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authorHemant Pedanekar <hemantp@ti.com>2011-04-05 12:32:50 +0530
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-03 10:34:48 +0900
commit872b58c1256fa27e17c52b098a55a4d6c92b2584 (patch)
tree1981ce1998161bc5834aef9b4b6db7cbf5e71a0c
parent0ab692407602f96ad71d62f9c551fdba4529c803 (diff)
downloadlinux-linaro-stable-872b58c1256fa27e17c52b098a55a4d6c92b2584.tar.gz
PCI: Add quirk for setting valid class for TI816X Endpoint
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 <hemantp@ti.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/pci/quirks.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index bd80f6378463..a1e4f6156913 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -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)
{