[SCSI] lpfc 8.2.5 : Correct ndlp referencing issues

Correct ndlp referencing issues:
- Fix ndlp kref issues due to race conditions between threads
- Fix cancel els delay retry event which missed an ndlp reference count

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 83567b9755b4..572c525ad2b5 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -595,6 +595,8 @@ struct lpfc_hba {
         unsigned long last_completion_time;
         struct timer_list hb_tmofunc;
         uint8_t hb_outstanding;
+        /* ndlp reference management */
+        spinlock_t ndlp_lock;
         /*
          * Following bit will be set for all buffer tags which are not
          * associated with any HBQ.