linux-kernel - Re: [PATCH 2/2] PCI/AER: Determine AER ownership based on

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Date:   Thu, 15 Nov 2018 16:43:38 -0700
From:   Keith Busch <keith.busch@...el.com>
To:     Alexandru Gagniuc <mr.nuke.me@...il.com>
Cc:     helgaas@...gle.com, austin_bolen@...l.com,
        alex_gagniuc@...lteam.com, Shyam_Iyer@...l.com, lukas@...ner.de,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Russell Currey <ruscur@...sell.cc>,
        Sam Bobroff <sbobroff@...ux.ibm.com>,
        Oliver O'Halloran <oohall@...il.com>,
        linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 2/2] PCI/AER: Determine AER ownership based on _OSC
 instead of HEST

On Thu, Nov 15, 2018 at 05:16:03PM -0600, Alexandru Gagniuc wrote:
>  static void aer_set_firmware_first(struct pci_dev *pci_dev)
>  {
> -	int rc;
> -	struct aer_hest_parse_info info = {
> -		.pci_dev	= pci_dev,
> -		.firmware_first	= 0,
> -	};
> +	struct pci_host_bridge *host = pci_find_host_bridge(pci_dev->bus);
>  
> -	rc = apei_hest_parse(aer_hest_parse, &info);
> -
> -	if (rc)
> -		pci_dev->__aer_firmware_first = 0;
> -	else
> -		pci_dev->__aer_firmware_first = info.firmware_first;
> +	pci_dev->__aer_firmware_first = !host->native_aer;
>  	pci_dev->__aer_firmware_first_valid = 1;
>  }

I think we can clean this up even more by removing the setter and the
__aer_firmware_first fields, and have the pcie_aer_get_firmware_first()
go directly to the host bride->native_aer.