From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: Re: [PATCH] usb: ehci: make HC see up-to-date qh/qtd descriptor ASAP Date: Wed, 31 Aug 2011 08:56:41 +0800 Message-ID: References: <1314720193-26577-1-git-send-email-ming.lei@canonical.com> <1314722311.2344.64.camel@deneb.redhat.com> <20110830172642.GE3464@e102144-lin.cambridge.arm.com> <20110830174859.GA23098@kroah.com> <20110830175432.GG3464@e102144-lin.cambridge.arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Received: from youngberry.canonical.com ([91.189.89.112]:57195 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754375Ab1HaA4n (ORCPT ); Tue, 30 Aug 2011 20:56:43 -0400 In-Reply-To: <20110830175432.GG3464@e102144-lin.cambridge.arm.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Will Deacon Cc: Greg KH , Russell King , "linux-usb@vger.kernel.org" , "stern@rowland.harvard.edu" , Mark Salter , "linux-omap@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" On Wed, Aug 31, 2011 at 1:54 AM, Will Deacon wrote: > Although this doesn't have anything to do with ordering; it's all to do with > immediacy so I think we should try to avoiding using the term `barrier'. If > this can be made part of the coherent DMA API, that might be the best place > for it (I can't think of any other areas this is needed given that the > streaming DMA API and I/O accessors already deal with it). Agree too. thanks, -- Ming Lei