diff options
| author | Himanshu Madhani | 2014-09-25 12:14:59 +0200 |
|---|---|---|
| committer | Christoph Hellwig | 2014-09-25 14:25:08 +0200 |
| commit | 63163e060127876f57c327c85f2890ed427a4907 (patch) | |
| tree | 42494fcc3c8b9fec4fe6474bb753d640bbc54350 /drivers | |
| parent | qla2xxx: Add flags for tracing the target commands. (diff) | |
| download | kernel-qcow2-linux-63163e060127876f57c327c85f2890ed427a4907.tar.gz kernel-qcow2-linux-63163e060127876f57c327c85f2890ed427a4907.tar.xz kernel-qcow2-linux-63163e060127876f57c327c85f2890ed427a4907.zip | |
qla2xxx: Add memory barrier before ringing doorbell.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_target.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index f3287e1bc554..829752cfd73f 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -1040,6 +1040,8 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha, "qla_target(%d): Sending 24xx Notify Ack %d\n", vha->vp_idx, nack->u.isp24.status); + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); } @@ -1117,6 +1119,8 @@ static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, vha->vha_tgt.qla_tgt->abts_resp_expected++; + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); } @@ -1162,6 +1166,8 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, CTIO7_FLAGS_TERMINATE); ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id); + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, @@ -1333,6 +1339,8 @@ static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, ctio->u.status1.response_len = __constant_cpu_to_le16(8); ctio->u.status1.sense_data[0] = resp_code; + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(ha, ha->req); } @@ -2412,6 +2420,8 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ cmd->cmd_sent_to_fw = 1; + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); spin_unlock_irqrestore(&ha->hardware_lock, flags); @@ -2488,6 +2498,8 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) cmd->state = QLA_TGT_STATE_NEED_DATA; cmd->cmd_sent_to_fw = 1; + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); spin_unlock_irqrestore(&ha->hardware_lock, flags); @@ -2696,6 +2708,8 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha, if (ctio24->u.status1.residual != 0) ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); return ret; } @@ -4329,6 +4343,8 @@ static int __qlt_send_busy(struct scsi_qla_host *vha, */ ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); ctio24->u.status1.scsi_status = cpu_to_le16(status); + /* Memory Barrier */ + wmb(); qla2x00_start_iocbs(vha, vha->req); return 0; } |