Messages in this thread | | | Date | Tue, 6 Dec 2022 16:13:35 -0600 | From | Bjorn Helgaas <> | Subject | Re: [PATCH v3 4/9] scsi: lpfc: Change to use pci_aer_clear_uncorrect_error_status() |
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[moved James, Dick, LPFC supporters to "to"]
On Wed, Sep 28, 2022 at 06:59:41PM +0800, Zhuo Chen wrote: > lpfc_aer_cleanup_state() requires clearing both fatal and non-fatal > uncorrectable error status.
I don't know what the point of lpfc_aer_cleanup_state() is. AER errors should be handled and cleared by the PCI core, not by individual drivers. Only lpfc, liquidio, and sky2 touch PCI_ERR_UNCOR_STATUS.
But lpfc_aer_cleanup_state() is visible in the "lpfc_aer_state_cleanup" sysfs file, so removing it would break any userspace that uses it.
If we can rely on the PCI core to clean up AER errors itself (admittedly, that might be a big "if"), maybe lpfc_aer_cleanup_state() could just become a no-op?
Any comment from the LPFC folks?
Ideally, I would rather not export pci_aer_clear_nonfatal_status() or pci_aer_clear_uncorrect_error_status() outside the PCI core at all.
> But using pci_aer_clear_nonfatal_status() > will only clear non-fatal error status. To clear both fatal and > non-fatal error status, use pci_aer_clear_uncorrect_error_status(). > > Signed-off-by: Zhuo Chen <chenzhuo.1@bytedance.com> > --- > drivers/scsi/lpfc/lpfc_attr.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c > index 09cf2cd0ae60..d835cc0ba153 100644 > --- a/drivers/scsi/lpfc/lpfc_attr.c > +++ b/drivers/scsi/lpfc/lpfc_attr.c > @@ -4689,7 +4689,7 @@ static DEVICE_ATTR_RW(lpfc_aer_support); > * Description: > * If the @buf contains 1 and the device currently has the AER support > * enabled, then invokes the kernel AER helper routine > - * pci_aer_clear_nonfatal_status() to clean up the uncorrectable > + * pci_aer_clear_uncorrect_error_status() to clean up the uncorrectable > * error status register. > * > * Notes: > @@ -4715,7 +4715,7 @@ lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr, > return -EINVAL; > > if (phba->hba_flag & HBA_AER_ENABLED) > - rc = pci_aer_clear_nonfatal_status(phba->pcidev); > + rc = pci_aer_clear_uncorrect_error_status(phba->pcidev); > > if (rc == 0) > return strlen(buf); > -- > 2.30.1 (Apple Git-130) >
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