Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.1 038/102] PCI: Fix TI816X class code quirk | Date | Sat, 19 Sep 2015 10:27:50 -0700 |
| |
4.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bjorn Helgaas <bhelgaas@google.com>
commit d1541dc977d376406f4584d8eb055488655c98ec upstream.
In fixup_ti816x_class(), we assigned "class = PCI_CLASS_MULTIMEDIA_VIDEO". But PCI_CLASS_MULTIMEDIA_VIDEO is only the two-byte base class/sub-class and needs to be shifted to make space for the low-order interface byte.
Shift PCI_CLASS_MULTIMEDIA_VIDEO to set the correct class code.
Fixes: 63c4408074cb ("PCI: Add quirk for setting valid class for TI816X Endpoint") Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Hemant Pedanekar <hemantp@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/pci/quirks.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2838,12 +2838,15 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IN static void fixup_ti816x_class(struct pci_dev *dev) { + u32 class = dev->class; + /* TI 816x devices do not have class code set when in PCIe boot mode */ - dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n"); - dev->class = PCI_CLASS_MULTIMEDIA_VIDEO; + dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8; + dev_info(&dev->dev, "PCI class overridden (%#08x -> %#08x)\n", + class, dev->class); } DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800, - PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class); + PCI_CLASS_NOT_DEFINED, 0, fixup_ti816x_class); /* Some PCIe devices do not work reliably with the claimed maximum * payload size supported.
| |