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author | Dmitry Rokosov <DDRokosov@sberdevices.ru> | 2022-05-24 21:14:45 +0300 |
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committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-19 19:22:49 +0300 |
commit | d710359c0b445e8c03e24f19ae2fb79ce7282260 (patch) | |
tree | cb3f0d69cd0dc5ca562a828e96d32d33e8893542 /scripts/gdb/linux/utils.py | |
parent | 9354c224c9b4f55847a0de3e968cba2ebf15af3b (diff) | |
download | linux-d710359c0b445e8c03e24f19ae2fb79ce7282260.tar.xz |
iio:chemical:ccs811: 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: f1f065d7ac30 ("iio: chemical: ccs811: Add support for data ready trigger")
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220524181150.9240-5-ddrokosov@sberdevices.ru
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions