scsi: qla2xxx: Reject EH_{abort|device_reset|target_request}

Reject eh_{abort|device_reset|target_reset} when rport is being torn down
or chip is down.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_os.c

@@ -1296,6 +1296,9 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
 	if (!qpair)
 		return SUCCESS;
 
+	if (sp->fcport && sp->fcport->deleted)
+		return SUCCESS;
+
 	spin_lock_irqsave(qpair->qp_lock_ptr, flags);
 	if (sp->type != SRB_SCSI_CMD || GET_CMD_SP(sp) != cmd) {
 		/* there's a chance an interrupt could clear
@@ -1420,6 +1423,9 @@ __qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
 	if (err != 0)
 		return err;
 
+	if (fcport->deleted)
+		return SUCCESS;
+
 	ql_log(ql_log_info, vha, 0x8009,
 	    "%s RESET ISSUED nexus=%ld:%d:%llu cmd=%p.\n", name, vha->host_no,
 	    cmd->device->id, cmd->device->lun, cmd);
@@ -1534,6 +1540,9 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 		return ret;
 	ret = FAILED;
 
+	if (qla2x00_chip_is_down(vha))
+		return ret;
+
 	ql_log(ql_log_info, vha, 0x8012,
 	    "BUS RESET ISSUED nexus=%ld:%d:%llu.\n", vha->host_no, id, lun);