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PCI: Fix TI816X class code quirk 

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: 63c4408074 ("PCI: Add quirk for setting valid class for TI816X Endpoint")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Hemant Pedanekar <hemantp@ti.com>
hifive-unleashed-5.1
Bjorn Helgaas 2015-06-19 15:58:24 -05:00
parent e6323e3c51
commit d1541dc977
1 changed files with 6 additions and 3 deletions
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9
drivers/pci/quirks.c
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@ -2835,12 +2835,15 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
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.