From: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx> The host bridge of MT7622 has hardware code the class code to an arbitrary, meaningless value, fix that. Signed-off-by: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx> --- drivers/pci/host/pcie-mediatek.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/host/pcie-mediatek.c index fc29a9a..dcafeac 100644 --- a/drivers/pci/host/pcie-mediatek.c +++ b/drivers/pci/host/pcie-mediatek.c @@ -1175,3 +1175,15 @@ static struct platform_driver mtk_pcie_driver = { }, }; builtin_platform_driver(mtk_pcie_driver); + +/* The host bridge of MT7622 advertises the wrong device class. */ +static void mtk_fixup_class(struct pci_dev *dev) +{ + dev->class = PCI_CLASS_BRIDGE_PCI << 8; +} + +/* + * The HW default value of vendor id and device id for mt7622 are 0x0e8d, + * 0x3258, which are arbitrary, meaningless values. + */ +DECLARE_PCI_FIXUP_EARLY(0x0e8d, 0x3258, mtk_fixup_class); -- 2.6.4