linux-kernel - Re: [PATCH v2 4/9] scsi: lpfc: Change to use pci_aer_clear_uncorrect_error

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Date:   Tue, 27 Sep 2022 12:57:35 -0700
From:   Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Zhuo Chen <chenzhuo.1@...edance.com>, bhelgaas@...gle.com,
        ruscur@...sell.cc, oohall@...il.com, fancer.lancer@...il.com,
        jdmason@...zu.us, dave.jiang@...el.com, allenbh@...il.com,
        james.smart@...adcom.com, dick.kennedy@...adcom.com,
        jejb@...ux.ibm.com, martin.petersen@...cle.com
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, ntb@...ts.linux.dev,
        linux-scsi@...r.kernel.org
Subject: Re: [PATCH v2 4/9] scsi: lpfc: Change to use
 pci_aer_clear_uncorrect_error_status()



On 9/27/22 8:35 AM, Zhuo Chen wrote:
> Status bits for ERR_NONFATAL errors only are cleared in
> pci_aer_clear_nonfatal_status(), but we want clear uncorrectable
> error status in lpfc_aer_cleanup_state(), so we change to use
> pci_aer_clear_uncorrect_error_status().

I think you don't need to mention status bits here. Just use terms
"fatal" and "non-fatal" errors.

lpfc_aer_cleanup_state() requires clearing both fatal and non-fatal
uncorrectable error status. 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@...edance.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);

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer