linux-kernel - Re: MMIO and gcc re-ordering issue

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Message-ID: <20080529114634.048ea9a0@core>
Date:	Thu, 29 May 2008 11:46:34 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	benh@...nel.crashing.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, linux-arch@...r.kernel.org,
	scottwood@...escale.com, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, tpiepho@...escale.com
Subject: Re: MMIO and gcc re-ordering issue

> It's not exactly a well-established interface. Only five architectures
> define these functions, and there is not a single user in the kernel
> source outside of these architecture's io.h files.

That is because the drivers using them had them removed (eg I²O) - mostly
because "it didn't compile on power pc" 8(


Alan
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