From 3657cebda5eb9dc1c4c6a0ea5b38bfef70aea50a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Krzysztof=20=3D=3Futf-8=3FQ=3FHa=3DC5=3D82asa=3F=3D?= Date: Fri, 19 Jun 2015 10:00:15 +0200 Subject: [PATCH] PCI: Add quirk for Intersil/Techwell TW686[4589] AV capture cards MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) class code. Fix it. Signed-off-by: Krzysztof Hałasa Signed-off-by: Bjorn Helgaas --- drivers/pci/quirks.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 1fd0ce8208d0..1b9fc4ed39a3 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3663,6 +3663,28 @@ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias); /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */ 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) +{ + u32 class = pdev->class; + + /* Use "Multimedia controller" class */ + pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01; + dev_info(&pdev->dev, "TW686x PCI class overridden (%#08x -> %#08x)\n", + class, pdev->class); +} +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