iio:accel:mxc4005: rearrange iio trigger get and register
commit 9354c224 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: 47196620 ("iio: mxc4005: add data ready trigger for mxc4005") Signed-off-by:Dmitry Rokosov <ddrokosov@sberdevices.ru> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20220524181150.9240-4-ddrokosov@sberdevices.ru Cc: <Stable@vger.kernel.org> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
23c158ca
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