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Commit 3657cebd authored by Krzysztof =?utf-8?Q?Ha=C5=82asa?='s avatar Krzysztof =?utf-8?Q?Ha=C5=82asa?= Committed by Bjorn Helgaas
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PCI: Add quirk for Intersil/Techwell TW686[4589] AV capture cards 



Intersil/Techwell TW686[4589]-based video capture cards have an empty
(zero) class code.  Fix it.

Signed-off-by: default avatarKrzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 4a118753

drivers/pci/quirks.c

+22 −0
Original line number Diff line number Diff line
@@ -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