linux-kernel - Re: [PATCH] PCI/AER: Do not clear AER bits if we don't own AER

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Date:   Thu, 19 Jul 2018 10:55:06 -0500
From:   "Alex G." <mr.nuke.me@...il.com>
To:     Sinan Kaya <okaya@...nel.org>, bhelgaas@...gle.com,
        keith.busch@...el.com
Cc:     alex_gagniuc@...lteam.com, austin_bolen@...l.com,
        shyam_iyer@...l.com, Frederick Lawler <fred@...dlawl.com>,
        Oza Pawandeep <poza@...eaurora.org>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI/AER: Do not clear AER bits if we don't own AER



On 07/17/2018 10:41 AM, Sinan Kaya wrote:
> 
> On 7/17/2018 8:31 AM, Alexandru Gagniuc wrote:
>> +    if (pcie_aer_get_firmware_first(dev))
>> +        return -EIO;
> 
> Can you move this to closer to the caller pci_aer_init()?

I could move it there. although pci_cleanup_aer_error_status_regs() is 
called directly from pci_restore_state.  Of course, aer_cap should be 
zero in this case, and we'd still bail out.
I find the intent clearer if we check it here rather than having to do 
the mental parsing of the state of aer_cap.

Alex