From mboxrd@z Thu Jan  1 00:00:00 1970
From: thomas.petazzoni@free-electrons.com (Thomas Petazzoni)
Date: Mon, 29 Jul 2013 17:14:26 +0200
Subject: [PATCH 1/2] dma: mv_xor: use readl/writel instead of
 __raw_{readl, writel}
In-Reply-To: <20130729150827.GL24642@n2100.arm.linux.org.uk>
References: <1375110310-26276-1-git-send-email-thomas.petazzoni@free-electrons.com>
 <1375110310-26276-2-git-send-email-thomas.petazzoni@free-electrons.com>
 <20130729150827.GL24642@n2100.arm.linux.org.uk>
Message-ID: <20130729171426.4bbd320c@skate>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Dear Russell King - ARM Linux,

On Mon, 29 Jul 2013 16:08:27 +0100, Russell King - ARM Linux wrote:
> On Mon, Jul 29, 2013 at 05:05:09PM +0200, Thomas Petazzoni wrote:
> > In order to support big-endian execution, the mv_xor driver is changed
> > to use thhe readl() and writel() accessors that properly convert from
> > the CPU endianess to the device endianess (which in the case of
> > Marvell XOR hardware is always little-endian).
> 
> Is it necessary that all these be barrier-ied IO operations?

As they used to be __raw_..., I presume that those barrier-ied
operations are not strictly needed, so I could use the relaxed
variants instead.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com