linux-kernel - Re: [PATCH] pcmcia: ppc64 needs 64-bit ioaddr

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Date:	Tue, 15 May 2007 08:47:04 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Olof Johansson <olof@...om.net>, linuxppc-dev@...abs.org,
	linux-pcmcia@...ts.infradead.org, paulus@...ba.org,
	linux-kernel@...r.kernel.org,
	Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: [PATCH] pcmcia: ppc64 needs 64-bit ioaddr_t

On Mon, 2007-05-14 at 15:08 -0700, Andrew Morton wrote:
> 
> Well that's some pretty sad code you've found there.  The kernel
> surely has
> some appropriate type to use here without us having to invent a new
> one. 
> But I suspect if we were to rationalise things in there it will get
> messy.

There is more sad stuff involved with drivers assuming IO ports fit in
int. A proper fix for 2.6.23 will be the rework of PIO allocation I'm
doing. A temporary fix for 2.6.22 would be for Olof to use
reserve_phb_iospace() to make sure his PIO gets in the low 31 bits. We
need to add a spinlock to it though.

Ben.


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