From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759963AbXKMX3S (ORCPT ); Tue, 13 Nov 2007 18:29:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754423AbXKMX3E (ORCPT ); Tue, 13 Nov 2007 18:29:04 -0500 Received: from mail.gmx.net ([213.165.64.20]:37158 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754064AbXKMX3D (ORCPT ); Tue, 13 Nov 2007 18:29:03 -0500 X-Authenticated: #24128601 X-Provags-ID: V01U2FsdGVkX18WFcY8S3EWxYgWmAigB9AuLFDDyrFtChhdimVmuI N/7hYNaOtu5OIP Date: Wed, 14 Nov 2007 00:28:59 +0100 From: Sebastian Kemper To: Alan Cox Cc: linux-kernel Subject: Re: libata/PATA: GPCMD_SET_STREAMING via SG_IO does nothing Message-ID: <20071113232859.GA4681@section-eight> References: <20071113164323.GA5252@section-eight> <20071113212230.77cadecd@the-village.bc.nu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071113212230.77cadecd@the-village.bc.nu> User-Agent: Mutt/1.5.16 (2007-06-09) X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Alan! On Tue, Nov 13, 2007 at 09:22:30PM +0000, Alan Cox wrote: > It isn't a known issue, and it suprises me as SG_IO basically passes > commands through to the drive. We don't support speed change via xfermode > setting but GPCMD_SET_STREAMING sohuld behave. > > Do you have a simple code example that shows the problem ? http://svn.mplayerhq.hu/mplayer/trunk/stream/stream_dvd.c?view=markup See dvd_set_speed(). The drive I'm using is an Optiarc DVD RW AD-7170A. With the "old" ATA driver dvd_set_speed() works, with libata it doesn't. Regards Sebastian