linux-kernel - Re: [PATCH 1/2] asm-generic: io: remove {read,write} string functions

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Message-Id: <201205011440.57639.arnd@arndb.de>
Date:	Tue, 1 May 2012 14:40:57 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Will Deacon <will.deacon@....com>
Cc:	Mike Frysinger <vapier@...too.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"uclinux-dist-devel@...ckfin.uclinux.org" 
	<uclinux-dist-devel@...ckfin.uclinux.org>
Subject: Re: [PATCH 1/2] asm-generic: io: remove {read,write} string functions

On Tuesday 01 May 2012, Will Deacon wrote:
> It would be nice if we could just use asm-generic/io.h as the documention,
> i.e. if you want to write a portable driver, just stick to the functions
> implemented there. Apart from the string accessors, I think it's already
> fairly accurate. The __raw_* functions seem to be missing on s390 but I
> don't think driver portability is a huge concern for that architecture.

Actually, s390 has none of the mmio accessors right now, because there
is no PCI or other memory mapped hardware.

	Arnd
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