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PCI: Add quirk for setting valid class for TI816X Endpoint

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TI816X (common name for DM816x/C6A816x/AM389x family) devices configured
to boot as PCIe Endpoint have class code = 0. This makes kernel PCI bus
code to skip allocating BARs to these devices resulting into following
type of error when trying to enable them:

"Device 0000:01:00.0 not available because of resource collisions"

The device cannot be operated because of the above issue.

This patch adds a ID specific (TI VENDOR ID and 816X DEVICE ID based)
'early' fixup quirk to replace class code with
PCI_CLASS_MULTIMEDIA_VIDEO as class.

Signed-off-by: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Hemant Pedanekar 2011-04-05 12:32:50 +05:30 committed by Jesse Barnes
parent 40294d8f14
commit 63c4408074
1 changed files with 10 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/pci/quirks.c
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@ -2784,6 +2784,16 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
#endif
static void __devinit fixup_ti816x_class(struct pci_dev* dev)
{
/* TI 816x devices do not have class code set when in PCIe boot mode */
if (dev->class == PCI_CLASS_NOT_DEFINED) {
dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n");
dev->class = PCI_CLASS_MULTIMEDIA_VIDEO;
}
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_TI, 0xb800, fixup_ti816x_class);
static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
struct pci_fixup *end)
{