This is a note to let you know that I've just added the patch titled
iio: imu: Use iio_trigger_get for indio_dev->trig assignment
to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 4ce7ca89d6e8eae9e201cd0e972ba323f33e2fb4 Mon Sep 17 00:00:00 2001
From: Darshana Padmadas <darshanapadmadas@xxxxxxxxx>
Date: Sat, 28 Mar 2015 12:07:14 +0530
Subject: iio: imu: Use iio_trigger_get for indio_dev->trig assignment
This patch uses iio_trigger_get to increment the reference
count of trigger device, to avoid incorrect assignment.
Can result in a null pointer dereference during removal if the
trigger has been changed before removal.
This patch refers to a similar situation encountered through the
following discussion:
http://www.spinics.net/lists/linux-iio/msg13669.html
Signed-off-by: Darshana Padmadas <darshanapadmadas@xxxxxxxxx>
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
---
drivers/iio/imu/adis_trigger.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/imu/adis_trigger.c b/drivers/iio/imu/adis_trigger.c
index e0017c22bb9c..f53e9a803a0e 100644
--- a/drivers/iio/imu/adis_trigger.c
+++ b/drivers/iio/imu/adis_trigger.c
@@ -60,7 +60,7 @@ int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
iio_trigger_set_drvdata(adis->trig, adis);
ret = iio_trigger_register(adis->trig);
- indio_dev->trig = adis->trig;
+ indio_dev->trig = iio_trigger_get(adis->trig);
if (ret)
goto error_free_irq;
--
2.3.4
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