From: Rui Wang <rui.y.wang@xxxxxxxxx>
On Wed, June 22, 2016 11:15 PM Bjorn Helgaas wrote:
> [...]
> > @@ -1779,8 +1780,12 @@ void __init
> > pci_assign_unassigned_resources(void)
> > {
> > struct pci_bus *root_bus;
> >
> > - list_for_each_entry(root_bus, &pci_root_buses, node)
> > + list_for_each_entry(root_bus, &pci_root_buses, node) {
> > pci_assign_unassigned_root_bus_resources(root_bus);
> > +#ifdef CONFIG_X86
> > + acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge));
> > +#endif
>
> Doesn't this do the right thing even if you omit the #ifdefs, since you
> define a stub function below?
>
No. Without the '#ifdef CONFIG_X86' it breaks MIPS arch. The stub function is
within 'ifdef CONFIG_ACPI'. On archs without ACPI it doesn't compile due to
'undefined reference to acpi_ioapic_add'.
Thanks
Rui
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