qla2xxx: print the right array elements in qlt_async_event

Based upon Alan's patch from Coverity scan id 793583, these debug
messages in qlt_async_event() should be starting from byte 0, which is
always the Asynchronous Event Status Code from the parent switch statement.

Also, rename reason_code -> login_code following the language used in
2500 FW spec for Port Database Changed (0x8014) -> Port Database Changed
Event Mailbox Register for mailbox[2].

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/scsi/qla2xxx/qla_target.c

@@ -3960,7 +3960,7 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
 {
 	struct qla_hw_data *ha = vha->hw;
 	struct qla_tgt *tgt = ha->tgt.qla_tgt;
-	int reason_code;
+	int login_code;
 
 	ql_dbg(ql_dbg_tgt, vha, 0xe039,
 	    "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
@@ -4003,9 +4003,9 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
 	{
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b,
 		    "qla_target(%d): Async LOOP_UP occured "
-		    "(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
-		    le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
-		    le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		    "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
+		    le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
+		    le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
 		if (tgt->link_reinit_iocb_pending) {
 			qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
 			    0, 0, 0, 0, 0, 0);
@@ -4020,33 +4020,34 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
 	case MBA_RSCN_UPDATE:
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c,
 		    "qla_target(%d): Async event %#x occured "
-		    "(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx, code,
-		    le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
-		    le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		    "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code,
+		    le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
+		    le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
 		break;
 
 	case MBA_PORT_UPDATE:
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
 		    "qla_target(%d): Port update async event %#x "
-		    "occured: updating the ports database (m[1]=%x, m[2]=%x, "
-		    "m[3]=%x, m[4]=%x)", vha->vp_idx, code,
-		    le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
-		    le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
-		reason_code = le16_to_cpu(mailbox[2]);
-		if (reason_code == 0x4)
+		    "occured: updating the ports database (m[0]=%x, m[1]=%x, "
+		    "m[2]=%x, m[3]=%x)", vha->vp_idx, code,
+		    le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
+		    le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
+
+		login_code = le16_to_cpu(mailbox[2]);
+		if (login_code == 0x4)
 			ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
 			    "Async MB 2: Got PLOGI Complete\n");
-		else if (reason_code == 0x7)
+		else if (login_code == 0x7)
 			ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
 			    "Async MB 2: Port Logged Out\n");
 		break;
 
 	default:
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
 		    "qla_target(%d): Async event %#x occured: "
-		    "ignore (m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
-		    code, le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
-		    le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4]));
+		    "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
+		    code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
+		    le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
 		break;
 	}