scsi: qla2xxx: Enable ATIO interrupt handshake for ISP27XX
Enable ATIO Q interrupt handshake for ISP27XX. This patch coalesce ATIO's interrupts for Quad port ISP27XX adapter. Interrupt coalesce allows performance to scale for this specific case. Signed-off-by: NQuinn Tran <quinn.tran@cavium.com> Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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