2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------
From: Hemant Pedanekar <hema...@ti.com>
commit 63c4408074cbcc070ac17fc10e524800eb9bd0b0 upstream.
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 <hema...@ti.com>
Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
drivers/pci/quirks.c | 10 ++++++++++
1 file changed, 10 insertions(+)
Index: linux-2.6.35.y/drivers/pci/quirks.c
===================================================================
--- linux-2.6.35.y.orig/drivers/pci/quirks.c
+++ linux-2.6.35.y/drivers/pci/quirks.c
@@ -2727,6 +2727,16 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IN
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)
{
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