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authorDmitry Rokosov <DDRokosov@sberdevices.ru>2022-05-24 20:14:43 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2022-06-19 18:22:48 +0200
commit9354c224c9b4f55847a0de3e968cba2ebf15af3b (patch)
treee60f469b992ce885e94ed51c47265966f4e7b734 /drivers/dca
parentiio:accel:kxcjk-1013: rearrange iio trigger get and register (diff)
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iio:accel:mxc4005: rearrange iio trigger get and register
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: 47196620c82f ("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>
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