linux-kernel - Re: [RESEND PATCH v2 1/2] PCI: Add defines for normal and subtractive PCI bridges

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Message-ID: <20220217211134.GA305475@bhelgaas>
Date:   Thu, 17 Feb 2022 15:11:34 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Pali Rohár <pali@...nel.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v2 1/2] PCI: Add defines for normal and
 subtractive PCI bridges

On Mon, Feb 14, 2022 at 12:41:08PM +0100, Pali Rohár wrote:
> Add following two new PCI class codes defines into pci_ids.h include file:
> 
>   PCI_CLASS_BRIDGE_PCI_NORMAL
>   PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE
> 
> And use these defines in all kernel code for describing PCI class codes for
> normal and subtractive PCI bridges.

Looks good; is this another case?

  drivers/pci/controller/pci-mvebu.c:     dev_rev |= (PCI_CLASS_BRIDGE_PCI << 8) << 8;

>  static void quirk_sb1250_ht(struct pci_dev *dev)
>  {
> -	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
> +	dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL;