SCU_MAX_EVENTS_SHIFT  543 drivers/scsi/isci/host.c 				       (SMU_COMPLETION_QUEUE_GET_EVENT_CYCLE_BIT_SHIFT - SCU_MAX_EVENTS_SHIFT);
SCU_MAX_EVENTS_SHIFT   89 drivers/scsi/isci/isci.h #define SCU_MAX_EVENTS                    (1 << SCU_MAX_EVENTS_SHIFT)