diff options
| author | James Smart <james.smart@emulex.com> | 2011-03-12 00:06:12 +0300 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-03-23 19:36:09 +0300 |
| commit | 9940b97bb30d7435c881418c809ed652eb329583 (patch) | |
| tree | d274c01b97553711c10f0d862b460aa3cd00ba02 /drivers/scsi/lpfc/lpfc_attr.c | |
| parent | 7f86059ac016d8662e5fbfab4875529510977b47 (diff) | |
| download | linux-9940b97bb30d7435c881418c809ed652eb329583.tar.xz | |
[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>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index 427c046e8209..4e0faa00b96f 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -1224,7 +1224,10 @@ lpfc_poll_store(struct device *dev, struct device_attribute *attr, 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 @@ lpfc_poll_store(struct device *dev, struct device_attribute *attr, 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 */ |