From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [patch 2/2] sata_via: Delay on vt6420 when starting ATAPI DMA write Date: Wed, 20 Jan 2010 15:54:24 +0900 Message-ID: <4B56A8A0.3050309@gmail.com> References: <20100116235653.898098245@gmail.com> <20100116235851.884756038@gmail.com> <4B5678E2.2050709@gmail.com> <4B568C63.4050506@gmail.com> <7eb6a4d81001192233i5418249ct5a1717045f75167c@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pw0-f42.google.com ([209.85.160.42]:53651 "EHLO mail-pw0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751231Ab0ATGsU (ORCPT ); Wed, 20 Jan 2010 01:48:20 -0500 In-Reply-To: <7eb6a4d81001192233i5418249ct5a1717045f75167c@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Bart Hartgers Cc: Robert Hancock , linux-kernel@vger.kernel.org, Jeff Garzik , linux-ide@vger.kernel.org, juergen.metzdorf@telelev-dsl.de, markpschool@hotmail.com, sporadic.crash@gmail.com, apopov@sirma.bg, david@coomber.co.za, jay4mail@gmail.com Hello, On 01/20/2010 03:33 PM, Bart Hartgers wrote: > Well, the ata_sff_pause actually does a ndelay(400), and with today's > processors that would be a 'slow path', right? unlikely() is used to mark very unlikely paths not the slow ones and I don't really think DMA_TO_DEVICE would qualify as an unlikely path. Thanks. -- tejun