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net: lapb: Decrease the refcount of "struct lapb_cb" in lapb_device_event

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In lapb_device_event, lapb_devtostruct is called to get a reference to
an object of "struct lapb_cb". lapb_devtostruct increases the refcount
of the object and returns a pointer to it. However, we didn't decrease
the refcount after we finished using the pointer. This patch fixes this
problem.

Fixes: a4989fa911 ("net/lapb: support netdev events")
Cc: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201231174331.64539-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xie He 2020-12-31 09:43:31 -08:00 committed by Jakub Kicinski
parent e80bd76fbf
commit b40f97b91a
1 changed files with 1 additions and 0 deletions
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net/lapb/lapb_iface.c
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@ -489,6 +489,7 @@ static int lapb_device_event(struct notifier_block *this, unsigned long event,
break;
}
lapb_put(lapb);
return NOTIFY_DONE;
}