linux-kernel - Re: [PATCH] PCI/AER: Clear uncorrectable error status for device

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Date:   Wed, 19 Sep 2018 00:34:52 +0530
From:   poza@...eaurora.org
To:     Sinan Kaya <okaya@...nel.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, Keith Busch <keith.busch@...el.com>,
        Wei Zhang <wzhang@...com>, linux-kernel@...r.kernel.org,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        Dan Williams <dan.j.williams@...el.com>,
        Kees Cook <keescook@...omium.org>,
        Sagi Grimberg <sagi@...mberg.me>,
        Adaptec OEM Raid Solutions <aacraid@...rosemi.com>,
        "James E . J . Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH] PCI/AER: Clear uncorrectable error status for device

On 2018-09-18 20:00, Sinan Kaya wrote:
> On 9/18/2018 4:20 AM, Oza Pawandeep wrote:
>> +++ b/drivers/pci/pcie/err.c
>> @@ -265,6 +265,8 @@ static pci_ers_result_t 
>> broadcast_error_message(struct pci_dev *dev,
>>   		 * The error is non fatal so the bus is ok; just invoke
>>   		 * the callback for the function that logged the error.
>>   		 */
>> +		if (cb == report_resume)
>> +			pci_cleanup_aer_uncorrect_error_status(dev);
>>   		cb(dev, &result_data);
>>   	}
> 
> In order to follow the existing behavior (drivers are calling
> pci_cleanup_aer_uncorrect_error_status() right before return),
> you should probably move the pci_cleanup_aer_uncorrect_error_status
> after
> 
> cb(dev, &result_data);
> 
> line.

some drivers are calling it in slot_reset, which is before resume,
while some are calling in beginning of resume (e.g. netxen_io_resume)

hence I have kept it before calling resume()   (e.g. before cb(dev, 
&result_data))

Regards,
Oza.