net: bcmgenet: relax lock constraints to reduce IRQ latency
Since the ring locks are not used in a hard IRQ context it is often not necessary to disable global IRQs while waiting on a lock. Using less restrictive lock and unlock calls improves the real-time responsiveness of the system. Signed-off-by: Doug Berger <opendmb@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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