All mmiowb() invocations have been removed, so there's no need to keep banging on about it. Signed-off-by: Will Deacon <will.deacon@xxxxxxx> --- drivers/scsi/qla1280.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c index 93acbc5094f0..327eff67a1ee 100644 --- a/drivers/scsi/qla1280.c +++ b/drivers/scsi/qla1280.c @@ -3363,16 +3363,6 @@ qla1280_isp_cmd(struct scsi_qla_host *ha) /* * Update request index to mailbox4 (Request Queue In). - * The mmiowb() ensures that this write is ordered with writes by other - * CPUs. Without the mmiowb(), it is possible for the following: - * CPUA posts write of index 5 to mailbox4 - * CPUA releases host lock - * CPUB acquires host lock - * CPUB posts write of index 6 to mailbox4 - * On PCI bus, order reverses and write of 6 posts, then index 5, - * causing chip to issue full queue of stale commands - * The mmiowb() prevents future writes from crossing the barrier. - * See Documentation/driver-api/device-io.rst for more information. */ WRT_REG_WORD(®->mailbox4, ha->req_ring_index); -- 2.11.0
