From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH 2.6.23-rc3] pata_pdc2027x: PLL detection fixes Date: Sat, 18 Aug 2007 20:53:31 -0400 Message-ID: <46C7948B.1080107@garzik.org> References: <200708182058.l7IKwrcJ016820@harpo.it.uu.se> <46C763D1.7060801@garzik.org> <46C78B57.5070808@tw.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:47776 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752370AbXHSAxf (ORCPT ); Sat, 18 Aug 2007 20:53:35 -0400 In-Reply-To: <46C78B57.5070808@tw.ibm.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: albertl@mail.com Cc: Mikael Pettersson , linux-ide@vger.kernel.org, alan@lxorguk.ukuu.org.uk Albert Lee wrote: > The first rmb() is to make sure bccrl is read before bccrlv for later > (bccrl >= bccrlv) check since both reading the same memory address. That's already guaranteed without the rmb(), AFAICS. Jeff