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The wireless sysfs methods like the rest of the networking sysfs methods are removed with the rtnl_lock held and block until the existing methods stop executing. So use rtnl_trylock and restart_syscall so that the code continues to work. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>