From: khalasa@piap.pl (Krzysztof Hałasa)
To: Bjorn Helgaas <bhelgaas@google.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] Add PCI ID and quirk for Intersil/Techwell TW686[4589] AV capture cards.
Date: Fri, 19 Jun 2015 10:00:15 +0200 [thread overview]
Message-ID: <m3vbekruuo.fsf@t19.piap.pl> (raw)
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
next reply other threads:[~2015-06-19 8:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-19 8:00 Krzysztof Hałasa [this message]
2015-06-19 22:13 ` [PATCH] Add PCI ID and quirk for Intersil/Techwell TW686[4589] AV capture cards Bjorn Helgaas
2015-06-22 5:35 ` Krzysztof Hałasa
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