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caif-hsi: fix possible deadlock in cfhsi_exit_module()

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[ Upstream commit fdd258d49e ]

cfhsi_exit_module() calls unregister_netdev() under rtnl_lock().
but unregister_netdev() internally calls rtnl_lock().
So deadlock would occur.

Fixes: c412540063 ("caif-hsi: Add rtnl support")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Taehee Yoo 2019-07-15 14:10:17 +09:00 committed by Greg Kroah-Hartman
parent 8fb37be120
commit d7cdac6dc4
1 changed files with 1 additions and 1 deletions
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2
drivers/net/caif/caif_hsi.c
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@ -1455,7 +1455,7 @@ static void __exit cfhsi_exit_module(void)
rtnl_lock();
list_for_each_safe(list_node, n, &cfhsi_list) {
cfhsi = list_entry(list_node, struct cfhsi, list);
unregister_netdev(cfhsi->ndev);
unregister_netdevice(cfhsi->ndev);
}
rtnl_unlock();
}