Messages in this thread Patch in this message | | | From | (Krzysztof Hałasa) | Subject | [PATCH] Add PCI ID and quirk for Intersil/Techwell TW686[4589] AV capture cards. | Date | Fri, 19 Jun 2015 10:00:15 +0200 |
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Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) class code. Fix it.
Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
--- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3662,6 +3662,26 @@ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias); DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias); /* + * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) + * class code. Fix it. + */ + +static void quirk_tw686x_class(struct pci_dev *pdev) +{ + /* Use "Multimedia controller" class */ + pdev->class = 0x048001; + dev_info(&pdev->dev, "TW686x PCI class workaround enabled\n"); +} +DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 0, + quirk_tw686x_class); +DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 0, + quirk_tw686x_class); +DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 0, + quirk_tw686x_class); +DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 0, + quirk_tw686x_class); + +/* * AMD has indicated that the devices below do not support peer-to-peer * in any system where they are found in the southbridge with an AMD * IOMMU in the system. Multifunction devices that do not support
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