-Peter Clausen <lars at metafoo.de>
Signed-off-by: Jonathan Cameron <jic23 at kernel.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
 drivers/iio/adc/ad_sigma_delta.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index 9a4e0e3..eb799a4 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -472,7 +472,7 @@ static int ad_sd_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_irq;

 	/* select default trigger */
-	indio_dev->trig = sigma_delta->trig;
+	indio_dev->trig = iio_trigger_get(sigma_delta->trig);

 	return 0;


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