[SCSI] lpfc 8.3.31: Fix driver crash during back-to-back ramp events
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index d5f3fcc..9434b03 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -399,6 +399,14 @@
num_rsrc_err = atomic_read(&phba->num_rsrc_err);
num_cmd_success = atomic_read(&phba->num_cmd_success);
+ /*
+ * The error and success command counters are global per
+ * driver instance. If another handler has already
+ * operated on this error event, just exit.
+ */
+ if (num_rsrc_err == 0)
+ return;
+
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {