On Fri, Oct 02, 2015 at 03:37:54PM -0700, David Daney wrote:
...
> +/*
> + * Try to assign any resources marked as IORESOURCE_PCI_FIXED, as they
> + * are skipped by pbus_assign_resources_sorted().
> + */
> +static void pdev_assign_fixed_resources(struct pci_dev *dev)
> +{
> + int i;
> +
> + for (i = 0; i < PCI_NUM_RESOURCES; i++) {
> + struct pci_bus *b;
> + struct resource *r = &dev->resource[i];
> +
> + if (r->parent || !(r->flags & IORESOURCE_PCI_FIXED) ||
> + !(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
> + continue;
> +
> + b = dev->bus;
> + while (b && !r->parent) {
> + assign_fixed_resource_on_bus(b, r);
> + b = b->parent;
> + }
> + if (!r->parent) {
> + /*
> + * If that didn't work, try to fallback to the
> + * ultimate parent.
> + */
> + if (r->flags & IORESOURCE_IO)
> + request_resource(&ioport_resource, r);
> + else
> + request_resource(&iomem_resource, r);
> + }
I don't think this check is necessary.
assign_fixed_resource_on_bus() should find these resources when it reaches the top bus.
(since since the root bus contains these resources).
> + }
> +}
-Sean
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