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Subject: Re: [PATCH] [POWERPC] Always hookup PHB IO resource even when empty
From: Michael Ellerman <michael@ellerman.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
In-Reply-To: <20080121003256.E1EBDDDDF0@ozlabs.org>
References: <20080121003256.E1EBDDDDF0@ozlabs.org>
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Date: Mon, 21 Jan 2008 11:37:01 +1100
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Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
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On Mon, 2008-01-21 at 11:32 +1100, Benjamin Herrenschmidt wrote:
> We must always hookup the pci_bus resource 0 to the PHB io_resource even
> if the later is empty (the bus has no IO support). Otherwise, some other
> code will end up hooking it up to something bogus and the resource tree
> will end up being broken.
>=20
> This fixes boot on QS20 Cell blades where the IDE driver failed to alloca=
te
> the IO resources due to breakage of the resource tree.

Tested-by: Michael Ellerman <michael@ellerman.id.au>

cheers

--=20
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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