sctp: consolidate local_bh_disable/enable + spin_lock/unlock to _bh variant
local_bh_disable() + spin_lock() is equivalent to spin_lock_bh(), same for the unlock/enable case, so replace the calls by the appropriate wrappers. Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org> Acked-by: NMarcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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