linux-kernel - Re: [PATCH 2/2] asm-generic: io: don't perform swab during {in,out} string functions

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Message-Id: <201204271212.40203.arnd@arndb.de>
Date:	Fri, 27 Apr 2012 12:12:40 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Will Deacon <will.deacon@....com>
Cc:	linux-kernel@...r.kernel.org,
	uclinux-dist-devel@...ckfin.uclinux.org,
	Mike Frysinger <vapier@...too.org>
Subject: Re: [PATCH 2/2] asm-generic: io: don't perform swab during {in,out} string functions

On Friday 27 April 2012, Will Deacon wrote:
> The {in,out}s{b,w,l} functions are designed to operate on a stream of
> bytes and therefore should not perform any byte-swapping, regardless of
> the CPU byte order.
> 
> This patch fixes the generic IO header so that {in,out}s{b,w,l} call
> the __raw_{read,write} functions directly rather than going via the
> endian-correcting accessors.
> 
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Mike Frysinger <vapier@...too.org>
> Signed-off-by: Will Deacon <will.deacon@....com>

Acked-by: Arnd Bergmann <arnd@...db.de>
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