[SCSI] lpfc 8.1.2: Fixed a race condition in the PLOGI retry logic.

Fixed a race condition in the PLOGI retry logic.
Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/lpfc/lpfc_els.c

@@ -1467,24 +1467,28 @@ lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
 		lpfc_issue_els_flogi(phba, ndlp, retry);
 		break;
 	case ELS_CMD_PLOGI:
-		ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
-		lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
-		lpfc_issue_els_plogi(phba, ndlp, retry);
+		if (!lpfc_issue_els_plogi(phba, ndlp, retry)) {
+			ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
+			lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
+		}
 		break;
 	case ELS_CMD_ADISC:
-		ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
-		lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
-		lpfc_issue_els_adisc(phba, ndlp, retry);
+		if (!lpfc_issue_els_adisc(phba, ndlp, retry)) {
+			ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
+			lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
+		}
 		break;
 	case ELS_CMD_PRLI:
-		ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
-		lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
-		lpfc_issue_els_prli(phba, ndlp, retry);
+		if (!lpfc_issue_els_prli(phba, ndlp, retry)) {
+			ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
+			lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
+		}
 		break;
 	case ELS_CMD_LOGO:
-		ndlp->nlp_state = NLP_STE_NPR_NODE;
-		lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
-		lpfc_issue_els_logo(phba, ndlp, retry);
+		if (!lpfc_issue_els_logo(phba, ndlp, retry)) {
+			ndlp->nlp_state = NLP_STE_NPR_NODE;
+			lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
+		}
 		break;
 	}
 	return;

drivers/scsi/lpfc/lpfc_nportdisc.c

@@ -1627,6 +1627,14 @@ lpfc_device_recov_npr_node(struct lpfc_hba * phba,
 {
 	spin_lock_irq(phba->host->host_lock);
 	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+	if (ndlp->nlp_flag & NLP_DELAY_TMO) {
+		ndlp->nlp_flag &= ~NLP_DELAY_TMO;
+		if (!list_empty(&ndlp->els_retry_evt.evt_listp))
+			list_del_init(&ndlp->els_retry_evt.evt_listp);
+		spin_unlock_irq(phba->host->host_lock);
+		del_timer_sync(&ndlp->nlp_delayfunc);
+		return (ndlp->nlp_state);
+	}
 	spin_unlock_irq(phba->host->host_lock);
 	return (ndlp->nlp_state);
 }