[SCSI] lpfc 8.3.7: Fix SCSI protocol related errors.

Fix SCSI protocol related errors:
- Avoid I/O failures during EEH and HBA/CNA reset by correcting when
  we block the targets on the adapter.

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

2 files changed, 7 insertions, 2 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index f40b9609f6e4..1c2737293eb5 100755
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -747,6 +747,10 @@ lpfc_linkdown(struct lpfc_hba *phba)
 
         if (phba->link_state == LPFC_LINK_DOWN)
                 return 0;
+
+        /* Block all SCSI stack I/Os */
+        lpfc_scsi_dev_block(phba);
+
         spin_lock_irq(&phba->hbalock);
         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_DISCOVERED);
         if (phba->link_state > LPFC_LINK_DOWN) {
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 7083ef3b3878..974ea6d85efe 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -7226,8 +7226,6 @@ lpfc_prep_dev_for_perm_failure(struct lpfc_hba *phba)
 {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                         "2711 PCI channel permanent disable for failure\n");
-        /* Block all SCSI devices' I/Os on the host */
-        lpfc_scsi_dev_block(phba);
         /* Clean up all driver's outstanding SCSI I/Os */
         lpfc_sli_flush_fcp_rings(phba);
 }
@@ -7256,6 +7254,9 @@ lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
         struct Scsi_Host *shost = pci_get_drvdata(pdev);
         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
+        /* Block all SCSI devices' I/Os on the host */
+        lpfc_scsi_dev_block(phba);
+
         switch (state) {
         case pci_channel_io_normal:
                 /* Non-fatal error, prepare for recovery */