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由 Keith Packard 提交于
This uses the same spinlock as the user_irq code as it shares the same register, ensuring that interrupt registers are updated atomically. Signed-off-by: NKeith Packard <keithp@keithp.com> Signed-off-by: NEric Anholt <eric@anholt.net> Signed-off-by: NDave Airlie <airlied@redhat.com>
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