From mboxrd@z Thu Jan  1 00:00:00 1970
From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH] mark PCI resource with start 0 as unassigned
Date: Mon, 4 Dec 2006 13:44:03 +0100
Message-ID: <FF278F8E-1F65-488D-8821-86A1D9F3B5DA@kernel.crashing.org>
References: <20061130165202.GA23205@aepfle.de>
	<20061204123854.GA28159@aepfle.de>
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To: Olaf Hering <olaf@aepfle.de>
Cc: linux-ide@vger.kernel.org, linuxppc-dev@ozlabs.org
List-Id: linux-ide@vger.kernel.org

> --- 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