[SCSI] lpfc 8.3.22: Add support for PCI Adapter Failure
Periodically poll adapter registers to detect pci adapter failure
(reads return -1). On failure, take port offline, set error indicators
and wake up worker threads. Threads will take adapter offline.
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
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_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 427c046..4e0faa0 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -1224,7 +1224,10 @@
if (val & ENABLE_FCP_RING_POLLING) {
if ((val & DISABLE_FCP_RING_INT) &&
!(old_val & DISABLE_FCP_RING_INT)) {
- creg_val = readl(phba->HCregaddr);
+ if (lpfc_readl(phba->HCregaddr, &creg_val)) {
+ spin_unlock_irq(&phba->hbalock);
+ return -EINVAL;
+ }
creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
writel(creg_val, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
@@ -1242,7 +1245,10 @@
spin_unlock_irq(&phba->hbalock);
del_timer(&phba->fcp_poll_timer);
spin_lock_irq(&phba->hbalock);
- creg_val = readl(phba->HCregaddr);
+ if (lpfc_readl(phba->HCregaddr, &creg_val)) {
+ spin_unlock_irq(&phba->hbalock);
+ return -EINVAL;
+ }
creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
writel(creg_val, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */