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From: David Mosberger <davidm@napali.hpl.hp.com>
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Date: Mon, 23 Sep 2002 13:53:13 -0700
To: "David S. Miller" <davem@redhat.com>
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       phillips@arcor.de, _deepfire@mail.ru, linux-kernel@vger.kernel.org
Subject: Re: DAC960 in 2.5.38, with new changes
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>>>>> On Mon, 23 Sep 2002 13:40:00 -0700 (PDT), "David S. Miller" <davem@redhat.com> said:

  >> From: David Mosberger <davidm@napali.hpl.hp.com>
  >> Date: Mon, 23 Sep 2002 12:19:02 -0700

  >> This looks like a porting-nightmare in the making.  There's got to be a
  >> better way to determine whether you need a writeq() vs. a writel().

  > Or perhaps every platform should provide a writeq(), on 32-bit systems
  > it may merely be implemented as two consequetive writel() calls.

True, but I was wondering whether driver writers will have an implicit
assumption on readX/writeX being atomic.  I don't think anyone ever
promised that, but I suspect all existing implementations are indeed
atomic (it's true even for old Alphas which don't have sub-word
load/stores).

	--david
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