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author | Dmitry Rokosov <DDRokosov@sberdevices.ru> | 2022-05-24 18:14:46 +0000 |
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committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-19 17:22:49 +0100 |
commit | 10b9c2c33ac706face458feab8965f11743c98c0 (patch) | |
tree | 4fb1babd63918356a3f69d6a58d252c098d97532 /tools/perf/scripts/python/failed-syscalls-by-pid.py | |
parent | d710359c0b445e8c03e24f19ae2fb79ce7282260 (diff) |
iio:humidity:hts221: 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: e4a70e3e7d84 ("iio: humidity: add support to hts221 rh/temp combo device")
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220524181150.9240-6-ddrokosov@sberdevices.ru
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'tools/perf/scripts/python/failed-syscalls-by-pid.py')
0 files changed, 0 insertions, 0 deletions