From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Date: Thu, 14 Oct 2004 18:00:06 +0000
Subject: Re: [PATCH] Introduce PCI <-> CPU address conversion [1/2]
Message-Id: <20041014180005.GA11954@infradead.org>
List-Id: <linux-ia64.vger.kernel.org>
References: <20041014124737.GM16153@parcelfarce.linux.theplanet.co.uk> <20041014125348.GA9633@infradead.org> <20041014135323.GO16153@parcelfarce.linux.theplanet.co.uk>
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To: Matthew Wilcox <matthew@wil.cx>
Cc: Christoph Hellwig <hch@infradead.org>, Greg KH <greg@kroah.com>, linux-pci@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org

On Thu, Oct 14, 2004 at 02:53:23PM +0100, Matthew Wilcox wrote:
> On Thu, Oct 14, 2004 at 01:53:48PM +0100, Christoph Hellwig wrote:
> > I'd rather have this declared in every architectures asm/ header, so it's
> > more explicit that it's an per-arch thing.  Also make it a static inline
> > so we get typechecking.
> 
> I actually don't want typechecking.  Sometimes you have a device and
> sometimes you have a bus.  You can get everything you want (sysdata)
> from either, so there's no point in doing dev->bus when all you needed
> was right there.

For some architectures the sysdata is different for bus vs device, so
yes, we do want strict typechecking.