iio:accel:kxcjk-1013: rearrange iio trigger get and register - linux-dev - Linux kernel development work

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author	Dmitry Rokosov <DDRokosov@sberdevices.ru>	2022-05-24 18:14:42 +0000
committer	Jonathan Cameron <Jonathan.Cameron@huawei.com>	2022-06-19 17:22:48 +0100
commit	ed302925d708f2f97ae5e9fd6c56c16bb34f6629 (patch)
tree	e25996b35cfafa12c651645f956f1676f426b0f7 /Documentation/driver-api/serial/ssh:/git@git.zx2c4.com
parent	iio:accel:bma180: rearrange iio trigger get and register (diff)

iio:accel:kxcjk-1013: 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: c1288b833881 ("iio: accel: kxcjk-1013: Increment ref counter for indio_dev->trig") Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru> Reviewed-by: Andy 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: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Diffstat (limited to 'Documentation/driver-api/serial/ssh:/git@git.zx2c4.com')

0 files changed, 0 insertions, 0 deletions

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