[SCSI] qla2xxx: Change from irq to irqsave with host_lock

Make the driver safer by using irqsave/irqrestore with host_lock.
Signed-off-by: NMadhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

drivers/scsi/qla2xxx/qla_attr.c

@@ -1561,6 +1561,7 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport)
 {
 	struct Scsi_Host *host = rport_to_shost(rport);
 	fc_port_t *fcport = *(fc_port_t **)rport->dd_data;
+	unsigned long flags;
 
 	if (!fcport)
 		return;
@@ -1573,10 +1574,10 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport)
 	 * Transport has effectively 'deleted' the rport, clear
 	 * all local references.
 	 */
-	spin_lock_irq(host->host_lock);
+	spin_lock_irqsave(host->host_lock, flags);
 	fcport->rport = fcport->drport = NULL;
 	*((fc_port_t **)rport->dd_data) = NULL;
-	spin_unlock_irq(host->host_lock);
+	spin_unlock_irqrestore(host->host_lock, flags);
 
 	if (test_bit(ABORT_ISP_ACTIVE, &fcport->vha->dpc_flags))
 		return;

drivers/scsi/qla2xxx/qla_init.c

@@ -2505,11 +2505,12 @@ qla2x00_rport_del(void *data)
 {
 	fc_port_t *fcport = data;
 	struct fc_rport *rport;
+	unsigned long flags;
 
-	spin_lock_irq(fcport->vha->host->host_lock);
+	spin_lock_irqsave(fcport->vha->host->host_lock, flags);
 	rport = fcport->drport ? fcport->drport: fcport->rport;
 	fcport->drport = NULL;
-	spin_unlock_irq(fcport->vha->host->host_lock);
+	spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
 	if (rport)
 		fc_remote_port_delete(rport);
 }
@@ -2879,6 +2880,7 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport)
 	struct fc_rport_identifiers rport_ids;
 	struct fc_rport *rport;
 	struct qla_hw_data *ha = vha->hw;
+	unsigned long flags;
 
 	qla2x00_rport_del(fcport);
 
@@ -2893,9 +2895,9 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport)
 		    "Unable to allocate fc remote port!\n");
 		return;
 	}
-	spin_lock_irq(fcport->vha->host->host_lock);
+	spin_lock_irqsave(fcport->vha->host->host_lock, flags);
 	*((fc_port_t **)rport->dd_data) = fcport;
-	spin_unlock_irq(fcport->vha->host->host_lock);
+	spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
 
 	rport->supported_classes = fcport->supported_classes;
 

drivers/scsi/qla2xxx/qla_os.c

@@ -2513,6 +2513,7 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
 {
 	struct fc_rport *rport;
 	scsi_qla_host_t *base_vha;
+	unsigned long flags;
 
 	if (!fcport->rport)
 		return;
@@ -2520,9 +2521,9 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
 	rport = fcport->rport;
 	if (defer) {
 		base_vha = pci_get_drvdata(vha->hw->pdev);
-		spin_lock_irq(vha->host->host_lock);
+		spin_lock_irqsave(vha->host->host_lock, flags);
 		fcport->drport = rport;
-		spin_unlock_irq(vha->host->host_lock);
+		spin_unlock_irqrestore(vha->host->host_lock, flags);
 		set_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
 		qla2xxx_wake_dpc(base_vha);
 	} else