lkml.org 
[lkml]   [2011]   [Jun]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[157/165] PCI: Add quirk for setting valid class for TI816X Endpoint
    2.6.39-stable review patch.  If anyone has any objections, please let us know.

    ------------------
    Content-Length: 1561
    Lines: 45

    From: Hemant Pedanekar <hemantp@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 <hemantp@ti.com>
    Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/pci/quirks.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    --- a/drivers/pci/quirks.c
    +++ b/drivers/pci/quirks.c
    @@ -2784,6 +2784,16 @@ 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)
    {



    \
     
     \ /
      Last update: 2011-06-01 10:31    [W:0.020 / U:0.372 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site