scsi: qla2xxx: Chip reset uses wrong lock during IO flush.

As part of chip reset, all commands from all QPairs are
flushed. This patch fixes code to use Q Pair lock for flush
instead of using old hardware_lock.
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>

drivers/scsi/qla2xxx/qla_os.c

@@ -1704,25 +1704,21 @@ qla2x00_loop_reset(scsi_qla_host_t *vha)
 	return QLA_SUCCESS;
 }
 
-void
-qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
+static void
+__qla2x00_abort_all_cmds(struct qla_qpair *qp, int res)
 {
-	int que, cnt, status;
+	int cnt, status;
 	unsigned long flags;
 	srb_t *sp;
+	scsi_qla_host_t *vha = qp->vha;
 	struct qla_hw_data *ha = vha->hw;
 	struct req_que *req;
 	struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
 	struct qla_tgt_cmd *cmd;
 	uint8_t trace = 0;
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
-	for (que = 0; que < ha->max_req_queues; que++) {
-		req = ha->req_q_map[que];
-		if (!req)
-			continue;
-		if (!req->outstanding_cmds)
-			continue;
+	spin_lock_irqsave(qp->qp_lock_ptr, flags);
+	req = qp->req;
 	for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) {
 		sp = req->outstanding_cmds[cnt];
 		if (sp) {
@@ -1731,11 +1727,11 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
 				if (sp->type == SRB_NVME_CMD ||
 				    sp->type == SRB_NVME_LS) {
 					sp_get(sp);
-						spin_unlock_irqrestore(
-						    &ha->hardware_lock, flags);
+					spin_unlock_irqrestore(qp->qp_lock_ptr,
+					    flags);
 					qla_nvme_abort(ha, sp);
-						spin_lock_irqsave(
-						    &ha->hardware_lock, flags);
+					spin_lock_irqsave(qp->qp_lock_ptr,
+					    flags);
 				} else if (GET_CMD_SP(sp) &&
 				    !ha->flags.eeh_busy &&
 				    (!test_bit(ABORT_ISP_ACTIVE,
@@ -1756,12 +1752,12 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
 					 * result 'res').
 					 */
 					sp_get(sp);
-						spin_unlock_irqrestore(
-						    &ha->hardware_lock, flags);
+					spin_unlock_irqrestore(qp->qp_lock_ptr,
+					    flags);
 					status = qla2xxx_eh_abort(
 					    GET_CMD_SP(sp));
-						spin_lock_irqsave(
-						    &ha->hardware_lock, flags);
+					spin_lock_irqsave(qp->qp_lock_ptr,
+					    flags);
 					/*
 					 * Get rid of extra reference
 					 * if immediate exit from
@@ -1784,13 +1780,27 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
 					continue;
 				}
 				cmd = (struct qla_tgt_cmd *)sp;
-					qlt_abort_cmd_on_host_reset(cmd->vha,
-					    cmd);
+				qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
 			}
 		}
 	}
+	spin_unlock_irqrestore(qp->qp_lock_ptr, flags);
+}
+
+void
+qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
+{
+	int que;
+	struct qla_hw_data *ha = vha->hw;
+
+	__qla2x00_abort_all_cmds(ha->base_qpair, res);
+
+	for (que = 0; que < ha->max_qpairs; que++) {
+		if (!ha->queue_pair_map[que])
+			continue;
+
+		__qla2x00_abort_all_cmds(ha->queue_pair_map[que], res);
 	}
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 }
 
 static int