[PATCH] mark PCI resource with start 0 as unassigned

[Segher Boessenkool]

> --- a/arch/powerpc/kernel/pci_64.c
> +++ b/arch/powerpc/kernel/pci_64.c
> @@ -1234,6 +1234,14 @@ static void __devinit fixup_resource(str
>  	struct pci_controller *hose = pci_bus_to_host(dev->bus);
>  	unsigned long start, end, mask, offset;
>
> +	/*
> +	 * tell the core code that this ressource is unassigned
> +	 * fixes p630 winbond IDE with libata
> +	 */
> +	if (res->start == 0) {
> +		res->flags = 0;
> +		return;
> +	}
>  	if (res->flags & IORESOURCE_IO) {
>  		offset = (unsigned long)hose->io_base_virt - pci_io_base;

Please make this run on pSeries only; on a PowerMac for
example, it's totally normal that the first PCI legacy I/O
BAR in the system gets assigned 0.


Segher