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    Subject[PATCH v10 37/59] PCI: Check if resource is allocated before trying to assign one
    Date
    In following alt_size support, we will call pci_assign_resource() several
    times on one resource list, and some resources could have been assigned
    already.

    Skip allocated resource in the list, as pci_assign_resource()
    only can handle not assigned resource.

    Signed-off-by: Yinghai Lu <yinghai@kernel.org>
    ---
    drivers/pci/setup-bus.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
    index bf50a82..4d9cf1b 100644
    --- a/drivers/pci/setup-bus.c
    +++ b/drivers/pci/setup-bus.c
    @@ -386,7 +386,7 @@ static void assign_requested_resources_sorted(struct list_head *head,
    list_for_each_entry(dev_res, head, list) {
    res = dev_res->res;
    idx = res - &dev_res->dev->resource[0];
    - if (resource_size(res) &&
    + if (!res->parent && resource_size(res) &&
    pci_assign_resource(dev_res->dev, idx)) {
    if (fail_head)
    add_to_list(fail_head, dev_res->dev, res);
    --
    1.8.4.5
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