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net: wan: lapbether.c: Use built-in RCU list checking
authorMadhuparna Bhowmik <madhuparnabhowmik04@gmail.com>
Wed, 15 Jan 2020 11:41:01 +0000 (17:11 +0530)
committerDavid S. Miller <davem@davemloft.net>
Thu, 16 Jan 2020 13:30:52 +0000 (14:30 +0100)
commit93ad0f969fc704959636846fc7f8d1aaf57f523e
tree5a232295b049fbb2ebc90a25f7828bedd8899ba4tree | snapshot
parentbd5874da57edd001b35cf28ae737779498c16a56commit | diff
net: wan: lapbether.c: Use built-in RCU list checking

The only callers of the function lapbeth_get_x25_dev()
are lapbeth_rcv() and lapbeth_device_event().

lapbeth_rcv() uses rcu_read_lock() whereas lapbeth_device_event()
is called with RTNL held (As mentioned in the comments).

Therefore, pass lockdep_rtnl_is_held() as cond argument in
list_for_each_entry_rcu();

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik04@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/wan/lapbether.c diff | blob | blame | history
Linux Project Source (from git://github.com/torvalds/linux)