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    Subject[PATCH 1/4] Fix pci_claim_resource
    Date
    Instead of starting from the iomem or ioport roots, start from the
    parent bus' resources. This fixes a bug where child resources would
    appear above their parents resources if they had the same size.

    Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
    Tested-by: Andrew Patterson <andrew.patterson@hp.com>
    ---
    drivers/pci/setup-res.c | 4 ++--
    1 files changed, 2 insertions(+), 2 deletions(-)

    diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
    index 3039fcb..1240351 100644
    --- a/drivers/pci/setup-res.c
    +++ b/drivers/pci/setup-res.c
    @@ -99,11 +99,11 @@ void pci_update_resource(struct pci_dev *dev, int resno)
    int pci_claim_resource(struct pci_dev *dev, int resource)
    {
    struct resource *res = &dev->resource[resource];
    - struct resource *root = NULL;
    + struct resource *root;
    char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
    int err;

    - root = pcibios_select_root(dev, res);
    + root = pci_find_parent_resource(dev, res);

    err = -EINVAL;
    if (root != NULL)
    --
    1.6.3.1


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