[SCSI] lpfc 8.1.7: Issue DOWN_LINK prior to INIT_LINK to work around link failure issue

Issue DOWN_LINK prior to INIT_LINK to work around link failure issue

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index b62a72dfab29..511de17a1f83 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -219,9 +219,19 @@ lpfc_issue_lip(struct Scsi_Host *host)
                 return -ENOMEM;
 
         memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
-        lpfc_init_link(phba, pmboxq, phba->cfg_topology, phba->cfg_link_speed);
+        pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
+        pmboxq->mb.mbxOwner = OWN_HOST;
+
         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
 
+        if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
+                memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
+                lpfc_init_link(phba, pmboxq, phba->cfg_topology,
+                               phba->cfg_link_speed);
+                mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
+                                                     phba->fc_ratov * 2);
+        }
+
         if (mbxstatus == MBX_TIMEOUT)
                 pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         else