[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>

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index f40b960..1c27372 100755 (executable)
--- 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 7083ef3..974ea6d 100644 (file)
--- 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 */