Hi Paul,

Commit cd95851785bcfe95fdf73689e8ecb5a1c5959231 ("rcu: fix classic RCU
locking cleanup lockdep problem") from the sched tree used a long
(instead of unsigned long) for the flags argument to
spin_lock_irqsave/restore producing these warnings:

kernel/rcuclassic.c: In function 'rcu_init_percpu_data':
kernel/rcuclassic.c:719: warning: comparison of distinct pointer types lacks a cast
kernel/rcuclassic.c:727: warning: comparison of distinct pointer types lacks a cast

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/