Re: [PATCH v2] PCI: Add defines for normal and subtractive PCI bridges

[Lukas Wunner]

On Mon, Dec 20, 2021 at 03:51:40PM +0100, Pali Rohár wrote:
> --- a/drivers/pci/pcie/portdrv_pci.c
> +++ b/drivers/pci/pcie/portdrv_pci.c
> @@ -178,9 +178,9 @@ static pci_ers_result_t pcie_portdrv_mmio_enabled(struct pci_dev *dev)
>   */
>  static const struct pci_device_id port_pci_ids[] = {
>  	/* handle any PCI-Express port */
> -	{ PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0) },
> +	{ PCI_DEVICE_CLASS(PCI_CLASS_BRIDGE_PCI_NORMAL, ~0) },
>  	/* subtractive decode PCI-to-PCI bridge, class type is 060401h */
> -	{ PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x01), ~0) },
> +	{ PCI_DEVICE_CLASS(PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE, ~0) },

Any harm in simply matching for 0x060400 with mask 0xffff00?