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Commit 240fb391 authored by Dmitry Rokosov's avatar Dmitry Rokosov Committed by Greg Kroah-Hartman
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iio:accel:kxcjk-1013: rearrange iio trigger get and register



commit ed302925 upstream.

IIO trigger interface function iio_trigger_get() should be called after
iio_trigger_register() (or its devm analogue) strictly, because of
iio_trigger_get() acquires module refcnt based on the trigger->owner
pointer, which is initialized inside iio_trigger_register() to
THIS_MODULE.
If this call order is wrong, the next iio_trigger_put() (from sysfs
callback or "delete module" path) will dereference "default" module
refcnt, which is incorrect behaviour.

Fixes: c1288b83 ("iio: accel: kxcjk-1013: Increment ref counter for indio_dev->trig")
Signed-off-by: default avatarDmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220524181150.9240-3-ddrokosov@sberdevices.ru


Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a1356318
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